| dnl |
| dnl Check for compiler mechanism to show functions in debugging |
| dnl copied from an Ali patch floating on the internet |
| dnl |
| AC_DEFUN([AG_GST_CHECK_FUNCTION],[ |
| dnl #1: __PRETTY_FUNCTION__ |
| AC_MSG_CHECKING(whether $CC implements __PRETTY_FUNCTION__) |
| AC_CACHE_VAL(gst_cv_have_pretty_function,[ |
| AC_TRY_LINK([#include <stdio.h>], |
| [printf("%s", __PRETTY_FUNCTION__);], |
| gst_cv_have_pretty_function=yes, |
| gst_cv_have_pretty_function=no) |
| ]) |
| AC_MSG_RESULT($gst_cv_have_pretty_function) |
| if test "$gst_cv_have_pretty_function" = yes; then |
| AC_DEFINE(HAVE_PRETTY_FUNCTION, 1, |
| [defined if the compiler implements __PRETTY_FUNCTION__]) |
| fi |
| |
| dnl #2: __FUNCTION__ |
| AC_MSG_CHECKING(whether $CC implements __FUNCTION__) |
| AC_CACHE_VAL(gst_cv_have_function,[ |
| AC_TRY_LINK([#include <stdio.h>], |
| [printf("%s", __FUNCTION__);], |
| gst_cv_have_function=yes, |
| gst_cv_have_function=no) |
| ]) |
| AC_MSG_RESULT($gst_cv_have_function) |
| if test "$gst_cv_have_function" = yes; then |
| AC_DEFINE(HAVE_FUNCTION, 1, |
| [defined if the compiler implements __FUNCTION__]) |
| fi |
| |
| dnl #3: __func__ |
| AC_MSG_CHECKING(whether $CC implements __func__) |
| AC_CACHE_VAL(gst_cv_have_func,[ |
| AC_TRY_LINK([#include <stdio.h>], |
| [printf("%s", __func__);], |
| gst_cv_have_func=yes, |
| gst_cv_have_func=no) |
| ]) |
| AC_MSG_RESULT($gst_cv_have_func) |
| if test "$gst_cv_have_func" = yes; then |
| AC_DEFINE(HAVE_FUNC, 1, |
| [defined if the compiler implements __func__]) |
| fi |
| |
| dnl now define FUNCTION to whatever works, and fallback to "" |
| if test "$gst_cv_have_pretty_function" = yes; then |
| function=__PRETTY_FUNCTION__ |
| else |
| if test "$gst_cv_have_function" = yes; then |
| function=__FUNCTION__ |
| else |
| if test "$gst_cv_have_func" = yes; then |
| function=__func__ |
| else |
| function=\"\" |
| fi |
| fi |
| fi |
| AC_DEFINE_UNQUOTED(GST_FUNCTION, $function, [macro to use to show function name]) |
| ]) |
