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-rw-r--r--erts/configure.in634
1 files changed, 244 insertions, 390 deletions
diff --git a/erts/configure.in b/erts/configure.in
index cbebca97a3..b2435f1ac9 100644
--- a/erts/configure.in
+++ b/erts/configure.in
@@ -113,32 +113,14 @@ AS_HELP_STRING([--enable-bootstrap-only],
# 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...
- enable_threads=no
- enable_smp_support=no
with_termcap=no
with_ssl=no
with_ssl_zlib=no
enable_hipe=no
enable_sctp=no
- enable_dirty_schedulers=no
- fi
+ fi
])
-AC_ARG_ENABLE(threads,
-AS_HELP_STRING([--enable-threads], [enable async thread support])
-AS_HELP_STRING([--disable-threads], [disable async thread support]),
-[ case "$enableval" in
- no) enable_threads=no ;;
- *) enable_threads=yes ;;
- esac ], enable_threads=unknown)
-
-AC_ARG_ENABLE(dirty-schedulers,
-AS_HELP_STRING([--enable-dirty-schedulers], [enable dirty scheduler support]),
-[ case "$enableval" in
- no) enable_dirty_schedulers=no ;;
- *) enable_dirty_schedulers=yes ;;
- esac ], enable_dirty_schedulers=default)
-
AC_ARG_ENABLE(dirty-schedulers-test,
AS_HELP_STRING([--enable-dirty-schedulers-test], [enable dirty scheduler test (for debugging purposes)]),
[ case "$enableval" in
@@ -146,22 +128,6 @@ AS_HELP_STRING([--enable-dirty-schedulers-test], [enable dirty scheduler test (f
*) enable_dirty_schedulers_test=no ;;
esac ], enable_dirty_schedulers_test=no)
-AC_ARG_ENABLE(smp-support,
-AS_HELP_STRING([--enable-smp-support], [enable smp support])
-AS_HELP_STRING([--disable-smp-support], [disable smp support]),
-[ case "$enableval" in
- no) enable_smp_support=no ;;
- *) enable_smp_support=yes ;;
- esac ], enable_smp_support=unknown)
-
-AC_ARG_ENABLE(plain-emulator,
-AS_HELP_STRING([--enable-plain-emulator], [enable plain emulator])
-AS_HELP_STRING([--disable-plain-emulator], [disable plain emulator]),
-[ case "$enableval" in
- no) enable_plain_emulator=no ;;
- *) enable_plain_emulator=yes ;;
- esac ], enable_plain_emulator=unknown)
-
AC_ARG_ENABLE(smp-require-native-atomics,
AS_HELP_STRING([--disable-smp-require-native-atomics],
[disable the SMP requirement of a native atomic implementation]),
@@ -580,6 +546,90 @@ AC_SUBST(WFLAGS)
AC_SUBST(WERRORFLAGS)
AC_SUBST(CFLAG_RUNTIME_LIBRARY_PATH)
+## Check if we can do profile guided optimization of beam_emu
+LM_CHECK_ENABLE_CFLAG([-fprofile-generate -Werror],[PROFILE_GENERATE])
+LM_CHECK_ENABLE_CFLAG([-fprofile-use -Werror],[PROFILE_USE])
+
+## Check if this is clang
+LM_CHECK_ENABLE_CFLAG([-fprofile-instr-generate -Werror],[PROFILE_INSTR_GENERATE])
+if test "X$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";
+ $LLVM_PROFDATA merge -output=default.profdata *.profraw;
+ AC_MSG_CHECKING([whether gcc accepts -fprofile-instr-use=default.profdata -Werror])
+ AC_COMPILE_IFELSE([],
+ [AC_MSG_RESULT([yes])
+ PROFILE_INSTR_USE=true],
+ [AC_MSG_RESULT([no])
+ PROFILE_INSTR_USE=false])
+ rm -f default.profdata
+ fi],
+ [])
+ rm -f *.profraw
+ CFLAGS=$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)
+
+LM_CHECK_ENABLE_CFLAG([-fprofile-use -fprofile-correction -Werror],[PROFILE_CORRECTION])
+
+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 $enable_pgo = yes; then
