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-dnl
-dnl %CopyrightBegin%
-dnl
-dnl Copyright Ericsson AB 1998-2013. All Rights Reserved.
-dnl
-dnl The contents of this file are subject to the Erlang Public License,
-dnl Version 1.1, (the "License"); you may not use this file except in
-dnl compliance with the License. You should have received a copy of the
-dnl Erlang Public License along with this software. If not, it can be
-dnl retrieved online at http://www.erlang.org/.
-dnl
-dnl Software distributed under the License is distributed on an "AS IS"
-dnl basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See
-dnl the License for the specific language governing rights and limitations
-dnl under the License.
-dnl
-dnl %CopyrightEnd%
-dnl
-
-dnl
-dnl aclocal.m4
-dnl
-dnl Local macros used in configure.in. The Local Macros which
-dnl could/should be part of autoconf are prefixed LM_, macros specific
-dnl to the Erlang system are prefixed ERL_.
-dnl
-
-AC_DEFUN(LM_PRECIOUS_VARS,
-[
-
-dnl ERL_TOP
-AC_ARG_VAR(ERL_TOP, [Erlang/OTP top source directory])
-
-dnl Tools
-AC_ARG_VAR(CC, [C compiler])
-AC_ARG_VAR(CFLAGS, [C compiler flags])
-AC_ARG_VAR(STATIC_CFLAGS, [C compiler static flags])
-AC_ARG_VAR(CFLAG_RUNTIME_LIBRARY_PATH, [runtime library path linker flag passed via C compiler])
-AC_ARG_VAR(CPP, [C/C++ preprocessor])
-AC_ARG_VAR(CPPFLAGS, [C/C++ preprocessor flags])
-AC_ARG_VAR(CXX, [C++ compiler])
-AC_ARG_VAR(CXXFLAGS, [C++ compiler flags])
-AC_ARG_VAR(LD, [linker (is often overridden by configure)])
-AC_ARG_VAR(LDFLAGS, [linker flags (can be risky to set since LD may be overriden by configure)])
-AC_ARG_VAR(LIBS, [libraries])
-AC_ARG_VAR(DED_LD, [linker for Dynamic Erlang Drivers (set all DED_LD* variables or none)])
-AC_ARG_VAR(DED_LDFLAGS, [linker flags for Dynamic Erlang Drivers (set all DED_LD* variables or none)])
-AC_ARG_VAR(DED_LD_FLAG_RUNTIME_LIBRARY_PATH, [runtime library path linker flag for Dynamic Erlang Drivers (set all DED_LD* variables or none)])
-AC_ARG_VAR(LFS_CFLAGS, [large file support C compiler flags (set all LFS_* variables or none)])
-AC_ARG_VAR(LFS_LDFLAGS, [large file support linker flags (set all LFS_* variables or none)])
-AC_ARG_VAR(LFS_LIBS, [large file support libraries (set all LFS_* variables or none)])
-AC_ARG_VAR(RANLIB, [ranlib])
-AC_ARG_VAR(AR, [ar])
-AC_ARG_VAR(GETCONF, [getconf])
-
-dnl Cross system root
-AC_ARG_VAR(erl_xcomp_sysroot, [Absolute cross system root path (only used when cross compiling)])
-AC_ARG_VAR(erl_xcomp_isysroot, [Absolute cross system root include path (only used when cross compiling)])
-
-dnl Cross compilation variables
-AC_ARG_VAR(erl_xcomp_bigendian, [big endian system: yes|no (only used when cross compiling)])
-AC_ARG_VAR(erl_xcomp_double_middle_endian, [double-middle-endian system: yes|no (only used when cross compiling)])
-AC_ARG_VAR(erl_xcomp_linux_clock_gettime_correction, [clock_gettime() can be used for time correction: yes|no (only used when cross compiling)])
-AC_ARG_VAR(erl_xcomp_linux_nptl, [have Native POSIX Thread Library: yes|no (only used when cross compiling)])
-AC_ARG_VAR(erl_xcomp_linux_usable_sigusrx, [SIGUSR1 and SIGUSR2 can be used: yes|no (only used when cross compiling)])
-AC_ARG_VAR(erl_xcomp_linux_usable_sigaltstack, [have working sigaltstack(): yes|no (only used when cross compiling)])
-AC_ARG_VAR(erl_xcomp_poll, [have working poll(): yes|no (only used when cross compiling)])
-AC_ARG_VAR(erl_xcomp_kqueue, [have working kqueue(): yes|no (only used when cross compiling)])
-AC_ARG_VAR(erl_xcomp_putenv_copy, [putenv() stores key-value copy: yes|no (only used when cross compiling)])
-AC_ARG_VAR(erl_xcomp_reliable_fpe, [have reliable floating point exceptions: yes|no (only used when cross compiling)])
-AC_ARG_VAR(erl_xcomp_getaddrinfo, [have working getaddrinfo() for both IPv4 and IPv6: yes|no (only used when cross compiling)])
-AC_ARG_VAR(erl_xcomp_gethrvtime_procfs_ioctl, [have working gethrvtime() which can be used with procfs ioctl(): yes|no (only used when cross compiling)])
-AC_ARG_VAR(erl_xcomp_clock_gettime_cpu_time, [clock_gettime() can be used for retrieving process CPU time: yes|no (only used when cross compiling)])
-AC_ARG_VAR(erl_xcomp_after_morecore_hook, [__after_morecore_hook can track malloc()s core memory usage: yes|no (only used when cross compiling)])
-AC_ARG_VAR(erl_xcomp_dlsym_brk_wrappers, [dlsym(RTLD_NEXT, _) brk wrappers can track malloc()s core memory usage: yes|no (only used when cross compiling)])
-
-dnl Cross compilation variables for OSE
-AC_ARG_VAR(erl_xcomp_ose_ldflags_pass1, [Linker flags for the OSE module (pass 1) (only used when cross compiling for OSE)])
-AC_ARG_VAR(erl_xcomp_ose_ldflags_pass2, [Linker flags for the OSE module (pass 2) (only used when cross compiling for OSE)])
-AC_ARG_VAR(erl_xcomp_ose_OSEROOT, [OSE installation root directory (only used when cross compiling for OSE)])
-AC_ARG_VAR(erl_xcomp_ose_STRIP, [Strip utility shipped with the OSE distribution(only used when cross compiling for OSE)])
-AC_ARG_VAR(erl_xcomp_ose_LM_POST_LINK, [OSE postlink tool (only used when cross compiling for OSE)])
-AC_ARG_VAR(erl_xcomp_ose_LM_SET_CONF, [Sets the configuration for an OSE load module (only used when cross compiling for OSE)])
-AC_ARG_VAR(erl_xcomp_ose_LM_ELF_SIZE, [Prints the section size information for an OSE load module (only used when cross compiling for OSE)])
-AC_ARG_VAR(erl_xcomp_ose_LM_LCF, [OSE load module linker configuration file (only used when cross compiling for OSE)])
-AC_ARG_VAR(erl_xcomp_ose_BEAM_LM_CONF, [BEAM OSE load module default configuration file (only used when cross compiling for OSE)])
-AC_ARG_VAR(erl_xcomp_ose_EPMD_LM_CONF, [EPMD OSE load module default configuration file (only used when cross compiling for OSE)])
-AC_ARG_VAR(erl_xcomp_ose_RUN_ERL_LM_CONF, [run_erl_lm OSE load module default configuration file (only used when cross compiling for OSE)])
-AC_ARG_VAR(erl_xcomp_ose_CONFD, [OSE confd source file])
-AC_ARG_VAR(erl_xcomp_ose_CRT0_LM, [OSE crt0 lm source file])
-
-])
-
-AC_DEFUN(ERL_XCOMP_SYSROOT_INIT,
-[
-erl_xcomp_without_sysroot=no
-if test "$cross_compiling" = "yes"; then
- test "$erl_xcomp_sysroot" != "" || erl_xcomp_without_sysroot=yes
- test "$erl_xcomp_isysroot" != "" || erl_xcomp_isysroot="$erl_xcomp_sysroot"
-else
- erl_xcomp_sysroot=
- erl_xcomp_isysroot=
-fi
-])
-
-AC_DEFUN(LM_CHECK_GETCONF,
-[
-if test "$cross_compiling" != "yes"; then
- AC_CHECK_PROG([GETCONF], [getconf], [getconf], [false])
-else
- dnl First check if we got a `<HOST>-getconf' in $PATH
- host_getconf="$host_alias-getconf"
- AC_CHECK_PROG([GETCONF], [$host_getconf], [$host_getconf], [false])
- if test "$GETCONF" = "false" && test "$erl_xcomp_sysroot" != ""; then
- dnl We should perhaps give up if we have'nt found it by now, but at
- dnl least in one Tilera MDE `getconf' under sysroot is a bourne
- dnl shell script which we can use. We try to find `<HOST>-getconf'
- dnl or `getconf' under sysconf, but only under sysconf since
- dnl `getconf' in $PATH is almost guaranteed to be for the build
- dnl machine.
- GETCONF=
- prfx="$erl_xcomp_sysroot"
- AC_PATH_TOOL([GETCONF], [getconf], [false],
- ["$prfx/usr/bin:$prfx/bin:$prfx/usr/local/bin"])
- fi
-fi
-])
-
-dnl ----------------------------------------------------------------------
-dnl
-dnl LM_WINDOWS_ENVIRONMENT
-dnl
-dnl
-dnl Tries to determine thw windows build environment, i.e.
-dnl MIXED_CYGWIN_VC or MIXED_MSYS_VC
-dnl
-
-AC_DEFUN(LM_WINDOWS_ENVIRONMENT,
-[
-MIXED_CYGWIN=no
-MIXED_MSYS=no
-
-AC_MSG_CHECKING(for mixed cygwin or msys and native VC++ environment)
-if test "X$host" = "Xwin32" -a "x$GCC" != "xyes"; then
- if test -x /usr/bin/cygpath; then
- CFLAGS="-O2"
- MIXED_CYGWIN=yes
- AC_MSG_RESULT([Cygwin and VC])
- MIXED_CYGWIN_VC=yes
- CPPFLAGS="$CPPFLAGS -DERTS_MIXED_CYGWIN_VC"
- elif test -x /usr/bin/msysinfo; then
- CFLAGS="-O2"
- MIXED_MSYS=yes
- AC_MSG_RESULT([MSYS and VC])
- MIXED_MSYS_VC=yes
- CPPFLAGS="$CPPFLAGS -DERTS_MIXED_MSYS_VC"
- else
- AC_MSG_RESULT([undeterminable])
- AC_MSG_ERROR(Seems to be mixed windows but not with cygwin, cannot handle this!)
- fi
-else
- AC_MSG_RESULT([no])
- MIXED_CYGWIN_VC=no
- MIXED_MSYS_VC=no
-fi
-AC_SUBST(MIXED_CYGWIN_VC)
-AC_SUBST(MIXED_MSYS_VC)
-
-MIXED_VC=no
-if test "x$MIXED_MSYS_VC" = "xyes" -o "x$MIXED_CYGWIN_VC" = "xyes" ; then
- MIXED_VC=yes
-fi
-
-AC_SUBST(MIXED_VC)
-
-if test "x$MIXED_MSYS" != "xyes"; then
- AC_MSG_CHECKING(for mixed cygwin and native MinGW environment)
- if test "X$host" = "Xwin32" -a "x$GCC" = x"yes"; then
- if test -x /usr/bin/cygpath; then
- CFLAGS="-O2"
- MIXED_CYGWIN=yes
- AC_MSG_RESULT([yes])
- MIXED_CYGWIN_MINGW=yes
- CPPFLAGS="$CPPFLAGS -DERTS_MIXED_CYGWIN_MINGW"
- else
- AC_MSG_RESULT([undeterminable])
- AC_MSG_ERROR(Seems to be mixed windows but not with cygwin, cannot handle this!)
