Update ax_pthread.m4 to latest upstream version
Might help with https://github.com/behdad/harfbuzz/issues/399
This commit is contained in:
Behdad Esfahbod
parent
a6ced90efc
commit
09594df1ae
374
m4/ax_pthread.m4
374
m4/ax_pthread.m4
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@ -19,10 +19,10 @@
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# is necessary on AIX to use the special cc_r compiler alias.)
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#
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# NOTE: You are assumed to not only compile your program with these flags,
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# but also link it with them as well. e.g. you should link with
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# but also to link with them as well. For example, you might link with
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# $PTHREAD_CC $CFLAGS $PTHREAD_CFLAGS $LDFLAGS ... $PTHREAD_LIBS $LIBS
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#
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# If you are only building threads programs, you may wish to use these
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# If you are only building threaded programs, you may wish to use these
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# variables in your default LIBS, CFLAGS, and CC:
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#
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# LIBS="$PTHREAD_LIBS $LIBS"
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@ -30,8 +30,8 @@
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# CC="$PTHREAD_CC"
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#
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# In addition, if the PTHREAD_CREATE_JOINABLE thread-attribute constant
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# has a nonstandard name, defines PTHREAD_CREATE_JOINABLE to that name
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# (e.g. PTHREAD_CREATE_UNDETACHED on AIX).
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# has a nonstandard name, this macro defines PTHREAD_CREATE_JOINABLE to
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# that name (e.g. PTHREAD_CREATE_UNDETACHED on AIX).
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#
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# Also HAVE_PTHREAD_PRIO_INHERIT is defined if pthread is found and the
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# PTHREAD_PRIO_INHERIT symbol is defined when compiling with
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@ -82,35 +82,40 @@
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# modified version of the Autoconf Macro, you may extend this special
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# exception to the GPL to apply to your modified version as well.
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#serial 18
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#serial 23
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AU_ALIAS([ACX_PTHREAD], [AX_PTHREAD])
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AC_DEFUN([AX_PTHREAD], [
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AC_REQUIRE([AC_CANONICAL_HOST])
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AC_REQUIRE([AC_PROG_CC])
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AC_REQUIRE([AC_PROG_SED])
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AC_LANG_PUSH([C])
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ax_pthread_ok=no
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# We used to check for pthread.h first, but this fails if pthread.h
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# requires special compiler flags (e.g. on True64 or Sequent).
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# requires special compiler flags (e.g. on Tru64 or Sequent).
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# It gets checked for in the link test anyway.
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# First of all, check if the user has set any of the PTHREAD_LIBS,
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# etcetera environment variables, and if threads linking works using
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# them:
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if test x"$PTHREAD_LIBS$PTHREAD_CFLAGS" != x; then
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save_CFLAGS="$CFLAGS"
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if test "x$PTHREAD_CFLAGS$PTHREAD_LIBS" != "x"; then
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ax_pthread_save_CC="$CC"
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ax_pthread_save_CFLAGS="$CFLAGS"
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ax_pthread_save_LIBS="$LIBS"
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AS_IF([test "x$PTHREAD_CC" != "x"], [CC="$PTHREAD_CC"])
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CFLAGS="$CFLAGS $PTHREAD_CFLAGS"
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save_LIBS="$LIBS"
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LIBS="$PTHREAD_LIBS $LIBS"
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AC_MSG_CHECKING([for pthread_join in LIBS=$PTHREAD_LIBS with CFLAGS=$PTHREAD_CFLAGS])
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AC_TRY_LINK_FUNC(pthread_join, ax_pthread_ok=yes)
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AC_MSG_RESULT($ax_pthread_ok)
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if test x"$ax_pthread_ok" = xno; then
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AC_MSG_CHECKING([for pthread_join using $CC $PTHREAD_CFLAGS $PTHREAD_LIBS])
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AC_LINK_IFELSE([AC_LANG_CALL([], [pthread_join])], [ax_pthread_ok=yes])
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AC_MSG_RESULT([$ax_pthread_ok])
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if test "x$ax_pthread_ok" = "xno"; then
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PTHREAD_LIBS=""
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PTHREAD_CFLAGS=""
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fi
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LIBS="$save_LIBS"
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CFLAGS="$save_CFLAGS"
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CC="$ax_pthread_save_CC"
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CFLAGS="$ax_pthread_save_CFLAGS"
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LIBS="$ax_pthread_save_LIBS"
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fi
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# We must check for the threads library under a number of different
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@ -123,7 +128,7 @@ fi
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# which indicates that we try without any flags at all, and "pthread-config"
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# which is a program returning the flags for the Pth emulation library.