+ AC_MSG_ERROR(cannot use PGO when cross-compiling)
+ else
+ AC_MSG_RESULT([no, cross compiling])
+ fi
+elif test "X$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 $enable_pgo = yes; then
+ AC_MSG_ERROR(cannot use PGO with this compiler)
+ else
+ AC_MSG_RESULT([no])
+ fi
+fi
+
+AC_SUBST(USE_PGO)
+AC_SUBST(PROFILE_COMPILER)
+
AC_CHECK_SIZEOF(void *) # Needed for ARCH and smp checks below
if test "x$ac_cv_sizeof_void_p" = x8; then
AC_SUBST(EXTERNAL_WORD_SIZE, 64)
@@ -640,6 +690,7 @@ case $chk_arch_ in
armv7l) ARCH=arm;;
armv7hl) ARCH=arm;;
tile) ARCH=tile;;
+ e2k) ARCH=e2k;;
*) ARCH=noarch;;
esac
@@ -996,81 +1047,12 @@ dnl are set by ERL_FIND_ETHR_LIB
ERL_FIND_ETHR_LIB
if test "X$ETHR_LIB_NAME" = "X"; then
- found_threads=no
-else
- found_threads=yes
+ AC_MSG_ERROR([cannot build emulator since no thread library was found])
fi
-FLAVORS=
TYPES=opt
-ERTS_BUILD_SMP_EMU=$enable_smp_support
-AC_MSG_CHECKING(whether an emulator with smp support should be built)
-case $ERTS_BUILD_SMP_EMU in
- yes)
- AC_MSG_RESULT(yes; enabled by user)
- ;;
- no)
- AC_MSG_RESULT(no; disabled by user)
- ;;
- unknown)
- AC_TRY_COMPILE([],[
- #if __GNUC__ >= 3 || (__GNUC__ == 2 && __GNUC_MINOR__ >= 95)
- ;
- #else
- #error old or no gcc
- #endif
- ],
- gcc_smp=okgcc,
- gcc_smp=oldornogcc)
- ERTS_BUILD_SMP_EMU=yes
- case "$enable_threads-$gcc_smp-$found_threads-$host_os" in
-
- no-*)
- AC_MSG_RESULT(no; threads disabled by user)
- ERTS_BUILD_SMP_EMU=no
- ;;
-
- *-okgcc-yes-*)
- AC_MSG_RESULT(yes)
- ERTS_BUILD_SMP_EMU=yes
- ;;
-
- *-win32)
- AC_MSG_RESULT(yes)
- ERTS_BUILD_SMP_EMU=yes
- ;;
-
- *-oldornogcc-*)
- AC_MSG_RESULT(no; old gcc or no gcc found)
- ERTS_BUILD_SMP_EMU=no
- ;;
-
- *)
- AC_MSG_RESULT(no)
- ERTS_BUILD_SMP_EMU=no
- ;;
- esac
- ;;
-esac
-
-AC_MSG_CHECKING(whether dirty schedulers should be enabled)
-case $ERTS_BUILD_SMP_EMU-$enable_dirty_schedulers in
- yes-yes)
- DIRTY_SCHEDULER_SUPPORT=yes;;
- yes-default)
- DIRTY_SCHEDULER_SUPPORT=yes;;
- no-default)
- DIRTY_SCHEDULER_SUPPORT=no;;
- no-yes)
- AC_MSG_ERROR([No smp emulator will be built, but dirty schedulers requested]);;
- *)
- DIRTY_SCHEDULER_SUPPORT=no;;
-esac
-AC_MSG_RESULT($DIRTY_SCHEDULER_SUPPORT)
-AC_SUBST(DIRTY_SCHEDULER_SUPPORT)
DIRTY_SCHEDULER_TEST=$enable_dirty_schedulers_test
-test $DIRTY_SCHEDULER_SUPPORT = yes || DIRTY_SCHEDULER_TEST=no
AC_SUBST(DIRTY_SCHEDULER_TEST)
test $DIRTY_SCHEDULER_TEST != yes || {
test -f "$ERL_TOP/erts/CONF_INFO" || echo "" > "$ERL_TOP/erts/CONF_INFO"
@@ -1085,26 +1067,15 @@ test $DIRTY_SCHEDULER_TEST != yes || {
EOF
}
-if test $ERTS_BUILD_SMP_EMU = yes; then
-
- DEFAULT_FLAVOR=smp
- FLAVORS="$FLAVORS smp"
-
- if test $found_threads = no; then
- AC_MSG_ERROR([cannot build smp enabled emulator since no thread library was found])
- fi
+test "X$smp_require_native_atomics" = "Xyes" &&
+ AC_DEFINE(ETHR_SMP_REQUIRE_NATIVE_IMPLS, 1, [Define if you want to enable check for native ethread implementations])
- AC_DEFINE(ERTS_HAVE_SMP_EMU, 1, [Define if the smp emulator is built])
-
- 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 >> $ERL_TOP/erts/CONF_INFO <<EOF
+case "$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
@@ -1121,18 +1092,18 @@ if test $ERTS_BUILD_SMP_EMU = yes; then
more information.