- fi
- else
- AC_MSG_RESULT([no])
- MIXED_CYGWIN_MINGW=no
- fi
-else
- MIXED_CYGWIN_MINGW=no
-fi
-AC_SUBST(MIXED_CYGWIN_MINGW)
-
-AC_MSG_CHECKING(if we mix cygwin with any native compiler)
-if test "X$MIXED_CYGWIN" = "Xyes"; then
- AC_MSG_RESULT([yes])
-else
- AC_MSG_RESULT([no])
-fi
-
-AC_SUBST(MIXED_CYGWIN)
-
-AC_MSG_CHECKING(if we mix msys with another native compiler)
-if test "X$MIXED_MSYS" = "Xyes" ; then
- AC_MSG_RESULT([yes])
-else
- AC_MSG_RESULT([no])
-fi
-
-AC_SUBST(MIXED_MSYS)
-])
-
-dnl ----------------------------------------------------------------------
-dnl
-dnl LM_FIND_EMU_CC
-dnl
-dnl
-dnl Tries fairly hard to find a C compiler that can handle jump tables.
-dnl Defines the @EMU_CC@ variable for the makefiles and
-dnl inserts NO_JUMP_TABLE in the header if one cannot be found...
-dnl
-
-AC_DEFUN(LM_FIND_EMU_CC,
- [AC_CACHE_CHECK(for a compiler that handles jumptables,
- ac_cv_prog_emu_cc,
- [
-AC_TRY_COMPILE([],[
-#if defined(__clang_major__) && __clang_major__ >= 3
- /* clang 3.x or later is fine */
-#elif defined(__llvm__)
-#error "this version of llvm is unable to correctly compile beam_emu.c"
-#endif
- __label__ lbl1;
- __label__ lbl2;
- int x = magic();
- static void *jtab[2];
-
- jtab[0] = &&lbl1;
- jtab[1] = &&lbl2;
- goto *jtab[x];
-lbl1:
- return 1;
-lbl2:
- return 2;
-],ac_cv_prog_emu_cc=$CC,ac_cv_prog_emu_cc=no)
-
-if test $ac_cv_prog_emu_cc = no; then
- for ac_progname in emu_cc.sh gcc-4.2 gcc; do
- IFS="${IFS= }"; ac_save_ifs="$IFS"; IFS=":"
- ac_dummy="$PATH"
- for ac_dir in $ac_dummy; do
- test -z "$ac_dir" && ac_dir=.
- if test -f $ac_dir/$ac_progname; then
- ac_cv_prog_emu_cc=$ac_dir/$ac_progname
- break
- fi
- done
- IFS="$ac_save_ifs"
- if test $ac_cv_prog_emu_cc != no; then
- break
- fi
- done
-fi
-
-if test $ac_cv_prog_emu_cc != no; then
- save_CC=$CC
- save_CFLAGS=$CFLAGS
- save_CPPFLAGS=$CPPFLAGS
- CC=$ac_cv_prog_emu_cc
- CFLAGS=""
- CPPFLAGS=""
- AC_TRY_COMPILE([],[
-#if defined(__clang_major__) && __clang_major__ >= 3
- /* clang 3.x or later is fine */
-#elif defined(__llvm__)
-#error "this version of llvm is unable to correctly compile beam_emu.c"
-#endif
- __label__ lbl1;
- __label__ lbl2;
- int x = magic();
- static void *jtab[2];
-
- jtab[0] = &&lbl1;
- jtab[1] = &&lbl2;
- goto *jtab[x];
- lbl1:
- return 1;
- lbl2:
- return 2;
- ],ac_cv_prog_emu_cc=$CC,ac_cv_prog_emu_cc=no)
- CC=$save_CC
- CFLAGS=$save_CFLAGS
- CPPFLAGS=$save_CPPFLAGS
-fi
-])
-if test $ac_cv_prog_emu_cc = no; then
- AC_DEFINE(NO_JUMP_TABLE,[],[Defined if no found C compiler can handle jump tables])
- EMU_CC=$CC
-else
- EMU_CC=$ac_cv_prog_emu_cc
-fi
-AC_SUBST(EMU_CC)
-])
-
-
-
-dnl ----------------------------------------------------------------------
-dnl
-dnl LM_PROG_INSTALL_DIR
-dnl
-dnl This macro may be used by any OTP application.
-dnl
-dnl Figure out how to create directories with parents.
-dnl (In my opinion INSTALL_DIR is a bad name, MKSUBDIRS or something is better)
-dnl
-dnl We prefer 'install -d', but use 'mkdir -p' if it exists.
-dnl If none of these methods works, we give up.
-dnl
-
-
-AC_DEFUN(LM_PROG_INSTALL_DIR,
-[AC_CACHE_CHECK(how to create a directory including parents,
-ac_cv_prog_mkdir_p,
-[
-temp_name_base=config.$$
-temp_name=$temp_name_base/x/y/z
-$INSTALL -d $temp_name >/dev/null 2>&1
-ac_cv_prog_mkdir_p=none
-if test -d $temp_name; then
- ac_cv_prog_mkdir_p="$INSTALL -d"
-else
- mkdir -p $temp_name >/dev/null 2>&1
- if test -d $temp_name; then
- ac_cv_prog_mkdir_p="mkdir -p"
- fi
-fi
-rm -fr $temp_name_base
-])
-
-case "${ac_cv_prog_mkdir_p}" in
- none) AC_MSG_ERROR(don't know how create directories with parents) ;;
- *) INSTALL_DIR="$ac_cv_prog_mkdir_p" AC_SUBST(INSTALL_DIR) ;;
-esac
-])
-
-
-dnl ----------------------------------------------------------------------
-dnl
-dnl LM_PROG_PERL5
-dnl
-dnl Try to find perl version 5. If found set PERL to the absolute path
-dnl of the program, if not found set PERL to false.
-dnl
-dnl On some systems /usr/bin/perl is perl 4 and e.g.
-dnl /usr/local/bin/perl is perl 5. We try to handle this case by
-dnl putting a couple of
-dnl Tries to handle the case that there are two programs called perl
-dnl in the path and one of them is perl 5 and the other isn't.
-dnl
-AC_DEFUN(LM_PROG_PERL5,
-[AC_PATH_PROGS(PERL, perl5 perl, false,
- /usr/local/bin:/opt/local/bin:/usr/local/gnu/bin:${PATH})
-changequote(, )dnl
-dnl[ That bracket is needed to balance the right bracket below
-if test "$PERL" = "false" || $PERL -e 'exit ($] >= 5)'; then
-changequote([, ])dnl
- ac_cv_path_PERL=false
- PERL=false
-dnl AC_MSG_WARN(perl version 5 not found)
-fi
-])dnl
-
-
-dnl ----------------------------------------------------------------------
-dnl
-dnl LM_DECL_SO_BSDCOMPAT
-dnl
-dnl Check if the system has the SO_BSDCOMPAT flag on sockets (linux)
-dnl
-AC_DEFUN(LM_DECL_SO_BSDCOMPAT,
-[AC_CACHE_CHECK([for SO_BSDCOMPAT declaration], ac_cv_decl_so_bsdcompat,
-AC_TRY_COMPILE([#include <sys/socket.h>], [int i = SO_BSDCOMPAT;],
- ac_cv_decl_so_bsdcompat=yes,
- ac_cv_decl_so_bsdcompat=no))
-
-case "${ac_cv_decl_so_bsdcompat}" in
- "yes" ) AC_DEFINE(HAVE_SO_BSDCOMPAT,[],
- [Define if you have SO_BSDCOMPAT flag on sockets]) ;;
- * ) ;;
-esac
-])
-
-
-dnl ----------------------------------------------------------------------
-dnl
-dnl LM_DECL_INADDR_LOOPBACK
-dnl
-dnl Try to find declaration of INADDR_LOOPBACK, if nowhere provide a default
-dnl
-
-AC_DEFUN(LM_DECL_INADDR_LOOPBACK,
-[AC_CACHE_CHECK([for INADDR_LOOPBACK in netinet/in.h],
- ac_cv_decl_inaddr_loopback,
-[AC_TRY_COMPILE([#include <sys/types.h>
-#include <netinet/in.h>], [int i = INADDR_LOOPBACK;],
-ac_cv_decl_inaddr_loopback=yes, ac_cv_decl_inaddr_loopback=no)
-])
-
-if test ${ac_cv_decl_inaddr_loopback} = no; then
- AC_CACHE_CHECK([for INADDR_LOOPBACK in rpc/types.h],
- ac_cv_decl_inaddr_loopback_rpc,
- AC_TRY_COMPILE([#include <rpc/types.h>],
- [int i = INADDR_LOOPBACK;],
- ac_cv_decl_inaddr_loopback_rpc=yes,
- ac_cv_decl_inaddr_loopback_rpc=no))
-
- case "${ac_cv_decl_inaddr_loopback_rpc}" in
- "yes" )
- AC_DEFINE(DEF_INADDR_LOOPBACK_IN_RPC_TYPES_H,[],
- [Define if you need to include rpc/types.h to get INADDR_LOOPBACK defined]) ;;
- * )
- AC_CACHE_CHECK([for INADDR_LOOPBACK in winsock2.h],
- ac_cv_decl_inaddr_loopback_winsock2,
- AC_TRY_COMPILE([#define WIN32_LEAN_AND_MEAN
- #include <winsock2.h>],
- [int i = INADDR_LOOPBACK;],
- ac_cv_decl_inaddr_loopback_winsock2=yes,
- ac_cv_decl_inaddr_loopback_winsock2=no))
- case "${ac_cv_decl_inaddr_loopback_winsock2}" in
- "yes" )
- AC_DEFINE(DEF_INADDR_LOOPBACK_IN_WINSOCK2_H,[],
- [Define if you need to include winsock2.h to get INADDR_LOOPBACK defined]) ;;
- * )
- # couldn't find it anywhere
- AC_DEFINE(HAVE_NO_INADDR_LOOPBACK,[],
- [Define if you don't have a definition of INADDR_LOOPBACK]) ;;
- esac;;
- esac
-fi
-])
-
-
-dnl ----------------------------------------------------------------------
-dnl
-dnl LM_STRUCT_SOCKADDR_SA_LEN
-dnl
-dnl Check if the sockaddr structure has the field sa_len
-dnl
-
-AC_DEFUN(LM_STRUCT_SOCKADDR_SA_LEN,
-[AC_CACHE_CHECK([whether struct sockaddr has sa_len field],
- ac_cv_struct_sockaddr_sa_len,
-AC_TRY_COMPILE([#include <sys/types.h>
-#include <sys/socket.h>], [struct sockaddr s; s.sa_len = 10;],
- ac_cv_struct_sockaddr_sa_len=yes, ac_cv_struct_sockaddr_sa_len=no))
-
-dnl FIXME convbreak
-case ${ac_cv_struct_sockaddr_sa_len} in
- "no" ) AC_DEFINE(NO_SA_LEN,[1],[Define if you dont have salen]) ;;
- *) ;;
-esac
-])
-
-dnl ----------------------------------------------------------------------
-dnl
-dnl LM_STRUCT_EXCEPTION
-dnl
-dnl Check to see whether the system supports the matherr function
-dnl and its associated type "struct exception".
