From 8f7887d61604073528544ccb09849ca0e2f4df78 Mon Sep 17 00:00:00 2001 From: Ludovic Courtès Date: Wed, 12 Mar 2014 00:02:01 +0100 Subject: Provide glthread/lock.h implementation in terms of Guile threads. Fixes . Thanks to Paul Eggert for the suggestion. * m4/gnulib-cache.m4: Avoid 'lock' module. * m4/lock.m4, m4/threadlib.m4, lib/glthread/threadlib.c, lib/glthread/lock.c: Remove. * lib/glthread/lock.h: Rewrite in terms of libguile/threads.h. * m4/gnulib-common.m4, m4/gnulib-comp.m4, lib/Makefile.am, lib/unistd.in.h, maint.mk : Update, from Gnulib v0.1-92-g546ff82. * configure.ac (GNULIB_LOCK): Define 'GNULIB_LOCK'. Define 'USE_POSIX_THREADS' when building with pthread support. * Makefile.am (noinst_HEADERS): New variable. (BUILT_SOURCES): Add libguile/scmconfig.h. (libguile/scmconfig.h): New target. --- m4/gnulib-cache.m4 | 4 +- m4/gnulib-common.m4 | 56 ++++++++ m4/gnulib-comp.m4 | 12 +- m4/lock.m4 | 42 ------ m4/threadlib.m4 | 371 ---------------------------------------------------- 5 files changed, 59 insertions(+), 426 deletions(-) delete mode 100644 m4/lock.m4 delete mode 100644 m4/threadlib.m4 (limited to 'm4') diff --git a/m4/gnulib-cache.m4 b/m4/gnulib-cache.m4 index fc7391cda..9e095da7c 100644 --- a/m4/gnulib-cache.m4 +++ b/m4/gnulib-cache.m4 @@ -27,7 +27,7 @@ # Specification in the form of a command-line invocation: -# gnulib-tool --import --dir=. --local-dir=gnulib-local --lib=libgnu --source-base=lib --m4-base=m4 --doc-base=doc --tests-base=tests --aux-dir=build-aux --lgpl=3 --no-conditional-dependencies --libtool --macro-prefix=gl --no-vc-files accept alignof alloca-opt announce-gen autobuild bind byteswap c-strcase canonicalize-lgpl ceil clock-time close connect copysign dirfd duplocale environ extensions flock floor fpieee frexp fstat fsync full-read full-write func gendocs getaddrinfo getlogin getpeername getsockname getsockopt git-version-gen gitlog-to-changelog gnu-web-doc-update gnupload havelib iconv_open-utf inet_ntop inet_pton isfinite isinf isnan ldexp lib-symbol-versions lib-symbol-visibility libunistring link listen localcharset locale log1p lstat maintainer-makefile malloc-gnu malloca mkdir mkstemp nl_langinfo nproc open pipe-posix pipe2 poll putenv readlink recv recvfrom regex rename rmdir select send sendto setenv setsockopt shutdown socket stat-time stdlib strftime striconveh string sys_stat time times trunc unistd verify vsnprintf warnings wchar +# gnulib-tool --import --dir=. --local-dir=gnulib-local --lib=libgnu --source-base=lib --m4-base=m4 --doc-base=doc --tests-base=tests --aux-dir=build-aux --avoid=lock --lgpl=3 --no-conditional-dependencies --libtool --macro-prefix=gl --no-vc-files accept alignof alloca-opt announce-gen autobuild bind byteswap c-strcase canonicalize-lgpl ceil clock-time close connect copysign dirfd duplocale environ extensions flock floor fpieee frexp fstat fsync full-read full-write func gendocs getaddrinfo getlogin getpeername getsockname getsockopt git-version-gen gitlog-to-changelog gnu-web-doc-update gnupload havelib iconv_open-utf inet_ntop inet_pton isfinite isinf isnan ldexp lib-symbol-versions lib-symbol-visibility libunistring link listen localcharset locale log1p lstat maintainer-makefile malloc-gnu malloca mkdir mkstemp nl_langinfo nproc open pipe-posix pipe2 