dnl Process this file with autoconf to produce a configure script. -*-m4-*-
dnl %CopyrightBegin%
dnl
dnl Copyright Ericsson AB 1997-2019. All Rights Reserved.
dnl
dnl Licensed under the Apache License, Version 2.0 (the "License");
dnl you may not use this file except in compliance with the License.
dnl You may obtain a copy of the License at
dnl
dnl http://www.apache.org/licenses/LICENSE-2.0
dnl
dnl Unless required by applicable law or agreed to in writing, software
dnl distributed under the License is distributed on an "AS IS" BASIS,
dnl WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
dnl See the License for the specific language governing permissions and
dnl limitations under the License.
dnl
dnl %CopyrightEnd%
dnl The string "FIXME convbreak" means that there is a break of
dnl autoconf convention that should be cleaned up.
AC_INIT(vsn.mk)
AC_PREREQ(2.59)
LM_PRECIOUS_VARS
dnl How to set srcdir absolute is taken from the GNU Emacs distribution
#### Make srcdir absolute, if it isn't already. It's important to
#### avoid running the path through pwd unnecessary, since pwd can
#### give you automounter prefixes, which can go away.
case "${srcdir}" in
/* ) ;;
. )
## We may be able to use the $PWD environment variable to make this
## absolute. But sometimes PWD is inaccurate.
## Make sure CDPATH doesn't affect cd (in case PWD is relative).
CDPATH=
if test "${PWD}" != "" && test "`(cd ${PWD} ; sh -c pwd)`" = "`pwd`" ;
then
srcdir="$PWD"
else
srcdir="`(cd ${srcdir}; pwd)`"
fi
;;
* ) srcdir="`(cd ${srcdir}; pwd)`" ;;
esac
## Now, make sure that ERL_TOP is set and is the same as srcdir
##
if test -z "$ERL_TOP" || test ! -d $ERL_TOP ; then
AC_MSG_ERROR(You need to set the environment variable ERL_TOP!)
fi
if test x"${ERL_TOP}/erts" != x"$srcdir"; then
AC_MSG_ERROR([You need to run configure with argument --srcdir=${ERL_TOP}/erts])
fi
erl_top=${ERL_TOP}
# echo XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX
# echo X
# echo "X srcdir = $srcdir"
# echo "X ERL_TOP = $ERL_TOP"
# echo X
# echo XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX
AC_CONFIG_AUX_DIRS($srcdir/autoconf)
dnl ----------------------------------------------------------------------
dnl Figure out what system we are running on.
dnl ----------------------------------------------------------------------
#
# To configure for free source run ./configure --host=free_source
#
dnl
dnl AC_CANONICAL_HOST does not like free_source as a host specification,
dnl so we make a little special case.
dnl
if test "X$host" != "Xfree_source" -a "X$host" != "Xwin32"; then
AC_CANONICAL_HOST
else
host_os=$host
fi
if test "$cross_compiling" = "yes"; then
CROSS_COMPILING=yes
else
CROSS_COMPILING=no
fi
AC_SUBST(CROSS_COMPILING)
ERL_XCOMP_SYSROOT_INIT
AC_ISC_POSIX
AC_CONFIG_HEADER($host/config.h:config.h.in include/internal/$host/ethread_header_config.h:include/internal/ethread_header_config.h.in include/$host/erl_int_sizes_config.h:include/erl_int_sizes_config.h.in)
dnl ----------------------------------------------------------------------
dnl Optional features.
dnl ----------------------------------------------------------------------
ENABLE_ALLOC_TYPE_VARS=
AC_SUBST(ENABLE_ALLOC_TYPE_VARS)
AC_ARG_ENABLE(bootstrap-only,
AS_HELP_STRING([--enable-bootstrap-only],
[enable bootstrap only configuration]),
[ if test "X$enableval" = "Xyes"; then
# Disable stuff not necessary in a bootstrap only system in order
# to speed up things by reducing the amount of stuff needing to be
# built...
with_termcap=no
with_ssl=no
with_ssl_zlib=no
enable_hipe=no
enable_sctp=no
fi
])
AC_ARG_ENABLE(dirty-schedulers-test,
AS_HELP_STRING([--enable-dirty-schedulers-test], [enable dirty scheduler test (for debugging purposes)]),
[ case "$enableval" in
yes) enable_dirty_schedulers_test=yes ;;
*) enable_dirty_schedulers_test=no ;;
esac ], enable_dirty_schedulers_test=no)
AC_ARG_ENABLE(smp-require-native-atomics,
AS_HELP_STRING([--disable-smp-require-native-atomics],
[disable the SMP requirement of a native atomic implementation]),
[ case "$enableval" in
no) smp_require_native_atomics=no ;;
*) smp_require_native_atomics=yes ;;
esac ], smp_require_native_atomics=yes)
AC_ARG_WITH(termcap,
AS_HELP_STRING([--with-termcap], [use termcap (default)])
AS_HELP_STRING([--without-termcap],
[do not use any termcap libraries (ncurses,curses,termcap,termlib)]),
[],
[with_termcap=yes])
AC_ARG_ENABLE(lock-checking,
AS_HELP_STRING([--enable-lock-checking], [enable lock checking]),
[ case "$enableval" in
no) enable_lock_check=no ;;
*) enable_lock_check=yes ;;
esac
],
enable_lock_check=no)
AC_ARG_ENABLE(lock-counter,
AS_HELP_STRING([--enable-lock-counter], [enable lock counters]),
[ case "$enableval" in
no) enable_lock_count=no ;;
*) enable_lock_count=yes ;;
esac ], enable_lock_count=no)
AC_ARG_ENABLE(kernel-poll,
AS_HELP_STRING([--enable-kernel-poll], [enable kernel poll support])
AS_HELP_STRING([--disable-kernel-poll], [disable kernel poll support]),
[ case "$enableval" in
no) enable_kernel_poll=no ;;
*) enable_kernel_poll=yes ;;
esac ], enable_kernel_poll=unknown)
AC_ARG_ENABLE(sctp,
AS_HELP_STRING([--enable-sctp], [enable sctp support (default)
to on demand load the SCTP library in runtime if needed])
AS_HELP_STRING([--enable-sctp=lib], [enable sctp support
to link against the SCTP library])
AS_HELP_STRING([--disable-sctp], [disable sctp support]),
[ case "x$enableval" in
xno|xyes|xlib|x)
;;
x*)
AC_MSG_ERROR("invalid value --enable-sctp=$enableval")
;;
esac ])
AC_ARG_ENABLE(hipe,
AS_HELP_STRING([--enable-hipe], [enable hipe support])
AS_HELP_STRING([--disable-hipe], [disable hipe support]))
AC_ARG_ENABLE(native-libs,
AS_HELP_STRING([--enable-native-libs],
[compile Erlang libraries to native code]))
AC_ARG_ENABLE(fp-exceptions,
AS_HELP_STRING([--enable-fp-exceptions],
[use hardware floating point exceptions (default if hipe enabled)]),
[ case "$enableval" in
no) enable_fp_exceptions=no ;;
*) enable_fp_exceptions=yes ;;
esac
],enable_fp_exceptions=auto)
AC_ARG_ENABLE(m64-build,
AS_HELP_STRING([--enable-m64-build],
[build 64bit binaries using the -m64 flag to (g)cc]),
[ case "$enableval" in
no) enable_m64_build=no ;;
*) enable_m64_build=yes ;;
esac
],enable_m64_build=no)
AC_ARG_ENABLE(m32-build,
AS_HELP_STRING([--enable-m32-build],
[build 32bit binaries using the -m32 flag to (g)cc]),
[ case "$enableval" in
no) enable_m32_build=no ;;
*) enable_m32_build=yes ;;
esac
],enable_m32_build=no)
AC_ARG_WITH(dynamic-trace,
AS_HELP_STRING([--with-dynamic-trace={dtrace|lttng|systemtap}],
[specify use of dynamic trace framework, dtrace, lttng or systemtap])
AS_HELP_STRING([--without-dynamic-trace],
[don't enable any dynamic tracing (default)]))
if test X"$with_dynamic_trace" = X""; then
with_dynamic_trace=no
fi
case "$with_dynamic_trace" in
no) DYNAMIC_TRACE_FRAMEWORK=;;
lttng)
AC_DEFINE(USE_LTTNG,[1],
[Define if you want to use lttng for dynamic tracing])
DYNAMIC_TRACE_FRAMEWORK=lttng;;
dtrace)
AC_DEFINE(USE_DTRACE,[1],
[Define if you want to use dtrace for dynamic tracing])
DYNAMIC_TRACE_FRAMEWORK=dtrace;;
systemtap)
AC_DEFINE(USE_SYSTEMTAP,[1],
[Define if you want to use systemtap for dynamic tracing])
DYNAMIC_TRACE_FRAMEWORK=systemtap;;
*)
AC_MSG_ERROR(Unknown dynamic tracing framework specified with --with-dynamic-trace!);;
esac
if test X"$DYNAMIC_TRACE_FRAMEWORK" != X""; then
AC_DEFINE(USE_DYNAMIC_TRACE,[1],
[Define if you want to use dynamic tracing])
fi
AC_ARG_ENABLE(vm-probes,
AS_HELP_STRING([--enable-vm-probes],
[add dynamic trace probes to the Beam VM (only possible if --with-dynamic-trace is enabled, and then default)]),
[ case "$enableval" in
no) use_vm_probes=no ;;
*)
if test X"$DYNAMIC_TRACE_FRAMEWORK" != X""; then
use_vm_probes=yes ;
else
AC_MSG_ERROR(Can not enable VM probes without any dynamic tracing framework!);
fi;;
esac ], if test X"$DYNAMIC_TRACE_FRAMEWORK" != X""; then
use_vm_probes=yes ;
else
use_vm_probes=no
fi)
AC_SUBST(USE_VM_PROBES)
if test X"$DYNAMIC_TRACE_FRAMEWORK" != X"lttng"; then
if test X"$use_vm_probes" = X"yes"; then
USE_VM_PROBES=yes
AC_DEFINE(USE_VM_PROBES,[1],
[Define to enable VM dynamic trace probes])
fi
fi
AC_ARG_WITH(assumed-cache-line-size,
AS_HELP_STRING([--with-assumed-cache-line-size=SIZE],
[specify assumed cache line size in bytes (valid values are powers of two between and including 16 and 8192; default is 64)]))
dnl Require the assumed cache-line size to be a power of two between 16 and 8192
case "$with_assumed_cache_line_size" in
""|no|yes)
with_assumed_cache_line_size=64;;
16|32|64|128|256|512|1024|2048|4096|8192)
;;
*)
AC_MSG_ERROR([Invalid assumed cache-line size of $with_assumed_cache_line_size bytes])
;;
esac
AC_DEFINE_UNQUOTED(ASSUMED_CACHE_LINE_SIZE,
$with_assumed_cache_line_size,
[Assumed cache-line size (in bytes)])
AC_ARG_ENABLE(systemd,
AS_HELP_STRING([--enable-systemd], [enable systemd support in epmd]),
[],
[enable_systemd=no])
AC_ARG_ENABLE(saved-compile-time,
AS_HELP_STRING([--disable-saved-compile-time], [disable saved compile time]),
[ case "$enableval" in
no) save_compile_time=0 ;;
*) save_compile_time=1 ;;
esac ], save_compile_time=1)
AC_DEFINE_UNQUOTED(ERTS_SAVED_COMPILE_TIME, $save_compile_time, [Save compile time?])
AC_ARG_WITH(microstate-accounting,
AS_HELP_STRING([--with-microstate-accounting={yes|extra}],
[enable microstate account, possibly with extra detailed states])
AS_HELP_STRING([--without-microstate-accounting],
[don't enable microstate accounting]),
[],[with_microstate_accounting=yes])
case "$with_microstate_accounting" in
yes) AC_DEFINE(ERTS_ENABLE_MSACC,[1],
[Define as 1 if you want to enable microstate accounting, 2 if you want extra states]) ;;
extra) AC_DEFINE(ERTS_ENABLE_MSACC,[2],
[Define as 1 if you want to enable microstate accounting, 2 if you want extra states]) ;;
*) ;;
esac
dnl Magic test for clearcase.
OTP_RELEASE=
if test "${ERLANG_COMMERCIAL_BUILD}" != ""; then
OTP_EXTRA_FLAGS=-DOTP_RELEASE
OTP_RELEASE=yes
else
OTP_EXTRA_FLAGS=
fi
AC_SUBST(OTP_RELEASE)
AC_MSG_CHECKING([OTP release])
[SYSTEM_VSN=`cat $ERL_TOP/OTP_VERSION | sed "s|\([0-9]*\).*|\1|"`]
AC_MSG_RESULT([$SYSTEM_VSN])
AC_SUBST(SYSTEM_VSN)
AC_MSG_CHECKING([OTP version])
[OTP_VERSION=`cat $ERL_TOP/OTP_VERSION`]
AC_MSG_RESULT([$OTP_VERSION])
AC_SUBST(OTP_VERSION)
if test X${enable_m64_build} = Xyes; then
case $CFLAGS in
*-m64*)
;;
*)
CFLAGS="-m64 $CFLAGS"
;;
esac
else
if test X${enable_m32_build} = Xyes;
then
case $CFLAGS in
*-m32*)
;;
*)
CFLAGS="-m32 $CFLAGS"
;;
esac ;
fi
fi
AC_ARG_ENABLE(static-nifs,
AS_HELP_STRING([--enable-static-nifs], [link nifs statically. If yes then all nifs in all Erlang/OTP applications will be statically linked into the main binary. It is also possible to give a list of nifs that should be linked statically. The list should be a comma separated and contain the absolute path to a .a archive for each nif that is to be statically linked. The name of the .a archive has to be the same as the name of the nif. Note that you have to link any external dependencies that the nifs have to the main binary, so for the crypto nif you want to pass LIBS=-lcrypto to configure.]),
STATIC_NIFS="$enableval",
STATIC_NIFS=no)
AC_SUBST(STATIC_NIFS)
AC_ARG_ENABLE(static-drivers,
AS_HELP_STRING([--enable-static-drivers], [comma separated list of linked-in drivers to link statically with the main binary. The list should contain the absolute path to a .a archive for each driver that is to be statically linked. The name of the .a archive has to be the same as the name of the driver.]),
STATIC_DRIVERS="$enableval",
STATIC_DRIVERS=no)
AC_SUBST(STATIC_DRIVERS)
AC_ARG_WITH(ets-write-concurrency-locks,
AS_HELP_STRING([--with-ets-write-concurrency-locks={8|16|32|64|128|256}],
[specify how many locks the write_concurrency option for ets should use.])