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ax_pthread_flags="pthreads none -Kthread -kthread lthread -pthread -pthreads -mthreads pthread --thread-safe -mt pthread-config"
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ax_pthread_flags="pthreads none -Kthread -pthread -pthreads -mthreads pthread --thread-safe -mt pthread-config"
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# The ordering *is* (sometimes) important. Some notes on the
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# individual items follow:
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@ -132,68 +137,225 @@ ax_pthread_flags="pthreads none -Kthread -kthread lthread -pthread -pthreads -mt
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# none: in case threads are in libc; should be tried before -Kthread and
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# other compiler flags to prevent continual compiler warnings
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# -Kthread: Sequent (threads in libc, but -Kthread needed for pthread.h)
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# -kthread: FreeBSD kernel threads (preferred to -pthread since SMP-able)
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# lthread: LinuxThreads port on FreeBSD (also preferred to -pthread)
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# -pthread: Linux/gcc (kernel threads), BSD/gcc (userland threads)
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# -pthreads: Solaris/gcc
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# -mthreads: Mingw32/gcc, Lynx/gcc
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# -pthread: Linux/gcc (kernel threads), BSD/gcc (userland threads), Tru64
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# (Note: HP C rejects this with "bad form for `-t' option")
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# -pthreads: Solaris/gcc (Note: HP C also rejects)
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# -mt: Sun Workshop C (may only link SunOS threads [-lthread], but it
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# doesn't hurt to check since this sometimes defines pthreads too;
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# also defines -D_REENTRANT)
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# ... -mt is also the pthreads flag for HP/aCC
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# doesn't hurt to check since this sometimes defines pthreads and
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# -D_REENTRANT too), HP C (must be checked before -lpthread, which
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# is present but should not be used directly; and before -mthreads,
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# because the compiler interprets this as "-mt" + "-hreads")
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# -mthreads: Mingw32/gcc, Lynx/gcc
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# pthread: Linux, etcetera
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# --thread-safe: KAI C++
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# pthread-config: use pthread-config program (for GNU Pth library)
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case ${host_os} in
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case $host_os in
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freebsd*)
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# -kthread: FreeBSD kernel threads (preferred to -pthread since SMP-able)
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# lthread: LinuxThreads port on FreeBSD (also preferred to -pthread)
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ax_pthread_flags="-kthread lthread $ax_pthread_flags"
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;;
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hpux*)
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# From the cc(1) man page: "[-mt] Sets various -D flags to enable
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# multi-threading and also sets -lpthread."
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ax_pthread_flags="-mt -pthread pthread $ax_pthread_flags"
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;;
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openedition*)
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# IBM z/OS requires a feature-test macro to be defined in order to
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# enable POSIX threads at all, so give the user a hint if this is
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# not set. (We don't define these ourselves, as they can affect
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# other portions of the system API in unpredictable ways.)
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AC_EGREP_CPP([AX_PTHREAD_ZOS_MISSING],
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[
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# if !defined(_OPEN_THREADS) && !defined(_UNIX03_THREADS)
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AX_PTHREAD_ZOS_MISSING
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# endif
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],
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[AC_MSG_WARN([IBM z/OS requires -D_OPEN_THREADS or -D_UNIX03_THREADS to enable pthreads support.])])
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;;
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solaris*)
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# On Solaris (at least, for some versions), libc contains stubbed
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# (non-functional) versions of the pthreads routines, so link-based
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# tests will erroneously succeed. (We need to link with -pthreads/-mt/
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# -lpthread.) (The stubs are missing pthread_cleanup_push, or rather
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# a function called by this macro, so we could check for that, but
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# who knows whether they'll stub that too in a future libc.) So,
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# we'll just look for -pthreads and -lpthread first:
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# tests will erroneously succeed. (N.B.: The stubs are missing
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# pthread_cleanup_push, or rather a function called by this macro,
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# so we could check for that, but who knows whether they'll stub
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# that too in a future libc.) So we'll check first for the
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# standard Solaris way of linking pthreads (-mt -lpthread).
