priority. If you happen to know these main/max
priorities, please inform the GLib developers."
+AIX_COMPILE_INFO="AIX's C compiler needs to be called by a different name, when
+ linking threaded applications. As GLib cannot do that
+ automatically, you will get an linkg error everytime you are
+ not using the right compiler. In that case you have to relink
+ with the right compiler. Ususally just '_r' is appended
+ to the compiler name."
dnl determination of thread implementation
dnl ***************************************
if test x"$have_threads" != xno; then
- G_THREAD_CFLAGS="-D_REENTRANT" # good default guess
+ if test x"$have_threads" = xposix; then
+ # First we test for posix, whether -pthread or -pthreads do the trick as
+ # both CPPFLAG and LIBS.
+ # One of them does for most gcc versions and some other platforms/compilers
+ # too and could be considered as the canonical way to go.
+ for flag in pthread pthreads; do
+ glib_save_CFLAGS="$CFLAGS"
+ CFLAGS="$CFLAGS -$flag"
+ AC_TRY_RUN([#include <pthread.h>
+ int check_me = 0;
+ void* func(void* data) {return check_me = 42;}
+ main()
+ { pthread_t t;
+ void *ret;
+ pthread_create (&t, 0, func, 0);
+ pthread_join (t, &ret);
+ exit (check_me != 42 || ret != 42);
+ }],
+ [G_THREAD_CFLAGS=-$flag
+ G_THREAD_LIBS=-$flag])
+ CFLAGS="$glib_save_CFLAGS"
+ done
+ fi
+
+ if test x"$G_THREAD_CFLAGS" = x; then
+
+ # The canonical -pthread[s] does not work. Try something different.
case $host in
*-aix*)
- G_THREAD_CFLAGS="$G_THREAD_CFLAGS -D_THREAD_SAFE"
if test x"$GCC" = xyes; then
- # GCC 3.0 and above needs -pthread
+ # GCC 3.0 and above needs -pthread.
+ # Should be coverd by the case above.
# GCC 2.x and below needs -mthreads
- AC_TRY_COMPILE(,[#if __GNUC__ <= 2
- bail out here
- #endif],
- G_THREAD_CFLAGS="$G_THREAD_CFLAGS -pthread",
- G_THREAD_CFLAGS="$G_THREAD_CFLAGS -mthreads")
+ G_THREAD_CFLAGS="-mthreads"
+ G_THREAD_LIBS=$G_THREAD_CFLAGS
+ else
+ # We are probably using the aix compiler. Normaly a
+ # program would have to be compiled with the _r variant
+ # of the corresponding compiler, but we as GLib cannot
+ # do that: but the good news is that for compiling the
+ # only difference is the added -D_THREAD_SAFE compile
+ # option. This is according to the "C for AIX User's
+ # Guide".
+ G_THREAD_CFLAGS="-D_THREAD_SAFE"
fi
;;
- *-freebsd2.2*)
- G_THREAD_CFLAGS="$G_THREAD_CFLAGS -D_THREAD_SAFE"
-
- # FreeBSD 2.2.x shiped with gcc 2.7.2.x, which doesn't support
- # -mthreads flag.
- ;;
- *-sysv5uw7*) # UnixWare 7
- if test "$GCC" != "yes"; then
- G_THREAD_CFLAGS="$G_THREAD_CFLAGS -Kthread"
- else
- G_THREAD_CFLAGS="$G_THREAD_CFLAGS -pthread"
- fi
- ;;
*-dg-dgux*) # DG/UX
- G_THREAD_CFLAGS="$G_THREAD_CFLAGS -D_POSIX4A_DRAFT10_SOURCE"
+ G_THREAD_CFLAGS="-D_REENTRANT -D_POSIX4A_DRAFT10_SOURCE"
+ ;;
+ *-osf*)
+ # So we are using dce threads. posix threads are already
+ # catched above.
+ G_THREAD_CFLAGS="-threads"
+ G_THREAD_LIBS=$G_THREAD_CFLAGS
+ ;;
+ *-solaris*)
+ if test x"$GCC" = xyes; then
+ # We are using solaris threads. posix threads are
+ # already catched above.
+ G_THREAD_CFLAGS="-threads"
+ else
+ G_THREAD_CFLAGS="-mt"
+ fi
+ G_THREAD_LIBS=$G_THREAD_CFLAGS
+ ;;
+ *-sysv5uw7*) # UnixWare 7
+ # We are not using gcc with -pthread. Catched above.
+ G_THREAD_CFLAGS="-Kthread"
+ G_THREAD_LIBS=$G_THREAD_CFLAGS
+ ;;
+ *)
+ G_THREAD_CFLAGS="-D_REENTRANT" # good default guess otherwise
+ ;;
esac
+
+ fi
# if we are not finding the localtime_r function, then we probably are
# not using the proper multithread flag
mutex_has_default=no
case $have_threads in
posix|dce)
- glib_save_CPPFLAGS="$CPPFLAGS"
- CPPFLAGS="$CPPFLAGS $GTHREAD_COMPILE_IMPL_DEFINES"
- G_THREAD_LIBS=error
- glib_save_LIBS="$LIBS"
- case $host in
- *-sysv5uw7*) # UnixWare 7
- if test "$GCC" != "yes"; then
- G_THREAD_LIBS="-Kthread"
- else
- G_THREAD_LIBS="-pthread"
- fi
- ;;
- *-*-openbsd* | *-*-freebsd*)
- # FreeBSD and OpenBSD want us to use the -pthread flag
- # instead of linking to -lc_r and libtool enforces that.