poll putenv readlink recv recvfrom regex rename rmdir select send sendto setenv setsockopt shutdown socket stat-time stdlib strftime striconveh string sys_stat time times trunc unistd verify vsnprintf warnings wchar # Specification in the form of a few gnulib-tool.m4 macro invocations: gl_LOCAL_DIR([gnulib-local]) @@ -126,7 +126,7 @@ gl_MODULES([ warnings wchar ]) -gl_AVOID([]) +gl_AVOID([lock]) gl_SOURCE_BASE([lib]) gl_M4_BASE([m4]) gl_PO_BASE([]) diff --git a/m4/gnulib-common.m4 b/m4/gnulib-common.m4 index 3b61b239b..20ce40e74 100644 --- a/m4/gnulib-common.m4 +++ b/m4/gnulib-common.m4 @@ -379,3 +379,59 @@ AC_DEFUN([gl_CACHE_VAL_SILENT], # AS_VAR_COPY was added in autoconf 2.63b m4_define_default([AS_VAR_COPY], [AS_LITERAL_IF([$1[]$2], [$1=$$2], [eval $1=\$$2])]) + +# AC_PROG_SED was added in autoconf 2.59b +m4_ifndef([AC_PROG_SED], +[AC_DEFUN([AC_PROG_SED], +[AC_CACHE_CHECK([for a sed that does not truncate output], ac_cv_path_SED, + [dnl ac_script should not contain more than 99 commands (for HP-UX sed), + dnl but more than about 7000 bytes, to catch a limit in Solaris 8 /usr/ucb/sed. + ac_script=s/aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa/bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb/ + for ac_i in 1 2 3 4 5 6 7; do + ac_script="$ac_script$as_nl$ac_script" + done + echo "$ac_script" 2>/dev/null | sed 99q >conftest.sed + AS_UNSET([ac_script]) + if test -z "$SED"; then + ac_path_SED_found=false + _AS_PATH_WALK([], [ + for ac_prog in sed gsed; do + for ac_exec_ext in '' $ac_executable_extensions; do + ac_path_SED="$as_dir/$ac_prog$ac_exec_ext" + AS_EXECUTABLE_P(["$ac_path_SED"]) || continue + case `"$ac_path_SED" --version 2>&1` in + *GNU*) ac_cv_path_SED=$ac_path_SED ac_path_SED_found=:;; + *) + ac_count=0 + _AS_ECHO_N([0123456789]) >conftest.in + while : + do + cat conftest.in conftest.in >conftest.tmp + mv conftest.tmp conftest.in + cp conftest.in conftest.nl + echo >> conftest.nl + "$ac_path_SED" -f conftest.sed conftest.out 2>/dev/null || break + diff conftest.out conftest.nl >/dev/null 2>&1 || break + ac_count=`expr $ac_count + 1` + if test $ac_count -gt ${ac_path_SED_max-0}; then + # Best so far, but keep looking for better + ac_cv_path_SED=$ac_path_SED + ac_path_SED_max=$ac_count + fi + test $ac_count -gt 10 && break + done + rm -f conftest.in conftest.tmp conftest.nl conftest.out;; + esac + $ac_path_SED_found && break 3 + done + done]) + if test -z "$ac_cv_path_SED"; then + AC_ERROR([no acceptable sed could be found in \$PATH]) + fi + else + ac_cv_path_SED=$SED + fi + SED="$ac_cv_path_SED" + AC_SUBST([SED])dnl + rm -f conftest.sed +])])]) diff --git a/m4/gnulib-comp.m4 b/m4/gnulib-comp.m4 index b333d6aed..429fee422 100644 --- a/m4/gnulib-comp.m4 +++ b/m4/gnulib-comp.m4 @@ -133,7 +133,6 @@ AC_DEFUN([gl_EARLY], # Code from module localcharset: # Code from module locale: # Code from module localeconv: - # Code from module lock: # Code from module log: # Code from module log1p: # Code from module lstat: @@ -219,8 +218,6 @@ AC_DEFUN([gl_EARLY], # Code from module sys_types: # Code from module sys_uio: # Code from module tempname: - # Code from module threadlib: - gl_THREADLIB_EARLY # Code from module time: # Code from module time_r: # Code from module times: @@ -529,8 +526,6 @@ AC_SUBST([LTALLOCA]) gl_PREREQ_LOCALECONV