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ax_pthread_flags="-pthreads pthread -mt -pthread $ax_pthread_flags"
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;;
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darwin*)
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ax_pthread_flags="-pthread $ax_pthread_flags"
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ax_pthread_flags="-mt,pthread pthread $ax_pthread_flags"
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;;
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esac
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if test x"$ax_pthread_ok" = xno; then
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for flag in $ax_pthread_flags; do
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# GCC generally uses -pthread, or -pthreads on some platforms (e.g. SPARC)
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case $flag in
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AS_IF([test "x$GCC" = "xyes"],
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[ax_pthread_flags="-pthread -pthreads $ax_pthread_flags"])
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# The presence of a feature test macro requesting re-entrant function
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# definitions is, on some systems, a strong hint that pthreads support is
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# correctly enabled
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case $host_os in
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darwin* | hpux* | linux* | osf* | solaris*)
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ax_pthread_check_macro="_REENTRANT"
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;;
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aix*)
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ax_pthread_check_macro="_THREAD_SAFE"
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;;
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*)
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ax_pthread_check_macro="--"
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;;
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esac
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AS_IF([test "x$ax_pthread_check_macro" = "x--"],
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[ax_pthread_check_cond=0],
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[ax_pthread_check_cond="!defined($ax_pthread_check_macro)"])
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# Are we compiling with Clang?
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AC_CACHE_CHECK([whether $CC is Clang],
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[ax_cv_PTHREAD_CLANG],
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[ax_cv_PTHREAD_CLANG=no
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# Note that Autoconf sets GCC=yes for Clang as well as GCC
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if test "x$GCC" = "xyes"; then
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AC_EGREP_CPP([AX_PTHREAD_CC_IS_CLANG],
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[/* Note: Clang 2.7 lacks __clang_[a-z]+__ */
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# if defined(__clang__) && defined(__llvm__)
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AX_PTHREAD_CC_IS_CLANG
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# endif
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],
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[ax_cv_PTHREAD_CLANG=yes])
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fi
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])
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ax_pthread_clang="$ax_cv_PTHREAD_CLANG"
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ax_pthread_clang_warning=no
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# Clang needs special handling, because older versions handle the -pthread
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# option in a rather... idiosyncratic way
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if test "x$ax_pthread_clang" = "xyes"; then
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# Clang takes -pthread; it has never supported any other flag
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# (Note 1: This will need to be revisited if a system that Clang
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# supports has POSIX threads in a separate library. This tends not
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# to be the way of modern systems, but it's conceivable.)
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# (Note 2: On some systems, notably Darwin, -pthread is not needed
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# to get POSIX threads support; the API is always present and
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# active. We could reasonably leave PTHREAD_CFLAGS empty. But
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# -pthread does define _REENTRANT, and while the Darwin headers
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# ignore this macro, third-party headers might not.)
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PTHREAD_CFLAGS="-pthread"
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PTHREAD_LIBS=
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ax_pthread_ok=yes
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# However, older versions of Clang make a point of warning the user
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# that, in an invocation where only linking and no compilation is
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# taking place, the -pthread option has no effect ("argument unused
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# during compilation"). They expect -pthread to be passed in only
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# when source code is being compiled.
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#
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# Problem is, this is at odds with the way Automake and most other
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# C build frameworks function, which is that the same flags used in
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# compilation (CFLAGS) are also used in linking. Many systems
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# supported by AX_PTHREAD require exactly this for POSIX threads
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# support, and in fact it is often not straightforward to specify a
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# flag that is used only in the compilation phase and not in
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# linking. Such a scenario is extremely rare in practice.
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#
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# Even though use of the -pthread flag in linking would only print
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# a warning, this can be a nuisance for well-run software projects
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# that build with -Werror. So if the active version of Clang has
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# this misfeature, we search for an option to squash it.