-dnl
-
-AC_DEFUN(LM_STRUCT_EXCEPTION,
-[AC_CACHE_CHECK([for struct exception (and matherr function)],
- ac_cv_struct_exception,
-AC_TRY_COMPILE([#include <math.h>],
- [struct exception x; x.type = DOMAIN; x.type = SING;],
- ac_cv_struct_exception=yes, ac_cv_struct_exception=no))
-
-case "${ac_cv_struct_exception}" in
- "yes" ) AC_DEFINE(USE_MATHERR,[1],[Define if you have matherr() function and struct exception type]) ;;
- * ) ;;
-esac
-])
-
-
-dnl ----------------------------------------------------------------------
-dnl
-dnl LM_SYS_IPV6
-dnl
-dnl Check for ipv6 support and what the in6_addr structure is called.
-dnl (early linux used in_addr6 insted of in6_addr)
-dnl
-
-AC_DEFUN(LM_SYS_IPV6,
-[AC_MSG_CHECKING(for IP version 6 support)
-AC_CACHE_VAL(ac_cv_sys_ipv6_support,
-[ok_so_far=yes
- AC_TRY_COMPILE([#include <sys/types.h>
-#ifdef __WIN32__
-#include <winsock2.h>
-#include <ws2tcpip.h>
-#elif __OSE__
-#error "no ipv6"
-#else
-#include <netinet/in.h>
-#endif],
- [struct in6_addr a6; struct sockaddr_in6 s6;], ok_so_far=yes, ok_so_far=no)
-
-if test $ok_so_far = yes; then
- ac_cv_sys_ipv6_support=yes
-else
- AC_TRY_COMPILE([#include <sys/types.h>
-#ifdef __WIN32__
-#include <winsock2.h>
-#include <ws2tcpip.h>
-#elif __OSE__
-#error "no ipv6"
-#else
-#include <netinet/in.h>
-#endif],
- [struct in_addr6 a6; struct sockaddr_in6 s6;],
- ac_cv_sys_ipv6_support=in_addr6, ac_cv_sys_ipv6_support=no)
-fi
-])dnl
-
-dnl
-dnl Have to use old style AC_DEFINE due to BC with old autoconf.
-dnl
-
-case ${ac_cv_sys_ipv6_support} in
- yes)
- AC_MSG_RESULT(yes)
- AC_DEFINE(HAVE_IN6,[1],[Define if ipv6 is present])
- ;;
- in_addr6)
- AC_MSG_RESULT([yes (but I am redefining in_addr6 to in6_addr)])
- AC_DEFINE(HAVE_IN6,[1],[Define if ipv6 is present])
- AC_DEFINE(HAVE_IN_ADDR6_STRUCT,[],[Early linux used in_addr6 instead of in6_addr, define if you have this])
- ;;
- *)
- AC_MSG_RESULT(no)
- ;;
-esac
-])
-
-
-dnl ----------------------------------------------------------------------
-dnl
-dnl LM_SYS_MULTICAST
-dnl
-dnl Check for multicast support. Only checks for multicast options in
-dnl setsockopt(), no check is performed that multicasting actually works.
-dnl If options are found defines HAVE_MULTICAST_SUPPORT
-dnl
-
-AC_DEFUN(LM_SYS_MULTICAST,
-[AC_CACHE_CHECK([for multicast support], ac_cv_sys_multicast_support,
-[AC_EGREP_CPP(yes,
-[#include <sys/types.h>
-#include <sys/socket.h>
-#include <netinet/in.h>
-#if defined(IP_MULTICAST_TTL) && defined(IP_MULTICAST_LOOP) && defined(IP_MULTICAST_IF) && defined(IP_ADD_MEMBERSHIP) && defined(IP_DROP_MEMBERSHIP)
-yes
-#endif
-], ac_cv_sys_multicast_support=yes, ac_cv_sys_multicast_support=no)])
-if test $ac_cv_sys_multicast_support = yes; then
- AC_DEFINE(HAVE_MULTICAST_SUPPORT,[1],
- [Define if setsockopt() accepts multicast options])
-fi
-])dnl
-
-
-dnl ----------------------------------------------------------------------
-dnl
-dnl LM_DECL_SYS_ERRLIST
-dnl
-dnl Define SYS_ERRLIST_DECLARED if the variable sys_errlist is declared
-dnl in a system header file, stdio.h or errno.h.
-dnl
-
-AC_DEFUN(LM_DECL_SYS_ERRLIST,
-[AC_CACHE_CHECK([for sys_errlist declaration in stdio.h or errno.h],
- ac_cv_decl_sys_errlist,
-[AC_TRY_COMPILE([#include <stdio.h>
-#include <errno.h>], [char *msg = *(sys_errlist + 1);],
- ac_cv_decl_sys_errlist=yes, ac_cv_decl_sys_errlist=no)])
-if test $ac_cv_decl_sys_errlist = yes; then
- AC_DEFINE(SYS_ERRLIST_DECLARED,[],
- [define if the variable sys_errlist is declared in a system header file])
-fi
-])
-
-
-dnl ----------------------------------------------------------------------
-dnl
-dnl LM_CHECK_FUNC_DECL( funname, declaration [, extra includes
-dnl [, action-if-found [, action-if-not-found]]] )
-dnl
-dnl Checks if the declaration "declaration" of "funname" conflicts
-dnl with the header files idea of how the function should be
-dnl declared. It is useful on systems which lack prototypes and you
-dnl need to provide your own (e.g. when you want to take the address
-dnl of a function). The 4'th argument is expanded if conflicting,
-dnl the 5'th argument otherwise
-dnl
-dnl
-
-AC_DEFUN(LM_CHECK_FUNC_DECL,
-[AC_MSG_CHECKING([for conflicting declaration of $1])
-AC_CACHE_VAL(ac_cv_func_decl_$1,
-[AC_TRY_COMPILE([#include <stdio.h>
-$3],[$2
-char *c = (char *)$1;
-], eval "ac_cv_func_decl_$1=no", eval "ac_cv_func_decl_$1=yes")])
-if eval "test \"`echo '$ac_cv_func_decl_'$1`\" = yes"; then
- AC_MSG_RESULT(yes)
- ifelse([$4], , :, [$4])
-else
- AC_MSG_RESULT(no)
-ifelse([$5], , , [$5
-])dnl
-fi
-])
-
-dnl ----------------------------------------------------------------------
-dnl
-dnl AC_DOUBLE_MIDDLE_ENDIAN
-dnl
-dnl Checks whether doubles are represented in "middle-endian" format.
-dnl Sets ac_cv_double_middle_endian={no,yes,unknown} accordingly,
-dnl as well as DOUBLE_MIDDLE_ENDIAN.
-dnl
-dnl
-
-AC_DEFUN([AC_C_DOUBLE_MIDDLE_ENDIAN],
-[AC_CACHE_CHECK(whether double word ordering is middle-endian, ac_cv_c_double_middle_endian,
-[# It does not; compile a test program.
-AC_RUN_IFELSE(
-[AC_LANG_SOURCE([[#include <stdlib.h>
-
-int
-main(void)
-{
- int i = 0;
- int zero = 0;
- int bigendian;
- int zero_index = 0;
-
- union
- {
- long int l;
- char c[sizeof (long int)];
- } u;
-
- /* we'll use the one with 32-bit words */
- union
- {
- double d;
- unsigned int c[2];
- } vint;
-
- union
- {
- double d;
- unsigned long c[2];
- } vlong;
-
- union
- {
- double d;
- unsigned short c[2];
- } vshort;
-
-
- /* Are we little or big endian? From Harbison&Steele. */
- u.l = 1;
- bigendian = (u.c[sizeof (long int) - 1] == 1);
-
- zero_index = bigendian ? 1 : 0;
-
- vint.d = 1.0;
- vlong.d = 1.0;
- vshort.d = 1.0;
-
- if (sizeof(unsigned int) == 4)
- {
- if (vint.c[zero_index] != 0)
- zero = 1;
- }
- else if (sizeof(unsigned long) == 4)
- {
- if (vlong.c[zero_index] != 0)
- zero = 1;
- }
- else if (sizeof(unsigned short) == 4)
- {
- if (vshort.c[zero_index] != 0)
- zero = 1;
- }
-
- exit (zero);
-}
-]])],
- [ac_cv_c_double_middle_endian=no],
- [ac_cv_c_double_middle_endian=yes],
- [ac_cv_c_double_middle=unknown])])
-case $ac_cv_c_double_middle_endian in
- yes)
- m4_default([$1],
- [AC_DEFINE([DOUBLE_MIDDLE_ENDIAN], 1,
- [Define to 1 if your processor stores the words in a double in
- middle-endian format (like some ARMs).])]) ;;
- no)
- $2 ;;
- *)
- m4_default([$3],
- [AC_MSG_WARN([unknown double endianness
-presetting ac_cv_c_double_middle_endian=no (or yes) will help])]) ;;
-esac
-])# AC_C_DOUBLE_MIDDLE_ENDIAN
-
-
-dnl ----------------------------------------------------------------------
-dnl
-dnl LM_CHECK_THR_LIB
-dnl
-dnl This macro may be used by any OTP application.
-dnl
-dnl LM_CHECK_THR_LIB sets THR_LIBS, THR_DEFS, and THR_LIB_NAME. It also
-dnl checks for some pthread headers which will appear in DEFS or config.h.
-dnl
-
-AC_DEFUN(LM_CHECK_THR_LIB,
-[
-
-NEED_NPTL_PTHREAD_H=no
-
-dnl win32?
-AC_MSG_CHECKING([for native win32 threads])
-if test "X$host_os" = "Xwin32"; then
- AC_MSG_RESULT(yes)
- THR_DEFS="-DWIN32_THREADS"
- THR_LIBS=
- THR_LIB_NAME=win32_threads
- THR_LIB_TYPE=win32_threads
-elif test "X$host_os" = "Xose"; then
- AC_MSG_RESULT(yes)
- THR_DEFS="-DOSE_THREADS"
- THR_LIBS=
- THR_LIB_NAME=ose_threads
- THR_LIB_TYPE=ose_threads
-else
- AC_MSG_RESULT(no)
- THR_DEFS=
- THR_LIBS=
- THR_LIB_NAME=
- THR_LIB_TYPE=posix_unknown
-
-dnl Try to find POSIX threads
-
-dnl The usual pthread lib...
- AC_CHECK_LIB(pthread, pthread_create, THR_LIBS="-lpthread")
-
-dnl Very old versions of FreeBSD have pthreads in special c library, c_r...
