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ezstream/m4/progname.m4
moritz ca84146c77 Update m4 macros, allowing for more easy control over the build process among
other things. Fix a silly bug in --enable-debug while there.


git-svn-id: https://svn.xiph.org/trunk/ezstream@16149 0101bb08-14d6-0310-b084-bc0e0c8e3800
2009-06-21 14:21:32 +00:00

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dnl # $Id$
dnl # Check whether libc defines __progname. Defines HAVE___PROGNAME, if
dnl # applicable. This check is heavily inspired by the one in OpenNTPd
dnl # (portable.)
dnl # Copyright (c) 2008 Moritz Grimm <mgrimm@mrsserver.net>
dnl #
dnl # Permission to use, copy, modify, and distribute this software for any
dnl # purpose with or without fee is hereby granted, provided that the above
dnl # copyright notice and this permission notice appear in all copies.
dnl #
dnl # THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
dnl # WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
dnl # MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
dnl # ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
dnl # WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
dnl # ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
dnl # OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
dnl # AX_CHECK___PROGNAME([ACTION-IF-FOUND], [ACTION-IF-NOT-FOUND])
AC_DEFUN([AX_CHECK___PROGNAME],
[
AC_MSG_CHECKING([whether libc defines __progname])
AC_CACHE_VAL([local_cv_libc_defines___progname],
[
AC_LANG_PUSH([C])
AC_LINK_IFELSE(
[AC_LANG_PROGRAM(
[[
#include <stdio.h>
]],
[[
extern char *__progname;
printf("%s", __progname);
]])],
[local_cv_libc_defines___progname=yes],
[local_cv_libc_defines___progname=no]
)
AC_LANG_POP([C])
])
if test x"${local_cv_libc_defines___progname}" = "xyes"; then
AC_MSG_RESULT([yes])
AC_DEFINE([HAVE___PROGNAME], [1],
[Define whether libc defines __progname.])
:
$1
else
AC_MSG_RESULT([no])
:
$2
fi
])