X-Git-Url: http://git.efficios.com/?a=blobdiff_plain;ds=sidebyside;f=gnulib%2Fimport%2Fm4%2Fthreadlib.m4;h=96c74c18b300c79de6608e52beaa52ca536e02bb;hb=c0c3707ff46ccfb78ea175dd42d628d8c90dca8b;hp=b43534ea278493cb78eb75d716fc44ff5a206834;hpb=f81e7e2db6d1aaf47561e54356aee12b585533c2;p=deliverable%2Fbinutils-gdb.git diff --git a/gnulib/import/m4/threadlib.m4 b/gnulib/import/m4/threadlib.m4 index b43534ea27..96c74c18b3 100644 --- a/gnulib/import/m4/threadlib.m4 +++ b/gnulib/import/m4/threadlib.m4 @@ -1,11 +1,26 @@ -# threadlib.m4 serial 11 (gettext-0.18.2) -dnl Copyright (C) 2005-2016 Free Software Foundation, Inc. +# threadlib.m4 serial 24 +dnl Copyright (C) 2005-2019 Free Software Foundation, Inc. dnl This file is free software; the Free Software Foundation dnl gives unlimited permission to copy and/or distribute it, dnl with or without modifications, as long as this notice is preserved. dnl From Bruno Haible. +AC_PREREQ([2.60]) + +dnl gl_PTHREADLIB +dnl ------------- +dnl Tests for the libraries needs for using the POSIX threads API. +dnl Sets the variable LIBPTHREAD to the linker options for use in a Makefile. +dnl Sets the variable LIBPMULTITHREAD, for programs that really need +dnl multithread functionality. The difference between LIBPTHREAD and +dnl LIBPMULTITHREAD is that on platforms supporting weak symbols, typically +dnl LIBPTHREAD is empty whereas LIBPMULTITHREAD is not. +dnl Adds to CPPFLAGS the flag -D_REENTRANT or -D_THREAD_SAFE if needed for +dnl multithread-safe programs. +dnl Defines the C macro HAVE_PTHREAD_API if (at least parts of) the POSIX +dnl threads API is available. + dnl gl_THREADLIB dnl ------------ dnl Tests for a multithreading library to be used. @@ -14,8 +29,13 @@ dnl (it must be placed before the invocation of gl_THREADLIB_EARLY!), then the dnl default is 'no', otherwise it is system dependent. In both cases, the user dnl can change the choice through the options --enable-threads=choice or dnl --disable-threads. -dnl Defines at most one of the macros USE_POSIX_THREADS, USE_SOLARIS_THREADS, -dnl USE_PTH_THREADS, USE_WINDOWS_THREADS +dnl Defines at most one of the macros USE_ISOC_THREADS, USE_POSIX_THREADS, +dnl USE_ISOC_AND_POSIX_THREADS, USE_WINDOWS_THREADS. +dnl The choice --enable-threads=isoc+posix is available only on platforms that +dnl have both the ISO C and the POSIX threads APIs. It has the effect of using +dnl the ISO C API for most things and the POSIX API only for creating and +dnl controlling threads (because there is no equivalent to pthread_atfork in +dnl the ISO C API). dnl Sets the variables LIBTHREAD and LTLIBTHREAD to the linker options for use dnl in a Makefile (LIBTHREAD for use without libtool, LTLIBTHREAD for use with dnl libtool). @@ -25,6 +45,35 @@ dnl between LIBTHREAD and LIBMULTITHREAD is that on platforms supporting weak dnl symbols, typically LIBTHREAD is empty whereas LIBMULTITHREAD is not. dnl Adds to CPPFLAGS the flag -D_REENTRANT or -D_THREAD_SAFE if needed for dnl multithread-safe programs. +dnl Since support for GNU pth was removed, $LTLIBTHREAD and $LIBTHREAD have the +dnl same value, and similarly $LTLIBMULTITHREAD and $LIBMULTITHREAD have the +dnl same value. Only system libraries are needed. + +AC_DEFUN([gl_ANYTHREADLIB_EARLY], +[ + AC_REQUIRE([AC_CANONICAL_HOST]) + if test -z "$gl_anythreadlib_early_done"; then + case "$host_os" in + osf*) + # On