http://gcc.gnu.org/bugzilla/show_bug.cgi?id=52179
--- Comment #12 from Jack Howarth <howarth at nitro dot med.uc.edu> 2012-02-23 15:07:17 UTC --- (In reply to comment #11) > Ah, the better way to do that would be to have: > > AC_CHECK_FUNCS([pthread_get_stackaddr_np]) > > in configure.ac, and then just have > > #ifdef HAVE_PTHREAD_GET_STACKADDR_NP > #define STACKBOTTOM (ptr_t)pthread_get_stackaddr_np(pthread_self()) > #endif > > This should cover all the issues with NO_PTHREAD... Where do you want the second change made? Should I place that in include/gc_config.h.in (which only contains #undefs right now) or in include/gc_config_macros.h or in os_dep.c? I notice that HAVE_PTHREAD_GETATTR_NP is only used in pthread_support.c. The rest of the patch looks like... Index: configure.ac =================================================================== --- configure.ac (revision 184508) +++ configure.ac (working copy) @@ -380,6 +380,7 @@ esac oldLIBS="$LIBS" LIBS="$LIBS $THREADLIBS" AC_CHECK_FUNCS([pthread_getattr_np]) +AC_CHECK_FUNCS([pthread_get_stackaddr_np]) LIBS="$oldLIBS" # Configuration of machine-dependent code Index: include/gc_config.h.in =================================================================== --- include/gc_config.h.in (revision 184508) +++ include/gc_config.h.in (working copy) @@ -87,6 +87,9 @@ /* Define to 1 if you have the `pthread_getattr_np' function. */ #undef HAVE_PTHREAD_GETATTR_NP +/* Define to 1 if you have the `pthread_get_stackaddr_np_np' function. */ +#undef HAVE_PTHREAD_GET_STACKADDR_NP + /* Define to 1 if you have the <stdint.h> header file. */ #undef HAVE_STDINT_H Index: configure =================================================================== --- configure (revision 184508) +++ configure (working copy) @@ -15141,6 +15141,17 @@ _ACEOF fi done +for ac_func in pthread_get_stackaddr_np +do : + ac_fn_c_check_func "$LINENO" "pthread_get_stackaddr_np" "ac_cv_func_pthread_get_stackaddr_np" +if test "x$ac_cv_func_pthread_get_stackaddr_np" = x""yes; then : + cat >>confdefs.h <<_ACEOF +#define HAVE_PTHREAD_GET_STACKADDR_NP 1 +_ACEOF + +fi +done + LIBS="$oldLIBS" # Configuration of machine-dependent code