- if test "x$THR_LIBS" = "x"; then
- AC_CHECK_LIB(c_r, pthread_create, THR_LIBS="-lc_r")
- fi
-
-dnl QNX has pthreads in standard C library
- if test "x$THR_LIBS" = "x"; then
- AC_CHECK_FUNC(pthread_create, THR_LIBS="none_needed")
- fi
-
-dnl On ofs1 the '-pthread' switch should be used
- if test "x$THR_LIBS" = "x"; then
- AC_MSG_CHECKING([if the '-pthread' switch can be used])
- saved_cflags=$CFLAGS
- CFLAGS="$CFLAGS -pthread"
- AC_TRY_LINK([#include <pthread.h>],
- pthread_create((void*)0,(void*)0,(void*)0,(void*)0);,
- [THR_DEFS="-pthread"
- THR_LIBS="-pthread"])
- CFLAGS=$saved_cflags
- if test "x$THR_LIBS" != "x"; then
- AC_MSG_RESULT(yes)
- else
- AC_MSG_RESULT(no)
- fi
- fi
-
- if test "x$THR_LIBS" != "x"; then
- THR_DEFS="$THR_DEFS -D_THREAD_SAFE -D_REENTRANT -DPOSIX_THREADS"
- THR_LIB_NAME=pthread
- if test "x$THR_LIBS" = "xnone_needed"; then
- THR_LIBS=
- fi
- case $host_os in
- solaris*)
- THR_DEFS="$THR_DEFS -D_POSIX_PTHREAD_SEMANTICS" ;;
- linux*)
- THR_DEFS="$THR_DEFS -D_POSIX_THREAD_SAFE_FUNCTIONS"
-
- LM_CHECK_GETCONF
- AC_MSG_CHECKING(for Native POSIX Thread Library)
- libpthr_vsn=`$GETCONF GNU_LIBPTHREAD_VERSION 2>/dev/null`
- if test $? -eq 0; then
- case "$libpthr_vsn" in
- *nptl*|*NPTL*) nptl=yes;;
- *) nptl=no;;
- esac
- elif test "$cross_compiling" = "yes"; then
- case "$erl_xcomp_linux_nptl" in
- "") nptl=cross;;
- yes|no) nptl=$erl_xcomp_linux_nptl;;
- *) AC_MSG_ERROR([Bad erl_xcomp_linux_nptl value: $erl_xcomp_linux_nptl]);;
- esac
- else
- nptl=no
- fi
- AC_MSG_RESULT($nptl)
- if test $nptl = cross; then
- nptl=yes
- AC_MSG_WARN([result yes guessed because of cross compilation])
- fi
- if test $nptl = yes; then
- THR_LIB_TYPE=posix_nptl
- need_nptl_incldir=no
- AC_CHECK_HEADER(nptl/pthread.h,
- [need_nptl_incldir=yes
- NEED_NPTL_PTHREAD_H=yes])
- if test $need_nptl_incldir = yes; then
- # Ahh...
- nptl_path="$C_INCLUDE_PATH:$CPATH"
- if test X$cross_compiling != Xyes; then
- nptl_path="$nptl_path:/usr/local/include:/usr/include"
- else
- IROOT="$erl_xcomp_isysroot"
- test "$IROOT" != "" || IROOT="$erl_xcomp_sysroot"
- test "$IROOT" != "" || AC_MSG_ERROR([Don't know where to search for includes! Please set erl_xcomp_isysroot])
- nptl_path="$nptl_path:$IROOT/usr/local/include:$IROOT/usr/include"
- fi
- nptl_ws_path=
- save_ifs="$IFS"; IFS=":"
- for dir in $nptl_path; do
- if test "x$dir" != "x"; then
- nptl_ws_path="$nptl_ws_path $dir"
- fi
- done
- IFS=$save_ifs
- nptl_incldir=
- for dir in $nptl_ws_path; do
- AC_CHECK_HEADER($dir/nptl/pthread.h,
- nptl_incldir=$dir/nptl)
- if test "x$nptl_incldir" != "x"; then
- THR_DEFS="$THR_DEFS -isystem $nptl_incldir"
- break
- fi
- done
- if test "x$nptl_incldir" = "x"; then
- AC_MSG_ERROR(Failed to locate nptl system include directory)
- fi
- fi
- fi
- ;;
- *) ;;
- esac
-
- dnl We sometimes need THR_DEFS in order to find certain headers
- dnl (at least for pthread.h on osf1).
- saved_cppflags=$CPPFLAGS
- CPPFLAGS="$CPPFLAGS $THR_DEFS"
-
- dnl
- dnl Check for headers
- dnl
-
- AC_CHECK_HEADER(pthread.h,
- AC_DEFINE(HAVE_PTHREAD_H, 1, \
-[Define if you have the <pthread.h> header file.]))
-
- dnl Some Linuxes have <pthread/mit/pthread.h> instead of <pthread.h>
- AC_CHECK_HEADER(pthread/mit/pthread.h, \
- AC_DEFINE(HAVE_MIT_PTHREAD_H, 1, \
-[Define if the pthread.h header file is in pthread/mit directory.]))
-
- dnl restore CPPFLAGS
- CPPFLAGS=$saved_cppflags
-
- fi
-fi
-
-])
-
-AC_DEFUN(ERL_INTERNAL_LIBS,
-[
-
-ERTS_INTERNAL_X_LIBS=
-
-AC_CHECK_LIB(kstat, kstat_open,
-[AC_DEFINE(HAVE_KSTAT, 1, [Define if you have kstat])
-ERTS_INTERNAL_X_LIBS="$ERTS_INTERNAL_X_LIBS -lkstat"])
-
-AC_SUBST(ERTS_INTERNAL_X_LIBS)
-
-])
-
-AC_DEFUN(ETHR_CHK_SYNC_OP,
-[
- AC_MSG_CHECKING([for $3-bit $1()])
- case "$2" in
- "1") sync_call="$1(&var);";;
- "2") sync_call="$1(&var, ($4) 0);";;
- "3") sync_call="$1(&var, ($4) 0, ($4) 0);";;
- esac
- have_sync_op=no
- AC_TRY_LINK([],
- [
- $4 res;
- volatile $4 var;
- res = $sync_call
- ],
- [have_sync_op=yes])
- test $have_sync_op = yes && $5
- AC_MSG_RESULT([$have_sync_op])
-])
-
-AC_DEFUN(ETHR_CHK_INTERLOCKED,
-[
- ilckd="$1"
- AC_MSG_CHECKING([for ${ilckd}()])
- case "$2" in
- "1") ilckd_call="${ilckd}(var);";;
- "2") ilckd_call="${ilckd}(var, ($3) 0);";;
- "3") ilckd_call="${ilckd}(var, ($3) 0, ($3) 0);";;
- "4") ilckd_call="${ilckd}(var, ($3) 0, ($3) 0, arr);";;
- esac
- have_interlocked_op=no
- AC_TRY_LINK(
- [
- #define WIN32_LEAN_AND_MEAN
- #include <windows.h>
- #include <intrin.h>
- ],
- [
- volatile $3 *var;
- volatile $3 arr[2];
-
- $ilckd_call
- return 0;
- ],
- [have_interlocked_op=yes])
- test $have_interlocked_op = yes && $4
- AC_MSG_RESULT([$have_interlocked_op])
-])
-
-dnl ----------------------------------------------------------------------
-dnl
-dnl ERL_FIND_ETHR_LIB
-dnl
-dnl NOTE! This macro may be changed at any time! Should *only* be used by
-dnl ERTS!
-dnl
-dnl Find a thread library to use. Sets ETHR_LIBS to libraries to link
-dnl with, ETHR_X_LIBS to extra libraries to link with (same as ETHR_LIBS
-dnl except that the ethread lib itself is not included), ETHR_DEFS to
-dnl defines to compile with, ETHR_THR_LIB_BASE to the name of the
-dnl thread library which the ethread library is based on, and ETHR_LIB_NAME
-dnl to the name of the library where the ethread implementation is located.
-dnl ERL_FIND_ETHR_LIB currently searches for 'pthreads', and
-dnl 'win32_threads'. If no thread library was found ETHR_LIBS, ETHR_X_LIBS,
-dnl ETHR_DEFS, ETHR_THR_LIB_BASE, and ETHR_LIB_NAME are all set to the
-dnl empty string.
-dnl
-
-AC_DEFUN(ERL_FIND_ETHR_LIB,
-[
-
-AC_ARG_ENABLE(native-ethr-impls,
- AS_HELP_STRING([--disable-native-ethr-impls],
- [disable native ethread implementations]),
-[ case "$enableval" in
- no) disable_native_ethr_impls=yes ;;
- *) disable_native_ethr_impls=no ;;
- esac ], disable_native_ethr_impls=no)
-
-test "X$disable_native_ethr_impls" = "Xyes" &&
- AC_DEFINE(ETHR_DISABLE_NATIVE_IMPLS, 1, [Define if you want to disable native ethread implementations])
-
-AC_ARG_ENABLE(x86-out-of-order,
- AS_HELP_STRING([--enable-x86-out-of-order],
- [enable x86/x84_64 out of order support (default disabled)]))
-
-AC_ARG_ENABLE(prefer-gcc-native-ethr-impls,
- AS_HELP_STRING([--enable-prefer-gcc-native-ethr-impls],
- [prefer gcc native ethread implementations]),
-[ case "$enableval" in
- yes) enable_prefer_gcc_native_ethr_impls=yes ;;
- *) enable_prefer_gcc_native_ethr_impls=no ;;
- esac ], enable_prefer_gcc_native_ethr_impls=no)
-
-test $enable_prefer_gcc_native_ethr_impls = yes &&
- AC_DEFINE(ETHR_PREFER_GCC_NATIVE_IMPLS, 1, [Define if you prefer gcc native ethread implementations])
-
-AC_ARG_WITH(libatomic_ops,
- AS_HELP_STRING([--with-libatomic_ops=PATH],
- [specify and prefer usage of libatomic_ops in the ethread library]))
-
-AC_ARG_WITH(with_sparc_memory_order,
- AS_HELP_STRING([--with-sparc-memory-order=TSO|PSO|RMO],
- [specify sparc memory order (defaults to RMO)]))
-
-LM_CHECK_THR_LIB
-ERL_INTERNAL_LIBS
-
-ethr_have_native_atomics=no
-ethr_have_native_spinlock=no
-ETHR_THR_LIB_BASE="$THR_LIB_NAME"
-ETHR_THR_LIB_BASE_TYPE="$THR_LIB_TYPE"
-ETHR_DEFS="$THR_DEFS"
-ETHR_X_LIBS="$THR_LIBS $ERTS_INTERNAL_X_LIBS"
-ETHR_LIBS=
-ETHR_LIB_NAME=
-
-ethr_modified_default_stack_size=
-
-dnl Name of lib where ethread implementation is located
-ethr_lib_name=ethread
-
-case "$THR_LIB_NAME" in
-
- win32_threads)
- ETHR_THR_LIB_BASE_DIR=win
- # * _WIN32_WINNT >= 0x0400 is needed for
- # TryEnterCriticalSection
- # * _WIN32_WINNT >= 0x0403 is needed for
- # InitializeCriticalSectionAndSpinCount
- # The ethread lib will refuse to build if _WIN32_WINNT < 0x0403.
- #
- # -D_WIN32_WINNT should have been defined in $CPPFLAGS; fetch it
- # and save it in ETHR_DEFS.
