1# Configure paths for LIBXML2
2# Mike Hommey 2004-06-19
3# use CPPFLAGS instead of CFLAGS
4# Toshio Kuratomi 2001-04-21
5# Adapted from:
6# Configure paths for GLIB
7# Owen Taylor     97-11-3
8
9dnl AM_PATH_XML2([MINIMUM-VERSION, [ACTION-IF-FOUND [, ACTION-IF-NOT-FOUND]]])
10dnl Test for XML, and define XML_CPPFLAGS and XML_LIBS
11dnl
12AC_DEFUN([AM_PATH_XML2],[ 
13AC_ARG_WITH(xml-prefix,
14            [  --with-xml-prefix=PFX   Prefix where libxml is installed (optional)],
15            xml_config_prefix="$withval", xml_config_prefix="")
16AC_ARG_WITH(xml-exec-prefix,
17            [  --with-xml-exec-prefix=PFX Exec prefix where libxml is installed (optional)],
18            xml_config_exec_prefix="$withval", xml_config_exec_prefix="")
19AC_ARG_ENABLE(xmltest,
20              [  --disable-xmltest       Do not try to compile and run a test LIBXML program],,
21              enable_xmltest=yes)
22
23  if test x$xml_config_exec_prefix != x ; then
24     xml_config_args="$xml_config_args"
25     if test x${XML2_CONFIG+set} != xset ; then
26        XML2_CONFIG=$xml_config_exec_prefix/bin/xml2-config
27     fi
28  fi
29  if test x$xml_config_prefix != x ; then
30     xml_config_args="$xml_config_args --prefix=$xml_config_prefix"
31     if test x${XML2_CONFIG+set} != xset ; then
32        XML2_CONFIG=$xml_config_prefix/bin/xml2-config
33     fi
34  fi
35
36  AC_PATH_PROG(XML2_CONFIG, xml2-config, no)
37  min_xml_version=ifelse([$1], ,2.0.0,[$1])
38  AC_MSG_CHECKING(for libxml - version >= $min_xml_version)
39  no_xml=""
40  if test "$XML2_CONFIG" = "no" ; then
41    no_xml=yes
42  else
43    XML_CPPFLAGS=`$XML2_CONFIG $xml_config_args --cflags`
44    XML_LIBS=`$XML2_CONFIG $xml_config_args --libs`
45    xml_config_major_version=`$XML2_CONFIG $xml_config_args --version | \
46           sed 's/\([[0-9]]*\).\([[0-9]]*\).\([[0-9]]*\)/\1/'`
47    xml_config_minor_version=`$XML2_CONFIG $xml_config_args --version | \
48           sed 's/\([[0-9]]*\).\([[0-9]]*\).\([[0-9]]*\)/\2/'`
49    xml_config_micro_version=`$XML2_CONFIG $xml_config_args --version | \
50           sed 's/\([[0-9]]*\).\([[0-9]]*\).\([[0-9]]*\)/\3/'`
51    if test "x$enable_xmltest" = "xyes" ; then
52      ac_save_CPPFLAGS="$CPPFLAGS"
53      ac_save_LIBS="$LIBS"
54      CPPFLAGS="$CPPFLAGS $XML_CPPFLAGS"
55      LIBS="$XML_LIBS $LIBS"
56dnl
57dnl Now check if the installed libxml is sufficiently new.
58dnl (Also sanity checks the results of xml2-config to some extent)
59dnl
60      rm -f conf.xmltest
61      AC_TRY_RUN([
62#include <stdlib.h>
63#include <stdio.h>
64#include <string.h>
65#include <libxml/xmlversion.h>
66
67int 
68main()
69{
70  int xml_major_version, xml_minor_version, xml_micro_version;
71  int major, minor, micro;
72  char *tmp_version;
73
74  system("touch conf.xmltest");
75
76  /* Capture xml2-config output via autoconf/configure variables */
77  /* HP/UX 9 (%@#!) writes to sscanf strings */
78  tmp_version = (char *)strdup("$min_xml_version");
79  if (sscanf(tmp_version, "%d.%d.%d", &major, &minor, &micro) != 3) {
80     printf("%s, bad version string from xml2-config\n", "$min_xml_version");
81     exit(1);
82   }
83   free(tmp_version);
84
85   /* Capture the version information from the header files */
86   tmp_version = (char *)strdup(LIBXML_DOTTED_VERSION);
87   if (sscanf(tmp_version, "%d.%d.%d", &xml_major_version, &xml_minor_version, &xml_micro_version) != 3) {
88     printf("%s, bad version string from libxml includes\n", "LIBXML_DOTTED_VERSION");
89     exit(1);
90   }
91   free(tmp_version);
92
93 /* Compare xml2-config output to the libxml headers */
94  if ((xml_major_version != $xml_config_major_version) ||
95      (xml_minor_version != $xml_config_minor_version) ||
96      (xml_micro_version != $xml_config_micro_version))
97    {
98      printf("*** libxml header files (version %d.%d.%d) do not match\n",
99         xml_major_version, xml_minor_version, xml_micro_version);
100      printf("*** xml2-config (version %d.%d.%d)\n",
101         $xml_config_major_version, $xml_config_minor_version, $xml_config_micro_version);
102      return 1;
103    } 
104/* Compare the headers to the library to make sure we match */
105  /* Less than ideal -- doesn't provide us with return value feedback, 
106   * only exits if there's a serious mismatch between header and library.