AS_HELP_STRING([--without-ets-write-concurrency-locks],
[use the default number of write_concurrency locks (default)]))
if test X"$with_ets_write_concurrency_locks" != X""; then
AC_DEFINE_UNQUOTED(ERTS_DB_HASH_LOCK_CNT,$with_ets_write_concurrency_locks,
[Define to override the default number of write_concurrency locks])
fi
AC_ARG_WITH(spectre-mitigation,
AS_HELP_STRING([--with-spectre-mitigation={yes|incomplete}],
[enable spectre mitigation, either fully or with mitigations
disabled in a handful places like the interpreter])
AS_HELP_STRING([--without-spectre-mitigation],
[build without spectre mitigation]),
[],[with_spectre_mitigation=no])
case "$with_spectre_mitigation" in
no) ;;
yes) ;;
incomplete) ;;
*) AC_MSG_ERROR([Invalid spectre mitigation setting]) ;;
esac
i_noretpoline_attr=""
if test X"$with_spectre_mitigation" != X"no"; then
CFLAGS="$CFLAGS -mindirect-branch=thunk"
AC_MSG_CHECKING([for spectre mitigation])
AC_COMPILE_IFELSE(
[AC_LANG_PROGRAM([],[return 0;])],
[AC_MSG_RESULT([yes])],
[AC_MSG_ERROR([no])])
if test X"$with_spectre_mitigation" = X"incomplete"; then
# gcc and clang support this attribute if they're recent enough. Note
# that we must compile with -Werror to check for actual support as they
# warn rather than error out on unsupported attributes.
i_noretpoline_attr='__attribute__((__indirect_branch__("keep")))'
i_preserve_cflags="$CFLAGS"
CFLAGS="$CFLAGS -Werror"
AC_MSG_CHECKING([whether spectre mitigation can be disabled on a per-function basis])
AC_COMPILE_IFELSE(
[AC_LANG_PROGRAM([$i_noretpoline_attr],[return 0;])],
[AC_MSG_RESULT([yes])],
[AC_MSG_ERROR([no])])
CFLAGS="$i_preserve_cflags"
fi
fi
AC_DEFINE_UNQUOTED(ERTS_NO_RETPOLINE, $i_noretpoline_attr,
[Per-function attribute for disabling retpoline. This is
*only* defined when --with-spectre-mitigation=incomplete
and has no effects otherwise])
dnl ----------------------------------------------------------------------
dnl Checks for programs.
dnl ----------------------------------------------------------------------
AC_PROG_CC
AC_SUBST(GCC)
dnl ---------------------------------------------------------------------
dnl Special stuff regarding CFLAGS and details in the environment...
dnl ---------------------------------------------------------------------
dnl NOTE: CPPFLAGS will be included in CFLAGS at the end
case $host_os in
linux*) CPPFLAGS="$CPPFLAGS -D_GNU_SOURCE";;
win32)
# The ethread library requires _WIN32_WINNT of at least 0x0403.
# -D_WIN32_WINNT=* from CPPFLAGS is saved in ETHR_DEFS.
CPPFLAGS="$CPPFLAGS -D_WIN32_WINNT=0x0600 -DWINVER=0x0600"
;;
*)
;;
esac
LM_WINDOWS_ENVIRONMENT
dnl
dnl Flags to the C compiler
dnl
dnl Make sure we find config.h
dnl
ERTS_CONFIG_H_IDIR="-I${ERL_TOP}/erts/$host"
AC_SUBST(ERTS_CONFIG_H_IDIR)
extra_flags="$ERTS_CONFIG_H_IDIR $OTP_EXTRA_FLAGS"
CFLAGS="$CFLAGS $extra_flags"
DEBUG_CFLAGS="-g $CPPFLAGS $extra_flags $DEBUG_CFLAGS"
DEBUG_FLAGS=-g
dnl
dnl Adjust DEBUG_CFLAGS to match CFLAGS in terms of -m
dnl
case $CFLAGS in
*-m64*)
case $DEBUG_CFLAGS in
*-m64*)
;;
*)
DEBUG_CFLAGS="-m64 $DEBUG_CFLAGS"
;;
esac
;;
*-m32*)
case $DEBUG_CFLAGS in
*-m32*)
;;
*)
DEBUG_CFLAGS="-m32 $DEBUG_CFLAGS"
;;
esac
;;
*)
;;
esac
lfs_conf=ok
lfs_source=none
if test "${LFS_CFLAGS+set}" = "set" || \
test "${LFS_LDFLAGS+set}" = "set" || \
test "${LFS_LIBS+set}" = "set"; then
lfs_source=user
else
LM_CHECK_GETCONF
test "$GETCONF" = "false" || lfs_source=getconf
fi
if test "$lfs_source" = "none"; then
AC_MSG_WARN([Do not know how to check for large file support flags; no getconf is available])
else
for var in CFLAGS LDFLAGS LIBS; do
AC_MSG_CHECKING([for large file support $var])
if test $lfs_source = user; then
eval "lfs_val=\"\$LFS_$var\""
else
eval "lfs_var=LFS_$var"
lfs_val=`$GETCONF $lfs_var 2>/dev/null` || lfs_conf=failed
if test $lfs_conf = failed; then
AC_MSG_RESULT([failed])
break
fi
eval "$lfs_var=\"$lfs_val\""
fi
test "$lfs_val" != "" || lfs_val=none
AC_MSG_RESULT([$lfs_val])
done
if test $lfs_conf = failed; then
AC_MSG_WARN([Check for large file support flags failed; $GETCONF failed])
else
CFLAGS="$CFLAGS $LFS_CFLAGS"
DEBUG_CFLAGS="$DEBUG_CFLAGS $LFS_CFLAGS"
LDFLAGS="$LDFLAGS $LFS_LDFLAGS"
LIBS="$LIBS $LFS_LIBS"
fi
fi
if test "x$GCC" = xyes; then
# Treat certain GCC warnings as errors
LM_TRY_ENABLE_CFLAG([-Werror=return-type], [WERRORFLAGS])
LM_TRY_ENABLE_CFLAG([-Werror=implicit], [WERRORFLAGS])
LM_TRY_ENABLE_CFLAG([-Werror=undef], [WERRORFLAGS])
# until the emulator can handle this, I suggest we turn it off!
#WFLAGS="-Wall -Wshadow -Wcast-qual -Wmissing-declarations"
WFLAGS="-Wall -Wstrict-prototypes"
case "$host_cpu" in
tile*)
# tile-gcc is a bit stricter with -Wmissing-prototypes than other gccs,
# and too strict for our taste.
;;
*)
WFLAGS="$WFLAGS -Wmissing-prototypes";;
esac
saved_CFLAGS=$CFLAGS
CFLAGS="$CFLAGS -Wdeclaration-after-statement"
AC_TRY_COMPILE([],[;], warn_decl_after_st=true, warn_decl_after_st=false)
if test "X$warn_decl_after_st" = "Xtrue"; then
WFLAGS="$WFLAGS -Wdeclaration-after-statement"
fi
CFLAGS=$saved_CFLAGS
else
WFLAGS=""
WERRORFLAGS=""
fi
AC_MSG_CHECKING([CFLAGS for -O switch])
case "$CFLAGS" in
*-O*) AC_MSG_RESULT([yes]) ;;
*)
AC_MSG_ERROR([
CFLAGS must contain a -O flag. If you need to edit the CFLAGS you probably
also want to add the default CFLAGS. The default CFLAGS are "-O2 -g".
If you want to build erts without any optimization, pass -O0 to CFLAGS.]) ;;
esac
dnl DEBUG_FLAGS is obsolete (I hope)
AC_SUBST(DEBUG_FLAGS)
AC_SUBST(DEBUG_CFLAGS)
AC_SUBST(WFLAGS)
AC_SUBST(WERRORFLAGS)
## Check if we can do profile guided optimization of beam_emu
LM_CHECK_ENABLE_CFLAG([-fprofile-generate -Werror],[PROFILE_GENERATE])
LM_CHECK_ENABLE_CFLAG([-fprofile-use -Werror],[PROFILE_USE])
LM_CHECK_ENABLE_CFLAG([-fprofile-use -fprofile-correction -Werror],[PROFILE_CORRECTION])
if test "X$PROFILE_CORRECTION" = "Xtrue"; then
saved_CFLAGS=$CFLAGS
saved_LDFLAGS=$LDFLAGS
CFLAGS="-fprofile-generate $saved_CFLAGS"
LDFLAGS="-fprofile-generate $saved_LDFLAGS"
AC_MSG_CHECKING([whether $CC links with -fprofile-generate])
AC_LINK_IFELSE([AC_LANG_PROGRAM([],[return 0;])],
[AC_MSG_RESULT([yes])
PROFILE_GENERATE=true],
[AC_MSG_RESULT([no])
PROFILE_GENERATE=false])
CFLAGS=$saved_CFLAGS
LDFLAGS=$saved_LDFLAGS
fi
## Check if this is clang
LM_CHECK_ENABLE_CFLAG([-fprofile-instr-generate -Werror],[PROFILE_INSTR_GENERATE])
if test "X$PROFILE_INSTR_GENERATE" = "Xtrue"; then
# It was clang, now we also have to check if we have llvm-profdata and that
# we can link programs with -fprofile-instr-use
saved_CFLAGS=$CFLAGS;
CFLAGS="-fprofile-instr-generate -Werror $saved_CFLAGS"
AC_RUN_IFELSE([AC_LANG_PROGRAM([],[])],
[AC_CHECK_PROGS([LLVM_PROFDATA], [llvm-profdata])
AC_CHECK_PROGS([XCRUN], [xcrun])
if test "X$XCRUN" != "X" -a "X$LLVM_PROFDATA" = "X"; then
AC_MSG_CHECKING([for $XCRUN llvm-profdata])
if $XCRUN llvm-profdata --help 2>& AS_MESSAGE_LOG_FD >& AS_MESSAGE_LOG_FD; then
LLVM_PROFDATA="$XCRUN llvm-profdata"
AC_MSG_RESULT([yes])
else
AC_MSG_RESULT([no])
fi
fi
AC_SUBST(LLVM_PROFDATA)
if test "X$LLVM_PROFDATA" != "X"; then
CFLAGS="-fprofile-instr-use=default.profdata -Werror $saved_CFLAGS";
$LLVM_PROFDATA merge -output=default.profdata *.profraw;
AC_MSG_CHECKING([whether $CC accepts -fprofile-instr-use=default.profdata -Werror])
AC_COMPILE_IFELSE([AC_LANG_PROGRAM([],[return 0;])],
[AC_MSG_RESULT([yes])
PROFILE_INSTR_USE=true],
[AC_MSG_RESULT([no])
PROFILE_INSTR_USE=false])
rm -f default.profdata
fi],
[],
[AC_MSG_NOTICE([Disabling PGO when cross-compiling])])
rm -f *.profraw
CFLAGS=$saved_CFLAGS;
fi
AC_ARG_ENABLE(pgo,
AS_HELP_STRING([--enable-pgo],
[build erts using PGO (profile guided optimization)]),
[ case "$enableval" in
no) enable_pgo=no ;;
*) enable_pgo=yes ;;
esac
],enable_pgo=default)
USE_PGO=false
AC_MSG_CHECKING([whether to do PGO of erts])
if test $enable_pgo = no; then
AC_MSG_RESULT([no, disabled by user])
elif test $CROSS_COMPILING = yes; then
if test $enable_pgo = yes; then
AC_MSG_ERROR(cannot use PGO when cross-compiling)
else
AC_MSG_RESULT([no, cross compiling])
fi
elif test "X$host" = "Xwin32"; then
AC_MSG_RESULT([no, not supported in windows])
elif test "X$PROFILE_GENERATE" = "Xtrue" -a "X$PROFILE_USE" = "Xtrue" -a "X$PROFILE_CORRECTION" = "Xtrue"; then
## We need -fprofile-generate and -fprofile-correction support to use PGO with
## gcc as multiple threads run within the executed object files
USE_PGO=true
PROFILE_COMPILER=gcc
AC_MSG_RESULT([yes, using -fprofile-generate -fprofile-correction])
elif test "X$PROFILE_INSTR_GENERATE" = "Xtrue" -a "X$PROFILE_INSTR_USE" = "Xtrue"; then
USE_PGO=true
PROFILE_COMPILER=clang
AC_MSG_RESULT([yes, using -fprofile-instr-generate])
else
if test $enable_pgo = yes; then
AC_MSG_ERROR(cannot use PGO with this compiler)
else
AC_MSG_RESULT([no])
fi
fi
AC_SUBST(USE_PGO)
AC_SUBST(PROFILE_COMPILER)
AC_CHECK_SIZEOF(void *) # Needed for ARCH and smp checks below
if test "x$ac_cv_sizeof_void_p" = x8; then
AC_SUBST(EXTERNAL_WORD_SIZE, 64)
else
AC_SUBST(EXTERNAL_WORD_SIZE, 32)
fi
dnl
dnl Figure out operating system and cpu architecture
dnl
if test "x$host_alias" != "x"; then
chk_opsys_=$host_os
else
chk_opsys_=`uname -s`
if test "x$chk_opsys_" = "xSunOS"; then
chk_opsys_=$chk_opsys_`uname -r`
fi
fi
case $chk_opsys_ in
win32) OPSYS=win32;;
solaris2.*|SunOS5.*) OPSYS=sol2;;
linux*|Linux) OPSYS=linux;;
darwin|Darwin) OPSYS=darwin;;
freebsd|FreeBSD) OPSYS=freebsd;;
*) OPSYS=noopsys
esac
AC_SUBST(OPSYS)
LM_HARDWARE_ARCH
dnl Check consistency of os and darwin-switches
dnl Take care of LDFLAGS on darwin, and disable common_test as it
dnl has a build/configure system re rx-lib that is not compatible
dnl First remove common_tests skip file.
dnl Adjust LDFLAGS to allow 64bit linkage on DARWIN
case $ARCH-$OPSYS in
amd64-darwin*)
AC_MSG_NOTICE([Adjusting LDFLAGS to cope with 64bit Darwin])
case $LDFLAGS in
*-m64*)
;;
*)
LDFLAGS="-m64 $LDFLAGS"
;;
esac
;;
*-darwin*)
case $LDFLAGS in
*-m32*)
;;
*)
LDFLAGS="-m32 $LDFLAGS"
;;
esac
;;
*)
if test X${enable_m64_build} = Xyes; then
AC_MSG_NOTICE([Adjusting LDFLAGS to use -m64])
case $LDFLAGS in
*-m64*)
;;
*)
LDFLAGS="-m64 $LDFLAGS"
;;
esac
fi;
if test X${enable_m32_build} = Xyes; then
AC_MSG_NOTICE([Adjusting LDFLAGS to use -m32]) ;
case $LDFLAGS in
*-m32*)
;;
*)
LDFLAGS="-m32 $LDFLAGS"
;;
esac ;
fi
;;
esac
AC_MSG_CHECKING(if VM has to be linked with Carbon framework)
case $ARCH-$OPSYS in
*-darwin*)
LIBCARBON="-framework Carbon -framework Cocoa"
AC_MSG_RESULT([yes])
;;
*)
LIBCARBON=
AC_MSG_RESULT([no])
;;
esac
AC_SUBST(LIBCARBON)
_search_path=/bin:/usr/bin:/usr/local/bin:$PATH
AC_PATH_PROG(MKDIR, mkdir, false, $_search_path)
if test "$ac_cv_path_MKDIR" = false; then
AC_MSG_ERROR([No 'mkdir' command found])
fi
AC_PATH_PROG(CP, cp, false, $_search_path)
if test "$ac_cv_path_CP" = false; then
AC_MSG_ERROR([No 'cp' command found])
fi
_search_path=
# Remove old configuration information.
# Next line should be before first output to CONN_INFO. So this is
# just the right place.
rm -f "$ERL_TOP/erts/CONF_INFO"
dnl Check if we should/can build a sharing-preserving emulator
AC_MSG_CHECKING(if we are building a sharing-preserving emulator)
if test "$enable_sharing_preserving" = "yes"; then
AC_DEFINE(SHCOPY, [1],
[Define if building a sharing-preserving emulator])
AC_MSG_RESULT([yes])
else
AC_MSG_RESULT([no])
fi
dnl some tests below will call this if we haven't already - and autoconf
dnl can't handle those tests being done conditionally at runtime
AC_PROG_CPP
AC_PROG_RANLIB
AC_PROG_YACC
LM_PROG_PERL5
if test "$ac_cv_path_PERL" = false; then
AC_MSG_ERROR([Perl version 5 is required to build the emulator!])
fi
AC_PROG_LN_S
AC_CHECK_TOOL([AR], [ar], [false])
if test "$ac_cv_prog_AR" = false; then
AC_MSG_ERROR([No 'ar' command found in PATH])
fi
#
# Get programs needed for building the documentation
#
## Delete previous failed configure results
if test -f doc/CONF_INFO; then
rm -f doc/CONF_INFO
fi
AC_CHECK_PROGS(XSLTPROC, xsltproc)
if test -z "$XSLTPROC"; then
echo "xsltproc" >> doc/CONF_INFO
AC_MSG_WARN([No 'xsltproc' command found: the documentation cannot be built])
fi
AC_CHECK_PROGS(FOP, fop)
if test -z "$FOP"; then
FOP="$ERL_TOP/make/fakefop"
echo "fop" >> doc/CONF_INFO
AC_MSG_WARN([No 'fop' command found: going to generate placeholder PDF files])
fi
AC_CHECK_PROGS(XMLLINT, xmllint)
if test -z "$XMLLINT"; then
echo "xmllint" >> doc/CONF_INFO
AC_MSG_WARN([No 'xmllint' command found: can't run the xmllint target for the documentation])
fi
dnl
dnl We can live with Solaris /usr/ucb/install
dnl
case $host in
*-*-solaris*|free_source)
if test -x /usr/ucb/install; then
INSTALL="/usr/ucb/install -c"
fi
;;
*)
;;
esac
AC_PROG_INSTALL
LM_PROG_INSTALL_DIR
case $host_os in
darwin*)
dnl Need to preserve modification time on archives;
dnl otherwise, ranlib has to be run on archives
dnl again after installation.