EOF
- fi
- ;;
+ fi
+ ;;
- no-yes-*)
- AC_MSG_ERROR([No native atomic implementation found. See the \"Atomic Memory Operations and the VM\" chapter of \$ERL_TOP/HOWTO/INSTALL.md for more information.])
- ;;
+ no-yes-*)
+ AC_MSG_ERROR([No native atomic implementation found. See the \"Atomic Memory Operations and the VM\" chapter of \$ERL_TOP/HOWTO/INSTALL.md for more information.])
+ ;;
- no-no-yes)
+ no-no-yes)
- test -f "$ERL_TOP/erts/CONF_INFO" ||
- echo "" > "$ERL_TOP/erts/CONF_INFO"
- cat >> $ERL_TOP/erts/CONF_INFO <<EOF
+ test -f "$ERL_TOP/erts/CONF_INFO" ||
+ echo "" > "$ERL_TOP/erts/CONF_INFO"
+ cat >> $ERL_TOP/erts/CONF_INFO <<EOF
No native atomic implementation available.
Fallbacks implemented using spinlocks will be
@@ -1141,13 +1112,12 @@ EOF
this.
EOF
- ;;
-
- no-no-no)
+ ;;
- test -f "$ERL_TOP/erts/CONF_INFO" ||
- echo "" > "$ERL_TOP/erts/CONF_INFO"
- cat >> "$ERL_TOP/erts/CONF_INFO" <<EOF
+ no-no-no)
+ test -f "$ERL_TOP/erts/CONF_INFO" ||
+ echo "" > "$ERL_TOP/erts/CONF_INFO"
+ cat >> "$ERL_TOP/erts/CONF_INFO" <<EOF
No native atomic implementation, nor no native
spinlock implementation available. Fallbacks
@@ -1156,76 +1126,11 @@ EOF
will suffer immensely due to this.
EOF
- ;;
-
- esac
-
- enable_threads=force
-fi
-
-AC_SUBST(ERTS_BUILD_SMP_EMU)
-
-ERTS_BUILD_PLAIN_EMU=$enable_plain_emulator
-AC_MSG_CHECKING(whether an emulator without smp support should be built)
-case $ERTS_BUILD_PLAIN_EMU in
- yes)
- AC_MSG_RESULT(yes; enabled by user)
- ;;
- no)
- AC_MSG_RESULT(no; disabled by user)
;;
- unknown)
- case "$enable_threads-$ERTS_BUILD_SMP_EMU" in
- no-*)
- ERTS_BUILD_PLAIN_EMU=yes
- AC_MSG_RESULT(yes)
- ;;
- *-no)
- ERTS_BUILD_PLAIN_EMU=yes
- AC_MSG_RESULT(yes; enabled as smp emulator was disabled)
- ;;
- *)
- ERTS_BUILD_PLAIN_EMU=no
- AC_MSG_RESULT(no)
- ;;
- esac
- ;;
-esac
-case $ERTS_BUILD_PLAIN_EMU in
- yes)
- AC_DEFINE(ERTS_HAVE_PLAIN_EMU, 1, [Define if the non-smp emulator is built])
- FLAVORS="$FLAVORS plain"
- test -f "$ERL_TOP/erts/CONF_INFO" || echo "" > "$ERL_TOP/erts/CONF_INFO"
- cat >> $ERL_TOP/erts/CONF_INFO <<EOF
-
- The PLAIN aka NON-SMP emulator has been enabled.
- This is a DEPRECATED feature scheduled for removal
- in a future major release.
-
-EOF
- ;;
- no)
- ;;
esac
-
-AC_SUBST(ERTS_BUILD_PLAIN_EMU)
-AC_SUBST(FLAVORS)
AC_SUBST(TYPES)
-case "$ERTS_BUILD_PLAIN_EMU-$ERTS_BUILD_SMP_EMU" in
- no-no)
- AC_MSG_ERROR([both smp and non-smp emulators have been disabled, one of them has to be enabled])
- ;;
- *-no)
- DEFAULT_FLAVOR=plain
- ;;
- *)
- ;;
-esac
-
-AC_SUBST(DEFAULT_FLAVOR)
-
AC_CHECK_FUNCS([posix_fadvise closefrom])
AC_CHECK_HEADERS([linux/falloc.h])
dnl * Old glibcs have broken fallocate64(). Make sure not to use it.