fi gl_LOCALE_MODULE_INDICATOR([localeconv]) - gl_LOCK - gl_MODULE_INDICATOR([lock]) AC_REQUIRE([gl_FUNC_LOG]) if test $REPLACE_LOG = 1; then AC_LIBOBJ([log]) @@ -549,6 +544,7 @@ AC_SUBST([LTALLOCA]) gl_SYS_STAT_MODULE_INDICATOR([lstat]) AC_CONFIG_COMMANDS_PRE([m4_ifdef([AH_HEADER], [AC_SUBST([CONFIG_INCLUDE], m4_defn([AH_HEADER]))])]) + AC_REQUIRE([AC_PROG_SED]) gl_FUNC_MALLOC_GNU if test $REPLACE_MALLOC = 1; then AC_LIBOBJ([malloc]) @@ -800,7 +796,6 @@ AC_SUBST([LTALLOCA]) gl_HEADER_SYS_UIO AC_PROG_MKDIR_P gl_FUNC_GEN_TEMPNAME - gl_THREADLIB gl_HEADER_TIME_H gl_TIME_R if test $HAVE_LOCALTIME_R = 0 || test $REPLACE_LOCALTIME_R = 1; then @@ -1054,9 +1049,6 @@ AC_DEFUN([gl_FILE_LIST], [ lib/getsockopt.c lib/gettext.h lib/gettimeofday.c - lib/glthread/lock.c - lib/glthread/lock.h - lib/glthread/threadlib.c lib/iconv.c lib/iconv.in.h lib/iconv_close.c @@ -1294,7 +1286,6 @@ AC_DEFUN([gl_FILE_LIST], [ m4/locale-zh.m4 m4/locale_h.m4 m4/localeconv.m4 - m4/lock.m4 m4/log.m4 m4/log1p.m4 m4/longlong.m4 @@ -1372,7 +1363,6 @@ AC_DEFUN([gl_FILE_LIST], [ m4/sys_types_h.m4 m4/sys_uio_h.m4 m4/tempname.m4 - m4/threadlib.m4 m4/time_h.m4 m4/time_r.m4 m4/times.m4 diff --git a/m4/lock.m4 b/m4/lock.m4 deleted file mode 100644 index 73a3c54ce..000000000 --- a/m4/lock.m4 +++ /dev/null @@ -1,42 +0,0 @@ -# lock.m4 serial 13 (gettext-0.18.2) -dnl Copyright (C) 2005-2014 Free Software Foundation, Inc. -dnl This file is free software; the Free Software Foundation -dnl gives unlimited permission to copy and/or distribute it, -dnl with or without modifications, as long as this notice is preserved. - -dnl From Bruno Haible. - -AC_DEFUN([gl_LOCK], -[ - AC_REQUIRE([gl_THREADLIB]) - if test "$gl_threads_api" = posix; then - # OSF/1 4.0 and Mac OS X 10.1 lack the pthread_rwlock_t type and the - # pthread_rwlock_* functions. - AC_CHECK_TYPE([pthread_rwlock_t], - [AC_DEFINE([HAVE_PTHREAD_RWLOCK], [1], - [Define if the POSIX multithreading library has read/write locks.])], - [], - [#include ]) - # glibc defines PTHREAD_MUTEX_RECURSIVE as enum, not as a macro. - AC_COMPILE_IFELSE([ - AC_LANG_PROGRAM( - [[#include ]], - [[ -#if __FreeBSD__ == 4 -error "No, in FreeBSD 4.0 recursive mutexes actually don't work." -#elif (defined __ENVIRONMENT_MAC_OS_X_VERSION_MIN_REQUIRED__ \ - && __ENVIRONMENT_MAC_OS_X_VERSION_MIN_REQUIRED__ < 1070) -error "No, in Mac OS X < 10.7 recursive mutexes actually don't work." -#else -int x = (int)PTHREAD_MUTEX_RECURSIVE; -return !x; -#endif - ]])], - [AC_DEFINE([HAVE_PTHREAD_MUTEX_RECURSIVE], [1], - [Define if the defines PTHREAD_MUTEX_RECURSIVE.])]) - fi - gl_PREREQ_LOCK -]) - -# Prerequisites of lib/glthread/lock.c. -AC_DEFUN([gl_PREREQ_LOCK], [:]) diff --git a/m4/threadlib.m4 b/m4/threadlib.m4 deleted file mode 100644 index a88170261..000000000 --- a/m4/threadlib.m4 +++ /dev/null @@ -1,371 +0,0 @@ -# threadlib.m4 serial 10 (gettext-0.18.2) -dnl Copyright (C) 2005-2014 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. - -dnl gl_THREADLIB -dnl ------------ -dnl Tests for a multithreading library to be used. -dnl If the configure.ac contains a definition of the gl_THREADLIB_DEFAULT_NO -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 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). -dnl Sets the variables