- found_win32_winnt=no
- for cppflag in $CPPFLAGS; do
- case $cppflag in
- -DWINVER*)
- ETHR_DEFS="$ETHR_DEFS $cppflag"
- ;;
- -D_WIN32_WINNT*)
- ETHR_DEFS="$ETHR_DEFS $cppflag"
- found_win32_winnt=yes
- ;;
- *)
- ;;
- esac
- done
- if test $found_win32_winnt = no; then
- AC_MSG_ERROR([-D_WIN32_WINNT missing in CPPFLAGS])
- fi
-
- AC_DEFINE(ETHR_WIN32_THREADS, 1, [Define if you have win32 threads])
-
- if test "X$disable_native_ethr_impls" = "Xyes"; then
- have_interlocked_op=no
- ethr_have_native_atomics=no
- else
- ETHR_CHK_INTERLOCKED([_InterlockedDecrement], [1], [long], AC_DEFINE_UNQUOTED(ETHR_HAVE__INTERLOCKEDDECREMENT, 1, [Define if you have _InterlockedDecrement()]))
- ETHR_CHK_INTERLOCKED([_InterlockedDecrement_rel], [1], [long], AC_DEFINE_UNQUOTED(ETHR_HAVE__INTERLOCKEDDECREMENT_REL, 1, [Define if you have _InterlockedDecrement_rel()]))
- ETHR_CHK_INTERLOCKED([_InterlockedIncrement], [1], [long], AC_DEFINE_UNQUOTED(ETHR_HAVE__INTERLOCKEDINCREMENT, 1, [Define if you have _InterlockedIncrement()]))
- ETHR_CHK_INTERLOCKED([_InterlockedIncrement_acq], [1], [long], AC_DEFINE_UNQUOTED(ETHR_HAVE__INTERLOCKEDINCREMENT_ACQ, 1, [Define if you have _InterlockedIncrement_acq()]))
- ETHR_CHK_INTERLOCKED([_InterlockedExchangeAdd], [2], [long], AC_DEFINE_UNQUOTED(ETHR_HAVE__INTERLOCKEDEXCHANGEADD, 1, [Define if you have _InterlockedExchangeAdd()]))
- ETHR_CHK_INTERLOCKED([_InterlockedExchangeAdd_acq], [2], [long], AC_DEFINE_UNQUOTED(ETHR_HAVE__INTERLOCKEDEXCHANGEADD_ACQ, 1, [Define if you have _InterlockedExchangeAdd_acq()]))
- ETHR_CHK_INTERLOCKED([_InterlockedAnd], [2], [long], AC_DEFINE_UNQUOTED(ETHR_HAVE__INTERLOCKEDAND, 1, [Define if you have _InterlockedAnd()]))
- ETHR_CHK_INTERLOCKED([_InterlockedOr], [2], [long], AC_DEFINE_UNQUOTED(ETHR_HAVE__INTERLOCKEDOR, 1, [Define if you have _InterlockedOr()]))
- ETHR_CHK_INTERLOCKED([_InterlockedExchange], [2], [long], AC_DEFINE_UNQUOTED(ETHR_HAVE__INTERLOCKEDEXCHANGE, 1, [Define if you have _InterlockedExchange()]))
- ETHR_CHK_INTERLOCKED([_InterlockedCompareExchange], [3], [long], AC_DEFINE_UNQUOTED(ETHR_HAVE__INTERLOCKEDCOMPAREEXCHANGE, 1, [Define if you have _InterlockedCompareExchange()]))
- test "$have_interlocked_op" = "yes" && ethr_have_native_atomics=yes
- ETHR_CHK_INTERLOCKED([_InterlockedCompareExchange_acq], [3], [long], AC_DEFINE_UNQUOTED(ETHR_HAVE__INTERLOCKEDCOMPAREEXCHANGE_ACQ, 1, [Define if you have _InterlockedCompareExchange_acq()]))
- test "$have_interlocked_op" = "yes" && ethr_have_native_atomics=yes
- ETHR_CHK_INTERLOCKED([_InterlockedCompareExchange_rel], [3], [long], AC_DEFINE_UNQUOTED(ETHR_HAVE__INTERLOCKEDCOMPAREEXCHANGE_REL, 1, [Define if you have _InterlockedCompareExchange_rel()]))
- test "$have_interlocked_op" = "yes" && ethr_have_native_atomics=yes
-
- ETHR_CHK_INTERLOCKED([_InterlockedDecrement64], [1], [__int64], AC_DEFINE_UNQUOTED(ETHR_HAVE__INTERLOCKEDDECREMENT64, 1, [Define if you have _InterlockedDecrement64()]))
- ETHR_CHK_INTERLOCKED([_InterlockedDecrement64_rel], [1], [__int64], AC_DEFINE_UNQUOTED(ETHR_HAVE__INTERLOCKEDDECREMENT64_REL, 1, [Define if you have _InterlockedDecrement64_rel()]))
- ETHR_CHK_INTERLOCKED([_InterlockedIncrement64], [1], [__int64], AC_DEFINE_UNQUOTED(ETHR_HAVE__INTERLOCKEDINCREMENT64, 1, [Define if you have _InterlockedIncrement64()]))
- ETHR_CHK_INTERLOCKED([_InterlockedIncrement64_acq], [1], [__int64], AC_DEFINE_UNQUOTED(ETHR_HAVE__INTERLOCKEDINCREMENT64_ACQ, 1, [Define if you have _InterlockedIncrement64_acq()]))
- ETHR_CHK_INTERLOCKED([_InterlockedExchangeAdd64], [2], [__int64], AC_DEFINE_UNQUOTED(ETHR_HAVE__INTERLOCKEDEXCHANGEADD64, 1, [Define if you have _InterlockedExchangeAdd64()]))
- ETHR_CHK_INTERLOCKED([_InterlockedExchangeAdd64_acq], [2], [__int64], AC_DEFINE_UNQUOTED(ETHR_HAVE__INTERLOCKEDEXCHANGEADD64_ACQ, 1, [Define if you have _InterlockedExchangeAdd64_acq()]))
- ETHR_CHK_INTERLOCKED([_InterlockedAnd64], [2], [__int64], AC_DEFINE_UNQUOTED(ETHR_HAVE__INTERLOCKEDAND64, 1, [Define if you have _InterlockedAnd64()]))
- ETHR_CHK_INTERLOCKED([_InterlockedOr64], [2], [__int64], AC_DEFINE_UNQUOTED(ETHR_HAVE__INTERLOCKEDOR64, 1, [Define if you have _InterlockedOr64()]))
- ETHR_CHK_INTERLOCKED([_InterlockedExchange64], [2], [__int64], AC_DEFINE_UNQUOTED(ETHR_HAVE__INTERLOCKEDEXCHANGE64, 1, [Define if you have _InterlockedExchange64()]))
- ETHR_CHK_INTERLOCKED([_InterlockedCompareExchange64], [3], [__int64], AC_DEFINE_UNQUOTED(ETHR_HAVE__INTERLOCKEDCOMPAREEXCHANGE64, 1, [Define if you have _InterlockedCompareExchange64()]))
- test "$have_interlocked_op" = "yes" && ethr_have_native_atomics=yes
- ETHR_CHK_INTERLOCKED([_InterlockedCompareExchange64_acq], [3], [__int64], AC_DEFINE_UNQUOTED(ETHR_HAVE__INTERLOCKEDCOMPAREEXCHANGE64_ACQ, 1, [Define if you have _InterlockedCompareExchange64_acq()]))
- test "$have_interlocked_op" = "yes" && ethr_have_native_atomics=yes
- ETHR_CHK_INTERLOCKED([_InterlockedCompareExchange64_rel], [3], [__int64], AC_DEFINE_UNQUOTED(ETHR_HAVE__INTERLOCKEDCOMPAREEXCHANGE64_REL, 1, [Define if you have _InterlockedCompareExchange64_rel()]))
- test "$have_interlocked_op" = "yes" && ethr_have_native_atomics=yes
-
- ETHR_CHK_INTERLOCKED([_InterlockedCompareExchange128], [4], [__int64], AC_DEFINE_UNQUOTED(ETHR_HAVE__INTERLOCKEDCOMPAREEXCHANGE128, 1, [Define if you have _InterlockedCompareExchange128()]))
- fi
- test "$ethr_have_native_atomics" = "yes" && ethr_have_native_spinlock=yes
- ;;
-
- pthread|ose_threads)
- case "$THR_LIB_NAME" in
- pthread)
- ETHR_THR_LIB_BASE_DIR=pthread
- AC_DEFINE(ETHR_PTHREADS, 1, [Define if you have pthreads])
- ;;
- ose_threads)
- AC_DEFINE(ETHR_OSE_THREADS, 1,
- [Define if you have OSE style threads])
- ETHR_THR_LIB_BASE_DIR=ose
- AC_CHECK_HEADER(ose_spi/ose_spi.h,
- AC_DEFINE(HAVE_OSE_SPI_H, 1,
- [Define if you have the "ose_spi/ose_spi.h" header file.]))
- ;;
- esac
- if test "x$THR_LIB_NAME" = "xpthread"; then
- case $host_os in
- openbsd*)
- # The default stack size is insufficient for our needs
- # on OpenBSD. We increase it to 256 kilo words.
- ethr_modified_default_stack_size=256;;
- linux*)
- ETHR_DEFS="$ETHR_DEFS -D_GNU_SOURCE"
-
- if test X$cross_compiling = Xyes; then
- case X$erl_xcomp_linux_usable_sigusrx in
- X) usable_sigusrx=cross;;
- Xyes|Xno) usable_sigusrx=$erl_xcomp_linux_usable_sigusrx;;
- *) AC_MSG_ERROR([Bad erl_xcomp_linux_usable_sigusrx value: $erl_xcomp_linux_usable_sigusrx]);;
- esac
- case X$erl_xcomp_linux_usable_sigaltstack in
- X) usable_sigaltstack=cross;;
- Xyes|Xno) usable_sigaltstack=$erl_xcomp_linux_usable_sigaltstack;;
- *) AC_MSG_ERROR([Bad erl_xcomp_linux_usable_sigaltstack value: $erl_xcomp_linux_usable_sigaltstack]);;
- esac
- else
- # FIXME: Test for actual problems instead of kernel versions
- linux_kernel_vsn_=`uname -r`
- case $linux_kernel_vsn_ in
- [[0-1]].*|2.[[0-1]]|2.[[0-1]].*)
- usable_sigusrx=no
- usable_sigaltstack=no;;
- 2.[[2-3]]|2.[[2-3]].*)
- usable_sigusrx=yes
- usable_sigaltstack=no;;
- *)
- usable_sigusrx=yes
- usable_sigaltstack=yes;;
- esac
- fi
-
- AC_MSG_CHECKING(if SIGUSR1 and SIGUSR2 can be used)
- AC_MSG_RESULT($usable_sigusrx)
- if test $usable_sigusrx = cross; then
- usable_sigusrx=yes
- AC_MSG_WARN([result yes guessed because of cross compilation])
- fi
- if test $usable_sigusrx = no; then
- ETHR_DEFS="$ETHR_DEFS -DETHR_UNUSABLE_SIGUSRX"
- fi
-
- AC_MSG_CHECKING(if sigaltstack can be used)
- AC_MSG_RESULT($usable_sigaltstack)
- if test $usable_sigaltstack = cross; then
- usable_sigaltstack=yes
- AC_MSG_WARN([result yes guessed because of cross compilation])
- fi
- if test $usable_sigaltstack = no; then
- ETHR_DEFS="$ETHR_DEFS -DETHR_UNUSABLE_SIGALTSTACK"
- fi
- ;;
- *) ;;
- esac
-
- fi
- dnl We sometimes need ETHR_DEFS in order to find certain headers
- dnl (at least for pthread.h on osf1).
- saved_cppflags="$CPPFLAGS"
- CPPFLAGS="$CPPFLAGS $ETHR_DEFS"
-
- dnl We need the thread library in order to find some functions
- saved_libs="$LIBS"
- LIBS="$LIBS $ETHR_X_LIBS"
-
- dnl
- dnl Check for headers
- dnl
- AC_CHECK_HEADER(pthread.h, \
- AC_DEFINE(ETHR_HAVE_PTHREAD_H, 1, \
-[Define if you have the <pthread.h> header file.]))
