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# libxml.m4
# serial 10
dnl Copyright (C) 2006-2024 Free Software Foundation, Inc.
dnl This file is free software; the Free Software Foundation
dnl gives unlimited permission to copy and/or distribute it,
dnl with or without modifications, as long as this notice is preserved.
dnl From Bruno Haible.
dnl gl_LIBXML
dnl gives the user the option to decide whether to use the included or
dnl an external libxml.
dnl gl_LIBXML(FORCE-INCLUDED)
dnl forces the use of the included or an external libxml.
AC_DEFUN([gl_LIBXML],
[
AC_REQUIRE([AM_ICONV_LINK])
ifelse([$1], , [
AC_MSG_CHECKING([whether included libxml is requested])
AC_ARG_WITH([included-libxml],
[ --with-included-libxml use the libxml2 included here],
[gl_cv_libxml_force_included=$withval],
[gl_cv_libxml_force_included=no])
AC_MSG_RESULT([$gl_cv_libxml_force_included])
], [gl_cv_libxml_force_included=$1])
gl_cv_libxml_use_included="$gl_cv_libxml_force_included"
LIBXML=
LTLIBXML=
INCXML=
ifelse([$1], [yes], , [
if test "$gl_cv_libxml_use_included" != yes; then
dnl Figure out whether we can use a preinstalled libxml2, or have to use
dnl the included one.
AC_CACHE_VAL([gl_cv_libxml], [
gl_cv_libxml=no
gl_cv_LIBXML=
gl_cv_LTLIBXML=
gl_cv_INCXML=
gl_save_LIBS="$LIBS"
LIBS="$LIBS $LIBICONV"
dnl Search for libxml2 and define LIBXML2, LTLIBXML2 and INCXML2
dnl accordingly.
dnl Don't use xml2-config nor pkg-config, since it doesn't work when
dnl cross-compiling or when the C compiler in use is different from the
dnl one that built the library.
dnl Use a test program that tries to invoke xmlFree. On Cygwin 1.7.x,
dnl libxml2 is built in such a way that uses of xmlFree work fine with
dnl -Wl,--enable-auto-import but lead to a link error with
dnl -Wl,--disable-auto-import.
AC_LIB_LINKFLAGS_BODY([xml2])
LIBS="$gl_save_LIBS $LIBXML2 $LIBICONV"
AC_LINK_IFELSE(
[AC_LANG_PROGRAM(
[[#include <libxml/xmlversion.h>
#include <libxml/xmlmemory.h>
#include <libxml/xpath.h>
]],
[[xmlCheckVersion (0);
xmlFree ((void *) 0);
xmlXPathSetContextNode ((void *)0, (void *)0);
]])],
[gl_cv_libxml=yes
gl_cv_LIBXML="$LIBXML2 $LIBICONV"
gl_cv_LTLIBXML="$LTLIBXML2 $LTLIBICONV"
])
if test "$gl_cv_libxml" != yes; then
gl_save_CPPFLAGS="$CPPFLAGS"
CPPFLAGS="$CPPFLAGS $INCXML2"
AC_LINK_IFELSE(
[AC_LANG_PROGRAM(
[[#include <libxml/xmlversion.h>
#include <libxml/xmlmemory.h>
#include <libxml/xpath.h>
]],
[[xmlCheckVersion (0);
xmlFree ((void *) 0);
xmlXPathSetContextNode ((void *)0, (void *)0);
]])],
[gl_cv_libxml=yes
gl_cv_LIBXML="$LIBXML2 $LIBICONV"
gl_cv_LTLIBXML="$LTLIBXML2 $LTLIBICONV"
gl_cv_INCXML="$INCXML2"
])
if test "$gl_cv_libxml" != yes; then
dnl Often the include files are installed in /usr/include/libxml2.
dnl In libxml2-2.5, <libxml/xmlversion.h> is self-contained.
dnl In libxml2-2.6, it includes <libxml/xmlexports.h> which is
dnl self-contained.