LIBMULTITHREAD and LTLIBMULTITHREAD similarly, for -dnl programs that really need multithread functionality. The difference -dnl between LIBTHREAD and LIBMULTITHREAD is that on platforms supporting weak -dnl symbols, typically LIBTHREAD="" whereas LIBMULTITHREAD="-lpthread". -dnl Adds to CPPFLAGS the flag -D_REENTRANT or -D_THREAD_SAFE if needed for -dnl multithread-safe programs. - -AC_DEFUN([gl_THREADLIB_EARLY], -[ - AC_REQUIRE([gl_THREADLIB_EARLY_BODY]) -]) - -dnl The guts of gl_THREADLIB_EARLY. Needs to be expanded only once. - -AC_DEFUN([gl_THREADLIB_EARLY_BODY], -[ - dnl Ordering constraints: This macro modifies CPPFLAGS in a way that - dnl influences the result of the autoconf tests that test for *_unlocked - dnl declarations, on AIX 5 at least. Therefore it must come early. - AC_BEFORE([$0], [gl_FUNC_GLIBC_UNLOCKED_IO])dnl - AC_BEFORE([$0], [gl_ARGP])dnl - - AC_REQUIRE([AC_CANONICAL_HOST]) - dnl _GNU_SOURCE is needed for pthread_rwlock_t on glibc systems. - dnl AC_USE_SYSTEM_EXTENSIONS was introduced in autoconf 2.60 and obsoletes - dnl AC_GNU_SOURCE. - m4_ifdef([AC_USE_SYSTEM_EXTENSIONS], - [AC_REQUIRE([AC_USE_SYSTEM_EXTENSIONS])], - [AC_REQUIRE([AC_GNU_SOURCE])]) - dnl Check for multithreading. - m4_ifdef([gl_THREADLIB_DEFAULT_NO], - [m4_divert_text([DEFAULTS], [gl_use_threads_default=no])], - [m4_divert_text([DEFAULTS], [gl_use_threads_default=])]) - AC_ARG_ENABLE([threads], -AC_HELP_STRING([--enable-threads={posix|solaris|pth|windows}], [specify multithreading API])m4_ifdef([gl_THREADLIB_DEFAULT_NO], [], [ -AC_HELP_STRING([--disable-threads], [build without multithread safety])]), - [gl_use_threads=$enableval], - [if test -n "$gl_use_threads_default"; then - gl_use_threads="$gl_use_threads_default" - else -changequote(,)dnl - case "$host_os" in - dnl Disable multithreading by default on OSF/1, because it interferes - dnl with fork()/exec(): When msgexec is linked with -lpthread, its - dnl child process gets an endless segmentation fault inside execvp(). - dnl Disable multithreading by default on Cygwin 1.5.x, because it has - dnl bugs that lead to endless loops or crashes. See - dnl . - osf*) gl_use_threads=no ;; - cygwin*) - case `uname -r` in - 1.[0-5].*) gl_use_threads=no ;; - *) gl_use_threads=yes ;; - esac - ;; - *) gl_use_threads=yes ;; - esac -changequote([,])dnl - fi - ]) - if test "$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 - fi -]) - -dnl The guts of gl_THREADLIB. Needs to be expanded only once. - -AC_DEFUN([gl_THREADLIB_BODY], -[ - AC_REQUIRE([gl_THREADLIB_EARLY_BODY]) - gl_threads_api=none - LIBTHREAD= - LTLIBTHREAD= - LIBMULTITHREAD= - 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. - AC_LINK_IFELSE( - [AC_LANG_PROGRAM( - [[#include ]], - [[pthread_mutex_lock((pthread_mutex_t*)0); - pthread_mutexattr_init((pthread_mutexattr_t*)0);]])], - [gl_have_pthread=yes]) - # Test for libpthread by looking for pthread_kill. (Not pthread_self, - # since it is defined as a macro on OSF/1.) - if test -n "$gl_have_pthread"; then - # The program links fine without libpthread. But it may actually - # need to link with libpthread in order to create multiple threads. - AC_CHECK_LIB([pthread], [pthread_kill], - [LIBMULTITHREAD=-lpthread LTLIBMULTITHREAD=-lpthread - # On Solaris and HP-UX, most pthread functions