@@ -1285,121 +1190,65 @@ if test $i_cv_posix_fallocate_works = yes; then
fi
#
-# Figure out if the emulator should use threads. The default is set above
-# in the enable_threads variable. It can have the following values:
-#
-# no single-threaded emulator requested
-# yes multi-threaded emulator requested
-# force multi-threaded emulator required
-#
# EMU_THR_LIB_NAME, EMU_THR_LIBS, EMU_THR_X_LIBS, and EMU_THR_DEFS is
# used by the emulator, and can (but should not) be used by applications
# that only require thread support when the emulator has thread support.
# Other applications should use ETHR_LIB_NAME, ETHR_LIBS, ETHR_X_LIBS,
# and ETHR_DEFS.
#
-AC_MSG_CHECKING(whether the emulator should use threads)
EMU_THR_LIB_NAME=
EMU_THR_X_LIBS=
EMU_THR_LIBS=
EMU_THR_DEFS=
-emu_threads=no
-
-case "$enable_threads"-"$host_os" in
- *-win32)
- # The windows erlang emulator can never run without threads.
- # It has to be enabled or the emulator will crash. Until that
- # is fixed we force threads on win32.
- enable_threads=force ;;
- yes-osf*)
- # The emulator hang when threads are enabled on osf
- AC_MSG_ERROR(unresolved problems exist with threads on this platform) ;;
- *) ;;
-esac
-case "$enable_threads"-"$found_threads" in
- force-yes)
- emu_threads=yes
- AC_MSG_RESULT(yes; thread support required and therefore forced) ;;
- yes-yes)
- emu_threads=yes
- AC_MSG_RESULT(yes; enabled by user) ;;
- unknown-yes)
- case $host_os in
- solaris*|linux*|darwin*|win32)
- emu_threads=yes
- AC_MSG_RESULT(yes; default on this platform)
- ;;
- *)
- AC_MSG_RESULT(no; default on this platform)
- ;;
- esac
- ;;
- no-yes)
- AC_MSG_RESULT(no; thread support found but disabled by user) ;;
- unknown-no|no-no)
- AC_MSG_RESULT(no) ;;
- force-no)
- AC_MSG_ERROR(thread support required but not found) ;;
- yes-no)
- AC_MSG_ERROR(thread support enabled by user but not found) ;;
- *)
- AC_MSG_ERROR(internal error) ;;
-esac
+# Threads enabled for emulator
+EMU_THR_LIB_NAME=$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
-if test $emu_threads != yes; then
- enable_lock_check=no
- enable_lock_count=no
-else
- # Threads enabled for emulator
- EMU_THR_LIB_NAME=$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
- 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"
+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
- 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
-fi
+# 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)
@@ -1911,6 +1760,25 @@ if test $ac_cv_sizeof_void_p = 8; then
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([],[
@@ -1930,8 +1798,6 @@ else
AC_MSG_RESULT(no)
fi
-
-
AC_MSG_CHECKING([for broken gcc-4.3.0 compiler])
AC_TRY_RUN([
/* pr36339.c */
@@ -2455,9 +2321,6 @@ extern char end;
#elif defined(HAVE__END_SYMBOL)
extern char _end;
#endif
-#ifndef USE_THREADS
-#undef ETHR_PTHREADS
-#endif
#ifdef ETHR_PTHREADS
# ifdef ETHR_HAVE_PTHREAD_H
@@ -2691,10 +2554,6 @@ extern char _end;
# error no 'end' nor '_end'
#endif
-#ifndef USE_THREADS
-#undef ETHR_PTHREADS
-#endif
-
#ifdef ETHR_PTHREADS
# ifdef ETHR_HAVE_PTHREAD_H
# include <pthread.h>
@@ -2907,23 +2766,20 @@ if test "$cross_compiling" != "yes" && test X${enable_hipe} != Xno; then
fi
fi
-dnl Check to disable -fPIE and friends for HiPE on amd64
-if test X${enable_hipe} = Xyes && test X$ARCH = Xamd64; then
- AC_TRY_COMPILE(, [#if defined(__pie__) || defined(__PIE__)
- #error -fPIE is enabled by default
- #endif],
- [AC_MSG_NOTICE([No -fPIE enabled by default])],
- [AC_MSG_WARN([Security feature -fPIE will be disabled for HiPE])
- STATIC_CFLAGS="-fno-PIE $STATIC_CFLAGS"
- saved_LDFLAGS=$LDFLAGS
- LDFLAGS="-no-pie $LDFLAGS"
- AC_TRY_LINK(,, [],
- [LDFLAGS="-fno-PIE $saved_LDFLAGS"
- AC_TRY_LINK(,, [],
- [AC_MSG_WARN([Linked does not accept option -no-pie nor -fno-PIE])
- LDFLAGS=$saved_LDFLAGS])])])
+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)
if test X${enable_fp_exceptions} = Xauto ; then
case $host_os in
@@ -3487,10 +3343,7 @@ esac
fi
fi
-
-
-
-
+AC_SUBST(FPE)
dnl
@@ -3624,62 +3477,24 @@ case $poll_works-$host_os in
esac
#
-# If kqueue() found, check that it can be selected or polled on...