INSTALL_DATA="$INSTALL_DATA -p";;
*)
;;
esac
dnl
dnl Fix for Tilera install permissions
dnl
case $build in
*tile*)
INSTALL_PROGRAM="$INSTALL_PROGRAM -m755"
INSTALL_SCRIPT="$INSTALL_SCRIPT -m755"
;;
*)
;;
esac
dnl ----------------------------------------------------------------------
dnl Misc. things (some of them should go away)
dnl ----------------------------------------------------------------------
dnl
dnl An attempt to allow cross compiling. This is not the right way,
dnl nor does it work currently. Some makefiles still needs these
dnl variables, so we leave them in for now.
dnl
HCC='$(CC)' AC_SUBST(HCC)
HCFLAGS="" AC_SUBST(HCFLAGS)
HCFLAGS="$HCFLAGS -I${ERL_TOP}/erts/$host"
vxworks_reclaim="" AC_SUBST(vxworks_reclaim)
dnl We want to use $(CC) as linker for the emulator regardless of
dnl what the user say. This might not be the right way to do it, but
dnl for now that is the way we do it.
USER_LD=$LD
USER_LDFLAGS="$LDFLAGS"
LD='$(CC)'
case $host_os in
darwin*)
saved_LDFLAGS="$LDFLAGS"
LDFLAGS="$LDFLAGS -Wl,-no_weak_imports"
AC_TRY_LINK([],[],
[
LD_MAY_BE_WEAK=no
],
[
LD_MAY_BE_WEAK=yes
LDFLAGS="$saved_LDFLAGS"
]);;
*)
LD_MAY_BE_WEAK=no;;
esac
AC_SUBST(LD)
dnl Check for cygwin and object/exe files extension
dnl AC_CYGWIN is deprecated
AC_EXEEXT
AC_OBJEXT
dnl This is the os flavour, should be unix, ose, vxworks or win32
case $host in
win32)
ERLANG_OSTYPE=win32 ;;
*)
ERLANG_OSTYPE=unix ;;
esac
AC_SUBST(ERLANG_OSTYPE)
# Check how to export functions from the emulator executable, needed
# when dynamically loaded drivers are loaded (so that they can find
# emulator functions).
# OS'es with ELF executables using the GNU linker (Linux and recent *BSD,
# in rare cases Solaris) typically need '-Wl,-export-dynamic' (i.e. pass
# -export-dynamic to the linker - also known as -rdynamic and some other
# variants); some sysVr4 system(s) instead need(s) '-Wl,-Bexport'.
# AIX 4.x (perhaps only for x>=2) wants -Wl,-bexpall,-brtl and doesn't
# reliably return an error for others, thus we separate it out.
# Otherwise we assume that if the linker accepts the flag, it is needed.
AC_MSG_CHECKING(for extra flags needed to export symbols)
DEXPORT=""
case $host_os in
aix4*)
DEXPORT=-Wl,-bexpall,-brtl
;;
bsdi*)
DEXPORT="-rdynamic "
;;
win32)
DEXPORT=""
;;
*)
save_ldflags="$LDFLAGS"
LDFLAGS=-Wl,-export-dynamic
AC_TRY_LINK(,,[DEXPORT=-Wl,-export-dynamic], [
LDFLAGS=-Wl,-Bexport
AC_TRY_LINK(,,[DEXPORT=-Wl,-Bexport],
AC_MSG_RESULT(none))])
LDFLAGS="$save_ldflags"
;;
esac
AC_SUBST(DEXPORT)
case "x$DEXPORT" in
"x")
AC_MSG_RESULT([none]);;
*)
AC_MSG_RESULT([$DEXPORT]);;
esac
# Check for Solaris/ultrasparc /dev/perfmon interface
# (also needs gcc specific asm instructions)
case "${host}:${GCC}" in
sparc-*-solaris*:yes)
AC_DEFINE(HAVE_SOLARIS_SPARC_PERFMON,[1],
[define if you have the Solaris/ultrasparc /dev/perfmon interface])
;;
*)
;;
esac
dnl ----------------------------------------------------------------------
dnl Checks for libraries.
dnl ----------------------------------------------------------------------
AC_CHECK_LIB(m, sin)
AC_CHECK_LIB(dl, dlopen)
AC_CHECK_LIB(inet, main)
AC_CHECK_LIB(util, openpty)
dnl Try to find a thread library.
dnl
dnl ETHR_LIB_NAME, ETHR_LIBS, ETHR_X_LIBS, ETHR_THR_LIB_BASE and ETHR_DEFS
dnl are set by ERL_FIND_ETHR_LIB
ERL_FIND_ETHR_LIB
if test "X$ETHR_LIB_NAME" = "X"; then
AC_MSG_ERROR([cannot build emulator since no thread library was found])
fi
TYPES=opt
DIRTY_SCHEDULER_TEST=$enable_dirty_schedulers_test
AC_SUBST(DIRTY_SCHEDULER_TEST)
test $DIRTY_SCHEDULER_TEST != yes || {
test -f "$ERL_TOP/erts/CONF_INFO" || echo "" > "$ERL_TOP/erts/CONF_INFO"
cat >> $ERL_TOP/erts/CONF_INFO <<EOF
WARNING:
Dirty Scheduler Test has been enabled. This
feature is for debugging purposes only.
Poor performance as well as strange system
characteristics is expected!
EOF
}
test "X$smp_require_native_atomics" = "Xyes" &&
AC_DEFINE(ETHR_SMP_REQUIRE_NATIVE_IMPLS, 1, [Define if you want to enable check for native ethread implementations])
case "$ethr_have_native_atomics-$smp_require_native_atomics-$ethr_have_native_spinlock" in
yes-*)
if test "$ethr_native_atomic_implementation" = "gcc_sync"; then
test -f "$ERL_TOP/erts/CONF_INFO" ||
echo "" > "$ERL_TOP/erts/CONF_INFO"
cat >> $ERL_TOP/erts/CONF_INFO <<EOF
WARNING:
Only gcc's __sync_* builtins available for
atomic memory access. This will cause lots
of expensive and unnecessary memory barrier
instructions to be issued which will make
the performance of the runtime system
suffer. You are *strongly* advised to
upgrade to a gcc version that supports the
__atomic_* builtins (at least gcc version
4.7) or build with libatomic_ops. See the
"Atomic Memory Operations and the VM"
chapter of \$ERL_TOP/HOWTO/INSTALL.md for
more information.
EOF
fi
;;
no-yes-*)
AC_MSG_ERROR([No native atomic implementation found. See the \"Atomic Memory Operations and the VM\" chapter of \$ERL_TOP/HOWTO/INSTALL.md for more information.])
;;
no-no-yes)
test -f "$ERL_TOP/erts/CONF_INFO" ||
echo "" > "$ERL_TOP/erts/CONF_INFO"
cat >> $ERL_TOP/erts/CONF_INFO <<EOF
No native atomic implementation available.
Fallbacks implemented using spinlocks will be
used. Note that the performance of the SMP
runtime system will suffer immensely due to
this.
EOF
;;
no-no-no)
test -f "$ERL_TOP/erts/CONF_INFO" ||
echo "" > "$ERL_TOP/erts/CONF_INFO"
cat >> "$ERL_TOP/erts/CONF_INFO" <<EOF
No native atomic implementation, nor no native
spinlock implementation available. Fallbacks
implemented using mutexes will be used. Note
that the performance of the SMP runtime system
will suffer immensely due to this.
EOF
;;
esac
AC_SUBST(TYPES)
AC_CHECK_FUNCS([posix_fadvise closefrom])
AC_CHECK_HEADERS([linux/falloc.h])
dnl * Old glibcs have broken fallocate64(). Make sure not to use it.
AC_CACHE_CHECK([whether fallocate() works],i_cv_fallocate_works,[
AC_TRY_LINK([
#include <stdio.h>
#include <stdlib.h>
#include <fcntl.h>
#include <unistd.h>
#include <fcntl.h>
#include <linux/falloc.h>
],
[
int fd = creat("conftest.temp", 0600);
fallocate(fd, FALLOC_FL_KEEP_SIZE,(off_t) 1024,(off_t) 1024);
], i_cv_fallocate_works=yes, i_cv_fallocate_works=no)
])
if test $i_cv_fallocate_works = yes; then
AC_DEFINE(HAVE_FALLOCATE, 1, Define if you have a working fallocate())
fi
dnl * Old glibcs have broken posix_fallocate(). Make sure not to use it.
dnl * It may also be broken in AIX.
AC_CACHE_CHECK([whether posix_fallocate() works],i_cv_posix_fallocate_works,[
AC_TRY_RUN([
#if !defined(__sun) && !defined(__sun__)
#define _XOPEN_SOURCE 600
#endif
#include <stdio.h>
#include <stdlib.h>
#include <fcntl.h>
#include <unistd.h>
#if defined(__GLIBC__) && (__GLIBC__ < 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ < 7))
possibly broken posix_fallocate
#endif
int main() {
int fd = creat("conftest.temp", 0600);
int ret;
if (-1 == fd) {
perror("creat()");
return 2;
}
ret = posix_fallocate(fd, 1024, 1024) < 0 ? 1 : 0;
unlink("conftest.temp");
return ret;
}
], [
i_cv_posix_fallocate_works=yes
], [
i_cv_posix_fallocate_works=no
], [
i_cv_posix_fallocate_works=no
])
])
if test $i_cv_posix_fallocate_works = yes; then
AC_DEFINE(HAVE_POSIX_FALLOCATE,, Define if you have a working posix_fallocate())
fi
#
# EMU_THR_LIB_NAME, EMU_THR_LIBS, EMU_THR_X_LIBS, and EMU_THR_DEFS is
# used by the emulator, and can (but should not) be used by applications
# that only require thread support when the emulator has thread support.
# Other applications should use ETHR_LIB_NAME, ETHR_LIBS, ETHR_X_LIBS,
# and ETHR_DEFS.
#
EMU_THR_LIB_NAME=
EMU_THR_X_LIBS=
EMU_THR_LIBS=
EMU_THR_DEFS=
# Threads enabled for emulator
EMU_THR_LIB_NAME=$ETHR_LIB_NAME
EMU_THR_X_LIBS=$ETHR_X_LIBS
EMU_THR_LIBS=$ETHR_LIBS
EMU_THR_DEFS=$ETHR_DEFS
ENABLE_ALLOC_TYPE_VARS="$ENABLE_ALLOC_TYPE_VARS threads"
AC_MSG_CHECKING(whether lock checking should be enabled)
AC_MSG_RESULT($enable_lock_check)
if test "x$enable_lock_check" != "xno"; then
EMU_THR_DEFS="$EMU_THR_DEFS -DERTS_ENABLE_LOCK_CHECK"
fi
AC_MSG_CHECKING(whether lock counters should be enabled)
AC_MSG_RESULT($enable_lock_count)
if test "x$enable_lock_count" != "xno"; then
TYPES="$TYPES lcnt"
fi
case $host_os in
linux*)
AC_MSG_CHECKING([whether dlopen() needs to be called before first call to dlerror()])
if test "x$ETHR_THR_LIB_BASE_TYPE" != "xposix_nptl"; then
AC_DEFINE(ERTS_NEED_DLOPEN_BEFORE_DLERROR,[1],
[Define if dlopen() needs to be called before first call to dlerror()])
AC_MSG_RESULT(yes)
else
AC_MSG_RESULT(no)
fi
;;
*)
;;
esac
# Remove -D_WIN32_WINNT*, -DWINVER* and -D_GNU_SOURCE from EMU_THR_DEFS
# (defined in CFLAGS). Note that we want to keep these flags
# in ETHR_DEFS, but not in EMU_THR_DEFS.
new_emu_thr_defs=
for thr_def in $EMU_THR_DEFS; do
case $thr_def in
-D_GNU_SOURCE*|-D_WIN32_WINNT*|-DWINVER*)
;;
*)
new_emu_thr_defs="$new_emu_thr_defs $thr_def"
;;
esac
done
EMU_THR_DEFS=$new_emu_thr_defs
AC_SUBST(EMU_THR_LIB_NAME)
AC_SUBST(EMU_THR_X_LIBS)
AC_SUBST(EMU_THR_LIBS)
AC_SUBST(EMU_THR_DEFS)
if test "x$enable_lock_check" = "xno"; then
EMU_LOCK_CHECKING=no
else
EMU_LOCK_CHECKING=yes
fi
AC_SUBST(EMU_LOCK_CHECKING)
ERL_INTERNAL_LIBS
dnl THR_LIBS and THR_DEFS are only used by odbc
THR_LIBS=$ETHR_X_LIBS
THR_DEFS=$ETHR_DEFS
AC_SUBST(THR_LIBS)
AC_SUBST(THR_DEFS)
dnl ----------------------------------------------------------------------
dnl Try to figure out where to get the termcap functions from.
dnl We use tgetent(), tgetflag(), tgetnum(), tgetstr() and tputs()
dnl ----------------------------------------------------------------------
TERMCAP_LIB=
if test "x$with_termcap" != "xno" &&
test "X$host" != "Xwin32"; then
# try these libs
termcap_libs="tinfo ncurses curses termcap termlib"
for termcap_lib in $termcap_libs; do
AC_CHECK_LIB($termcap_lib, tgetent, TERMCAP_LIB="-l$termcap_lib")
if test "x$TERMCAP_LIB" != "x"; then
break
fi
done
if test "x$TERMCAP_LIB" = "x"; then
AC_MSG_ERROR([No curses library functions found])
fi
fi
AC_SUBST(TERMCAP_LIB)
if test "x$TERMCAP_LIB" != "x"; then
AC_DEFINE(HAVE_TERMCAP, 1, [Define if termcap functions exists])
fi
if test "X$host" != "Xwin32"; then
AC_MSG_CHECKING(for wcwidth)
AC_TRY_LINK([#include <wchar.h>], [wcwidth(0);],
have_wcwidth=yes, have_wcwidth=no)
if test $have_wcwidth = yes; then
AC_MSG_RESULT([yes])
AC_DEFINE(HAVE_WCWIDTH, [1],
[Define to 1 if you have a `wcwidth' function.])
fi
fi
dnl -------------
dnl zlib
dnl -------------
AC_ARG_ENABLE(builtin-zlib,
AS_HELP_STRING([--enable-builtin-zlib],
[force use of our own built-in zlib]),
[ case "$enableval" in
no) enable_builtin_zlib=no ;;
*) enable_builtin_zlib=yes ;;
esac ], enable_builtin_zlib=no)
Z_LIB=
if test "x$enable_builtin_zlib" = "xyes"; then
AC_DEFINE(HAVE_ZLIB_INFLATEGETDICTIONARY, 1,
[Define if your zlib version defines inflateGetDictionary.])