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AC_CACHE_CHECK([whether Clang needs flag to prevent "argument unused" warning when linking with -pthread],
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[ax_cv_PTHREAD_CLANG_NO_WARN_FLAG],
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[ax_cv_PTHREAD_CLANG_NO_WARN_FLAG=unknown
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# Create an alternate version of $ac_link that compiles and
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# links in two steps (.c -> .o, .o -> exe) instead of one
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# (.c -> exe), because the warning occurs only in the second
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# step
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ax_pthread_save_ac_link="$ac_link"
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ax_pthread_sed='s/conftest\.\$ac_ext/conftest.$ac_objext/g'
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ax_pthread_link_step=`$as_echo "$ac_link" | sed "$ax_pthread_sed"`
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ax_pthread_2step_ac_link="($ac_compile) && (echo ==== >&5) && ($ax_pthread_link_step)"
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ax_pthread_save_CFLAGS="$CFLAGS"
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for ax_pthread_try in '' -Qunused-arguments -Wno-unused-command-line-argument unknown; do
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AS_IF([test "x$ax_pthread_try" = "xunknown"], [break])
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CFLAGS="-Werror -Wunknown-warning-option $ax_pthread_try -pthread $ax_pthread_save_CFLAGS"
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ac_link="$ax_pthread_save_ac_link"
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AC_LINK_IFELSE([AC_LANG_SOURCE([[int main(void){return 0;}]])],
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[ac_link="$ax_pthread_2step_ac_link"
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AC_LINK_IFELSE([AC_LANG_SOURCE([[int main(void){return 0;}]])],
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[break])
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])
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done
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ac_link="$ax_pthread_save_ac_link"
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CFLAGS="$ax_pthread_save_CFLAGS"
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AS_IF([test "x$ax_pthread_try" = "x"], [ax_pthread_try=no])
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ax_cv_PTHREAD_CLANG_NO_WARN_FLAG="$ax_pthread_try"
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])
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case "$ax_cv_PTHREAD_CLANG_NO_WARN_FLAG" in
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no | unknown) ;;
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*) PTHREAD_CFLAGS="$ax_cv_PTHREAD_CLANG_NO_WARN_FLAG $PTHREAD_CFLAGS" ;;
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esac
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fi # $ax_pthread_clang = yes
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if test "x$ax_pthread_ok" = "xno"; then
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for ax_pthread_try_flag in $ax_pthread_flags; do
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case $ax_pthread_try_flag in
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none)
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AC_MSG_CHECKING([whether pthreads work without any flags])
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;;
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-mt,pthread)
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AC_MSG_CHECKING([whether pthreads work with -mt -lpthread])
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PTHREAD_CFLAGS="-mt"
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PTHREAD_LIBS="-lpthread"
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;;
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-*)
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AC_MSG_CHECKING([whether pthreads work with $flag])
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PTHREAD_CFLAGS="$flag"
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AC_MSG_CHECKING([whether pthreads work with $ax_pthread_try_flag])
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PTHREAD_CFLAGS="$ax_pthread_try_flag"
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;;
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pthread-config)
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AC_CHECK_PROG(ax_pthread_config, pthread-config, yes, no)
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if test x"$ax_pthread_config" = xno; then continue; fi
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AC_CHECK_PROG([ax_pthread_config], [pthread-config], [yes], [no])
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AS_IF([test "x$ax_pthread_config" = "xno"], [continue])
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PTHREAD_CFLAGS="`pthread-config --cflags`"
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PTHREAD_LIBS="`pthread-config --ldflags` `pthread-config --libs`"
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;;
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*)
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AC_MSG_CHECKING([for the pthreads library -l$flag])
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PTHREAD_LIBS="-l$flag"
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AC_MSG_CHECKING([for the pthreads library -l$ax_pthread_try_flag])
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PTHREAD_LIBS="-l$ax_pthread_try_flag"
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;;
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esac
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save_LIBS="$LIBS"
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save_CFLAGS="$CFLAGS"
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LIBS="$PTHREAD_LIBS $LIBS"
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ax_pthread_save_CFLAGS="$CFLAGS"
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ax_pthread_save_LIBS="$LIBS"
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CFLAGS="$CFLAGS $PTHREAD_CFLAGS"
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LIBS="$PTHREAD_LIBS $LIBS"
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# Check for various functions. We must include pthread.h,
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# since some functions may be macros. (On the Sequent, we
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@ -204,7 +366,11 @@ for flag in $ax_pthread_flags; do
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# pthread_cleanup_push because it is one of the few pthread
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# functions on Solaris that doesn't have a non-functional libc stub.
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# We try pthread_create on general principles.