- G_THREAD_LIBS="-pthread"
- ;;
- *)
- for thread_lib in "" pthread pthread32 pthreads thread dce; do
+ if test x"$G_THREAD_LIBS" = x; then
+ case $host in
+ *-aix*)
+ # We are not using gcc (would have set G_THREAD_LIBS) and thus
+ # probably using the aix compiler.
+ AC_MSG_WARN($AIX_COMPILE_INFO)
+ ;;
+ *)
+ glib_save_CPPFLAGS="$CPPFLAGS"
+ CPPFLAGS="$CPPFLAGS $GTHREAD_COMPILE_IMPL_DEFINES"
+ G_THREAD_LIBS=error
+ glib_save_LIBS="$LIBS"
+ for thread_lib in "" pthread pthread32 pthreads thread dce; do
if test x"$thread_lib" = x; then
add_thread_lib=""
IN=""
break],
[AC_MSG_RESULT(no)])
done
+ if test "x$G_THREAD_LIBS" = xerror; then
+ AC_MSG_ERROR($LIBS_NOT_FOUND_1$have_threads$LIBS_NOT_FOUND_2)
+ fi
+ LIBS="$glib_save_LIBS"
;;
- esac
- if test "x$G_THREAD_LIBS" = xerror; then
- AC_MSG_ERROR($LIBS_NOT_FOUND_1$have_threads$LIBS_NOT_FOUND_2)
- fi
- for thread_lib in "" rt rte; do
- if test x"$thread_lib" = x; then
- add_thread_lib=""
- IN=""
- else
- add_thread_lib="-l$thread_lib"
- IN=" in -l$thread_lib"
- fi
- LIBS="$glib_save_LIBS $add_thread_lib"
-
- AC_MSG_CHECKING(for sched_get_priority_min$IN)
- AC_TRY_RUN([#include <sched.h>
- #include <errno.h>
- int main() {
- errno = 0;
- return sched_get_priority_min(SCHED_OTHER)==-1
- && errno != 0;}],
- [AC_MSG_RESULT(yes)
- G_THREAD_LIBS="$G_THREAD_LIBS $add_thread_lib"
+ esac
+ fi
+
+ glib_save_LIBS="$LIBS"
+ for thread_lib in "" rt rte; do
+ if test x"$thread_lib" = x; then
+ add_thread_lib=""
+ IN=""
+ else
+ add_thread_lib="-l$thread_lib"
+ IN=" in -l$thread_lib"
+ fi
+ LIBS="$glib_save_LIBS $add_thread_lib"
+
+ AC_MSG_CHECKING(for sched_get_priority_min$IN)
+ AC_TRY_RUN([#include <sched.h>
+ #include <errno.h>
+ int main() {
+ errno = 0;
+ return sched_get_priority_min(SCHED_OTHER)==-1
+ && errno != 0;}],
+ [AC_MSG_RESULT(yes)
+ G_THREAD_LIBS="$G_THREAD_LIBS $add_thread_lib"
posix_priority_min="sched_get_priority_min(SCHED_OTHER)"
posix_priority_max="sched_get_priority_max(SCHED_OTHER)"
break],
[AC_MSG_RESULT(no)])
- done
- LIBS="$glib_save_LIBS"
- mutex_has_default=yes
- mutex_default_type='pthread_mutex_t'
- mutex_default_init='PTHREAD_MUTEX_INITIALIZER'
- mutex_header_file='pthread.h'
- if test "x$have_threads" = "xposix"; then
- g_threads_impl="POSIX"
- else
- g_threads_impl="DCE"
- have_threads="posix"
- fi
- AC_SUBST(GTHREAD_COMPILE_IMPL_DEFINES)
- CPPFLAGS="$glib_save_CPPFLAGS"
- ;;
+ done
+ LIBS="$glib_save_LIBS"
+ mutex_has_default=yes
+ mutex_default_type='pthread_mutex_t'
+ mutex_default_init='PTHREAD_MUTEX_INITIALIZER'
+ mutex_header_file='pthread.h'
+ if test "x$have_threads" = "xposix"; then
+ g_threads_impl="POSIX"
+ else
+ g_threads_impl="DCE"
+ have_threads="posix"
+ fi
+ AC_SUBST(GTHREAD_COMPILE_IMPL_DEFINES)
+ CPPFLAGS="$glib_save_CPPFLAGS"
+ ;;
solaris)
- G_THREAD_LIBS=error
- AC_CHECK_LIB(thread, cond_init, G_THREAD_LIBS="-lthread")
mutex_has_default=yes
mutex_default_type='mutex_t'
mutex_default_init="DEFAULTMUTEX"
;;
win32)
g_threads_impl="WIN32"
- G_THREAD_LIBS=""
;;
none|no)
g_threads_impl="NONE"
projects / platform / upstream / glib.git / commitdiff