AC_MSG_NOTICE([Using our own built-in zlib source])
else
AC_MSG_CHECKING(for zlib 1.2.5 or higher)
zlib_save_LIBS=$LIBS
LIBS="-lz $LIBS"
AC_LINK_IFELSE(
[AC_LANG_PROGRAM([[
#include "zlib.h"
]],[[
#if ZLIB_VERNUM >= 0x1250
Bytef s[1];
s[0] = 0;
(void) adler32((uLong)0, s, 1);
#else
#error "No zlib 1.2.5 or higher found"
error
#endif
]])],
[
Z_LIB="-lz"
AC_DEFINE(HAVE_LIBZ, 1, [Define to 1 if you have the `z' library (-lz).])
AC_MSG_RESULT(yes)
],[
AC_MSG_RESULT(no)
])
if test "$Z_LIB" != ""; then
AC_MSG_CHECKING(for zlib inflateGetDictionary presence)
AC_SEARCH_LIBS(inflateGetDictionary, [z],
AC_DEFINE(HAVE_ZLIB_INFLATEGETDICTIONARY, 1,
[Define if your zlib version defines inflateGetDictionary.]))
fi
LIBS=$zlib_save_LIBS
fi
AC_SUBST(Z_LIB)
dnl -------------
dnl esock
dnl -------------
AC_ARG_ENABLE(esock,
AS_HELP_STRING([--enable-esock], [enable builtin experimental socket (as a nif) support (default)])
AS_HELP_STRING([--disable-esock], [disable builtin experimental socket (as a nif) support]))
dnl Default value
USE_ESOCK=yes
if test "x$enable_esock" = "xyes"; then
USE_ESOCK=yes
else
if test "x$enable_esock" = "xno"; then
USE_ESOCK=no
fi
fi
if test "x$USE_ESOCK" = "xyes"; then
if test "x$USE_ESOCK" = "xyes"; then
AC_CHECK_FUNCS([localtime_r strftime])
fi
fi
AC_SUBST(USE_ESOCK)
dnl
dnl This test kindly borrowed from Tcl
dnl
#--------------------------------------------------------------------
# Check for the existence of the -lsocket and -lnsl libraries.
# The order here is important, so that they end up in the right
# order in the command line generated by make. Here are some
# special considerations:
# 1. Use "connect" and "accept" to check for -lsocket, and
# "gethostbyname" to check for -lnsl.
# 2. Use each function name only once: can't redo a check because
# autoconf caches the results of the last check and won't redo it.
# 3. Use -lnsl and -lsocket only if they supply procedures that
# aren't already present in the normal libraries. This is because
# IRIX 5.2 has libraries, but they aren't needed and they're
# bogus: they goof up name resolution if used.
# 4. On some SVR4 systems, can't use -lsocket without -lnsl too.
# To get around this problem, check for both libraries together
# if -lsocket doesn't work by itself.
#--------------------------------------------------------------------
tk_oldLibs=$LIBS
erl_checkBoth=0
SOCKET_LIBS=""
AC_CHECK_FUNC(connect, erl_checkSocket=0, erl_checkSocket=1)
if test "$erl_checkSocket" = 1; then
AC_CHECK_LIB(socket, main, SOCKET_LIBS="-lsocket", erl_checkBoth=1)
fi
if test "$erl_checkBoth" = 1; then
LIBS="$LIBS -lsocket -lnsl"
AC_CHECK_FUNC(accept, SOCKET_LIBS="-lsocket -lnsl")
fi
LIBS="$tk_oldLibs $SOCKET_LIBS"
AC_CHECK_FUNC(gethostbyname, , AC_CHECK_LIB(nsl, main, [SOCKET_LIBS="$SOCKET_LIBS -lnsl"]))
AC_CHECK_FUNC(gethostbyname_r,have_gethostbyname_r=yes)
LIBS="$tk_oldLibs $SOCKET_LIBS"
AC_SUBST(SOCKET_LIBS)
dnl
dnl These gethostbyname thingies use old style AC_DEFINE for BC with ancient
dnl autoconf...
dnl
if test "$have_gethostbyname_r" = yes; then
# OK, so we have gethostbyname_r() - but do we know how to call it...?
# (if not, HAVE_GETHOSTBYNAME_R will not be defined at all)
case $host_os in
solaris2*)
AC_DEFINE(HAVE_GETHOSTBYNAME_R, GHBN_R_SOLARIS,
[Define to flavour of gethostbyname_r])
;;
aix4*)
# AIX version also needs "struct hostent_data" defn
AC_TRY_COMPILE([#include <netdb.h>],
[struct hostent_data hd;],
AC_DEFINE(HAVE_GETHOSTBYNAME_R, GHBN_R_AIX,
[Define to flavour of gethostbyname_r]))
;;
*)
AC_EGREP_CPP(^yes$,[
#include <stdio.h>
#ifdef __GLIBC__
yes
#endif
], AC_DEFINE(HAVE_GETHOSTBYNAME_R, GHBN_R_GLIBC,
[Define to flavour of gethostbyname_r]))
;;
esac
fi
AC_MSG_CHECKING(for working posix_openpt implementation)
AC_TRY_LINK([
#define _XOPEN_SOURCE 600
#include <stdlib.h>
#include <fcntl.h>
],
[
int mfd = posix_openpt(O_RDWR);
ptsname(mfd);
grantpt(mfd);
unlockpt(mfd);
return mfd;
], working_posix_openpt=yes, working_posix_openpt=no)
if test "X$working_posix_openpt" = "Xyes"; then
AC_DEFINE(HAVE_WORKING_POSIX_OPENPT, [1],
[Define if you have a working posix_openpt implementation])
AC_MSG_RESULT(yes)
else
AC_MSG_RESULT(no)
fi
dnl Check for usage of sockaddr_in in netdb.h
dnl somewhat ugly check, I check for presence of the string and that
dnl compilation works. If either fails I assume it's not needed.
dnl Seems only to be needed on a patched version of solaris2.5.1, with
dnl netdb.h version 1.18.
AC_MSG_CHECKING([if netdb.h requires netinet/in.h to be previously included])
AC_EGREP_CPP(sockaddr_in,
[#include <netdb.h>],
AC_TRY_COMPILE([#include <netinet/in.h>
#include <netdb.h>],
[return 0;],
need_in_h=yes,
need_in_h=no),
need_in_h=no)
if test $need_in_h = yes; then
AC_DEFINE(NETDB_H_NEEDS_IN_H,[1],
[Define if netdb.h needs struct sockaddr_in ans in.h CAN be included before])
AC_MSG_RESULT(yes)
else
AC_MSG_RESULT(no)
fi
dnl Check for type socklen_t
dnl
AC_MSG_CHECKING([for socklen_t])
AC_TRY_COMPILE( [#include <sys/socket.h>],
[socklen_t test;],
have_socklen_t=yes,
have_socklen_t=no),
if test $have_socklen_t = yes; then
AC_DEFINE(HAVE_SOCKLEN_T,[1],[Define if we have socklen_t])
AC_MSG_RESULT(yes)
else
AC_MSG_RESULT(no)
fi
dnl h_errno isn't always declared in netdb.h, and with some definitions
dnl (e.g. function call for thread-safe) a simple 'extern int' may conflict
dnl (we do assume that h_errno exists at all...)
AC_CACHE_CHECK([for h_errno declaration in netdb.h],
ac_cv_decl_h_errno,
[AC_TRY_COMPILE([#include <netdb.h>], [int err = h_errno;],
ac_cv_decl_h_errno=yes, ac_cv_decl_h_errno=no)])
if test $ac_cv_decl_h_errno = yes; then
AC_DEFINE(H_ERRNO_DECLARED,[1],
[define if h_errno is declared (in some way) in a system header file])
fi
dnl ----------------------------------------------------------------------
dnl Checks for header files.
dnl ----------------------------------------------------------------------
dnl We sometimes need EMU_THR_DEFS in order to find certain headers.
saved_cppflags=$CPPFLAGS
CPPFLAGS="$CPPFLAGS $EMU_THR_DEFS"
AC_HEADER_DIRENT
AC_HEADER_STDC
AC_HEADER_SYS_WAIT
AC_HEADER_TIME
dnl Interactive UX needs <net/errno.h> for socket related error codes.
dnl Some Linuxes needs <sys/socketio.h> instead of <sys/sockio.h>
dnl
AC_CHECK_HEADERS(fcntl.h limits.h unistd.h syslog.h dlfcn.h ieeefp.h \
sys/types.h sys/stropts.h sys/sysctl.h \
sys/ioctl.h sys/time.h sys/uio.h sys/mman.h \
sys/socket.h sys/sockio.h sys/socketio.h \
net/errno.h malloc.h arpa/nameser.h libdlpi.h \
pty.h util.h libutil.h utmp.h langinfo.h poll.h sdkddkver.h)
AC_CHECK_MEMBERS([struct ifreq.ifr_hwaddr], [], [],
[#ifdef __WIN32__
#else
#ifdef VXWORKS
#else
#include <net/if.h>
#endif
#endif
])
AC_CHECK_MEMBERS([struct ifreq.ifr_enaddr], [], [],
[#ifdef __WIN32__
#else
#ifdef VXWORKS
#else
#include <net/if.h>
#endif
#endif
])
dnl ----------------------------------------------------------------------
dnl Check the availability of systemd
dnl ----------------------------------------------------------------------
if test x"$enable_systemd" != x"no"; then
systemd_daemon_save_LIBS=$LIBS
LIBS=
AC_SEARCH_LIBS(sd_listen_fds,[systemd systemd-daemon],
[have_sd_listen_fds=yes],[have_sd_listen_fds=no],$systemd_daemon_save_LIBS)
AC_SEARCH_LIBS(sd_notify,[systemd systemd-daemon],
[have_sd_notify=yes],[have_sd_notify=no],$systemd_daemon_save_LIBS)
AC_CHECK_HEADERS(systemd/sd-daemon.h,
[have_systemd_sd_daemon_h=yes],[have_systemd_sd_daemon_h=no])
if test x"$have_sd_listen_fds" = x"yes" && \
test x"$have_sd_notify" = x"yes" && \
test x"$have_systemd_sd_daemon_h" = x"yes"; then
AC_DEFINE([HAVE_SYSTEMD_DAEMON],[1],[Define if you have systemd daemon])
SYSTEMD_DAEMON_LIBS=$LIBS
elif test x"$enable_systemd" = x"yes"; then
AC_MSG_FAILURE([--enable-systemd was given, but test for systemd failed])
fi
LIBS=$systemd_daemon_save_LIBS
fi
AC_SUBST(SYSTEMD_DAEMON_LIBS)
dnl ----------------------------------------------------------------------
dnl Check the availability for libdlpi
dnl ----------------------------------------------------------------------
AC_CHECK_LIB(dlpi, dlpi_open)
if test x"$ac_cv_lib_dlpi_dlpi_open" = x"no"; then
unset -v ac_cv_lib_dlpi_dlpi_open
dnl Try again now with -L/lib (or ditto 64) as argument to linker since
dnl gcc makes /usr/ccs/bin/ld ignore the crle configured linker default paths
dnl typically causing dlpi not being found on Solaris et.al
save_ldflags="$LDFLAGS"
try_dlpi_lib=/lib
if test x"$ac_cv_sizeof_void_p" = x"8"; then
if test -d /lib64; then
try_dlpi_lib=/lib64
elif test -d /lib/64; then
try_dlpi_lib=/lib/64
fi
fi
if test ! -f "$try_dlpi_lib/libdlpi.so" && \
test -f "$try_dlpi_lib/libdlpi.so.1"
then
dnl It looks like there is a missing symlink
dnl - let's be helpful and notify the user
dnl NOTE this help is far from perfect e.g if there would be no
dnl *.so.1 but a *.so.1.123 or *.so.2 this will be no help
AC_MSG_ERROR(
[Your OS installation is missing a symbolic link.
Maybe it lacks some development package(s)...
