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