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ezstream/m4/libogg.m4

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dnl $Id$
dnl # Check for a working installation of libogg.
dnl # Provides appropriate --with configuration options, fills and substitutes
dnl # the LIBOGG_CFLAGS, LIBOGG_CPPFLAGS, LIBOGG_LDFLAGS and LIBOGG_LIBS
dnl # variables accordingly.
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 # For LIBOGG_CFLAGS, LIBOGG_CPPFLAGS, LIBOGG_LDFLAGS and LIBOGG_LIBS:
dnl # AX_CHECK_LIBOGG([LIBOGG-VERSION], [ACTION-IF-FOUND],
dnl # [ACTION-IF-NOT-FOUND])
AC_DEFUN([AX_CHECK_LIBOGG],
[
AC_REQUIRE([PKG_PROG_PKG_CONFIG])
AC_ARG_VAR([LIBOGG_CFLAGS],
[C compiler flags for libogg])
AC_ARG_VAR([LIBOGG_CPPFLAGS],
[C preprocessor flags for libogg])
AC_ARG_VAR([LIBOGG_LDFLAGS],
[linker flags for libogg])
AC_ARG_VAR([LIBOGG_LIBS],
[libraries to use for libogg])
if test x"${prefix}" = "xNONE"; then
ax_check_libogg_prefix="/usr/local"
else
ax_check_libogg_prefix="${prefix}"
fi
AC_CACHE_VAL([local_cv_have_lib_libogg],
[
local_cv_have_lib_libogg=no
PKG_CONFIG_PATH="${PKG_CONFIG_PATH}:${ax_check_libogg_prefix}/lib/pkgconfig"
if test -z "${PKG_CONFIG}"; then
AC_MSG_ERROR([The pkg-config utility is required.], [1])
fi
dnl ####### BEGIN CHECK ######
PKG_CHECK_EXISTS([ogg $1], [
dnl ##########################
libogg_libs_autodetect=no
if test -z "${LIBOGG_CFLAGS}"; then
LIBOGG_CFLAGS="`${PKG_CONFIG} --cflags-only-other ogg`"
fi
if test -z "${LIBOGG_CPPFLAGS}"; then
LIBOGG_CPPFLAGS="`${PKG_CONFIG} --cflags-only-I ogg`"
fi
if test -z "${LIBOGG_LDFLAGS}"; then
LIBOGG_LDFLAGS="\
`${PKG_CONFIG} --libs-only-L ogg` \
`${PKG_CONFIG} --libs-only-other ogg` \
"
fi
if test -z "${LIBOGG_LIBS}"; then
LIBOGG_LIBS="`${PKG_CONFIG} --libs-only-l ogg`"
libogg_libs_autodetect=yes
fi
ax_check_libogg_save_CFLAGS="${CFLAGS}"
ax_check_libogg_save_CPPFLAGS="${CPPFLAGS}"
ax_check_libogg_save_LDFLAGS="${LDFLAGS}"
ax_check_libogg_save_LIBS="${LIBS}"
AC_LANG_PUSH([C])
CFLAGS="${CFLAGS} ${LIBOGG_CFLAGS}"
CPPFLAGS="${CPPFLAGS} ${LIBOGG_CPPFLAGS}"
LDFLAGS="${LDFLAGS} ${LIBOGG_LDFLAGS}"
LIBS="${LIBOGG_LIBS} ${LIBS}"
AC_CHECK_HEADER([ogg/ogg.h],
[
AC_MSG_CHECKING([if libogg works])
AC_LINK_IFELSE(
[AC_LANG_PROGRAM(
[[
#include <stdlib.h>
#include <ogg/ogg.h>
]],
[[
ogg_sync_init(NULL);
]]
)],
[
AC_MSG_RESULT([yes])
local_cv_have_lib_libogg=yes
],
[
AC_MSG_RESULT([no])
]
)
])
CFLAGS="${ax_check_libogg_save_CFLAGS}"
CPPFLAGS="${ax_check_libogg_save_CPPFLAGS}"
LDFLAGS="${ax_check_libogg_save_LDFLAGS}"
LIBS="${ax_check_libogg_save_LIBS}"
AC_LANG_POP([C])
dnl ####### END CHECK ########
], [])
dnl ##########################
])
AC_MSG_CHECKING([for libogg $1])
if test x"${local_cv_have_lib_libogg}" = "xyes"; then
AC_MSG_RESULT([yes])
:
$2
else
AC_MSG_RESULT([no])
:
$3
fi
])