OSF/1, the compiler needs the flag -D_REENTRANT so that it + # groks . cc also understands the flag -pthread, but + # we don't use it because 1. gcc-2.95 doesn't understand -pthread, + # 2. putting a flag into CPPFLAGS that has an effect on the linker + # causes the AC_LINK_IFELSE test below to succeed unexpectedly, + # leading to wrong values of LIBTHREAD and LTLIBTHREAD. + CPPFLAGS="$CPPFLAGS -D_REENTRANT" + ;; + esac + # Some systems optimize for single-threaded programs by default, and + # need special flags to disable these optimizations. For example, the + # definition of 'errno' in . + case "$host_os" in + aix* | freebsd*) CPPFLAGS="$CPPFLAGS -D_THREAD_SAFE" ;; + solaris*) CPPFLAGS="$CPPFLAGS -D_REENTRANT" ;; + esac + gl_anythreadlib_early_done=done + fi +]) AC_DEFUN([gl_THREADLIB_EARLY], [ @@ -43,17 +92,14 @@ AC_DEFUN([gl_THREADLIB_EARLY_BODY], AC_REQUIRE([AC_CANONICAL_HOST]) dnl _GNU_SOURCE is needed for pthread_rwlock_t on glibc systems. - dnl AC_USE_SYSTEM_EXTENSIONS was introduced in autoconf 2.60 and obsoletes - dnl AC_GNU_SOURCE. - m4_ifdef([AC_USE_SYSTEM_EXTENSIONS], - [AC_REQUIRE([AC_USE_SYSTEM_EXTENSIONS])], - [AC_REQUIRE([AC_GNU_SOURCE])]) + AC_REQUIRE([AC_USE_SYSTEM_EXTENSIONS]) dnl Check for multithreading. m4_ifdef([gl_THREADLIB_DEFAULT_NO], [m4_divert_text([DEFAULTS], [gl_use_threads_default=no])], [m4_divert_text([DEFAULTS], [gl_use_threads_default=])]) + m4_divert_text([DEFAULTS], [gl_use_winpthreads_default=]) AC_ARG_ENABLE([threads], -AC_HELP_STRING([--enable-threads={posix|solaris|pth|windows}], [specify multithreading API])m4_ifdef([gl_THREADLIB_DEFAULT_NO], [], [ +AC_HELP_STRING([--enable-threads={isoc|posix|isoc+posix|windows}], [specify multithreading API])m4_ifdef([gl_THREADLIB_DEFAULT_NO], [], [ AC_HELP_STRING([--disable-threads], [build without multithread safety])]), [gl_use_threads=$enableval], [if test -n "$gl_use_threads_default"; then @@ -64,41 +110,174 @@ changequote(,)dnl dnl Disable multithreading by default on OSF/1, because it interferes dnl with fork()/exec(): When msgexec is linked with -lpthread, its dnl child process gets an endless segmentation fault inside execvp(). + osf*) gl_use_threads=no ;; dnl Disable multithreading by default on Cygwin 1.5.x, because it has dnl bugs that lead to endless loops or crashes. See - dnl . - osf*) gl_use_threads=no ;; + dnl . cygwin*) case `uname -r` in 1.[0-5].*) gl_use_threads=no ;; *) gl_use_threads=yes ;; esac ;; + dnl Obey gl_AVOID_WINPTHREAD on mingw. + mingw*) + case "$gl_use_winpthreads_default" in + yes) gl_use_threads=posix ;; + no) gl_use_threads=windows ;; + *) gl_use_threads=yes ;; + esac + ;; *) gl_use_threads=yes ;; esac changequote([,])dnl fi ]) - if test "$gl_use_threads" = yes || test "$gl_use_threads" = posix; then - # For using : - case "$host_os" in - osf*) - # On OSF/1, the compiler needs the flag -D_REENTRANT so that it - # groks . cc also understands the flag -pthread, but - # we don't use it because 1. gcc-2.95 doesn't understand -pthread, - # 2. putting a flag into CPPFLAGS that has an effect on the linker - # causes the AC_LINK_IFELSE test below to succeed unexpectedly, - # leading to wrong values of LIBTHREAD and LTLIBTHREAD. - CPPFLAGS="$CPPFLAGS -D_REENTRANT" - ;; - esac - # Some systems optimize for single-threaded programs by default, and - # need special flags to disable these optimizations. For example, the - # definition of 'errno' in . - case "$host_os" in - aix* | freebsd*) CPPFLAGS="$CPPFLAGS -D_THREAD_SAFE" ;; - solaris*) CPPFLAGS="$CPPFLAGS -D_REENTRANT" ;; - esac + if test "$gl_use_threads" = yes \ + || test "$gl_use_threads" = isoc \ + || test "$gl_use_threads" = posix \ + || test "$gl_use_threads" = isoc+posix; then + # For using or : + gl_ANYTHREADLIB_EARLY + fi +]) + +dnl Checks whether the compiler and linker support weak declarations of symbols. + +AC_DEFUN([gl_WEAK_SYMBOLS], +[ + AC_CACHE_CHECK([whether imported symbols can be declared weak], + [gl_cv_have_weak], + [gl_cv_have_weak=no + dnl First, test whether the compiler accepts it syntactically. + AC_LINK_IFELSE( + [AC_LANG_PROGRAM( + [[extern void xyzzy (); +#pragma weak xyzzy]], + [[xyzzy();]])], + [gl_cv_have_weak=maybe]) + if test $gl_cv_have_weak = maybe; then + dnl Second, test whether it actually works. On Cygwin 1.7.2, with + dnl gcc 4.3, symbols declared weak always evaluate to the address 0. + AC_RUN_IFELSE( + [AC_LANG_SOURCE([[ +#include +#pragma weak fputs +int main () +{ + return (fputs == NULL); +}]])], + [gl_cv_have_weak=yes], + [gl_cv_have_weak=no], + [dnl When cross-compiling, assume that only ELF platforms support + dnl weak symbols. + AC_EGREP_CPP([Extensible Linking Format], + [#ifdef __ELF__ + Extensible Linking Format + #endif + ], + [gl_cv_have_weak="guessing yes"], + [gl_cv_have_weak="guessing no"]) + ]) + fi + dnl But when linking statically, weak symbols don't work. + case " $LDFLAGS " in + *" -static "*) gl_cv_have_weak=no ;; + esac + ]) + case "$gl_cv_have_weak" in + *yes) + AC_DEFINE([HAVE_WEAK_SYMBOLS], [1], + [Define to 1 if the compiler and linker support weak declarations of symbols.]) + ;; + esac +]) + +dnl The guts of gl_PTHREADLIB. Needs to be expanded only once. + +AC_DEFUN([gl_PTHREADLIB_BODY], +[ + AC_REQUIRE([gl_ANYTHREADLIB_EARLY]) + if test -z "$gl_threadlib_body_done"; then + gl_pthread_api=no + LIBPTHREAD= + LIBPMULTITHREAD= + # On OSF/1, the compiler needs the flag -pthread or -D_REENTRANT so that + # it groks . It's added above, in gl_ANYTHREADLIB_EARLY. + AC_CHECK_HEADER([pthread.h], + [gl_have_pthread_h=yes], [gl_have_pthread_h=no]) + if test "$gl_have_pthread_h" = yes; then + # Other possible tests: + # -lpthreads (FSU threads, PCthreads) + # -lgthreads + # Test whether both pthread_mutex_lock and pthread_mutexattr_init exist + # in libc. IRIX 6.5 has the first one in both libc and libpthread, but + # the second one only in libpthread, and lock.c needs it. + # + # If -pthread works, prefer it to -lpthread, since Ubuntu 14.04 + # needs -pthread for some reason. See: + # https://lists.gnu.org/r/bug-gnulib/2014-09/msg00023.html + save_LIBS=$LIBS + for gl_pthread in '' '-pthread'; do + LIBS="$LIBS $gl_pthread" + AC_LINK_IFELSE( + [AC_LANG_PROGRAM( + [[#include + pthread_mutex_t m; + pthread_mutexattr_t ma; + ]], + [[pthread_mutex_lock (&m); + pthread_mutexattr_init (&ma);]])], + [gl_pthread_api=yes + LIBPTHREAD=$gl_pthread + LIBPMULTITHREAD=$gl_pthread]) + LIBS=$save_LIBS + test $gl_pthread_api = yes && break + done + + # Test for libpthread by looking for pthread_kill. (Not pthread_self, + # since it is defined as a macro on OSF/1.) + if test $gl_pthread_api = yes && test -z "$LIBPTHREAD"; then + # The program links fine without libpthread. But it may actually + # need to link with libpthread in order to create multiple threads. + AC_CHECK_LIB([pthread], [pthread_kill], + [LIBPMULTITHREAD=-lpthread + # On Solaris and HP-UX, most pthread functions exist also in libc. + # Therefore pthread_in_use() needs to actually try to create a + # thread: pthread_create from libc will fail, whereas + # pthread_create will actually create a thread. + # On Solaris 10 or newer, this test is no longer needed, because + # libc contains the fully functional pthread functions. + case "$host_os" in + solaris | solaris2.