-
- dnl Some Linuxes have <pthread/mit/pthread.h> instead of <pthread.h>
- AC_CHECK_HEADER(pthread/mit/pthread.h, \
- AC_DEFINE(ETHR_HAVE_MIT_PTHREAD_H, 1, \
-[Define if the pthread.h header file is in pthread/mit directory.]))
-
- if test $NEED_NPTL_PTHREAD_H = yes; then
- AC_DEFINE(ETHR_NEED_NPTL_PTHREAD_H, 1, \
-[Define if you need the <nptl/pthread.h> header file.])
- fi
-
- AC_CHECK_HEADER(sched.h, \
- AC_DEFINE(ETHR_HAVE_SCHED_H, 1, \
-[Define if you have the <sched.h> header file.]))
-
- AC_CHECK_HEADER(sys/time.h, \
- AC_DEFINE(ETHR_HAVE_SYS_TIME_H, 1, \
-[Define if you have the <sys/time.h> header file.]))
-
- AC_TRY_COMPILE([#include <time.h>
- #include <sys/time.h>],
- [struct timeval *tv; return 0;],
- AC_DEFINE(ETHR_TIME_WITH_SYS_TIME, 1, \
-[Define if you can safely include both <sys/time.h> and <time.h>.]))
-
-
- dnl
- dnl Check for functions
- dnl
- if test "x$THR_LIB_NAME" = "xpthread"; then
- AC_CHECK_FUNC(pthread_spin_lock, \
- [ethr_have_native_spinlock=yes \
- AC_DEFINE(ETHR_HAVE_PTHREAD_SPIN_LOCK, 1, \
-[Define if you have the pthread_spin_lock function.])])
-
- have_sched_yield=no
- have_librt_sched_yield=no
- AC_CHECK_FUNC(sched_yield, [have_sched_yield=yes])
- if test $have_sched_yield = no; then
- AC_CHECK_LIB(rt, sched_yield,
- [have_librt_sched_yield=yes
- ETHR_X_LIBS="$ETHR_X_LIBS -lrt"])
- fi
- if test $have_sched_yield = yes || test $have_librt_sched_yield = yes; then
- AC_DEFINE(ETHR_HAVE_SCHED_YIELD, 1, [Define if you have the sched_yield() function.])
- AC_MSG_CHECKING([whether sched_yield() returns an int])
- sched_yield_ret_int=no
- AC_TRY_COMPILE([
- #ifdef ETHR_HAVE_SCHED_H
- #include <sched.h>
- #endif
- ],
- [int sched_yield();],
- [sched_yield_ret_int=yes])
- AC_MSG_RESULT([$sched_yield_ret_int])
- if test $sched_yield_ret_int = yes; then
- AC_DEFINE(ETHR_SCHED_YIELD_RET_INT, 1, [Define if sched_yield() returns an int.])
- fi
- fi
-
- have_pthread_yield=no
- AC_CHECK_FUNC(pthread_yield, [have_pthread_yield=yes])
- if test $have_pthread_yield = yes; then
- AC_DEFINE(ETHR_HAVE_PTHREAD_YIELD, 1, [Define if you have the pthread_yield() function.])
- AC_MSG_CHECKING([whether pthread_yield() returns an int])
- pthread_yield_ret_int=no
- AC_TRY_COMPILE([
- #if defined(ETHR_NEED_NPTL_PTHREAD_H)
- #include <nptl/pthread.h>
- #elif defined(ETHR_HAVE_MIT_PTHREAD_H)
- #include <pthread/mit/pthread.h>
- #elif defined(ETHR_HAVE_PTHREAD_H)
- #include <pthread.h>
- #endif
- ],
- [int pthread_yield();],
- [pthread_yield_ret_int=yes])
- AC_MSG_RESULT([$pthread_yield_ret_int])
- if test $pthread_yield_ret_int = yes; then
- AC_DEFINE(ETHR_PTHREAD_YIELD_RET_INT, 1, [Define if pthread_yield() returns an int.])
- fi
- fi
-
- have_pthread_rwlock_init=no
- AC_CHECK_FUNC(pthread_rwlock_init, [have_pthread_rwlock_init=yes])
- if test $have_pthread_rwlock_init = yes; then
-
- ethr_have_pthread_rwlockattr_setkind_np=no
- AC_CHECK_FUNC(pthread_rwlockattr_setkind_np,
- [ethr_have_pthread_rwlockattr_setkind_np=yes])
-
- if test $ethr_have_pthread_rwlockattr_setkind_np = yes; then
- AC_DEFINE(ETHR_HAVE_PTHREAD_RWLOCKATTR_SETKIND_NP, 1, \
-[Define if you have the pthread_rwlockattr_setkind_np() function.])
-
- AC_MSG_CHECKING([for PTHREAD_RWLOCK_PREFER_WRITER_NONRECURSIVE_NP])
- ethr_pthread_rwlock_writer_nonrecursive_initializer_np=no
- AC_TRY_LINK([
- #if defined(ETHR_NEED_NPTL_PTHREAD_H)
- #include <nptl/pthread.h>
- #elif defined(ETHR_HAVE_MIT_PTHREAD_H)
- #include <pthread/mit/pthread.h>
- #elif defined(ETHR_HAVE_PTHREAD_H)
- #include <pthread.h>
- #endif
- ],
- [
- pthread_rwlockattr_t *attr;
- return pthread_rwlockattr_setkind_np(attr,
- PTHREAD_RWLOCK_PREFER_WRITER_NONRECURSIVE_NP);
- ],
- [ethr_pthread_rwlock_writer_nonrecursive_initializer_np=yes])
- AC_MSG_RESULT([$ethr_pthread_rwlock_writer_nonrecursive_initializer_np])
- if test $ethr_pthread_rwlock_writer_nonrecursive_initializer_np = yes; then
- AC_DEFINE(ETHR_HAVE_PTHREAD_RWLOCK_PREFER_WRITER_NONRECURSIVE_NP, 1, \
-[Define if you have the PTHREAD_RWLOCK_PREFER_WRITER_NONRECURSIVE_NP rwlock attribute.])
- fi
- fi
- fi
-
- if test "$force_pthread_rwlocks" = "yes"; then
-
- AC_DEFINE(ETHR_FORCE_PTHREAD_RWLOCK, 1, \
-[Define if you want to force usage of pthread rwlocks])
-
- if test $have_pthread_rwlock_init = yes; then
- AC_MSG_WARN([Forced usage of pthread rwlocks. Note that this implementation may suffer from starvation issues.])
- else
- AC_MSG_ERROR([User forced usage of pthread rwlock, but no such implementation was found])
- fi
- fi
-
- AC_CHECK_FUNC(pthread_attr_setguardsize, \
- AC_DEFINE(ETHR_HAVE_PTHREAD_ATTR_SETGUARDSIZE, 1, \
-[Define if you have the pthread_attr_setguardsize function.]))
-
- linux_futex=no
- AC_MSG_CHECKING([for Linux futexes])
- AC_TRY_LINK([
- #include <sys/syscall.h>
- #include <unistd.h>
- #include <linux/futex.h>
- #include <sys/time.h>
- ],
- [
- int i = 1;
- syscall(__NR_futex, (void *) &i, FUTEX_WAKE, 1,
- (void*)0,(void*)0, 0);
- syscall(__NR_futex, (void *) &i, FUTEX_WAIT, 0,
- (void*)0,(void*)0, 0);
- return 0;
- ],
- linux_futex=yes)
- AC_MSG_RESULT([$linux_futex])
- test $linux_futex = yes && AC_DEFINE(ETHR_HAVE_LINUX_FUTEX, 1, [Define if you have a linux futex implementation.])
-
- fi
-
- AC_CHECK_SIZEOF(int)
- AC_CHECK_SIZEOF(long)
- AC_CHECK_SIZEOF(long long)
- AC_CHECK_SIZEOF(__int128_t)
-
- if test "$ac_cv_sizeof_int" = "4"; then
- int32="int"
- elif test "$ac_cv_sizeof_long" = "4"; then
- int32="long"
- elif test "$ac_cv_sizeof_long_long" = "4"; then
- int32="long long"
- else
- AC_MSG_ERROR([No 32-bit type found])
- fi
-
- if test "$ac_cv_sizeof_int" = "8"; then
- int64="int"
- elif test "$ac_cv_sizeof_long" = "8"; then
- int64="long"
- elif test "$ac_cv_sizeof_long_long" = "8"; then
- int64="long long"
- else
- AC_MSG_ERROR([No 64-bit type found])
- fi
-
- int128=no
- if test "$ac_cv_sizeof___int128_t" = "16"; then
- int128="__int128_t"
- fi
-
- if test "X$disable_native_ethr_impls" = "Xyes"; then
- ethr_have_native_atomics=no
- else
- ETHR_CHK_SYNC_OP([__sync_val_compare_and_swap], [3], [32], [$int32], AC_DEFINE(ETHR_HAVE___SYNC_VAL_COMPARE_AND_SWAP32, 1, [Define if you have __sync_val_compare_and_swap() for 32-bit integers]))
- test "$have_sync_op" = "yes" && ethr_have_native_atomics=yes
- ETHR_CHK_SYNC_OP([__sync_add_and_fetch], [2], [32], [$int32], AC_DEFINE(ETHR_HAVE___SYNC_ADD_AND_FETCH32, 1, [Define if you have __sync_add_and_fetch() for 32-bit integers]))
- ETHR_CHK_SYNC_OP([__sync_fetch_and_and], [2], [32], [$int32], AC_DEFINE(ETHR_HAVE___SYNC_FETCH_AND_AND32, 1, [Define if you have __sync_fetch_and_and() for 32-bit integers]))
- ETHR_CHK_SYNC_OP([__sync_fetch_and_or], [2], [32], [$int32], AC_DEFINE(ETHR_HAVE___SYNC_FETCH_AND_OR32, 1, [Define if you have __sync_fetch_and_or() for 32-bit integers]))
-
- ETHR_CHK_SYNC_OP([__sync_val_compare_and_swap], [3], [64], [$int64], AC_DEFINE(ETHR_HAVE___SYNC_VAL_COMPARE_AND_SWAP64, 1, [Define if you have __sync_val_compare_and_swap() for 64-bit integers]))
- test "$have_sync_op" = "yes" && ethr_have_native_atomics=yes
- ETHR_CHK_SYNC_OP([__sync_add_and_fetch], [2], [64], [$int64], AC_DEFINE(ETHR_HAVE___SYNC_ADD_AND_FETCH64, 1, [Define if you have __sync_add_and_fetch() for 64-bit integers]))
- ETHR_CHK_SYNC_OP([__sync_fetch_and_and], [2], [64], [$int64], AC_DEFINE(ETHR_HAVE___SYNC_FETCH_AND_AND64, 1, [Define if you have __sync_fetch_and_and() for 64-bit integers]))
- ETHR_CHK_SYNC_OP([__sync_fetch_and_or], [2], [64], [$int64], AC_DEFINE(ETHR_HAVE___SYNC_FETCH_AND_OR64, 1, [Define if you have __sync_fetch_and_or() for 64-bit integers]))
-
- if test $int128 != no; then
- ETHR_CHK_SYNC_OP([__sync_val_compare_and_swap], [3], [128], [$int128], AC_DEFINE(ETHR_HAVE___SYNC_VAL_COMPARE_AND_SWAP128, 1, [Define if you have __sync_val_compare_and_swap() for 128-bit integers]))
- fi
-
- AC_MSG_CHECKING([for a usable libatomic_ops implementation])
- case "x$with_libatomic_ops" in
- xno | xyes | x)
- libatomic_ops_include=
- ;;
- *)
- if test -d "${with_libatomic_ops}/include"; then
- libatomic_ops_include="-I$with_libatomic_ops/include"