exist also in libc. - # Therefore pthread_in_use() needs to actually try to create a - # thread: pthread_create from libc will fail, whereas - # pthread_create will actually create a thread. - case "$host_os" in - solaris* | hpux*) - AC_DEFINE([PTHREAD_IN_USE_DETECTION_HARD], [1], - [Define if the pthread_in_use() detection is hard.]) - esac - ]) - else - # 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_threads_api=posix - AC_DEFINE([USE_POSIX_THREADS], [1], - [Define if the POSIX multithreading library can be used.]) - if test -n "$LIBMULTITHREAD" || test -n "$LTLIBMULTITHREAD"; then - if case "$gl_cv_have_weak" in *yes) true;; *) false;; esac; then - AC_DEFINE([USE_POSIX_THREADS_WEAK], [1], - [Define if references to the POSIX multithreading library should be made weak.]) - LIBTHREAD= - LTLIBTHREAD= - fi - fi - fi - fi - fi - if test -z "$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 "$gl_cv_have_weak" in *yes) true;; *) false;; esac; then - AC_DEFINE([USE_SOLARIS_THREADS_WEAK], [1], - [Define if references to the old Solaris multithreading library should be made weak.]) - LIBTHREAD= - LTLIBTHREAD= - fi - fi - fi - fi - if test "$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 - case "$gl_use_threads" in - yes | windows | win32) # The 'win32' is for backward compatibility. - if { case "$host_os" in - mingw*) true;; - *) false;; - esac - }; then - gl_threads_api=windows - AC_DEFINE([USE_WINDOWS_THREADS], [1], - [Define if the native Windows multithreading API can be used.]) - fi - ;; - esac - fi - fi - AC_MSG_CHECKING([for multithread API to use]) - AC_MSG_RESULT([$gl_threads_api]) - AC_SUBST([LIBTHREAD]) - AC_SUBST([LTLIBTHREAD]) - AC_SUBST([LIBMULTITHREAD]) - AC_SUBST([LTLIBMULTITHREAD]) -]) - -AC_DEFUN([gl_THREADLIB], -[ - AC_REQUIRE([gl_THREADLIB_EARLY]) - AC_REQUIRE([gl_THREADLIB_BODY]) -]) - - -dnl gl_DISABLE_THREADS -dnl ------------------ -dnl Sets the gl_THREADLIB default so that threads are not used by default. -dnl The user can still override it at installation time, by using the -dnl configure option '--enable-threads'. - -AC_DEFUN([gl_DISABLE_THREADS], [ - m4_divert_text([INIT_PREPARE], [gl_use_threads_default=no]) -]) - - -dnl Survey of platforms: -dnl -dnl Platform Available Compiler Supports test-lock -dnl flavours option weak result -dnl --------------- --------- --------- -------- --------- -dnl Linux 2.4/glibc posix -lpthread Y OK -dnl -dnl GNU Hurd/glibc posix -dnl -dnl FreeBSD 5.3 posix -lc_r Y -dnl posix -lkse ? Y -dnl posix -lpthread ? Y -dnl posix -lthr Y -dnl -dnl FreeBSD 5.2 posix -lc_r Y -dnl posix -lkse Y -dnl posix -lthr Y -dnl -dnl FreeBSD 4.0,4.10 posix -lc_r Y OK -dnl -dnl NetBSD 1.6 -- -dnl -dnl OpenBSD 3.4 posix -lpthread Y OK -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) -dnl -dnl IRIX 6.5 posix -lpthread Y 0.5 -dnl -dnl AIX 4.3,5.1 posix -lpthread N AIX 4: 0.5; AIX 5: OK -dnl -dnl OSF/1 4.0,5.1 posix -pthread (cc) N OK -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 -- -dnl -dnl The test-lock result shows what happens if in test-lock.c EXPLICIT_YIELD is -dnl turned off: -dnl OK if all three tests terminate OK, -dnl 0.5 if the first test terminates OK but the second one loops endlessly, -dnl 0.0 if the first test already loops endlessly. -- cgit v1.2.3