[1-9] | solaris2.[1-9].* | hpux*) + AC_DEFINE([PTHREAD_IN_USE_DETECTION_HARD], [1], + [Define if the pthread_in_use() detection is hard.]) + esac + ]) + elif test $gl_pthread_api != yes; then + # Some library is needed. Try libpthread and libc_r. + AC_CHECK_LIB([pthread], [pthread_kill], + [gl_pthread_api=yes + LIBPTHREAD=-lpthread + LIBPMULTITHREAD=-lpthread]) + if test $gl_pthread_api != yes; then + # For FreeBSD 4. + AC_CHECK_LIB([c_r], [pthread_kill], + [gl_pthread_api=yes + LIBPTHREAD=-lc_r + LIBPMULTITHREAD=-lc_r]) + fi + fi + fi + AC_MSG_CHECKING([whether POSIX threads API is available]) + AC_MSG_RESULT([$gl_pthread_api]) + AC_SUBST([LIBPTHREAD]) + AC_SUBST([LIBPMULTITHREAD]) + if test $gl_pthread_api = yes; then + AC_DEFINE([HAVE_PTHREAD_API], [1], + [Define if you have the header and the POSIX threads API.]) + fi + gl_threadlib_body_done=done fi ]) @@ -114,108 +293,44 @@ AC_DEFUN([gl_THREADLIB_BODY], LTLIBMULTITHREAD= if test "$gl_use_threads" != no; then dnl Check whether the compiler and linker support weak declarations. - AC_CACHE_CHECK([whether imported symbols can be declared weak], - [gl_cv_have_weak], - [gl_cv_have_weak=no - dnl First, test whether the compiler accepts it syntactically. - AC_LINK_IFELSE( - [AC_LANG_PROGRAM( - [[extern void xyzzy (); -#pragma weak xyzzy]], - [[xyzzy();]])], - [gl_cv_have_weak=maybe]) - if test $gl_cv_have_weak = maybe; then - dnl Second, test whether it actually works. On Cygwin 1.7.2, with - dnl gcc 4.3, symbols declared weak always evaluate to the address 0. - AC_RUN_IFELSE( - [AC_LANG_SOURCE([[ -#include -#pragma weak fputs -int main () -{ - return (fputs == NULL); -}]])], - [gl_cv_have_weak=yes], - [gl_cv_have_weak=no], - [dnl When cross-compiling, assume that only ELF platforms support - dnl weak symbols. - AC_EGREP_CPP([Extensible Linking Format], - [#ifdef __ELF__ - Extensible Linking Format - #endif - ], - [gl_cv_have_weak="guessing yes"], - [gl_cv_have_weak="guessing no"]) - ]) - fi - ]) - if test "$gl_use_threads" = yes || test "$gl_use_threads" = posix; then - # On OSF/1, the compiler needs the flag -pthread or -D_REENTRANT so that - # it groks . It's added above, in gl_THREADLIB_EARLY_BODY. - AC_CHECK_HEADER([pthread.h], - [gl_have_pthread_h=yes], [gl_have_pthread_h=no]) - if test "$gl_have_pthread_h" = yes; then - # Other possible tests: - # -lpthreads (FSU threads, PCthreads) - # -lgthreads - gl_have_pthread= - # Test whether both pthread_mutex_lock and pthread_mutexattr_init exist - # in libc. IRIX 6.5 has the first one in both libc and libpthread, but - # the second one only in libpthread, and lock.c needs it. - # - # If -pthread works, prefer it to -lpthread, since Ubuntu 14.04 - # needs -pthread for some reason. See: - # http://lists.gnu.org/archive/html/bug-gnulib/2014-09/msg00023.html - save_LIBS=$LIBS - for gl_pthread in '' '-pthread'; do - LIBS="$LIBS $gl_pthread" - AC_LINK_IFELSE( - [AC_LANG_PROGRAM( - [[#include - pthread_mutex_t m; - pthread_mutexattr_t ma; - ]], - [[pthread_mutex_lock (&m); - pthread_mutexattr_init (&ma);]])], - [gl_have_pthread=yes - LIBTHREAD=$gl_pthread LTLIBTHREAD=$gl_pthread - LIBMULTITHREAD=$gl_pthread LTLIBMULTITHREAD=$gl_pthread]) - LIBS=$save_LIBS - test -n "$gl_have_pthread" && break - done - - # Test for libpthread by looking for pthread_kill. (Not pthread_self, - # since it is defined as a macro on OSF/1.) - if test -n "$gl_have_pthread" && test -z "$LIBTHREAD"; then - # The program links fine without libpthread. But it may actually - # need to link with libpthread in order to create multiple threads. - AC_CHECK_LIB([pthread], [pthread_kill], - [LIBMULTITHREAD=-lpthread LTLIBMULTITHREAD=-lpthread - # On Solaris and HP-UX, most pthread functions exist also in libc. - # Therefore pthread_in_use() needs to actually try to create a - # thread: pthread_create from libc will fail, whereas - # pthread_create will actually create a thread. - case "$host_os" in - solaris* | hpux*) - AC_DEFINE([PTHREAD_IN_USE_DETECTION_HARD], [1], - [Define if the pthread_in_use() detection is hard.]) - esac - ]) - elif test -z "$gl_have_pthread"; then - # Some library is needed. Try libpthread and libc_r. - AC_CHECK_LIB([pthread], [pthread_kill], - [gl_have_pthread=yes - LIBTHREAD=-lpthread LTLIBTHREAD=-lpthread - LIBMULTITHREAD=-lpthread LTLIBMULTITHREAD=-lpthread]) - if test -z "$gl_have_pthread"; then - # For FreeBSD 4. - AC_CHECK_LIB([c_r], [pthread_kill], - [gl_have_pthread=yes - LIBTHREAD=-lc_r LTLIBTHREAD=-lc_r - LIBMULTITHREAD=-lc_r LTLIBMULTITHREAD=-lc_r]) - fi - fi - if test -n "$gl_have_pthread"; then + gl_WEAK_SYMBOLS + if case "$gl_cv_have_weak" in *yes) true;; *) false;; esac; then + dnl If we use weak symbols to implement pthread_in_use / pth_in_use / + dnl thread_in_use, we also need to test whether the ISO C 11 thrd_create + dnl facility is in use. + AC_CHECK_HEADERS_ONCE([threads.h]) + : + fi + if test "$gl_use_threads" = isoc || test "$gl_use_threads" = isoc+posix; then + AC_CHECK_HEADERS_ONCE([threads.h]) + if test $ac_cv_header_threads_h = yes; then + gl_have_isoc_threads= + # Test whether both mtx_lock and cnd_timedwait exist in libc. + AC_LINK_IFELSE( + [AC_LANG_PROGRAM( + [[#include + #include + mtx_t m; + cnd_t c; + ]], + [[mtx_lock (&m); + cnd_timedwait (&c, &m, NULL);]])], + [gl_have_isoc_threads=yes]) + fi + fi + if test "$gl_use_threads" = yes \ + || test "$gl_use_threads" = posix \ + || test "$gl_use_threads" = isoc+posix; then + gl_PTHREADLIB_BODY + LIBTHREAD=$LIBPTHREAD LTLIBTHREAD=$LIBPTHREAD + LIBMULTITHREAD=$LIBPMULTITHREAD LTLIBMULTITHREAD=$LIBPMULTITHREAD + if test $gl_pthread_api = yes; then + if test "$gl_use_threads" = isoc+posix && test "$gl_have_isoc_threads" = yes; then + gl_threads_api='isoc+posix' + AC_DEFINE([USE_ISOC_AND_POSIX_THREADS], [1], + [Define if the combination of the ISO C and POSIX multithreading APIs can be used.]) + LIBTHREAD= LTLIBTHREAD= + else gl_threads_api=posix AC_DEFINE([USE_POSIX_THREADS], [1], [Define if the POSIX multithreading library can be used.]) @@ -223,75 +338,20 @@ int main () if case "$gl_cv_have_weak" in *yes) true;; *) false;; esac; then AC_DEFINE([USE_POSIX_THREADS_WEAK], [1], [Define if references to the POSIX multithreading library should be made weak.]) - LIBTHREAD= - LTLIBTHREAD= + LIBTHREAD= LTLIBTHREAD= fi