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ezstream/m4/tree.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 for sys/tree.h and if it is recent enough by looking at a certain
dnl # macro. Defines HAVE_SYS_TREE_H if all conditions are met.
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_HEADER_TREE([REQUIRED-MACRO], [ACTION-IF-FOUND],
dnl # [ACTION-IF-NOT-FOUND])
AC_DEFUN([AX_HEADER_TREE],
[
if test x"$1" = "x"; then
_tree_macro="RB_INIT"
else
_tree_macro=$1
fi
AC_MSG_CHECKING([for ${_tree_macro} in sys/tree.h])
AC_CACHE_VAL([local_cv_header_sys_tree_h],
[
AC_COMPILE_IFELSE(
[AC_LANG_PROGRAM(
[[
#include <sys/tree.h>
#if !defined(${_tree_macro})
# error Required tree macro missing
#endif /* !${_tree_macro} */
]],
[[]])],
[local_cv_header_sys_tree_h=yes],
[local_cv_header_sys_tree_h=no])
])
if test x"${local_cv_header_sys_tree_h}" = "xyes"; then
AC_MSG_RESULT([yes])
AC_DEFINE([HAVE_SYS_TREE_H], [1],
[Define to 1 if you have a sufficiently recent <sys/tree.h> header.])
:
$2
else
AC_MSG_RESULT([no])
:
$3
fi
])