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ezstream/m4/libxml2.m4

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dnl # Check for a working installation of libxml (version 2.)
dnl # Provides appropriate --with configuration options, fills the
dnl # LIBXML2_CFLAGS, LIBXML2_CPPFLAGS, LIBXML2_LDFLAGS and LIBXML2_LIBS
dnl # variables accordingly.
dnl # Copyright (c) 2008, 2009 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 LIBXML2_CFLAGS, LIBXML2_CPPFLAGS, LIBXML2_LDFLAGS and LIBXML2_LIBS:
dnl # AX_CHECK_LIBXML2([LIBXML2-VERSION], [ACTION-IF-FOUND],
dnl # [ACTION-IF-NOT-FOUND])
AC_DEFUN([_AX_CHECK_LIBXML2_OPTS],
[
AC_REQUIRE([PKG_PROG_PKG_CONFIG])
if test -z "${PKG_CONFIG}"; then
AC_MSG_ERROR([The pkg-config utility is required.], [1])
fi
AC_ARG_VAR([LIBXML2_CFLAGS],
[C compiler flags for libxml2])
AC_ARG_VAR([LIBXML2_CPPFLAGS],
[C preprocessor flags for libxml2])
AC_ARG_VAR([LIBXML2_LDFLAGS],
[linker flags for libxml2])
have_libxml2_includes=""
have_libxml2_libs=""
want_libxml2="auto"
AC_ARG_WITH([libxml2],
[AS_HELP_STRING([--with-libxml2=PFX],
[prefix where the libxml2 header files and library are installed (default: autodetect)])],
[
case "${withval}" in
yes)
want_libxml2="yes"
;;
no)
want_libxml2="no"
;;
*)
have_libxml2_prefix="${withval}"
want_libxml2="yes"
;;
esac
]
)
AC_ARG_WITH([libxml2-includes],
[AS_HELP_STRING([--with-libxml2-includes=DIR],
[directory where libxml2 header files are installed (optional)]) ],
[
case "${withval}" in
yes|no) ;;
*)
have_libxml2_includes="${withval}"
;;
esac
]
)
AC_ARG_WITH([libxml2-libs],
[AS_HELP_STRING([--with-libxml2-libs=DIR],
[directory where libxml2 is installed (optional)]) ],
[
case "${withval}" in
yes|no) ;;
*)
have_libxml2_libs="${withval}"
;;
esac
]
)
AC_CACHE_VAL([local_cv_have_lib_libxml2_opts],
[
ax_check_libxml2_xml2_pc="no"
PKG_CHECK_EXISTS([libxml-2.0], [ax_check_libxml2_xml2_pc=yes])
if test -z "${LIBXML2_CFLAGS}" \
-a x"${ax_check_libxml2_xml2_pc}" = "xyes"; then
LIBXML2_CFLAGS="`${PKG_CONFIG} --cflags-only-other libxml-2.0`"
fi
if test -n "${LIBXML2_CPPFLAGS}"; then
if test -n "${have_libxml2_includes}"; then
LIBXML2_CPPFLAGS="${LIBXML2_CPPFLAGS} -I${have_libxml2_includes}"
fi
else
if test -n "${have_libxml2_includes}"; then
LIBXML2_CPPFLAGS="-I${have_libxml2_includes}"
else
if test x"${want_libxml2}" = "xauto" \
-a x"${ax_check_libxml2_xml2_pc}" = "xyes"; then
LIBXML2_CPPFLAGS="`${PKG_CONFIG} --cflags-only-I libxml-2.0`"
elif test -n "${have_libxml2_prefix}"; then
LIBXML2_CPPFLAGS="-I${have_libxml2_prefix}/include"
fi
fi
fi
if test -n "${LIBXML2_LDFLAGS}"; then
