diff options
Diffstat (limited to 'm4')
| -rw-r--r-- | m4/Makefile.am | 3 | ||||
| -rw-r--r-- | m4/pthreads.m4 | 59 |
2 files changed, 61 insertions, 1 deletions
diff --git a/m4/Makefile.am b/m4/Makefile.am index 8f6fcc85d..d78fb6a88 100644 --- a/m4/Makefile.am +++ b/m4/Makefile.am @@ -31,4 +31,5 @@ EXTRA_DIST = glibc2.m4 intdiv0.m4 intmax.m4 inttypes.m4 inttypes_h.m4 inttypes-p progtest.m4 \ xine.m4 \ _xine.m4 \ - xv.m4 + xv.m4 \ + pthreads.m4 diff --git a/m4/pthreads.m4 b/m4/pthreads.m4 new file mode 100644 index 000000000..28d72dd4f --- /dev/null +++ b/m4/pthreads.m4 @@ -0,0 +1,59 @@ +dnl Detection of the Pthread implementation flags and libraries +dnl Diego Pettenò <flameeyes-aBrp7R+bbdUdnm+yROfE0A@public.gmane.org> 2006-11-03 +dnl +dnl CC_PTHREAD_FLAGS([ACTION-IF-FOUND [, ACTION-IF-NOT-FOUND]]) +dnl This macro checks for the Pthread flags to use to build +dnl with support for PTHREAD_LIBS and PTHREAD_CFLAGS variables +dnl used in FreeBSD ports. +dnl +dnl This macro is released as public domain, but please mail +dnl to flameeyes@gmail.com if you want to add support for a +dnl new case, or if you're going to use it, so that there will +dnl always be a version available. +AC_DEFUN([CC_PTHREAD_FLAGS], [ + AC_REQUIRE([CC_CHECK_WERROR]) + AC_ARG_VAR([PTHREAD_CFLAGS], [C compiler flags for Pthread support]) + AC_ARG_VAR([PTHREAD_LIBS], [linker flags for Pthread support]) + + dnl if PTHREAD_* are not set, default to -pthread (GCC) + if test "${PTHREAD_CFLAGS-unset}" = "unset"; then + case $host in + *-hpux11*) PTHREAD_CFLAGS="" ;; + *-darwin*) PTHREAD_CFLAGS="" ;; + *) PTHREAD_CFLAGS="-pthread" ;; + esac + fi + if test "${PTHREAD_LIBS-unset}" = "unset"; then + case $host in + *-hpux11*) PTHREAD_LIBS="-lpthread" ;; + *-darwin*) PTHREAD_LIBS="" ;; + *) PTHREAD_LIBS="-pthread" ;; + esac + fi + + AC_CACHE_CHECK([if $CC supports Pthread], + AS_TR_SH([cc_cv_pthreads]), + [ac_save_CFLAGS="$CFLAGS" + ac_save_LIBS="$LIBS" + CFLAGS="$CFLAGS $cc_cv_werror $PTHREAD_CFLAGS" + LIBS="$LIBS $PTHREAD_LIBS" + AC_COMPILE_IFELSE( + [AC_LANG_PROGRAM( + [[#include <pthread.h>]], + [[pthread_create(NULL, NULL, NULL, NULL);]] + )], + [cc_cv_pthreads=yes], + [cc_cv_pthreads=no]) + CFLAGS="$ac_save_CFLAGS" + LIBS="$ac_save_LIBS" + ]) + + AC_SUBST([PTHREAD_LIBS]) + AC_SUBST([PTHREAD_CFLAGS]) + + if test x$cc_cv_pthreads = xyes; then + ifelse([$1], , [:], [$1]) + else + ifelse([$2], , [:], [$2]) + fi +]) |