It can anyhow be fixed with the following command:
# ln -s libdlpi.so.1 $try_dlpi_lib/libdlpi.so
])
fi
LDFLAGS="-L$try_dlpi_lib -R$try_dlpi_lib $LDFLAGS"
unset -v try_dlpi_lib
AC_MSG_NOTICE([Extending the search to include /lib])
AC_CHECK_LIB(dlpi, dlpi_open)
if test x"$ac_cv_lib_dlpi_dlpi_open" = x"no"; then
LDFLAGS="$save_ldflags"
fi
unset -v save_ldflags
fi
AC_CHECK_HEADER(sys/resource.h,
[AC_DEFINE(HAVE_SYS_RESOURCE_H, 1,
[Define to 1 if you have the <sys/resource.h> header file])
AC_CHECK_DECLS([getrlimit, setrlimit, RLIMIT_STACK],
[],[],
[#include <sys/resource.h>])],
[],[])
AC_CHECK_FUNCS([getrusage])
dnl Check if we have kernel poll support
have_kernel_poll=no
AC_CHECK_HEADER(sys/event.h, have_kernel_poll=kqueue)
AC_CHECK_HEADER(sys/epoll.h, have_kernel_poll=epoll)
AC_CHECK_HEADER(sys/devpoll.h, have_kernel_poll=/dev/poll)
dnl Check if we have timerfds to be used for high accuracy
dnl epoll_wait timeouts
AC_CHECK_HEADERS([sys/timerfd.h])
dnl Check for kernel SCTP support
AC_SUBST(LIBSCTP)
if test "x$enable_sctp" != "xno" ; then
AC_CHECK_HEADER(netinet/sctp.h,
[LIBSCTP=libsctp.so.1
AC_DEFINE(HAVE_SCTP_H, [1],
[Define to 1 if you have the <netinet/sctp.h> header file])],
[],
[#if HAVE_SYS_SOCKET_H
#include <sys/socket.h>
#endif
])
fi
if test x"$ac_cv_header_netinet_sctp_h" = x"yes"; then
AS_IF([test "x$enable_sctp" = "xlib"],
AC_CHECK_LIB(sctp, sctp_bindx))
AC_CHECK_FUNCS([sctp_bindx sctp_peeloff sctp_getladdrs sctp_freeladdrs sctp_getpaddrs sctp_freepaddrs])
AC_CHECK_DECLS([SCTP_UNORDERED, SCTP_ADDR_OVER, SCTP_ABORT,
SCTP_EOF, SCTP_SENDALL, SCTP_ADDR_CONFIRMED,
SCTP_DELAYED_ACK_TIME,
SCTP_EMPTY, SCTP_UNCONFIRMED,
SCTP_CLOSED, SCTPS_IDLE,
SCTP_BOUND, SCTPS_BOUND,
SCTP_LISTEN, SCTPS_LISTEN,
SCTP_COOKIE_WAIT, SCTPS_COOKIE_WAIT,
SCTP_COOKIE_ECHOED, SCTPS_COOKIE_ECHOED,
SCTP_ESTABLISHED, SCTPS_ESTABLISHED,
SCTP_SHUTDOWN_PENDING, SCTPS_SHUTDOWN_PENDING,
SCTP_SHUTDOWN_SENT, SCTPS_SHUTDOWN_SENT,
SCTP_SHUTDOWN_RECEIVED, SCTPS_SHUTDOWN_RECEIVED,
SCTP_SHUTDOWN_ACK_SENT, SCTPS_SHUTDOWN_ACK_SENT], [], [],
[#if HAVE_SYS_SOCKET_H
#include <sys/socket.h>
#endif
#include <netinet/sctp.h>
])
AC_CHECK_MEMBERS([struct sctp_paddrparams.spp_pathmtu,
struct sctp_paddrparams.spp_sackdelay,
struct sctp_paddrparams.spp_flags,
struct sctp_remote_error.sre_data,
struct sctp_send_failed.ssf_data,
struct sctp_event_subscribe.sctp_authentication_event,
struct sctp_event_subscribe.sctp_sender_dry_event], [], [],
[#if HAVE_SYS_SOCKET_H
#include <sys/socket.h>
#endif
#include <netinet/sctp.h>
])
fi
dnl Check for setns
AC_CHECK_HEADERS(sched.h setns.h)
AC_CHECK_FUNCS([setns])
HAVE_VALGRIND=no
AC_CHECK_HEADER(valgrind/valgrind.h, HAVE_VALGRIND=yes)
AC_SUBST(HAVE_VALGRIND)
LM_DECL_SO_BSDCOMPAT
LM_DECL_INADDR_LOOPBACK
LM_DECL_SYS_ERRLIST
AC_CACHE_CHECK([if windows.h includes winsock2.h],
erts_cv_windows_h_includes_winsock2_h,
AC_TRY_COMPILE([#include <windows.h>
],
[#ifndef _WINSOCK2API_
#error winsock2.h not included
#endif
int i = 1;
],
erts_cv_windows_h_includes_winsock2_h=yes,
erts_cv_windows_h_includes_winsock2_h=no))
if test $erts_cv_windows_h_includes_winsock2_h = yes; then
AC_DEFINE(WINDOWS_H_INCLUDES_WINSOCK2_H, 1, \
[Define if windows.h includes winsock2.h])
fi
dnl restore CPPFLAGS
CPPFLAGS=$saved_cppflags
dnl ----------------------------------------------------------------------
dnl Checks for typedefs, structures, and compiler characteristics.
dnl ----------------------------------------------------------------------
AC_C_CONST
AC_TYPE_SIGNAL
AC_TYPE_OFF_T
AC_TYPE_PID_T
AC_TYPE_SIZE_T
AC_STRUCT_TM
LM_STRUCT_SOCKADDR_SA_LEN
LM_STRUCT_EXCEPTION
AC_CHECK_SIZEOF(char, 1)
AC_CHECK_SIZEOF(short)
AC_CHECK_SIZEOF(int)
AC_CHECK_SIZEOF(long)
AC_CHECK_SIZEOF(void *)
AC_CHECK_SIZEOF(long long)
AC_CHECK_SIZEOF(size_t)
AC_CHECK_SIZEOF(off_t)
AC_CHECK_SIZEOF(time_t)
BITS64=
if test $ac_cv_sizeof_void_p = 8; then
BITS64=yes
fi
AC_SUBST(BITS64)
AC_MSG_CHECKING([for C compiler 'restrict' support])
restrict_keyword=""
for x in restrict __restrict; do
AC_TRY_COMPILE([int * $x foo(int * $x arg);
int * $x foo(int * $x arg)
{ int * $x var=arg; return var;}
],[],
[restrict_keyword=$x],[])
if test "x$restrict_keyword" != "x"; then
break
fi
done
AC_DEFINE_UNQUOTED(ERTS_RESTRICT,[$restrict_keyword],[Type qualifier restrict])
if test "x$restrict_keyword" != "x"; then
AC_MSG_RESULT(yes)
else
AC_MSG_RESULT(no)
fi
if test "x$ac_compiler_gnu" = "xyes"; then
AC_MSG_CHECKING([if we should add -fno-tree-copyrename to CFLAGS for computed gotos to work properly])
AC_TRY_COMPILE([],[
#if __GNUC__ > 4 || (__GNUC__ == 4 && __GNUC_MINOR__ >= 3)
;
#else
#error old and ok
#endif
],
no_tree_copyrename=yes,
no_tree_copyrename=no)
if test "x$no_tree_copyrename" = "xyes"; then
CFLAGS="$CFLAGS -fno-tree-copyrename"
AC_MSG_RESULT(yes, adjusting CFLAGS)
else
AC_MSG_RESULT(no)
fi
AC_MSG_CHECKING([for broken gcc-4.3.0 compiler])
AC_TRY_RUN([
/* pr36339.c */
extern void abort (void);
typedef unsigned long my_uintptr_t;
int check_a(my_uintptr_t tagged_ptr);
int __attribute__((noinline)) try_a(my_uintptr_t x)
{
my_uintptr_t heap[2];
my_uintptr_t *hp = heap;
hp[0] = x;
hp[1] = 0;
return check_a((my_uintptr_t)(void*)((char*)hp + 1));
}
int __attribute__((noinline)) check_a(my_uintptr_t tagged_ptr)
{
my_uintptr_t *hp = (my_uintptr_t*)(void*)((char*)tagged_ptr - 1);
if (hp[0] == 42 && hp[1] == 0)
return 0;
return -1;
}
int main(void)
{
if (try_a(42) < 0)
abort ();
return 0;
}
], gcc_4_3_0_bug=no, gcc_4_3_0_bug=yes, gcc_4_3_0_bug=cross)
case $gcc_4_3_0_bug in
yes|no)
gcc_4_3_0_bug_result=$gcc_4_3_0_bug;;
cross)
gcc_dumped_vsn=`$CC -dumpversion 2>/dev/null`
case gcc-$gcc_dumped_vsn in
gcc-4.3.0) gcc_4_3_0_bug=yes;;
*) gcc_4_3_0_bug=no;;
esac
gcc_4_3_0_bug_result="$gcc_4_3_0_bug; could not run test since cross compiling, checked version number ($gcc_dumped_vsn) instead";;
esac
AC_MSG_RESULT([$gcc_4_3_0_bug_result])
if test $gcc_4_3_0_bug = yes; then
AC_MSG_ERROR([This gcc miscompiles the Erlang runtime system; please use a different version])
fi
fi
case X$erl_xcomp_bigendian in
X) ;;
Xyes|Xno) ac_cv_c_bigendian=$erl_xcomp_bigendian;;
*) AC_MSG_ERROR([Bad erl_xcomp_bigendian value: $erl_xcomp_bigendian]);;
esac
AC_C_BIGENDIAN(
[
AC_DEFINE([WORDS_BIGENDIAN], [1], [Define if big-endian])
AC_DEFINE([ERTS_ENDIANNESS], [1], [Define > 0 if big-endian < 0 if little-endian, or 0 if unknown])
],
[
AC_DEFINE([ERTS_ENDIANNESS], [-1], [Define > 0 if big-endian < 0 if little-endian, or 0 if unknown])
],
[
case "$erl_xcomp_bigendian" in
yes)
AC_DEFINE([ERTS_ENDIANNESS], [1], [Define > 0 if big-endian < 0 if little-endian, or 0 if unknown]);;
no)
AC_DEFINE([ERTS_ENDIANNESS], [-1], [Define > 0 if big-endian < 0 if little-endian, or 0 if unknown]);;
*)
AC_DEFINE([ERTS_ENDIANNESS], [0], [Define > 0 if big-endian < 0 if little-endian, or 0 if unknown]);;
esac
])
AC_C_DOUBLE_MIDDLE_ENDIAN
dnl fdatasync syscall (Unix only)
AC_CHECK_FUNCS([fdatasync])
dnl Find which C libraries are required to use fdatasync
dnl TODO: Remove check once SunOS >= 5.11 is required by erts.
dnl fdatasync requires linking against -lrt on SunOS <= 5.10.
dnl OpenSolaris 2009.06 is SunOS 5.11 and does not require -lrt.
AC_SEARCH_LIBS(fdatasync, [rt])
dnl sendfile syscall
case $host_os in
linux*|freebsd*|dragonfly*|darwin*)
AC_CHECK_FUNCS([sendfile])
;;
solaris*)
AC_SEARCH_LIBS(sendfilev, sendfile,
AC_DEFINE([HAVE_SENDFILEV],[1],
[Define to 1 if you have the `sendfilev' function.]))
;;
win32)
LIBS="$LIBS -lmswsock"
;;
*)
;;
esac
dnl ----------------------------------------------------------------------
dnl Checks for library functions.
dnl ----------------------------------------------------------------------
dnl We may need the thread library and thread flags in order to find right stuff
saved_cppflags=$CPPFLAGS
CPPFLAGS="$CPPFLAGS $EMU_THR_DEFS"
saved_libs=$LIBS
LIBS="$LIBS $EMU_THR_X_LIBS"
dnl Check if we have these, in which case we'll try to build
dnl inet_gethost with ipv6 support.
AC_CHECK_HEADERS(windows.h)
AC_CHECK_HEADERS(winsock2.h)
AC_CHECK_HEADERS(ws2tcpip.h,[],[],[
#ifdef HAVE_WINSOCK2_H
#include <winsock2.h>
#endif
#ifdef HAVE_WINDOWS_H
#include <windows.h>
#endif
])
dnl AC_CHECK_FUNC(getaddrinfo, have_getaddrinfo=yes, have_getaddrinfo=no)
AC_MSG_CHECKING(for getaddrinfo)
AC_TRY_LINK([
#include <stdlib.h>
#include <string.h>
#ifdef HAVE_WINSOCK2_H
#include <winsock2.h>
#endif
#ifdef HAVE_WINDOWS_H
#include <windows.h>
#endif
#ifdef HAVE_WS2TCPIP_H
#include <ws2tcpip.h>
#endif
#ifndef __WIN32__
#include <sys/socket.h>
#include <netdb.h>
#endif
],
[
getaddrinfo("","",NULL,NULL);
],have_getaddrinfo=yes, have_getaddrinfo=no)
if test $have_getaddrinfo = yes; then
AC_MSG_RESULT([yes])
AC_MSG_CHECKING([whether getaddrinfo accepts enough flags])
AC_TRY_LINK([
#include <stdlib.h>
#include <string.h>
#ifdef HAVE_WINSOCK2_H
#include <winsock2.h>
#endif
#ifdef HAVE_WINDOWS_H
#include <windows.h>
#endif
#ifdef HAVE_WS2TCPIP_H
#include <ws2tcpip.h>
#endif
#ifndef __WIN32__
#include <sys/socket.h>
#include <netdb.h>
#endif
],
[
struct addrinfo hints, *ai;
memset(&hints, 0, sizeof(hints));
hints.ai_flags = AI_CANONNAME;
hints.ai_socktype = SOCK_STREAM;
hints.ai_family = AF_INET6;
if (getaddrinfo("::", NULL, &hints, &ai) == 0) {
freeaddrinfo(ai);
exit(0);
} else {
exit(1);
}
],, have_getaddrinfo=no)
AC_MSG_RESULT($have_getaddrinfo)
case $have_getaddrinfo in
yes)
AC_DEFINE(HAVE_GETADDRINFO, [1],
[Define to 1 if you have a good `getaddrinfo' function.]);;
*) ;;
esac
else
AC_MSG_RESULT([no])
fi
AC_MSG_CHECKING(for getnameinfo)
AC_TRY_LINK([
#include <stdlib.h>
#include <string.h>
#ifdef HAVE_WINSOCK2_H
#include <winsock2.h>
#endif
#ifdef HAVE_WINDOWS_H
#include <windows.h>
#endif
#ifdef HAVE_WS2TCPIP_H
#include <ws2tcpip.h>
#endif
#ifndef __WIN32__
#include <sys/socket.h>
#include <netdb.h>
#endif
],
[
getnameinfo(NULL,0,NULL,0,NULL,0,0);
],have_getnameinfo=yes, have_getnameinfo=no)
if test $have_getnameinfo = yes; then
AC_MSG_RESULT([yes])
AC_DEFINE(HAVE_GETNAMEINFO, [1],
[Define to 1 if you have a good `getnameinfo' function.])
else
AC_MSG_RESULT([no])
fi
AC_CHECK_FUNCS([getipnodebyname getipnodebyaddr gethostbyname2])
AC_CHECK_FUNCS([ieee_handler fpsetmask finite isnan isinf res_gethostbyname dlopen \
pread pwrite memmove strerror strerror_r strncasecmp \
gethrtime localtime_r gmtime_r inet_pton mprotect \
mmap mremap memcpy mallopt sbrk _sbrk __sbrk brk _brk __brk \
flockfile fstat strlcpy strlcat setsid posix2time time2posix \
setlocale nl_langinfo poll mlockall ppoll])
AC_MSG_CHECKING([for isfinite])
AC_TRY_LINK([#include <math.h>],
[isfinite(0);], have_isfinite=yes, have_isfinite=no),
if test $have_isfinite = yes; then
AC_DEFINE(HAVE_ISFINITE,[1],
[Define to 1 if you have the `isfinite' function.])
AC_MSG_RESULT(yes)
else
AC_MSG_RESULT(no)
fi
case X$erl_xcomp_posix_memalign in
Xno) ;;
Xyes) have_posix_memalign=yes ;;
*)
AC_CHECK_FUNC(
[posix_memalign],
[if test "$cross_compiling" != yes; then
AC_TRY_RUN([
#include <stdlib.h>
int main(void) {
void *ptr = NULL;
int error;
size_t alignment = 0x40000, size = 0x20028;
if ((error = posix_memalign(&ptr, alignment, size)) != 0 || ptr == NULL)
return error;
return 0;
}
],have_posix_memalign=yes
)
else
have_posix_memalign=yes
fi]);;
esac
if test "$have_posix_memalign" = "yes"; then
AC_DEFINE(HAVE_POSIX_MEMALIGN,[1],
[Define to 1 if you have the `posix_memalign' function.])
fi
dnl writev on OS X snow leopard is broken for files > 4GB
case $host_os in
darwin10.8.0)
AC_MSG_CHECKING([for writev])
AC_MSG_RESULT(no, not stable on OS X Snow Leopard) ;;
*)
AC_CHECK_FUNCS([writev]) ;;
esac
AC_CHECK_DECLS([posix2time, time2posix],,,[#include <time.h>])
AC_FUNC_VPRINTF
dnl The AC_DEFINEs are necessary for autoheader to work. :-(
dnl for gzio
LM_CHECK_FUNC_DECL(fread, [extern int fread();],,
AC_DEFINE(HAVE_CONFLICTING_FREAD_DECLARATION,[1],[Define if you have a decl of fread that conflicts with int fread]))
dnl Checking with TRY_LINK since putc_unlocked might be (probably is) a macro
AC_CACHE_CHECK([for putc_unlocked],
erts_cv_putc_unlocked,
AC_TRY_LINK([#include <stdio.h>],
[int res = putc_unlocked('x',stdout);],
erts_cv_putc_unlocked=yes,
erts_cv_putc_unlocked=no))
if test $erts_cv_putc_unlocked = yes; then
AC_DEFINE(HAVE_PUTC_UNLOCKED, 1, [Define if you have putc_unlocked])
fi
dnl Checking with TRY_LINK since fwrite_unlocked might be a macro
AC_CACHE_CHECK([for fwrite_unlocked],
erts_cv_fwrite_unlocked,
AC_TRY_LINK([#include <stdio.h>],
[size_t res = fwrite_unlocked(NULL,sizeof(char),0,stdout);],
erts_cv_fwrite_unlocked=yes,
erts_cv_fwrite_unlocked=no))
if test $erts_cv_fwrite_unlocked = yes; then
AC_DEFINE(HAVE_FWRITE_UNLOCKED, 1, [Define if you have fwrite_unlocked])
fi
dnl Need by run_erl.