libxml2_include_dir=
AC_PREPROC_IFELSE([AC_LANG_SOURCE([[#include <libxml2/libxml/xmlexports.h>]])],
[gl_ABSOLUTE_HEADER([libxml2/libxml/xmlexports.h])
libxml2_include_dir=`echo "$gl_cv_absolute_libxml2_libxml_xmlexports_h" | sed -e 's,.libxml.xmlexports\.h$,,'`
])
if test -z "$libxml2_include_dir"; then
AC_PREPROC_IFELSE([AC_LANG_SOURCE([[#include <libxml2/libxml/xmlversion.h>]])],
[gl_ABSOLUTE_HEADER([libxml2/libxml/xmlversion.h])
libxml2_include_dir=`echo "$gl_cv_absolute_libxml2_libxml_xmlversion_h" | sed -e 's,.libxml.xmlversion\.h$,,'`
])
fi
if test -n "$libxml2_include_dir" && test -d "$libxml2_include_dir"; then
CPPFLAGS="$gl_save_CPPFLAGS -I$libxml2_include_dir"
AC_LINK_IFELSE(
[AC_LANG_PROGRAM(
[[#include <libxml/xmlversion.h>
#include <libxml/xmlmemory.h>
#include <libxml/xpath.h>
]],
[[xmlCheckVersion (0);
xmlFree ((void *) 0);
xmlXPathSetContextNode ((void *)0, (void *)0);
]])],
[gl_cv_libxml=yes
gl_cv_LIBXML="$LIBXML2 $LIBICONV"
gl_cv_LTLIBXML="$LTLIBXML2 $LTLIBICONV"
gl_cv_INCXML="-I$libxml2_include_dir"
])
fi
fi
CPPFLAGS="$gl_save_CPPFLAGS"
fi
LIBS="$gl_save_LIBS"
])
AC_MSG_CHECKING([for libxml])
AC_MSG_RESULT([$gl_cv_libxml])
if test $gl_cv_libxml = yes; then
LIBXML="$gl_cv_LIBXML"
LTLIBXML="$gl_cv_LTLIBXML"
INCXML="$gl_cv_INCXML"
else
gl_cv_libxml_use_included=yes
fi
fi
])
AC_SUBST([LIBXML])
AC_SUBST([LTLIBXML])
AC_SUBST([INCXML])
AC_MSG_CHECKING([whether to use the included libxml])
AC_MSG_RESULT([$gl_cv_libxml_use_included])
if test "$gl_cv_libxml_use_included" = yes; then
LIBXML_H=
LIBXML_H="$LIBXML_H libxml/DOCBparser.h"
LIBXML_H="$LIBXML_H libxml/HTMLparser.h"
LIBXML_H="$LIBXML_H libxml/HTMLtree.h"
LIBXML_H="$LIBXML_H libxml/SAX2.h"
LIBXML_H="$LIBXML_H libxml/SAX.h"
LIBXML_H="$LIBXML_H libxml/c14n.h"
LIBXML_H="$LIBXML_H libxml/catalog.h"
LIBXML_H="$LIBXML_H libxml/chvalid.h"
LIBXML_H="$LIBXML_H libxml/debugXML.h"
LIBXML_H="$LIBXML_H libxml/dict.h"
LIBXML_H="$LIBXML_H libxml/encoding.h"
LIBXML_H="$LIBXML_H libxml/entities.h"
LIBXML_H="$LIBXML_H libxml/globals.h"
LIBXML_H="$LIBXML_H libxml/hash.h"
LIBXML_H="$LIBXML_H libxml/list.h"
LIBXML_H="$LIBXML_H libxml/nanoftp.h"
LIBXML_H="$LIBXML_H libxml/nanohttp.h"
LIBXML_H="$LIBXML_H libxml/parser.h"
LIBXML_H="$LIBXML_H libxml/parserInternals.h"
LIBXML_H="$LIBXML_H libxml/pattern.h"
LIBXML_H="$LIBXML_H libxml/relaxng.h"
LIBXML_H="$LIBXML_H libxml/schemasInternals.h"
LIBXML_H="$LIBXML_H libxml/schematron.h"
LIBXML_H="$LIBXML_H libxml/threads.h"
LIBXML_H="$LIBXML_H libxml/tree.h"
LIBXML_H="$LIBXML_H libxml/uri.h"
LIBXML_H="$LIBXML_H libxml/valid.h"
LIBXML_H="$LIBXML_H libxml/xinclude.h"
LIBXML_H="$LIBXML_H libxml/xlink.h"
LIBXML_H="$LIBXML_H libxml/xmlIO.h"
LIBXML_H="$LIBXML_H libxml/xmlautomata.h"
LIBXML_H="$LIBXML_H libxml/xmlerror.h"
LIBXML_H="$LIBXML_H libxml/xmlexports.h"
LIBXML_H="$LIBXML_H libxml/xmlmemory.h"
LIBXML_H="$LIBXML_H libxml/xmlmodule.h"
LIBXML_H="$LIBXML_H libxml/xmlreader.h"
LIBXML_H="$LIBXML_H libxml/xmlregexp.h"
LIBXML_H="$LIBXML_H libxml/xmlsave.h"
LIBXML_H="$LIBXML_H libxml/xmlschemas.h"
LIBXML_H="$LIBXML_H libxml/xmlschemastypes.h"
LIBXML_H="$LIBXML_H libxml/xmlstring.h"
LIBXML_H="$LIBXML_H libxml/xmlunicode.h"
LIBXML_H="$LIBXML_H libxml/xmlversion.h"
LIBXML_H="$LIBXML_H libxml/xmlwriter.h"
LIBXML_H="$LIBXML_H libxml/xpath.h"
LIBXML_H="$LIBXML_H libxml/xpathInternals.h"
LIBXML_H="$LIBXML_H libxml/xpointer.h"
AC_CHECK_HEADERS([arpa/inet.h ctype.h dlfcn.h dl.h errno.h \
fcntl.h float.h limits.h malloc.h math.h netdb.h \
netinet/in.h signal.h stdlib.h string.h \
strings.h sys/select.h sys/socket.h sys/stat.h \
sys/time.h sys/types.h time.h unistd.h])
AC_CHECK_HEADERS([arpa/nameser.h], [], [], [
#if HAVE_SYS_TYPES_H
# include <sys/types.h>
#endif
])
AC_CHECK_HEADERS([resolv.h], [], [], [
#if HAVE_SYS_TYPES_H
# include <sys/types.h>
#endif
#if HAVE_NETINET_IN_H
# include <netinet/in.h>
#endif
#if HAVE_ARPA_NAMESER_H
# include <arpa/nameser.h>
#endif
])
AC_CHECK_FUNCS([getaddrinfo localtime stat strftime])
dnl This relies on the va_copy replacement from the stdarg module.
AC_DEFINE([VA_COPY], [va_copy],
[Define to a working va_copy macro or replacement.])
dnl Don't bother checking for pthread.h and other multithread facilities.
dnl Don't bother checking for zlib.h and how to link with libz.
else
LIBXML_H=
fi
AC_SUBST([LIBXML_H])
AM_CONDITIONAL([INCLUDED_LIBXML],
[test "$gl_cv_libxml_use_included" = yes])
])
|
