From 55f83d9ecf12aa7232ed457494681ceb97e301ae Mon Sep 17 00:00:00 2001 From: Rickard Green Date: Tue, 2 Dec 2014 21:44:14 +0100 Subject: Distribute autoconf helpers Distribute aclocal.m4, install-sh, config.guess, and config.sub to applications at build time instead of having multiple identical copies committed in the repository. --- lib/megaco/aclocal.m4 | 1976 ------------------------------------------------- 1 file changed, 1976 deletions(-) delete mode 100644 lib/megaco/aclocal.m4 (limited to 'lib/megaco/aclocal.m4') diff --git a/lib/megaco/aclocal.m4 b/lib/megaco/aclocal.m4 deleted file mode 100644 index d78025b0be..0000000000 --- a/lib/megaco/aclocal.m4 +++ /dev/null @@ -1,1976 +0,0 @@ -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 `-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 `-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 ], [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 -#include ], [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 ], - [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 ], - [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 -#include ], [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 ], - [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 -#ifdef __WIN32__ -#include -#include -#elif __OSE__ -#error "no ipv6" -#else -#include -#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 -#ifdef __WIN32__ -#include -#include -#elif __OSE__ -#error "no ipv6" -#else -#include -#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 -#include -#include -#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 -#include ], [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 -$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 - -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_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 header file.])) - - dnl Some Linuxes have instead of - 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 - #include - ], - [ - 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 header file.])) - - dnl Some Linuxes have instead of - 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 header file.]) - fi - - AC_CHECK_HEADER(sched.h, \ - AC_DEFINE(ETHR_HAVE_SCHED_H, 1, \ -[Define if you have the header file.])) - - AC_CHECK_HEADER(sys/time.h, \ - AC_DEFINE(ETHR_HAVE_SYS_TIME_H, 1, \ -[Define if you have the header file.])) - - AC_TRY_COMPILE([#include - #include ], - [struct timeval *tv; return 0;], - AC_DEFINE(ETHR_TIME_WITH_SYS_TIME, 1, \ -[Define if you can safely include both and .])) - - - 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 - #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 - #elif defined(ETHR_HAVE_MIT_PTHREAD_H) - #include - #elif defined(ETHR_HAVE_PTHREAD_H) - #include - #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 - #elif defined(ETHR_HAVE_MIT_PTHREAD_H) - #include - #elif defined(ETHR_HAVE_PTHREAD_H) - #include - #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 - #include - #include - #include - ], - [ - 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 - #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 ], - [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 -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include - -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 - #include - #include - #include - #include - 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 <&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 */ - - -- cgit v1.2.3