AC_CHECK_FUNCS([openpty])
AC_CHECK_HEADERS(net/if_dl.h ifaddrs.h netpacket/packet.h sys/un.h)
AC_CHECK_FUNCS([getifaddrs])
dnl Checks for variables in6addr_any and in6addr_loopback,
dnl
dnl They normally declared by netinet/in.h, according to POSIX,
dnl but not on Windows 7 (Windows SDK 7.1). I would have liked
dnl to just write AC_CHECK_DECL([in6addr_any], ...) but if doing so,
dnl the configure check fails erroneously on Linux with the error
dnl "cannot convert to a pointer type", on a line looking like
dnl "char *p = (char *) in6addr_any;", so work around that
dnl with some more code.
AC_CACHE_CHECK(
[whether in6addr_any is declared],
[erts_cv_have_in6addr_any],
[AC_LINK_IFELSE(
[AC_LANG_PROGRAM(
[[
#include <sys/types.h>
#include <sys/socket.h>
#include <netinet/in.h>
]],
[[printf("%d", in6addr_any.s6_addr[16]);]]
)],
[erts_cv_have_in6addr_any=yes],
[erts_cv_have_in6addr_any=no]
)]
)
case "$erts_cv_have_in6addr_any" in
yes)
AC_DEFINE([HAVE_IN6ADDR_ANY], [1],
[Define to 1 if you have the variable in6addr_any declared.])
esac
AC_CACHE_CHECK(
[whether in6addr_loopback is declared],
[erts_cv_have_in6addr_loopback],
[AC_LINK_IFELSE(
[AC_LANG_PROGRAM(
[[
#include <sys/types.h>
#include <sys/socket.h>
#include <netinet/in.h>
]],
[[printf("%d", in6addr_loopback.s6_addr[16]);]]
)],
[erts_cv_have_in6addr_loopback=yes],
[erts_cv_have_in6addr_loopback=no]
)]
)
case "$erts_cv_have_in6addr_loopback" in
yes)
AC_DEFINE([HAVE_IN6ADDR_LOOPBACK], [1],
[Define to 1 if you have the variable in6addr_loopback declared.])
esac
AC_CHECK_DECLS([IN6ADDR_ANY_INIT, IN6ADDR_LOOPBACK_INIT, IPV6_V6ONLY], [], [],
[
#include <sys/types.h>
#include <sys/socket.h>
#include <netinet/in.h>
])
dnl ----------------------------------------------------------------------
dnl Checks for features/quirks in the system that affects Erlang.
dnl ----------------------------------------------------------------------
AC_MSG_CHECKING([for sched_getaffinity/sched_setaffinity])
AC_TRY_LINK([#include <sched.h>],
[
#ifndef CPU_SETSIZE
#error no CPU_SETSIZE
#endif
int res;
cpu_set_t cpuset;
CPU_ZERO(&cpuset);
CPU_SET(1, &cpuset);
res = sched_setaffinity(0, sizeof(cpu_set_t), &cpuset);
res = sched_getaffinity(0, sizeof(cpu_set_t), &cpuset);
res = CPU_ISSET(1, &cpuset);
CPU_CLR(1, &cpuset);
],
sched_xetaffinity=yes,
sched_xetaffinity=no)
AC_MSG_RESULT([$sched_xetaffinity])
if test $sched_xetaffinity = yes; then
AC_DEFINE(HAVE_SCHED_xETAFFINITY, 1, [Define if you have sched_getaffinity/sched_setaffinity])
fi
AC_MSG_CHECKING([for pset functionality])
AC_TRY_LINK([#include <sys/pset.h>],
[
int res;
psetid_t id = PS_MYID;
int type = PS_PRIVATE;
uint_t numcpus = 1024;
processorid_t cpulist[1024];
res = pset_info(id, &type, &numcpus, &cpulist[0]);
],
pset_functionality=yes,
pset_functionality=no)
AC_MSG_RESULT([$pset_functionality])
if test $pset_functionality = yes; then
AC_DEFINE(HAVE_PSET, 1, [Define if you have pset functionality])
fi
AC_MSG_CHECKING([for processor_bind functionality])
AC_TRY_LINK([
#include <sys/types.h>
#include <sys/processor.h>
#include <sys/procset.h>
],
[
int res = processor_bind(P_LWPID, P_MYID, PBIND_NONE, NULL);
],
processor_bind_functionality=yes,
processor_bind_functionality=no)
AC_MSG_RESULT([$processor_bind_functionality])
if test $processor_bind_functionality = yes; then
AC_DEFINE(HAVE_PROCESSOR_BIND, 1, [Define if you have processor_bind functionality])
fi
AC_MSG_CHECKING([for cpuset_getaffinity/cpuset_setaffinity])
AC_TRY_LINK([
#include <sys/param.h>
#include <sys/cpuset.h>
],
[
int res;
cpuset_t cpuset;
CPU_ZERO(&cpuset);
CPU_SET(1, &cpuset);
res = cpuset_setaffinity(CPU_LEVEL_WHICH, CPU_WHICH_PID, -1, sizeof(cpuset_t), &cpuset);
res = cpuset_getaffinity(CPU_LEVEL_WHICH, CPU_WHICH_PID, -1, sizeof(cpuset_t), &cpuset);
res = CPU_ISSET(1, &cpuset);
CPU_CLR(1, &cpuset);
],
cpuset_xetaffinity=yes,
cpuset_xetaffinity=no)
AC_MSG_RESULT([$cpuset_xetaffinity])
if test $cpuset_xetaffinity = yes; then
AC_DEFINE(HAVE_CPUSET_xETAFFINITY, 1, [Define if you have cpuset_getaffinity/cpuset_setaffinity])
fi
AC_CACHE_CHECK([for 'end' symbol],
erts_cv_have_end_symbol,
[AC_TRY_LINK([],
[extern char end; {char *x = &end; *x= 0;}],
erts_cv_have_end_symbol=yes,
erts_cv_have_end_symbol=no)])
if test $erts_cv_have_end_symbol = yes; then
AC_DEFINE(HAVE_END_SYMBOL, 1, [Define if you have the 'end' symbol])
fi
AC_CACHE_CHECK([for '_end' symbol],
erts_cv_have__end_symbol,
[AC_TRY_LINK([],
[extern char _end; {char *x = &_end; *x= 0;}],
erts_cv_have__end_symbol=yes,
erts_cv_have__end_symbol=no)])
if test $erts_cv_have__end_symbol = yes; then
AC_DEFINE(HAVE__END_SYMBOL, 1, [Define if you have the '_end' symbol])
fi
AC_CACHE_CHECK([if __after_morecore_hook can track malloc()s core memory use],
erts_cv___after_morecore_hook_can_track_malloc,
[AC_TRY_RUN([
#include <stdlib.h>
#ifdef HAVE_MALLOC_H
# include <malloc.h>
#endif
#if defined(HAVE_END_SYMBOL)
extern char end;
#elif defined(HAVE__END_SYMBOL)
extern char _end;
#endif
#ifdef ETHR_PTHREADS
# ifdef ETHR_HAVE_PTHREAD_H
# include <pthread.h>
# else
# ifdef ETHR_HAVE_MIT_PTHREAD_H
# include <pthread/mit/pthread.h>
# endif
# endif
# define N_THR 5
#else
# define N_THR 1
#endif
static char *heap_start = NULL;
static char *heap_end = NULL;
void update_heap_size(void)
{
heap_end = (char *) sbrk(0);
}
void init_hook(void)
{
#if defined(HAVE_END_SYMBOL)
heap_start = &end;
#elif defined(HAVE__END_SYMBOL)
heap_start = &_end;
#else
heap_start = sbrk(0);
#endif
__after_morecore_hook = update_heap_size;
}
void (*__malloc_initialize_hook) (void) = init_hook;
static int
check_malloc(int size)
{
char *p = (char *) malloc(size);
if (!heap_start || !heap_end) return 0;
if (!p) return 0;
if (p < heap_start || heap_end <= p) return 0;
if (p + size < heap_start || heap_end < p + size) return 0;
return 1;
}
#ifdef ETHR_PTHREADS
pthread_mutex_t mutex = PTHREAD_MUTEX_INITIALIZER;
#endif
static void *
do_tests(void *vresp)
{
int i, ok = 0;
#ifdef ETHR_PTHREADS
if (pthread_mutex_lock(&mutex) != 0)
return NULL;
#endif
for (i = 0; i < 10; i++)
if (!check_malloc(1000))
goto failed;
for (i = 0; i < 100; i++)
if (!check_malloc(1))
goto failed;
if (!check_malloc(1024*1024+1))
goto failed;
if (!check_malloc(10*1024*1024+1))
goto failed;
ok = 1;
failed:
#ifdef ETHR_PTHREADS
if (pthread_mutex_unlock(&mutex) != 0)
return NULL;
#endif
if (ok)
*((int *) vresp) = 0;
return NULL;
}
int main(void)
{
int res[N_THR], i;
#ifdef ETHR_PTHREADS
pthread_t tid[N_THR];
#endif
#if defined(HAVE_MALLOPT) && defined(M_MMAP_MAX)
(void) mallopt(M_MMAP_MAX, 0);
#endif
for (i = 0; i < N_THR; i++)
res[i] = 1;
#ifdef ETHR_PTHREADS
for (i = 1; i < N_THR; i++)
if (pthread_create(&tid[i], NULL, do_tests, &res[i]) != 0)
return 1;
#endif
(void) do_tests(&res[0]);
#ifdef ETHR_PTHREADS
for (i = 1; i < N_THR; i++)
if (pthread_join(tid[i], NULL) != 0)
return 1;
#endif
for (i = 0; i < N_THR; i++)
if (res[i])
return 1;
return 0;
}
],
erts_cv___after_morecore_hook_can_track_malloc=yes,
erts_cv___after_morecore_hook_can_track_malloc=no,
[
case X$erl_xcomp_after_morecore_hook in
X) erts_cv___after_morecore_hook_can_track_malloc=cross;;
Xyes|Xno) erts_cv___after_morecore_hook_can_track_malloc=$erl_xcomp_after_morecore_hook;;
*) AC_MSG_ERROR([Bad erl_xcomp_after_morecore_hook value: $erl_xcomp_after_morecore_hook]);;
esac
]
)])
case $erts_cv___after_morecore_hook_can_track_malloc in
yes) AC_DEFINE(ERTS___AFTER_MORECORE_HOOK_CAN_TRACK_MALLOC, 1, \
[Define if __after_morecore_hook can track malloc()s core memory use.]);;
cross) AC_MSG_WARN([result no guessed because of cross compilation]);;
*) ;;
esac
if test "x$ac_cv_func_sbrk" = "xyes"; then
AC_CACHE_CHECK([types of sbrk()s return value and argument],
erts_cv_sbrk_ret_arg_types,
[
erts_cv_sbrk_ret_arg_types=unknown
ret_types="void *,char *"
arg_types="intptr_t,ptrdiff_t,int,long"
save_ifs="$IFS"; IFS=","
for rtype in $ret_types; do
for atype in $arg_types; do
IFS=$save_ifs
AC_TRY_LINK([#include <sys/types.h>
#include <unistd.h>],
[$rtype sbrk($atype incr);],
[erts_cv_sbrk_ret_arg_types="$rtype,$atype"])
IFS=","
if test "$erts_cv_sbrk_ret_arg_types" != "unknown"; then
break 2
fi
done
done
IFS=$save_ifs])
if test "$erts_cv_sbrk_ret_arg_types" != "unknown"; then
save_ifs="$IFS"; IFS=","
read ret_type arg_type <<EOF
$erts_cv_sbrk_ret_arg_types
EOF
IFS=$save_ifs
AC_DEFINE_UNQUOTED(SBRK_RET_TYPE, $ret_type, \
[Define the sbrk() return type.])
AC_DEFINE_UNQUOTED(SBRK_ARG_TYPE, $arg_type, \
[Define the sbrk() argument type.])
fi
fi
if test $ac_cv_func_brk = yes; then
AC_CACHE_CHECK([types of brk()s return value and argument],
erts_cv_brk_ret_arg_types,
[
erts_cv_brk_ret_arg_types=unknown
ret_types="int,long,char *,void *"
arg_types="void *,const void *,char *,const char *"
save_ifs="$IFS"; IFS=","
for rtype in $ret_types; do
for atype in $arg_types; do
IFS=$save_ifs
AC_TRY_LINK([#include <sys/types.h>
#include <unistd.h>],
[$rtype brk($atype endds);],
[erts_cv_brk_ret_arg_types="$rtype,$atype"])
IFS=","
if test "$erts_cv_brk_ret_arg_types" != "unknown"; then
break 2
fi
done
done
IFS=$save_ifs])
if test "$erts_cv_brk_ret_arg_types" != "unknown"; then
save_ifs="$IFS"; IFS=","
read ret_type arg_type <<EOF
$erts_cv_brk_ret_arg_types
EOF
IFS=$save_ifs
AC_DEFINE_UNQUOTED(BRK_RET_TYPE, $ret_type, \
[Define the brk() return type.])
AC_DEFINE_UNQUOTED(BRK_ARG_TYPE, $arg_type, \
[Define the brk() argument type.])
fi
fi
if test $ac_cv_func_sbrk = yes; then
AC_CACHE_CHECK([if sbrk()/brk() wrappers can track malloc()s core memory use],
erts_cv_brk_wrappers_can_track_malloc,
[AC_TRY_RUN([
#include <stdlib.h>
#include <sys/types.h>
#include <unistd.h>
#ifdef HAVE_DLFCN_H
# include <dlfcn.h>
#endif
/*
* Our implementation requires that we have sbrk(), and 'end' or '_end'.