- CPPFLAGS="$CPPFLAGS $libatomic_ops_include"
- else
- AC_MSG_ERROR([libatomic_ops include directory $with_libatomic_ops/include not found])
- fi;;
- esac
- ethr_have_libatomic_ops=no
- AC_TRY_LINK([#include "atomic_ops.h"],
- [
- volatile AO_t x;
- AO_t y;
- int z;
-
- AO_nop_full();
-#if defined(AO_HAVE_store)
- AO_store(&x, (AO_t) 0);
-#elif defined(AO_HAVE_store_release)
- AO_store_release(&x, (AO_t) 0);
-#else
-#error No store
-#endif
-#if defined(AO_HAVE_load)
- z = AO_load(&x);
-#elif defined(AO_HAVE_load_acquire)
- z = AO_load_acquire(&x);
-#else
-#error No load
-#endif
-#if defined(AO_HAVE_compare_and_swap_full)
- z = AO_compare_and_swap_full(&x, (AO_t) 0, (AO_t) 1);
-#elif defined(AO_HAVE_compare_and_swap_release)
- z = AO_compare_and_swap_release(&x, (AO_t) 0, (AO_t) 1);
-#elif defined(AO_HAVE_compare_and_swap_acquire)
- z = AO_compare_and_swap_acquire(&x, (AO_t) 0, (AO_t) 1);
-#elif defined(AO_HAVE_compare_and_swap)
- z = AO_compare_and_swap(&x, (AO_t) 0, (AO_t) 1);
-#else
-#error No compare_and_swap
-#endif
- ],
- [ethr_have_native_atomics=yes
- ethr_have_libatomic_ops=yes])
- AC_MSG_RESULT([$ethr_have_libatomic_ops])
- if test $ethr_have_libatomic_ops = yes; then
- AC_CHECK_SIZEOF(AO_t, ,
- [
- #include <stdio.h>
- #include "atomic_ops.h"
- ])
- AC_DEFINE_UNQUOTED(ETHR_SIZEOF_AO_T, $ac_cv_sizeof_AO_t, [Define to the size of AO_t if libatomic_ops is used])
-
- AC_DEFINE(ETHR_HAVE_LIBATOMIC_OPS, 1, [Define if you have libatomic_ops atomic operations])
- if test "x$with_libatomic_ops" != "xno" && test "x$with_libatomic_ops" != "x"; then
- AC_DEFINE(ETHR_PREFER_LIBATOMIC_OPS_NATIVE_IMPLS, 1, [Define if you prefer libatomic_ops native ethread implementations])
- fi
- ETHR_DEFS="$ETHR_DEFS $libatomic_ops_include"
- elif test "x$with_libatomic_ops" != "xno" && test "x$with_libatomic_ops" != "x"; then
- AC_MSG_ERROR([No usable libatomic_ops implementation found])
- fi
-
- case "$host_cpu" in
- sparc | sun4u | sparc64 | sun4v)
- case "$with_sparc_memory_order" in
- "TSO")
- AC_DEFINE(ETHR_SPARC_TSO, 1, [Define if only run in Sparc TSO mode]);;
- "PSO")
- AC_DEFINE(ETHR_SPARC_PSO, 1, [Define if only run in Sparc PSO, or TSO mode]);;
- "RMO"|"")
- AC_DEFINE(ETHR_SPARC_RMO, 1, [Define if run in Sparc RMO, PSO, or TSO mode]);;
- *)
- AC_MSG_ERROR([Unsupported Sparc memory order: $with_sparc_memory_order]);;
- esac
- ethr_have_native_atomics=yes;;
- i86pc | i*86 | x86_64 | amd64)
- if test "$enable_x86_out_of_order" = "yes"; then
- AC_DEFINE(ETHR_X86_OUT_OF_ORDER, 1, [Define if x86/x86_64 out of order instructions should be synchronized])
- fi
- ethr_have_native_atomics=yes;;
- macppc | ppc | powerpc | "Power Macintosh")
- ethr_have_native_atomics=yes;;
- tile)
- ethr_have_native_atomics=yes;;
- *)
- ;;
- esac
-
- fi
-
- test ethr_have_native_atomics = "yes" && ethr_have_native_spinlock=yes
-
- dnl Restore LIBS
- LIBS=$saved_libs
- dnl restore CPPFLAGS
- CPPFLAGS=$saved_cppflags
-
- ;;
- *)
- ;;
-esac
-
-AC_MSG_CHECKING([whether default stack size should be modified])
-if test "x$ethr_modified_default_stack_size" != "x"; then
- AC_DEFINE_UNQUOTED(ETHR_MODIFIED_DEFAULT_STACK_SIZE, $ethr_modified_default_stack_size, [Define if you want to modify the default stack size])
- AC_MSG_RESULT([yes; to $ethr_modified_default_stack_size kilo words])
-else
- AC_MSG_RESULT([no])
-fi
-
-if test "x$ETHR_THR_LIB_BASE" != "x"; then
- ETHR_DEFS="-DUSE_THREADS $ETHR_DEFS"
- ETHR_LIBS="-l$ethr_lib_name -lerts_internal_r $ETHR_X_LIBS"
- ETHR_LIB_NAME=$ethr_lib_name
-fi
-
-AC_CHECK_SIZEOF(void *)
-AC_DEFINE_UNQUOTED(ETHR_SIZEOF_PTR, $ac_cv_sizeof_void_p, [Define to the size of pointers])
-
-AC_CHECK_SIZEOF(int)
-AC_DEFINE_UNQUOTED(ETHR_SIZEOF_INT, $ac_cv_sizeof_int, [Define to the size of int])
-AC_CHECK_SIZEOF(long)
-AC_DEFINE_UNQUOTED(ETHR_SIZEOF_LONG, $ac_cv_sizeof_long, [Define to the size of long])
-AC_CHECK_SIZEOF(long long)
-AC_DEFINE_UNQUOTED(ETHR_SIZEOF_LONG_LONG, $ac_cv_sizeof_long_long, [Define to the size of long long])
-AC_CHECK_SIZEOF(__int64)
-AC_DEFINE_UNQUOTED(ETHR_SIZEOF___INT64, $ac_cv_sizeof___int64, [Define to the size of __int64])
-AC_CHECK_SIZEOF(__int128_t)
-AC_DEFINE_UNQUOTED(ETHR_SIZEOF___INT128_T, $ac_cv_sizeof___int128_t, [Define to the size of __int128_t])
-
-
-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
-
-if test "$ac_cv_c_bigendian" = "yes"; then
- AC_DEFINE(ETHR_BIGENDIAN, 1, [Define if bigendian])
-fi
-
-case X$erl_xcomp_double_middle_endian in
- X) ;;
- Xyes|Xno|Xunknown) ac_cv_c_double_middle_endian=$erl_xcomp_double_middle_endian;;
- *) AC_MSG_ERROR([Bad erl_xcomp_double_middle_endian value: $erl_xcomp_double_middle_endian]);;
-esac
-
-AC_C_DOUBLE_MIDDLE_ENDIAN
-
-ETHR_X86_SSE2_ASM=no
-case "$GCC-$ac_cv_sizeof_void_p-$host_cpu" in
- yes-4-i86pc | yes-4-i*86 | yes-4-x86_64 | yes-4-amd64)
- AC_MSG_CHECKING([for gcc sse2 asm support])
- save_CFLAGS="$CFLAGS"
- CFLAGS="$CFLAGS -msse2"
- gcc_sse2_asm=no
- AC_TRY_COMPILE([],
- [
- long long x, *y;
- __asm__ __volatile__("movq %1, %0\n\t" : "=x"(x) : "m"(*y) : "memory");
- ],
- [gcc_sse2_asm=yes])
- CFLAGS="$save_CFLAGS"
- AC_MSG_RESULT([$gcc_sse2_asm])
- if test "$gcc_sse2_asm" = "yes"; then
- AC_DEFINE(ETHR_GCC_HAVE_SSE2_ASM_SUPPORT, 1, [Define if you use a gcc that supports -msse2 and understand sse2 specific asm statements])
- ETHR_X86_SSE2_ASM=yes
- fi
- ;;
- *)
- ;;
-esac
-
-case "$GCC-$host_cpu" in
- yes-i86pc | yes-i*86 | yes-x86_64 | yes-amd64)
- gcc_dw_cmpxchg_asm=no
- AC_MSG_CHECKING([for gcc double word cmpxchg asm support])
- AC_TRY_COMPILE([],
- [
- char xchgd;
- long new[2], xchg[2], *p;
- __asm__ __volatile__(
-#if ETHR_SIZEOF_PTR == 4 && defined(__PIC__) && __PIC__
- "pushl %%ebx\n\t"
- "movl %8, %%ebx\n\t"
-#endif
-#if ETHR_SIZEOF_PTR == 4
- "lock; cmpxchg8b %0\n\t"
-#else
- "lock; cmpxchg16b %0\n\t"
-#endif
- "setz %3\n\t"
-#if ETHR_SIZEOF_PTR == 4 && defined(__PIC__) && __PIC__
- "popl %%ebx\n\t"
-#endif
- : "=m"(*p), "=d"(xchg[1]), "=a"(xchg[0]), "=c"(xchgd)
- : "m"(*p), "1"(xchg[1]), "2"(xchg[0]), "3"(new[1]),
-#if ETHR_SIZEOF_PTR == 4 && defined(__PIC__) && __PIC__
- "r"(new[0])
-#else
- "b"(new[0])
-#endif
- : "cc", "memory");
-
- ],
- [gcc_dw_cmpxchg_asm=yes])
- if test $gcc_dw_cmpxchg_asm = no && test $ac_cv_sizeof_void_p = 4; then
- AC_TRY_COMPILE([],
- [
- char xchgd;
- long new[2], xchg[2], *p;
-#if !defined(__PIC__) || !__PIC__
-# error nope
-#endif
- __asm__ __volatile__(
- "pushl %%ebx\n\t"
- "movl (%7), %%ebx\n\t"
- "movl 4(%7), %%ecx\n\t"
- "lock; cmpxchg8b %0\n\t"
- "setz %3\n\t"
- "popl %%ebx\n\t"
- : "=m"(*p), "=d"(xchg[1]), "=a"(xchg[0]), "=c"(xchgd)
- : "m"(*p), "1"(xchg[1]), "2"(xchg[0]), "3"(new)
- : "cc", "memory");
-
- ],
- [gcc_dw_cmpxchg_asm=yes])
- if test "$gcc_dw_cmpxchg_asm" = "yes"; then
- AC_DEFINE(ETHR_CMPXCHG8B_REGISTER_SHORTAGE, 1, [Define if you get a register shortage with cmpxchg8b and position independent code])
- fi
- fi
- AC_MSG_RESULT([$gcc_dw_cmpxchg_asm])
- if test "$gcc_dw_cmpxchg_asm" = "yes"; then
- AC_DEFINE(ETHR_GCC_HAVE_DW_CMPXCHG_ASM_SUPPORT, 1, [Define if you use a gcc that supports the double word cmpxchg instruction])
- fi;;
- *)
- ;;
-esac
-
-AC_DEFINE(ETHR_HAVE_ETHREAD_DEFINES, 1, \
-[Define if you have all ethread defines])
-
-AC_SUBST(ETHR_X_LIBS)
-AC_SUBST(ETHR_LIBS)
-AC_SUBST(ETHR_LIB_NAME)
-AC_SUBST(ETHR_DEFS)
-AC_SUBST(ETHR_THR_LIB_BASE)
-AC_SUBST(ETHR_THR_LIB_BASE_DIR)
-AC_SUBST(ETHR_X86_SSE2_ASM)
-
-])
-
-
-
-dnl ----------------------------------------------------------------------
-dnl
-dnl ERL_TIME_CORRECTION
-dnl
-dnl In the presence of a high resolution realtime timer Erlang can adapt
-dnl its view of time relative to this timer. On solaris such a timer is
-dnl available with the syscall gethrtime(). On other OS's a fallback
-dnl solution using times() is implemented. (However on e.g. FreeBSD times()
-dnl is implemented using gettimeofday so it doesn't make much sense to
-dnl use it there...) On second thought, it seems to be safer to do it the
-dnl other way around. I.e. only use times() on OS's where we know it will
-dnl work...