fi fi fi fi - if test -z "$gl_have_pthread"; then - if test "$gl_use_threads" = yes || test "$gl_use_threads" = solaris; then - gl_have_solaristhread= - gl_save_LIBS="$LIBS" - LIBS="$LIBS -lthread" - AC_LINK_IFELSE( - [AC_LANG_PROGRAM( - [[ -#include -#include - ]], - [[thr_self();]])], - [gl_have_solaristhread=yes]) - LIBS="$gl_save_LIBS" - if test -n "$gl_have_solaristhread"; then - gl_threads_api=solaris - LIBTHREAD=-lthread - LTLIBTHREAD=-lthread - LIBMULTITHREAD="$LIBTHREAD" - LTLIBMULTITHREAD="$LTLIBTHREAD" - AC_DEFINE([USE_SOLARIS_THREADS], [1], - [Define if the old Solaris multithreading library can be used.]) - if case "$gl_cv_have_weak" in *yes) true;; *) false;; esac; then - AC_DEFINE([USE_SOLARIS_THREADS_WEAK], [1], - [Define if references to the old Solaris multithreading library should be made weak.]) - LIBTHREAD= - LTLIBTHREAD= - fi - fi + if test $gl_threads_api = none; then + if test "$gl_use_threads" = isoc && test "$gl_have_isoc_threads" = yes; then + gl_threads_api=isoc + AC_DEFINE([USE_ISOC_THREADS], [1], + [Define if the ISO C multithreading library can be used.]) fi fi - if test "$gl_use_threads" = pth; then - gl_save_CPPFLAGS="$CPPFLAGS" - AC_LIB_LINKFLAGS([pth]) - gl_have_pth= - gl_save_LIBS="$LIBS" - LIBS="$LIBS $LIBPTH" - AC_LINK_IFELSE( - [AC_LANG_PROGRAM([[#include ]], [[pth_self();]])], - [gl_have_pth=yes]) - LIBS="$gl_save_LIBS" - if test -n "$gl_have_pth"; then - gl_threads_api=pth - LIBTHREAD="$LIBPTH" - LTLIBTHREAD="$LTLIBPTH" - LIBMULTITHREAD="$LIBTHREAD" - LTLIBMULTITHREAD="$LTLIBTHREAD" - AC_DEFINE([USE_PTH_THREADS], [1], - [Define if the GNU Pth multithreading library can be used.]) - if test -n "$LIBMULTITHREAD" || test -n "$LTLIBMULTITHREAD"; then - if case "$gl_cv_have_weak" in *yes) true;; *) false;; esac; then - AC_DEFINE([USE_PTH_THREADS_WEAK], [1], - [Define if references to the GNU Pth multithreading library should be made weak.]) - LIBTHREAD= - LTLIBTHREAD= - fi - fi - else - CPPFLAGS="$gl_save_CPPFLAGS" - fi - fi - if test -z "$gl_have_pthread"; then + if test $gl_threads_api = none; then case "$gl_use_threads" in yes | windows | win32) # The 'win32' is for backward compatibility. if { case "$host_os" in @@ -315,6 +375,12 @@ int main () AC_SUBST([LTLIBMULTITHREAD]) ]) +AC_DEFUN([gl_PTHREADLIB], +[ + AC_REQUIRE([gl_ANYTHREADLIB_EARLY]) + gl_PTHREADLIB_BODY +]) + AC_DEFUN([gl_THREADLIB], [ AC_REQUIRE([gl_THREADLIB_EARLY]) @@ -333,6 +399,18 @@ AC_DEFUN([gl_DISABLE_THREADS], [ ]) +dnl gl_AVOID_WINPTHREAD +dnl ------------------- +dnl Sets the gl_THREADLIB default so that on mingw, a dependency to the +dnl libwinpthread DLL (mingw-w64 winpthreads library) is avoided. +dnl The user can still override it at installation time, by using the +dnl configure option '--enable-threads'. + +AC_DEFUN([gl_AVOID_WINPTHREAD], [ + m4_divert_text([INIT_PREPARE], [gl_use_winpthreads_default=no]) +]) + + dnl Survey of platforms: dnl dnl Platform Available Compiler Supports test-lock @@ -362,7 +440,6 @@ dnl dnl Mac OS X 10.[123] posix -lpthread Y OK dnl dnl Solaris 7,8,9 posix -lpthread Y Sol 7,8: 0.0; Sol 9: OK -dnl solaris -lthread Y Sol 7,8: 0.0; Sol 9: OK dnl dnl HP-UX 11 posix -lpthread N (cc) OK dnl Y (gcc) @@ -376,8 +453,6 @@ dnl -lpthread (gcc) Y dnl dnl Cygwin posix -lpthread Y OK dnl -dnl Any of the above pth -lpth 0.0 -dnl dnl Mingw windows N OK dnl dnl BeOS 5 --