*/
#if !defined(HAVE_SBRK)
# error no sbrk()
#endif
#if defined(HAVE_END_SYMBOL)
extern char end;
#elif defined(HAVE__END_SYMBOL)
extern char _end;
#else
# error no 'end' nor '_end'
#endif
#ifdef ETHR_PTHREADS
# ifdef ETHR_HAVE_PTHREAD_H
# include <pthread.h>
# else
# ifdef ETHR_HAVE_MIT_PTHREAD_H
# include <pthread/mit/pthread.h>
# endif
# endif
# define N_THR 5
#else
# define N_THR 1
#endif
#define SBRK_IMPL(RET_TYPE, SBRK, ARG_TYPE) \
RET_TYPE SBRK (ARG_TYPE); \
static RET_TYPE (*real_ ## SBRK)(ARG_TYPE) = NULL; \
RET_TYPE \
SBRK (ARG_TYPE arg) \
{ \
RET_TYPE res; \
if (!real_ ## SBRK) real_ ## SBRK = dlsym(RTLD_NEXT, #SBRK); \
res = (*real_ ## SBRK)(arg); \
if (res != (RET_TYPE) -1) heap_end = (char *) (*real_ ## SBRK)(0); \
return res; \
}
#define BRK_IMPL(RET_TYPE, BRK, ARG_TYPE) \
RET_TYPE BRK (ARG_TYPE); \
static RET_TYPE (*real_ ## BRK)(ARG_TYPE) = NULL; \
RET_TYPE \
BRK (ARG_TYPE arg) \
{ \
RET_TYPE res; \
if (!real_ ## BRK) real_ ## BRK = dlsym(RTLD_NEXT, #BRK); \
res = (*real_ ## BRK)(arg); \
if (res != (RET_TYPE) -1) heap_end = (char *) arg; \
return res; \
}
static char *heap_start = NULL;
static char *heap_end = NULL;
SBRK_IMPL(SBRK_RET_TYPE, sbrk, SBRK_ARG_TYPE)
#ifdef HAVE_BRK
BRK_IMPL(BRK_RET_TYPE, brk, BRK_ARG_TYPE)
#endif
#ifdef HAVE__SBRK
SBRK_IMPL(SBRK_RET_TYPE, _sbrk, SBRK_ARG_TYPE)
#endif
#ifdef HAVE__BRK
BRK_IMPL(BRK_RET_TYPE, _brk, BRK_ARG_TYPE)
#endif
#ifdef HAVE___SBRK
SBRK_IMPL(SBRK_RET_TYPE, __sbrk, SBRK_ARG_TYPE)
#endif
#ifdef HAVE___BRK
BRK_IMPL(BRK_RET_TYPE, __brk, BRK_ARG_TYPE)
#endif
static int
check_malloc(int size)
{
char *p = (char *) malloc(size);
if (!heap_start || !heap_end) return 0;
if (!p) return 0;
if (p < heap_start || heap_end <= p) return 0;
if (p + size < heap_start || heap_end < p + size) return 0;
return 1;
}
#ifdef ETHR_PTHREADS
pthread_mutex_t mutex = PTHREAD_MUTEX_INITIALIZER;
#endif
static void *
do_tests(void *vresp)
{
int i, ok = 0;
#ifdef ETHR_PTHREADS
if (pthread_mutex_lock(&mutex) != 0)
return NULL;
#endif
for (i = 0; i < 10; i++)
if (!check_malloc(1000))
goto failed;
for (i = 0; i < 100; i++)
if (!check_malloc(1))
goto failed;
if (!check_malloc(1024*1024+1))
goto failed;
if (!check_malloc(10*1024*1024+1))
goto failed;
ok = 1;
failed:
#ifdef ETHR_PTHREADS
if (pthread_mutex_unlock(&mutex) != 0)
return NULL;
#endif
if (ok)
*((int *) vresp) = 0;
return NULL;
}
int main(void)
{
int res[N_THR], i;
#ifdef ETHR_PTHREADS
pthread_t tid[N_THR];
#endif
#if defined(HAVE_END_SYMBOL)
heap_start = &end;
#elif defined(HAVE__END_SYMBOL)
heap_start = &_end;
#endif
#if defined(HAVE_MALLOPT) && defined(M_MMAP_MAX)
(void) mallopt(M_MMAP_MAX, 0);
#endif
for (i = 0; i < N_THR; i++)
res[i] = 1;
#ifdef ETHR_PTHREADS
for (i = 1; i < N_THR; i++)
if (pthread_create(&tid[i], NULL, do_tests, &res[i]) != 0)
return 1;
#endif
(void) do_tests(&res[0]);
#ifdef ETHR_PTHREADS
for (i = 1; i < N_THR; i++)
if (pthread_join(tid[i], NULL) != 0)
return 1;
#endif
for (i = 0; i < N_THR; i++)
if (res[i])
return 1;
return 0;
}
],
erts_cv_brk_wrappers_can_track_malloc=yes,
erts_cv_brk_wrappers_can_track_malloc=no,
[
case X$erl_xcomp_dlsym_brk_wrappers in
X) erts_cv_brk_wrappers_can_track_malloc=cross;;
Xyes|Xno) erts_cv_brk_wrappers_can_track_malloc=$erl_xcomp_dlsym_brk_wrappers;;
*) AC_MSG_ERROR([Bad erl_xcomp_dlsym_brk_wrappers value: $erl_xcomp_dlsym_brk_wrappers]);;
esac
])])
case $erts_cv_brk_wrappers_can_track_malloc in
yes)
AC_DEFINE(ERTS_BRK_WRAPPERS_CAN_TRACK_MALLOC, 1, \
[Define if sbrk()/brk() wrappers can track malloc()s core memory use]);;
cross)
AC_MSG_WARN([result no guessed because of cross compilation]);;
*) ;;
esac
fi
dnl Restore LIBS
LIBS=$saved_libs
dnl restore CPPFLAGS
CPPFLAGS=$saved_cppflags
case $ARCH in
x86|amd64)
AC_DEFINE(ERTS_STRUCTURE_ALIGNED_ALLOC, 1, [Define if structure alignment is enough for allocators. If not defined, 64-bit alignment will be forced.]);;
*)
;;
esac
LM_SYS_IPV6
LM_SYS_MULTICAST
ERL_TIME_CORRECTION
AC_CHECK_PROG(M4, m4, m4)
if test X${enable_hipe} != Xno; then
dnl HiPE cannot run without mprotect()
if test X$ac_cv_func_mprotect != Xyes; then
if test X${enable_hipe} = Xyes; then
AC_MSG_ERROR([HiPE needs mprotect() on $ARCH])
else
enable_hipe=no
AC_MSG_WARN([Disable HiPE due to lack of mprotect()])
fi
fi
fi
dnl check to auto-enable hipe here...
if test "$cross_compiling" != "yes" && test X${enable_hipe} != Xno; then
if test -z "$M4"; then
enable_hipe=no
AC_MSG_NOTICE([HiPE disabled as no valid m4 is found in PATH])
else
case "$ARCH-$OPSYS" in
x86-linux|amd64-linux|x86-darwin*|amd64-darwin*|ppc-linux|ppc64-linux|ppc-darwin|arm-linux|amd64-freebsd|x86-freebsd|x86-sol2|amd64-sol2|ultrasparc-linux)
enable_hipe=yes
;;
esac
fi
fi
if test X${enable_hipe} = Xyes; then
case $OPSYS in
linux)
ppcBEAMLDFLAGS="-Wl,-m,elf32ppc"
ppc64BEAMLDFLAGS="-Wl,-m,elf64ppc,-T,hipe/elf64ppc.x"
;;
darwin)
amd64BEAMLDFLAGS="-pagezero_size 0x10000000"
;;
esac
archVarName="${ARCH}BEAMLDFLAGS"
eval HIPEBEAMLDFLAGS=\$$archVarName
fi
AC_SUBST(HIPEBEAMLDFLAGS)
dnl Permanently disable floating point exceptions.
dnl On x86/amd64, floating points exceptions have
dnl unresolved stability issues.
AC_MSG_CHECKING([for unreliable floating point exceptions])
FPE=unreliable
AC_SUBST(FPE)
AC_MSG_RESULT([unreliable])
AC_DEFINE(NO_FPE_SIGNALS,[],[Define if floating points exceptions are non-existing/not reliable])
dnl
dnl Some operating systems allow you to redefine FD_SETSIZE to be able
dnl to select on more than the default number of file descriptors.
dnl We first discovered this in BSD/OS where the default is ridiculously
dnl low (256). But since we use a lot of file descriptors we found the
dnl need to go over the limit in other os's as well. Since FD_SETSIZE
dnl must be defined before pulling in sys/types.h the actual number
dnl of file descriptors is set in acconfig.h and will thus be in config.h
dnl which *always* should be included first.
dnl
AC_MSG_CHECKING([whether to redefine FD_SETSIZE])
case $host_os in
bsdi*)
AC_DEFINE(REDEFINE_FD_SETSIZE,[],[Define if you wish to redefine FD_SETSIZE to be able to select on more fd])
AC_MSG_RESULT(yes)
;;
*)
AC_MSG_RESULT(no)
;;
esac
dnl ----------------------------------------------------------------------
dnl Tests related to configurable options given on command line
dnl (using the --disable, --enable and --with switches).
dnl ----------------------------------------------------------------------
#
# Check if we should enable HiPE.
#
HIPE_ENABLED=
HIPE_HELPERS=
dnl if not disabled, autoenable HiPE on known supported platforms
dnl done up where floating point is checked, need to descide there already...
if test X${enable_hipe} = Xyes; then
if test X$ac_cv_sizeof_void_p != X4 -a X$ARCH != Xamd64 -a X$ARCH != Xppc64; then
AC_MSG_WARN([HiPE is not supported in 64-bit builds])
else
HIPE_ENABLED=yes
AC_DEFINE(HIPE,[1],[Define to enable HiPE])
HIPE_HELPERS="xmerl syntax_tools edoc"
ENABLE_ALLOC_TYPE_VARS="$ENABLE_ALLOC_TYPE_VARS hipe"
AC_MSG_NOTICE([Enable exec_alloc for hipe code allocation])
ENABLE_ALLOC_TYPE_VARS="$ENABLE_ALLOC_TYPE_VARS exec_alloc"
fi
fi
AC_SUBST(HIPE_HELPERS)
AC_SUBST(HIPE_ENABLED)
#
# Check if Erlang libraries should be compiled to native code.
#
NATIVE_LIBS_ENABLED=
if test X${enable_native_libs} = Xyes -a X${HIPE_ENABLED} = Xyes; then
NATIVE_LIBS_ENABLED=yes
cat >> $ERL_TOP/erts/CONF_INFO <<EOF
WARNING: In OTP 22, HiPE (the native code compiler) is
not fully functional. The reasons for this are:
1. There are new BEAM instructions for binary
matching that the HiPE native code compiler does not
support.
2. The new optimizations in the Erlang compiler create
new combination of instructions that HiPE currently
does not handle correctly.
If erlc is invoked like so:
erlc +native some_file.erl
or like so:
erlc +native some_file.beam
and if any of the new binary matching instructions
are used, the compiler will issue a warning and
produce a BEAM file without native code.
EOF
fi
AC_SUBST(NATIVE_LIBS_ENABLED)
#
# Check for working poll().
#
AC_MSG_CHECKING([for working poll()])
if test "x$ac_cv_header_poll_h" != "xyes" -o "x$ac_cv_func_poll" != "xyes"; then
poll_works=no
else
AC_TRY_RUN([
#include <poll.h>
main()
{
#ifdef _POLL_EMUL_H_
exit(1); /* Implemented using select() -- fail */
#else
struct pollfd fds[1];
int fd;
fd = open("/dev/null", 1);
fds[0].fd = fd;
fds[0].events = POLLIN;
fds[0].revents = 0;
if (poll(fds, 1, 0) < 0 || (fds[0].revents & POLLNVAL) != 0) {
exit(1); /* Does not work for devices -- fail */
}
exit(0);
#endif
}
],
poll_works=yes,
poll_works=no,
[
case X$erl_xcomp_poll in
X) poll_works=cross;;
Xyes|Xno) poll_works=$erl_xcomp_poll;;
*) AC_MSG_ERROR([Bad erl_xcomp_poll value: $erl_xcomp_poll]);;
esac
])
fi
case $poll_works-$host_os in
no-*|cross-darwin*)
#
# The USE_SELECT define is used by the ssl application (should not
# be used by erts).
#
AC_DEFINE(USE_SELECT, 1, [Define if select() should be used instead of poll()])
if test $poll_works = cross; then
AC_MSG_RESULT(cross)
AC_MSG_WARN([result no guessed based on OS ($host_os) because of cross compilation])
else
AC_MSG_RESULT([no; non-existing, broken, or based on select()])
fi
poll_works=no;;
yes-*|cross-*)
AC_DEFINE(ERTS_USE_POLL, 1, [Define if poll() should be used instead of select()])
if test $poll_works = cross; then
AC_MSG_RESULT(cross)
AC_MSG_WARN([result yes guessed based on OS ($host_os) because of cross compilation])
else
AC_MSG_RESULT(yes)
fi
poll_works=yes;;
esac
#
# If kqueue() found
#
if test $have_kernel_poll = kqueue; then
## Some OS X kernel version seems to have bugs in them with regards to kqueue
## Disable kernel poll on those versions
AC_MSG_CHECKING([whether host os has known kqueue bugs])
case $host_os in
# Any OS X version < 16 has known problems with using kqueue
# so we don't use it there. See erl_poll.c for details.
darwin[[0-9]].*|darwin1[[0-5]].*)
AC_MSG_RESULT([yes, disabling kernel poll])
have_kernel_poll=no
;;
*)
AC_MSG_RESULT([no])
;;
esac
fi
#
# If epoll() found, check that it is level triggered.
#
if test $have_kernel_poll = epoll; then
AC_MSG_CHECKING([whether epoll is level triggered])
AC_TRY_LINK([#include <sys/epoll.h>],[
#ifdef EPOLLET
/* Edge triggered option exist, assume level triggered
is default */
;
#else
/* No edge triggered option exist; assume edge
triggered only */
#error No EPOLLET
#endif
],
level_triggered_epoll=yes,
[level_triggered_epoll=no
have_kernel_poll=no])
AC_MSG_RESULT([$level_triggered_epoll])
fi
#
# Check if we should enable kernel poll support
#
AC_MSG_CHECKING(whether kernel poll support should be enabled)
ERTS_ENABLE_KERNEL_POLL=no
ERTS_BUILD_FALLBACK_POLL=no
case $enable_kernel_poll-$have_kernel_poll in
no-*)
AC_MSG_RESULT(no; disabled by user);;
yes-no)
AC_MSG_ERROR(no; kernel poll support requested but not found);;
*-no)
AC_MSG_RESULT(no);;
*)
case $have_kernel_poll in
epoll)
AC_DEFINE(HAVE_SYS_EPOLL_H, 1, [Define if you have the <sys/epoll.h> header file.])
ERTS_BUILD_FALLBACK_POLL=yes
;;
/dev/poll)
AC_DEFINE(HAVE_SYS_DEVPOLL_H, 1, [Define if you have <sys/devpoll.h> header file.])
;;
kqueue)
AC_DEFINE(HAVE_SYS_EVENT_H, 1, [Define if you have <sys/event.h> header file.])