107   */
108    LIBXML_TEST_VERSION;
109
110    /* Test that the library is greater than our minimum version */
111    if ((xml_major_version > major) ||
112        ((xml_major_version == major) && (xml_minor_version > minor)) ||
113        ((xml_major_version == major) && (xml_minor_version == minor) &&
114        (xml_micro_version >= micro)))
115      {
116        return 0;
117       }
118     else
119      {
120        printf("\n*** An old version of libxml (%d.%d.%d) was found.\n",
121               xml_major_version, xml_minor_version, xml_micro_version);
122        printf("*** You need a version of libxml newer than %d.%d.%d. The latest version of\n",
123           major, minor, micro);
124        printf("*** libxml is always available from ftp://ftp.xmlsoft.org.\n");
125        printf("***\n");
126        printf("*** If you have already installed a sufficiently new version, this error\n");
127        printf("*** probably means that the wrong copy of the xml2-config shell script is\n");
128        printf("*** being found. The easiest way to fix this is to remove the old version\n");
129        printf("*** of LIBXML, but you can also set the XML2_CONFIG environment to point to the\n");
130        printf("*** correct copy of xml2-config. (In this case, you will have to\n");
131        printf("*** modify your LD_LIBRARY_PATH enviroment variable, or edit /etc/ld.so.conf\n");
132        printf("*** so that the correct libraries are found at run-time))\n");
133    }
134  return 1;
135}
136],, no_xml=yes,[echo $ac_n "cross compiling; assumed OK... $ac_c"])
137       CPPFLAGS="$ac_save_CPPFLAGS"
138       LIBS="$ac_save_LIBS"
139     fi
140  fi
141
142  if test "x$no_xml" = x ; then
143     AC_MSG_RESULT(yes (version $xml_config_major_version.$xml_config_minor_version.$xml_config_micro_version))
144     ifelse([$2], , :, [$2])     
145  else
146     AC_MSG_RESULT(no)
147     if test "$XML2_CONFIG" = "no" ; then
148       echo "*** The xml2-config script installed by LIBXML could not be found"
149       echo "*** If libxml was installed in PREFIX, make sure PREFIX/bin is in"
150       echo "*** your path, or set the XML2_CONFIG environment variable to the"
151       echo "*** full path to xml2-config."
152     else
153       if test -f conf.xmltest ; then
154        :
155       else
156          echo "*** Could not run libxml test program, checking why..."
157          CPPFLAGS="$CPPFLAGS $XML_CPPFLAGS"
158          LIBS="$LIBS $XML_LIBS"
159          AC_TRY_LINK([
160#include <libxml/xmlversion.h>
161#include <stdio.h>
162],      [ LIBXML_TEST_VERSION; return 0;],
163        [ echo "*** The test program compiled, but did not run. This usually means"
164          echo "*** that the run-time linker is not finding LIBXML or finding the wrong"
165          echo "*** version of LIBXML. If it is not finding LIBXML, you'll need to set your"
166          echo "*** LD_LIBRARY_PATH environment variable, or edit /etc/ld.so.conf to point"
167          echo "*** to the installed location  Also, make sure you have run ldconfig if that"
168          echo "*** is required on your system"
169          echo "***"
170          echo "*** If you have an old version installed, it is best to remove it, although"
171          echo "*** you may also be able to get things to work by modifying LD_LIBRARY_PATH" ],
172        [ echo "*** The test program failed to compile or link. See the file config.log for the"
173          echo "*** exact error that occured. This usually means LIBXML was incorrectly installed"
174          echo "*** or that you have moved LIBXML since it was installed. In the latter case, you"
175          echo "*** may want to edit the xml2-config script: $XML2_CONFIG" ])
176          CPPFLAGS="$ac_save_CPPFLAGS"
177          LIBS="$ac_save_LIBS"
178       fi
179     fi
180
181     XML_CPPFLAGS=""
182     XML_LIBS=""
183     ifelse([$3], , :, [$3])
184  fi
185  AC_SUBST(XML_CPPFLAGS)
186  AC_SUBST(XML_LIBS)
187  rm -f conf.xmltest
188])
189