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AC_LINK_IFELSE([AC_LANG_PROGRAM([#include <pthread.h>
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# if $ax_pthread_check_cond
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# error "$ax_pthread_check_macro must be defined"
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# endif
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static void routine(void *a) { a = 0; }
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static void *start_routine(void *a) { return a; }],
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[pthread_t th; pthread_attr_t attr;
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@ -216,13 +382,11 @@ for flag in $ax_pthread_flags; do
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[ax_pthread_ok=yes],
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[])
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LIBS="$save_LIBS"
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CFLAGS="$save_CFLAGS"
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CFLAGS="$ax_pthread_save_CFLAGS"
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LIBS="$ax_pthread_save_LIBS"
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AC_MSG_RESULT($ax_pthread_ok)
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if test "x$ax_pthread_ok" = xyes; then
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break;
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fi
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AC_MSG_RESULT([$ax_pthread_ok])
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AS_IF([test "x$ax_pthread_ok" = "xyes"], [break])
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PTHREAD_LIBS=""
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PTHREAD_CFLAGS=""
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@ -230,76 +394,88 @@ done
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fi
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# Various other checks:
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if test "x$ax_pthread_ok" = xyes; then
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save_LIBS="$LIBS"
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LIBS="$PTHREAD_LIBS $LIBS"
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save_CFLAGS="$CFLAGS"
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if test "x$ax_pthread_ok" = "xyes"; then
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ax_pthread_save_CFLAGS="$CFLAGS"
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ax_pthread_save_LIBS="$LIBS"
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CFLAGS="$CFLAGS $PTHREAD_CFLAGS"
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LIBS="$PTHREAD_LIBS $LIBS"
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# Detect AIX lossage: JOINABLE attribute is called UNDETACHED.
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AC_MSG_CHECKING([for joinable pthread attribute])
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attr_name=unknown
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for attr in PTHREAD_CREATE_JOINABLE PTHREAD_CREATE_UNDETACHED; do
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AC_CACHE_CHECK([for joinable pthread attribute],
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[ax_cv_PTHREAD_JOINABLE_ATTR],
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[ax_cv_PTHREAD_JOINABLE_ATTR=unknown
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for ax_pthread_attr in PTHREAD_CREATE_JOINABLE PTHREAD_CREATE_UNDETACHED; do
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AC_LINK_IFELSE([AC_LANG_PROGRAM([#include <pthread.h>],
|
||||
[int attr = $attr; return attr /* ; */])],
|
||||
[attr_name=$attr; break],
|
||||
[int attr = $ax_pthread_attr; return attr /* ; */])],
|
||||
[ax_cv_PTHREAD_JOINABLE_ATTR=$ax_pthread_attr; break],
|
||||
[])
|
||||
done
|
||||
AC_MSG_RESULT($attr_name)
|
||||
if test "$attr_name" != PTHREAD_CREATE_JOINABLE; then
|
||||
AC_DEFINE_UNQUOTED(PTHREAD_CREATE_JOINABLE, $attr_name,
|
||||
])
|
||||
AS_IF([test "x$ax_cv_PTHREAD_JOINABLE_ATTR" != "xunknown" && \
|
||||
test "x$ax_cv_PTHREAD_JOINABLE_ATTR" != "xPTHREAD_CREATE_JOINABLE" && \
|
||||
test "x$ax_pthread_joinable_attr_defined" != "xyes"],
|
||||
[AC_DEFINE_UNQUOTED([PTHREAD_CREATE_JOINABLE],
|
||||
[$ax_cv_PTHREAD_JOINABLE_ATTR],
|
||||
[Define to necessary symbol if this constant
|
||||
uses a non-standard name on your system.])
|
||||
fi
|
||||
ax_pthread_joinable_attr_defined=yes
|
||||
])
|
||||
|
||||
AC_MSG_CHECKING([if more special flags are required for pthreads])
|
||||
flag=no
|
||||
case ${host_os} in
|
||||
aix* | freebsd* | darwin*) flag="-D_THREAD_SAFE";;
|
||||
osf* | hpux*) flag="-D_REENTRANT";;
|
||||
AC_CACHE_CHECK([whether more special flags are required for pthreads],
|
||||
[ax_cv_PTHREAD_SPECIAL_FLAGS],
|
||||
[ax_cv_PTHREAD_SPECIAL_FLAGS=no
|
||||
case $host_os in
|
||||
solaris*)
|
||||
if test "$GCC" = "yes"; then
|
||||
flag="-D_REENTRANT"
|
||||
else
|
||||
flag="-mt -D_REENTRANT"
|
||||
fi
|
||||
ax_cv_PTHREAD_SPECIAL_FLAGS="-D_POSIX_PTHREAD_SEMANTICS"
|
||||
;;
|
||||
esac
|
||||
AC_MSG_RESULT(${flag})
|
||||
if test "x$flag" != xno; then
|
||||
PTHREAD_CFLAGS="$flag $PTHREAD_CFLAGS"
|
||||
fi
|
||||
])
|
||||
AS_IF([test "x$ax_cv_PTHREAD_SPECIAL_FLAGS" != "xno" && \
|
||||
test "x$ax_pthread_special_flags_added" != "xyes"],
|
||||
[PTHREAD_CFLAGS="$ax_cv_PTHREAD_SPECIAL_FLAGS $PTHREAD_CFLAGS"
|
||||
ax_pthread_special_flags_added=yes])
|
||||
|
||||
AC_CACHE_CHECK([for PTHREAD_PRIO_INHERIT],
|
||||
ax_cv_PTHREAD_PRIO_INHERIT, [
|
||||
AC_LINK_IFELSE([
|
||||
AC_LANG_PROGRAM([[#include <pthread.h>]], [[int i = PTHREAD_PRIO_INHERIT;]])],
|
||||
[ax_cv_PTHREAD_PRIO_INHERIT],
|
||||
[AC_LINK_IFELSE([AC_LANG_PROGRAM([[#include <pthread.h>]],
|
||||
[[int i = PTHREAD_PRIO_INHERIT;]])],
|
||||
[ax_cv_PTHREAD_PRIO_INHERIT=yes],
|
||||
[ax_cv_PTHREAD_PRIO_INHERIT=no])
|
||||
])
|
||||
AS_IF([test "x$ax_cv_PTHREAD_PRIO_INHERIT" = "xyes"],
|
||||
AC_DEFINE([HAVE_PTHREAD_PRIO_INHERIT], 1, [Have PTHREAD_PRIO_INHERIT.]))