ERTS_BUILD_FALLBACK_POLL=yes
;;
*)
AC_MSG_ERROR(configure.in need to be updated);;
esac
ERTS_ENABLE_KERNEL_POLL=yes
AC_DEFINE(ERTS_ENABLE_KERNEL_POLL, 1, [Define if you have kernel poll and want to use it])
AC_MSG_RESULT([yes; $have_kernel_poll]);;
esac
AC_SUBST(ERTS_BUILD_FALLBACK_POLL)
AC_MSG_CHECKING([whether putenv() stores a copy of the key-value pair])
AC_TRY_RUN([
#include <stdlib.h>
int main(void) {
int i;
char *env;
char buf[10];
for (i = 0; i < 7; i++)
buf[i] = 'X';
buf[i] = '\0';
buf[3] = '=';
if (putenv(buf) != 0)
return 1;
for (i = 4; i < 7; i++)
buf[i] = 'Y';
env = getenv("XXX");
if (!env)
return 2;
for (i = 0; i < 3; i++)
if (env[i] != 'X')
return 3;
for (i = 0; i < 3; i++)
buf[i] = 'Y';
env = getenv("XXX");
if (!env)
return 4;
for (i = 0; i < 3; i++)
if (env[i] != 'X')
return 5;
return 0;
}
],
copying_putenv=yes,
copying_putenv=no,
[
case X$erl_xcomp_putenv_copy in
X) copying_putenv=cross;;
Xyes|Xno) copying_putenv=$erl_xcomp_putenv_copy;;
*) AC_MSG_ERROR([Bad erl_xcomp_putenv_copy value: $erl_xcomp_putenv_copy]);;
esac
])
AC_MSG_RESULT($copying_putenv)
case $copying_putenv in
yes)
AC_DEFINE(HAVE_COPYING_PUTENV,[1],\
[Define if you have a putenv() that stores a copy of the key-value pair]);;
cross)
AC_MSG_WARN([result no guessed because of cross compilation]);;
*) ;;
esac
dnl ----------------------------------------------------------------------
dnl Stuff that should be moved into their respective application
dnl ----------------------------------------------------------------------
dnl
dnl We should look for a compiler that handles jump tables, for beam_emu
dnl to be optimized
dnl
LM_FIND_EMU_CC
dnl
dnl Test whether code pointers are always short (32 bits).
dnl
AC_MSG_CHECKING([whether the code model is small])
saved_LDFLAGS="$LDFLAGS"
LDFLAGS="$LDFLAGS $HIPEBEAMLDFLAGS"
AC_TRY_RUN([
#include <stdlib.h>
int main() {
if ((unsigned long long)&main < (1ull << 32)) {
exit(0);
}
exit(1);
}
],
erl_code_model_small=yes,
erl_code_model_small=no,
[case X$erl_xcomp_code_model_small in
X) erl_code_model_small=no;;
Xyes|Xno) erl_code_model_small=$erl_xcomp_code_model_small;;
*) AC_MSG_ERROR([Bad erl_xcomp_code_model_small value: $erl_xcomp_code_model_small]);;
esac])
AC_MSG_RESULT([$erl_code_model_small])
LDFLAGS="$saved_LDFLAGS"
case $erl_code_model_small in
yes)
AC_DEFINE(CODE_MODEL_SMALL,[1],
[Define if the code model is small (code fits below 2Gb)])
CODE_MODEL=small
;;
no)
CODE_MODEL=unknown
;;
esac
AC_SUBST(CODE_MODEL)
dnl
dnl DTrace & LTTNG
dnl
case $DYNAMIC_TRACE_FRAMEWORK in
dtrace|systemtap)
AC_CHECK_TOOL(DTRACE, dtrace, none)
test "$DTRACE" = "none" && AC_MSG_ERROR([No dtrace utility found.]);
enable_lttng_test=no
enable_dtrace_test=yes;;
lttng)
enable_lttng_test=yes
enable_dtrace_test=no;;
*)
enable_lttng_test=no
enable_dtrace_test=no;;
esac
AC_SUBST(DTRACE)
AC_SUBST(DTRACE_CPP)
AC_SUBST(DTRACE_ENABLED)
AC_SUBST(DTRACE_ENABLED_2STEP)
DTRACE_CPP=-C
DTRACE_ENABLED=
DTRACE_ENABLED_2STEP=
DTRACE_2STEP_TEST=./dtrace-test.o
DTRACE_BITS_FLAG=
case $OPSYS in
freebsd)
if test "$BITS64" = "yes" ; then
DTRACE_BITS_FLAG=-64
else
DTRACE_BITS_FLAG=-32
fi
;;
*)
: # Nothing to do
;;
esac
if test "$enable_dtrace_test" = "yes" ; then
if test "$DTRACE" = "dtrace" ; then
AC_CHECK_HEADERS(sys/sdt.h)
AC_MSG_CHECKING([for 1-stage DTrace precompilation])
# The OS X version of dtrace prints a spurious line here.
if ! dtrace -h $DTRACE_CPP -Iemulator/beam -o ./foo-dtrace.h -s emulator/beam/erlang_dtrace.d; then
AC_MSG_ERROR([Could not precompile erlang_dtrace.d: dtrace -h failed])
fi
AC_MSG_RESULT([yes])
AC_MSG_CHECKING([for 2-stage DTrace precompilation])
AC_TRY_COMPILE([ #include "foo-dtrace.h" ],
[ERLANG_DIST_PORT_BUSY_ENABLED();],
[rm -f $DTRACE_2STEP_TEST
dtrace -G $DTRACE_CPP $DTRACE_BITS_FLAG -Iemulator/beam -o $DTRACE_2STEP_TEST -s emulator/beam/erlang_dtrace.d conftest.$OBJEXT 2>&AS_MESSAGE_LOG_FD
if test -f $DTRACE_2STEP_TEST; then
rm -f $DTRACE_2STEP_TEST
DTRACE_ENABLED_2STEP=yes
fi],
[])
rm -f foo-dtrace.h
AS_IF([test "x$DTRACE_ENABLED_2STEP" = "xyes"],
[AC_MSG_RESULT([yes])],
[AC_MSG_RESULT([no])])
DTRACE_ENABLED=yes
case $OPSYS in
linux)
: # No extra libs to add to LIBS
;;
freebsd)
LIBS="$LIBS -lelf"
;;
*)
LIBS="$LIBS -ldtrace"
;;
esac
else
AC_MSG_ERROR([Dtrace preprocessing test failed.])
fi
fi
if test "$enable_lttng_test" = "yes" ; then
AC_CHECK_HEADERS(lttng/tracepoint.h)
AC_CHECK_HEADERS(lttng/tracepoint-event.h)
dnl The macro tracepoint_enabled is not present in older lttng versions
dnl checking for tracepoint_enabled
AC_MSG_CHECKING([for tracepoint_enabled in lttng/tracepoint.h])
AC_COMPILE_IFELSE(
[AC_LANG_PROGRAM(
[#include <lttng/tracepoint.h>
#define TRACEPOINT_PROVIDER org_erlang_otp
TRACEPOINT_EVENT(
org_erlang_otp,
dummy,
TP_ARGS(int, my_int),
TP_FIELDS(ctf_integer(int, my_int, my_int)))
#define TRACEPOINT_CREATE_PROBES
#define TRACEPOINT_DEFINE],
[if(tracepoint_enabled(org_erlang_otp,dummy)) do {} while(0)])],
[AC_MSG_RESULT([yes])],
[AC_MSG_ERROR([no (available in lttng-ust v2.7)])])
if test "x$ac_cv_header_lttng_tracepoint_h" = "xyes" \
-a "x$ac_cv_header_lttng_tracepoint_event_h" = "xyes"; then
# No straight forward way to test for liblttng-ust when no public symbol exists,
# just add the lib.
LIBS="$LIBS -llttng-ust -ldl"
else
AC_MSG_ERROR([No LTTng support found.])
fi
fi
#--------------------------------------------------------------------
# Os mon stuff.
#--------------------------------------------------------------------
AC_SUBST(os_mon_programs)
AC_SUBST(CPU_SUP_LIBS)
AC_CHECK_LIB(kstat, kstat_open, [
use_cpu_sup=yes
CPU_SUP_LIBS="$CPU_SUP_LIBS -lkstat"
])
AC_CHECK_LIB(kvm, kvm_open, [
use_cpu_sup=yes
CPU_SUP_LIBS="$CPU_SUP_LIBS -lkvm"
])
case $host_os in
solaris2*)
os_mon_programs="$os_mon_programs ferrule mod_syslog" ;;
darwin*)
use_cpu_sup=yes ;;
openbsd*)
use_cpu_sup=yes ;;
linux*)
use_cpu_sup=yes ;;
freebsd*)
use_cpu_sup=yes ;;
esac
if test "$use_cpu_sup" = "yes"; then
os_mon_programs="$os_mon_programs cpu_sup"
fi
AC_ARG_WITH(javac,
AS_HELP_STRING([--with-javac=JAVAC], [specify Java compiler to use])
AS_HELP_STRING([--with-javac], [use a Java compiler if found (default)])
AS_HELP_STRING([--without-javac], [don't use any Java compiler]))
dnl
dnl Then there are a number of apps which needs a java compiler...
dnl
need_java="jinterface ic/java_src"
# Remove all SKIP files from previous runs
for a in $need_java ; do
rm -f $ERL_TOP/lib/$a/SKIP
done
if test "X$with_javac" = "Xno"; then
for a in $need_java ; do
echo "Java compiler disabled by user" > $ERL_TOP/lib/$a/SKIP
done
else # begin - try to find javac
if test "X$with_javac" != "Xyes" -a "X$with_javac" != "X"; then
check_javac=$with_javac
else
check_javac="javac.sh javac guavac gcj jikes bock"
fi
AC_CHECK_PROGS(JAVAC, $check_javac)
if test -n "$JAVAC"; then
dnl Make sure it's at least JDK 1.6
AC_CACHE_CHECK(for JDK version 1.6,
ac_cv_prog_javac_ver_1_6,
[ERL_TRY_LINK_JAVA([], [for (String i : args);],
ac_cv_prog_javac_ver_1_6=yes, ac_cv_prog_javac_ver_1_6=no)])
if test $ac_cv_prog_javac_ver_1_6 = no; then
unset -v JAVAC
fi
fi
if test -z "$JAVAC"; then
if test "X$with_javac" != "X"; then
AC_MSG_ERROR([No java compiler found in PATH (checked for $check_javac)])
fi
AC_MSG_WARN([Could not find any usable java compiler, will skip: jinterface])
for a in $need_java ; do
echo "No Java compiler found" > $ERL_TOP/lib/$a/SKIP
done
fi
fi # end - try to find javac
dnl
dnl Orber has a c++ example, this isn't the right way to check for
dnl it, but....
dnl
AC_SUBST(CXXFLAGS)
dnl this deliberately does not believe that 'gcc' is a C++ compiler
AC_CHECK_TOOLS(CXX, [$CCC c++ g++ CC cxx cc++ cl], false)
# Remove SKIP file from previous run
rm -f $ERL_TOP/lib/orber/SKIP
if test "$CXX" = false; then
echo "No C++ compiler found" > $ERL_TOP/lib/orber/SKIP
fi
dnl ----------------------------------------------------------------------
dnl Include CPPFLAGS in CFLAGS
dnl ----------------------------------------------------------------------
CFLAGS="$CFLAGS $CPPFLAGS"
#
# Currently if we compile for 64 bits we want to compile
# some external port programs using 32 bits
#
# If not defined we trust the C compiler in $CC to do 32 bits
if test -z "$CC32"; then
CC32="$CC"
fi
if test -z "$CFLAGS32"; then
if test $ac_cv_sizeof_void_p != 4; then
# We are compiling default 64 bits and use -m32 for 32 bit compilations
CFLAGS32="$CFLAGS -m32"
else
CFLAGS32="$CFLAGS"
fi
fi
AC_SUBST(CC32)
AC_SUBST(CFLAGS32)
dnl
dnl ERTS_EMU_CMDLINE_FLAGS will force modification of config.h when
dnl the emulator command line flags are modified by configure, which
dnl in turn will make 'make' detect that files depending on config.h
dnl needs to be rebuilt.
dnl
AC_DEFINE_UNQUOTED(ERTS_EMU_CMDLINE_FLAGS,
"$STATIC_CFLAGS $CFLAGS $DEBUG_CFLAGS $EMU_THR_DEFS $DEFS $WERRORFLAGS $WFLAGS",
[The only reason ERTS_EMU_CMDLINE_FLAGS exists is to force modification of config.h when the emulator command line flags are modified by configure])
AC_SUBST(STATIC_CFLAGS)
dnl ----------------------------------------------------------------------
dnl Directories needed for the build
dnl ----------------------------------------------------------------------
erts=${erl_top}/erts
erts_dirs="
$erts/obj $erts/obj.debug
$erts/obj/$host
$erts/obj.debug/$host
"
for d in ${erl_top}/bin ${erl_top}/bin/$host $erts_dirs ;
do
if test ! -d $d; then
mkdir -p 1>/dev/null 2>&1 $d
fi
done
dnl ---------------------------------------------------------------------
dnl Autoheader macro for adding code at top and bottom of config.h.in
dnl ---------------------------------------------------------------------
AH_TOP([
#define GHBN_R_SOLARIS 2
#define GHBN_R_AIX 3
#define GHBN_R_GLIBC 4
])
AH_BOTTOM([
/* Redefine in6_addr. XXX this should be moved to the files where it's used? */
#ifdef HAVE_IN_ADDR6_STRUCT
#define in6_addr in_addr6
#endif
/* Define a reasonable default for INADDR_LOOPBACK */
/* XXX this should be moved to the files where it's used? */
#ifdef HAVE_NO_INADDR_LOOPBACK
#define INADDR_LOOPBACK (u_long)0x7F000001
#endif
#ifdef REDEFINE_FD_SETSIZE
#define FD_SETSIZE 1024
#endif
#ifdef HAVE_GETHRVTIME_PROCFS_IOCTL
#define HAVE_GETHRVTIME
#endif
#if !defined(HAVE_ISFINITE) && !defined(HAVE_FINITE)
# if defined(HAVE_ISINF) && defined(HAVE_ISNAN)
# define USE_ISINF_ISNAN
# endif
#endif
#if defined(DEBUG) && !defined(ERTS_ENABLE_LOCK_CHECK)
#define ERTS_ENABLE_LOCK_CHECK 1
#endif
])
if test "x$GCC" = xyes; then
CFLAGS="$WERRORFLAGS $CFLAGS"
fi
dnl ----------------------------------------------------------------------
dnl Enable -fsanitize= flags.
dnl ----------------------------------------------------------------------
m4_define(DEFAULT_SANITIZERS, [address,undefined])
AC_ARG_ENABLE(
sanitizers,
AS_HELP_STRING(
[--enable-sanitizers@<:@=comma-separated list of sanitizers@:>@],
[Default=DEFAULT_SANITIZERS]),
[
case "$enableval" in
no) sanitizers= ;;
yes) sanitizers="-fsanitize=DEFAULT_SANITIZERS" ;;
*) sanitizers="-fsanitize=$enableval" ;;
esac
CFLAGS="$CFLAGS $sanitizers"
LDFLAGS="$LDFLAGS $sanitizers"
])
dnl ----------------------------------------------------------------------
dnl Check for log2
dnl ----------------------------------------------------------------------
AC_CHECK_FUNCS([log2])
dnl ----------------------------------------------------------------------
dnl Output the result.
dnl ----------------------------------------------------------------------
dnl Note that the output files are relative to $srcdir
AC_CONFIG_FILES([
emulator/$host/Makefile:emulator/Makefile.in
epmd/src/$host/Makefile:epmd/src/Makefile.in
etc/common/$host/Makefile:etc/common/Makefile.in
include/internal/$host/ethread.mk:include/internal/ethread.mk.in
include/internal/$host/erts_internal.mk:include/internal/erts_internal.mk.in
lib_src/$host/Makefile:lib_src/Makefile.in
../make/$host/otp.mk:../make/otp.mk.in
])
AC_CONFIG_FILES([../make/make_emakefile:../make/make_emakefile.in],
[chmod +x ../make/make_emakefile])
dnl
dnl The ones below should be moved to their respective lib
dnl
AC_CONFIG_FILES([
../lib/os_mon/c_src/$host/Makefile:../lib/os_mon/c_src/Makefile.in
../lib/runtime_tools/c_src/$host/Makefile:../lib/runtime_tools/c_src/Makefile.in
../lib/tools/c_src/$host/Makefile:../lib/tools/c_src/Makefile.in
])
AC_CONFIG_FILES([../make/install_dir_data.sh:../make/install_dir_data.sh.in], [chmod +x ../make/install_dir_data.sh])
AC_OUTPUT