if test -n "${have_libxml2_libs}"; then
LIBXML2_LDFLAGS="-L${have_libxml2_libs} ${LIBXML2_LDFLAGS}"
fi
else
if test -n "${have_libxml2_libs}"; then
LIBXML2_LDFLAGS="-L${have_libxml2_libs}"
else
if test x"${want_libxml2}" = "xauto" \
-a x"${ax_check_libxml2_xml2_pc}" = "xyes"; then
LIBXML2_LDFLAGS=" \
`${PKG_CONFIG} --libs-only-L libxml-2.0` \
`${PKG_CONFIG} --libs-only-other libxml-2.0` \
"
elif test -n "${have_libxml2_prefix}"; then
LIBXML2_LDFLAGS="-L${have_libxml2_prefix}/lib"
fi
fi
fi
local_cv_have_lib_libxml2_opts=yes
])
])
AC_DEFUN([AX_CHECK_LIBXML2],
[
AC_REQUIRE([_AX_CHECK_LIBXML2_OPTS])
AC_ARG_VAR([LIBXML2_LIBS],
[libraries to use for libxml2])
AC_CACHE_VAL([local_cv_have_lib_libxml2],
[
local_cv_have_lib_libxml2=no
if test x"${want_libxml2}" != "xno"; then # want_libxml2 != no
if test -z "${PKG_CONFIG}"; then
AC_MSG_ERROR([The pkg-config utility is required.], [1])
fi
dnl ####### BEGIN CHECK ######
PKG_CHECK_EXISTS([libxml-2.0 $1], [
dnl ##########################
libxml2_libs_autodetect=no
if test -z "${LIBXML2_LIBS}"; then
LIBXML2_LIBS="`${PKG_CONFIG} --libs-only-l libxml-2.0`"
libxml2_libs_autodetect=yes
fi
ax_check_libxml2_save_CFLAGS="${CFLAGS}"
ax_check_libxml2_save_CPPFLAGS="${CPPFLAGS}"
ax_check_libxml2_save_LDFLAGS="${LDFLAGS}"
ax_check_libxml2_save_LIBS="${LIBS}"
AC_LANG_PUSH([C])
CFLAGS="${CFLAGS} ${LIBXML2_CFLAGS}"
CPPFLAGS="${CPPFLAGS} ${LIBXML2_CPPFLAGS}"
LDFLAGS="${LDFLAGS} ${LIBXML2_LDFLAGS}"
LIBS="${LIBXML2_LIBS} ${LIBS}"
AC_CHECK_HEADER([libxml/parser.h],
[
AC_MSG_CHECKING([if libxml2 works])
AC_LINK_IFELSE(
[AC_LANG_PROGRAM(
[[
#include <stdlib.h>
#include <libxml/parser.h>
]],
[[
xmlParseFile(NULL);
]])],
[
AC_MSG_RESULT([yes])
local_cv_have_lib_libxml2=yes
],
[
AC_MSG_RESULT([no])
if test x"${libxml2_libs_autodetect}" = "xyes"; then
LIBXML2_LIBS="`${PKG_CONFIG} --static --libs-only-l libxml-2.0`"
LIBS="${LIBXML2_LIBS} ${ax_check_libxml2_save_LIBS}"
AC_MSG_CHECKING([if libxml2 works with explicit dependencies])
AC_LINK_IFELSE(
[AC_LANG_PROGRAM(
[[
#include <stdlib.h>
#include <libxml/parser.h>
]],
[[
xmlParseFile(NULL);
]])],
[
AC_MSG_RESULT([yes])
local_cv_have_lib_libxml2=yes
],
[
AC_MSG_RESULT([no])
]
)
fi
]
)
])
CFLAGS="${ax_check_libxml2_save_CFLAGS}"
CPPFLAGS="${ax_check_libxml2_save_CPPFLAGS}"
LDFLAGS="${ax_check_libxml2_save_LDFLAGS}"
LIBS="${ax_check_libxml2_save_LIBS}"
AC_LANG_POP([C])
dnl ####### END CHECK ########
], [])
dnl ##########################
fi # want_libxml2 != no
])
AC_MSG_CHECKING([for libxml2 $1])
if test x"${local_cv_have_lib_libxml2}" = "xyes"; then
AC_MSG_RESULT([yes])
:
$2
else
AC_MSG_RESULT([no])
:
$3
fi
])