-dnl
-
-AC_DEFUN(ERL_TIME_CORRECTION,
-[if test x$ac_cv_func_gethrtime = x; then
- AC_CHECK_FUNC(gethrtime)
-fi
-if test x$clock_gettime_correction = xunknown; then
- AC_TRY_COMPILE([#include <time.h>],
- [struct timespec ts;
- long long result;
- clock_gettime(CLOCK_MONOTONIC,&ts);
- result = ((long long) ts.tv_sec) * 1000000000LL +
- ((long long) ts.tv_nsec);],
- clock_gettime_compiles=yes,
- clock_gettime_compiles=no)
-else
- clock_gettime_compiles=no
-fi
-
-
-AC_CACHE_CHECK([how to correct for time adjustments], erl_cv_time_correction,
-[
-case $clock_gettime_correction in
- yes)
- erl_cv_time_correction=clock_gettime;;
- no|unknown)
- case $ac_cv_func_gethrtime in
- yes)
- erl_cv_time_correction=hrtime ;;
- no)
- case $host_os in
- linux*)
- case $clock_gettime_correction in
- unknown)
- if test x$clock_gettime_compiles = xyes; then
- if test X$cross_compiling != Xyes; then
- linux_kernel_vsn_=`uname -r`
- case $linux_kernel_vsn_ in
- [[0-1]].*|2.[[0-5]]|2.[[0-5]].*)
- erl_cv_time_correction=times ;;
- *)
- erl_cv_time_correction=clock_gettime;;
- esac
- else
- case X$erl_xcomp_linux_clock_gettime_correction in
- X)
- erl_cv_time_correction=cross;;
- Xyes|Xno)
- if test $erl_xcomp_linux_clock_gettime_correction = yes; then
- erl_cv_time_correction=clock_gettime
- else
- erl_cv_time_correction=times
- fi;;
- *)
- AC_MSG_ERROR([Bad erl_xcomp_linux_clock_gettime_correction value: $erl_xcomp_linux_clock_gettime_correction]);;
- esac
- fi
- else
- erl_cv_time_correction=times
- fi
- ;;
- *)
- erl_cv_time_correction=times ;;
- esac
- ;;
- *)
- erl_cv_time_correction=none ;;
- esac
- ;;
- esac
- ;;
-esac
-])
-
-xrtlib=""
-case $erl_cv_time_correction in
- times)
- AC_DEFINE(CORRECT_USING_TIMES,[],
- [Define if you do not have a high-res. timer & want to use times() instead])
- ;;
- clock_gettime|cross)
- if test $erl_cv_time_correction = cross; then
- erl_cv_time_correction=clock_gettime
- AC_MSG_WARN([result clock_gettime guessed because of cross compilation])
- fi
- xrtlib="-lrt"
- AC_DEFINE(GETHRTIME_WITH_CLOCK_GETTIME,[1],
- [Define if you want to use clock_gettime to simulate gethrtime])
- ;;
-esac
-dnl
-dnl Check if gethrvtime is working, and if to use procfs ioctl
-dnl or (yet to be written) write to the procfs ctl file.
-dnl
-
-AC_MSG_CHECKING([if gethrvtime works and how to use it])
-AC_TRY_RUN([
-/* gethrvtime procfs ioctl test */
-/* These need to be undef:ed to not break activation of
- * micro level process accounting on /proc/self
- */
-#ifdef _LARGEFILE_SOURCE
-# undef _LARGEFILE_SOURCE
-#endif
-#ifdef _FILE_OFFSET_BITS
-# undef _FILE_OFFSET_BITS
-#endif
-#include <stdlib.h>
-#include <unistd.h>
-#include <string.h>
-#include <stdio.h>
-#include <sys/time.h>
-#include <sys/types.h>
-#include <sys/stat.h>
-#include <sys/signal.h>
-#include <sys/fault.h>
-#include <sys/syscall.h>
-#include <sys/procfs.h>
-#include <fcntl.h>
-
-int main() {
- long msacct = PR_MSACCT;
- int fd;
- long long start, stop;
- int i;
- pid_t pid = getpid();
- char proc_self[30] = "/proc/";
-
- sprintf(proc_self+strlen(proc_self), "%lu", (unsigned long) pid);
- if ( (fd = open(proc_self, O_WRONLY)) == -1)
- exit(1);
- if (ioctl(fd, PIOCSET, &msacct) < 0)
- exit(2);
- if (close(fd) < 0)
- exit(3);
- start = gethrvtime();
- for (i = 0; i < 100; i++)
- stop = gethrvtime();
- if (start == 0)
- exit(4);
- if (start == stop)
- exit(5);
- exit(0); return 0;
-}
-],
-erl_gethrvtime=procfs_ioctl,
-erl_gethrvtime=false,
-[
-case X$erl_xcomp_gethrvtime_procfs_ioctl in
- X)
- erl_gethrvtime=cross;;
- Xyes|Xno)
- if test $erl_xcomp_gethrvtime_procfs_ioctl = yes; then
- erl_gethrvtime=procfs_ioctl
- else
- erl_gethrvtime=false
- fi;;
- *)
- AC_MSG_ERROR([Bad erl_xcomp_gethrvtime_procfs_ioctl value: $erl_xcomp_gethrvtime_procfs_ioctl]);;
-esac
-])
-
-case $erl_gethrvtime in
- procfs_ioctl)
- AC_DEFINE(HAVE_GETHRVTIME_PROCFS_IOCTL,[1],
- [define if gethrvtime() works and uses ioctl() to /proc/self])
- AC_MSG_RESULT(uses ioctl to procfs)
- ;;
- *)
- if test $erl_gethrvtime = cross; then
- erl_gethrvtime=false
- AC_MSG_RESULT(cross)
- AC_MSG_WARN([result 'not working' guessed because of cross compilation])
- else
- AC_MSG_RESULT(not working)
- fi
-
- dnl
- dnl Check if clock_gettime (linux) is working
- dnl
-
- AC_MSG_CHECKING([if clock_gettime can be used to get process CPU time])
- save_libs=$LIBS
- LIBS="-lrt"
- AC_TRY_RUN([
- #include <stdlib.h>
- #include <unistd.h>
- #include <string.h>
- #include <stdio.h>
- #include <time.h>
- int main() {
- long long start, stop;
- int i;
- struct timespec tp;
-
- if (clock_gettime(CLOCK_PROCESS_CPUTIME_ID, &tp) < 0)
- exit(1);
- start = ((long long)tp.tv_sec * 1000000000LL) + (long long)tp.tv_nsec;
- for (i = 0; i < 100; i++)
- clock_gettime(CLOCK_PROCESS_CPUTIME_ID, &tp);
- stop = ((long long)tp.tv_sec * 1000000000LL) + (long long)tp.tv_nsec;
- if (start == 0)
- exit(4);
- if (start == stop)
- exit(5);
- exit(0); return 0;
- }
- ],
- erl_clock_gettime=yes,
- erl_clock_gettime=no,
- [
- case X$erl_xcomp_clock_gettime_cpu_time in
- X) erl_clock_gettime=cross;;
- Xyes|Xno) erl_clock_gettime=$erl_xcomp_clock_gettime_cpu_time;;
- *) AC_MSG_ERROR([Bad erl_xcomp_clock_gettime_cpu_time value: $erl_xcomp_clock_gettime_cpu_time]);;
- esac
- ])
- LIBS=$save_libs
- case $host_os in
- linux*)
- AC_MSG_RESULT([no; not stable])
- LIBRT=$xrtlib
- ;;
- *)
- AC_MSG_RESULT($erl_clock_gettime)
- case $erl_clock_gettime in
- yes)
- AC_DEFINE(HAVE_CLOCK_GETTIME,[],
- [define if clock_gettime() works for getting process time])
- LIBRT=-lrt
- ;;
- cross)
- erl_clock_gettime=no
- AC_MSG_WARN([result no guessed because of cross compilation])
- LIBRT=$xrtlib
- ;;
- *)
- LIBRT=$xrtlib
- ;;
- esac
- ;;
- esac
- AC_SUBST(LIBRT)
- ;;
-esac
-])dnl
-
-dnl ----------------------------------------------------------------------
-dnl
-dnl LM_TRY_ENABLE_CFLAG
-dnl
-dnl
-dnl Tries a CFLAG and sees if it can be enabled without compiler errors
-dnl $1: textual cflag to add
-dnl $2: variable to store the modified CFLAG in
-dnl Usage example LM_TRY_ENABLE_CFLAG([-Werror=return-type], [CFLAGS])
-dnl
-dnl
-AC_DEFUN([LM_TRY_ENABLE_CFLAG], [
- AC_MSG_CHECKING([if we can add $1 to $2 (via CFLAGS)])
- saved_CFLAGS=$CFLAGS;
- CFLAGS="$1 $$2";
- AC_TRY_COMPILE([],[return 0;],can_enable_flag=true,can_enable_flag=false)
- CFLAGS=$saved_CFLAGS;
- if test "X$can_enable_flag" = "Xtrue"; then
- AC_MSG_RESULT([yes])
- AS_VAR_SET($2, "$1 $$2")
- else
- AC_MSG_RESULT([no])
- fi
-])
-
-dnl ERL_TRY_LINK_JAVA(CLASSES, FUNCTION-BODY
-dnl [ACTION_IF_FOUND [, ACTION-IF-NOT-FOUND]])
-dnl Freely inspired by AC_TRY_LINK. (Maybe better to create a
-dnl AC_LANG_JAVA instead...)
-AC_DEFUN(ERL_TRY_LINK_JAVA,
-[java_link='$JAVAC conftest.java 1>&AC_FD_CC'
-changequote(, )dnl
-cat > conftest.java <<EOF
-$1
-class conftest { public static void main(String[] args) {
- $2
- ; return; }}
-EOF
-changequote([, ])dnl
-if AC_TRY_EVAL(java_link) && test -s conftest.class; then
- ifelse([$3], , :, [rm -rf conftest*
- $3])
-else
- echo "configure: failed program was:" 1>&AC_FD_CC
- cat conftest.java 1>&AC_FD_CC
- echo "configure: PATH was $PATH" 1>&AC_FD_CC
-ifelse([$4], , , [ rm -rf conftest*
- $4
-])dnl
-fi
-rm -f conftest*])
-#define UNSAFE_MASK 0xc0000000 /* Mask for bits that must be constant */
-
-
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-07 02:54:38 +0000