+# If kqueue() found
#
if test $have_kernel_poll = kqueue; then
- if test $poll_works = yes; then
- kqueue_with=poll
- else
- kqueue_with=select
- fi
- AC_MSG_CHECKING([whether kqueue() fd can be ${kqueue_with}()ed on])
- AC_TRY_RUN([
-#include <stdlib.h>
-#include <sys/types.h>
-#include <sys/event.h>
-#include <sys/time.h>
-#ifdef ERTS_USE_POLL
-#include <poll.h>
-#else
-#include <unistd.h>
-#endif
-int main(void) {
- int kq = kqueue();
- if (kq < 0) return 2;
- {
-#ifdef ERTS_USE_POLL
- struct pollfd pfds = {kq, POLLIN, 0};
- if (poll(&pfds, 1, 0) < 0) return 1;
-#else
- struct timeval tv = {0, 0};
- fd_set set; FD_ZERO(&set); FD_SET(kq, &set);
- if (select(kq+1, &set, NULL, NULL, &tv) < 0) return 1;
-#endif
- }
- return 0;
-}
- ],
- ok_kqueue=yes,
- ok_kqueue=no,
- [
- case X$erl_xcomp_kqueue in
- X) ok_kqueue=cross;;
- Xyes|Xno) ok_kqueue=$erl_xcomp_kqueue;;
- *) AC_MSG_ERROR([Bad erl_xcomp_kqueue value: $erl_xcomp_kqueue]);;
- esac
- ])
- AC_MSG_RESULT($ok_kqueue);
- case $ok_kqueue in
- yes)
- ;;
- cross)
- have_kernel_poll=no
- AC_MSG_WARN([result no guessed because of cross compilation]);;
- *)
- have_kernel_poll=no;;
- esac
+## 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.
#
@@ -3706,6 +3521,7 @@ fi
#
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);;
@@ -3716,11 +3532,16 @@ case $enable_kernel_poll-$have_kernel_poll in
*)
case $have_kernel_poll in
epoll)
- AC_DEFINE(HAVE_SYS_EPOLL_H, 1, [Define if you have the <sys/epoll.h> header file.]);;
+ 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.]);;
+ 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.]);;
+ 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
@@ -3728,7 +3549,7 @@ case $enable_kernel_poll-$have_kernel_poll in
AC_DEFINE(ERTS_ENABLE_KERNEL_POLL, 1, [Define if you have kernel poll and want to use it])
AC_MSG_RESULT([yes; $have_kernel_poll]);;
esac
-AC_SUBST(ERTS_ENABLE_KERNEL_POLL)
+AC_SUBST(ERTS_BUILD_FALLBACK_POLL)
AC_MSG_CHECKING([whether putenv() stores a copy of the key-value pair])
AC_TRY_RUN([
@@ -3953,6 +3774,39 @@ dnl
LM_FIND_EMU_CC
dnl
+dnl Test whether code pointers are always short (32 bits).
+dnl
+
+AC_MSG_CHECKING([whether the code model is small])
+saved_LDFLAGS="$LDFLAGS"
+LDFLAGS="$LDFLAGS $HIPEBEAMLDFLAGS"
+AC_TRY_RUN([
+ #include <stdlib.h>
+ int main() {
+ if ((unsigned long long)&main < (1ull << 32)) {
+ exit(0);
+ }
+ exit(1);
+ }
+],
+erl_code_model_small=yes,
+erl_code_model_small=no,
+erl_code_model_small=no)
+AC_MSG_RESULT([$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
@@ -4986,7 +4840,7 @@ AH_BOTTOM([
# endif
#endif
-#if defined(DEBUG) && defined(USE_THREADS) && !defined(ERTS_ENABLE_LOCK_CHECK)
+#if defined(DEBUG) && !defined(ERTS_ENABLE_LOCK_CHECK)
#define ERTS_ENABLE_LOCK_CHECK 1
#endif
])