diff options
| -rw-r--r-- | m4/gst-makecontext.m4 | 34 |
1 files changed, 34 insertions, 0 deletions
diff --git a/m4/gst-makecontext.m4 b/m4/gst-makecontext.m4 new file mode 100644 index 0000000..467aa13 --- /dev/null +++ b/m4/gst-makecontext.m4 @@ -0,0 +1,34 @@ +AC_DEFUN(GST_CHECK_MAKECONTEXT, [ + AC_MSG_CHECKING([whether we have makecontext]) + AC_TRY_RUN([ +#include <ucontext.h> +#include <stdlib.h> + +void test(void) +{ + exit(0); +} + +int main(int argc, char *argv[]) +{ + ucontext_t ucp; + int ret; + + ret = getcontext(&ucp); + if(ret<0)exit(1); + + ucp.uc_stack.ss_sp = malloc(65536); + ucp.uc_stack.ss_size = 65536; + + makecontext(&ucp,test,0); + setcontext(&ucp); + + exit(1); +} +], HAVE_MAKECONTEXT="yes", HAVE_MAKECONTEXT="no") +AC_MSG_RESULT($HAVE_MAKECONTEXT) +if test "$HAVE_MAKECONTEXT" == "yes"; then + AC_DEFINE_UNQUOTED(HAVE_MAKECONTEXT, $HAVE_MAKECONTEXT, + [defined if we have makecontext ()]) +fi +]) |