|
||||
AS_IF([test "x$ax_cv_PTHREAD_PRIO_INHERIT" = "xyes" && \
|
||||
test "x$ax_pthread_prio_inherit_defined" != "xyes"],
|
||||
[AC_DEFINE([HAVE_PTHREAD_PRIO_INHERIT], [1], [Have PTHREAD_PRIO_INHERIT.])
|
||||
ax_pthread_prio_inherit_defined=yes
|
||||
])
|
||||
|
||||
LIBS="$save_LIBS"
|
||||
CFLAGS="$save_CFLAGS"
|
||||
CFLAGS="$ax_pthread_save_CFLAGS"
|
||||
LIBS="$ax_pthread_save_LIBS"
|
||||
|
||||
# More AIX lossage: must compile with xlc_r or cc_r
|
||||
if test x"$GCC" != xyes; then
|
||||
AC_CHECK_PROGS(PTHREAD_CC, xlc_r cc_r, ${CC})
|
||||
else
|
||||
PTHREAD_CC=$CC
|
||||
# More AIX lossage: compile with *_r variant
|
||||
if test "x$GCC" != "xyes"; then
|
||||
case $host_os in
|
||||
aix*)
|
||||
AS_CASE(["x/$CC"],
|
||||
[x*/c89|x*/c89_128|x*/c99|x*/c99_128|x*/cc|x*/cc128|x*/xlc|x*/xlc_v6|x*/xlc128|x*/xlc128_v6],
|
||||
[#handle absolute path differently from PATH based program lookup
|
||||
AS_CASE(["x$CC"],
|
||||
[x/*],
|
||||
[AS_IF([AS_EXECUTABLE_P([${CC}_r])],[PTHREAD_CC="${CC}_r"])],
|
||||
[AC_CHECK_PROGS([PTHREAD_CC],[${CC}_r],[$CC])])])
|
||||
;;
|
||||
esac
|
||||
fi
|
||||
else
|
||||
PTHREAD_CC="$CC"
|
||||
fi
|
||||
|
||||
AC_SUBST(PTHREAD_LIBS)
|
||||
AC_SUBST(PTHREAD_CFLAGS)
|
||||
AC_SUBST(PTHREAD_CC)
|
||||
test -n "$PTHREAD_CC" || PTHREAD_CC="$CC"
|
||||
|
||||
AC_SUBST([PTHREAD_LIBS])
|
||||
AC_SUBST([PTHREAD_CFLAGS])
|
||||
AC_SUBST([PTHREAD_CC])
|
||||
|
||||
# Finally, execute ACTION-IF-FOUND/ACTION-IF-NOT-FOUND:
|
||||
if test x"$ax_pthread_ok" = xyes; then
|
||||
ifelse([$1],,AC_DEFINE(HAVE_PTHREAD,1,[Define if you have POSIX threads libraries and header files.]),[$1])
|
||||
if test "x$ax_pthread_ok" = "xyes"; then
|
||||
ifelse([$1],,[AC_DEFINE([HAVE_PTHREAD],[1],[Define if you have POSIX threads libraries and header files.])],[$1])
|
||||
:
|
||||
else
|
||||
ax_pthread_ok=no
|
||||
|
|
|
|||
Loading…
Reference in New Issue