1# Configure paths for libmikmod
2#
3# Derived from glib.m4 (Owen Taylor 97-11-3)
4# Improved by Chris Butler
5#
6
7dnl AM_PATH_LIBMIKMOD([MINIMUM-VERSION, [ACTION-IF-FOUND [, ACTION-IF-NOT-FOUND ]]])
8dnl Test for libmikmod, and define LIBMIKMOD_CFLAGS, LIBMIKMOD_LIBS and
9dnl LIBMIKMOD_LDADD
10dnl
11AC_DEFUN([AM_PATH_LIBMIKMOD],
12[dnl
13dnl Get the cflags and libraries from the libmikmod-config script
14dnl
15AC_ARG_WITH(libmikmod-prefix,
16  AC_HELP_STRING([--with-libmikmod-prefix=PFX],
17                 [prefix where libmikmod is installed (optional)]),
18  libmikmod_config_prefix="$withval", libmikmod_config_prefix="")
19
20AC_ARG_WITH(libmikmod-exec-prefix,
21  AC_HELP_STRING([--with-libmikmod-exec-prefix=PFX],
22                 [exec prefix where libmikmod is installed (optional)]),
23  libmikmod_config_exec_prefix="$withval", libmikmod_config_exec_prefix="")
24
25AC_ARG_ENABLE(libmikmodtest,
26  AC_HELP_STRING([--disable-libmikmodtest],
27                 [Do not try to compile and run a test libmikmod program]),
28  , enable_libmikmodtest=yes)
29
30  if test x$libmikmod_config_exec_prefix != x ; then
31     libmikmod_config_args="$libmikmod_config_args --exec-prefix=$libmikmod_config_exec_prefix"
32     if test x${LIBMIKMOD_CONFIG+set} != xset ; then
33        LIBMIKMOD_CONFIG=$libmikmod_config_exec_prefix/bin/libmikmod-config
34     fi
35  fi
36  if test x$libmikmod_config_prefix != x ; then
37     libmikmod_config_args="$libmikmod_config_args --prefix=$libmikmod_config_prefix"
38     if test x${LIBMIKMOD_CONFIG+set} != xset ; then
39        LIBMIKMOD_CONFIG=$libmikmod_config_prefix/bin/libmikmod-config
40     fi
41  fi
42
43  AC_PATH_PROG(LIBMIKMOD_CONFIG, libmikmod-config, no)
44  min_libmikmod_version=ifelse([$1], ,3.1.5,$1)
45  AC_MSG_CHECKING(for libmikmod - version >= $min_libmikmod_version)
46  no_libmikmod=""
47  if test "$LIBMIKMOD_CONFIG" = "no" ; then
48    no_libmikmod=yes
49  else
50    LIBMIKMOD_CFLAGS=`$LIBMIKMOD_CONFIG $libmikmod_config_args --cflags`
51    LIBMIKMOD_LIBS=`$LIBMIKMOD_CONFIG $libmikmod_config_args --libs`
52    LIBMIKMOD_LDADD=`$LIBMIKMOD_CONFIG $libmikmod_config_args --ldadd`
53    libmikmod_config_major_version=`$LIBMIKMOD_CONFIG $libmikmod_config_args --version | \
54           sed 's/\([[0-9]]*\).\([[0-9]]*\).\([[0-9]]*\).*/\1/'`
55    libmikmod_config_minor_version=`$LIBMIKMOD_CONFIG $libmikmod_config_args --version | \
56           sed 's/\([[0-9]]*\).\([[0-9]]*\).\([[0-9]]*\).*/\2/'`
57    libmikmod_config_micro_version=`$LIBMIKMOD_CONFIG $libmikmod_config_args --version | \
58           sed 's/\([[0-9]]*\).\([[0-9]]*\).\([[0-9]]*\).*/\3/'`
59    if test "x$enable_libmikmodtest" = "xyes" ; then
60      ac_save_CFLAGS="$CFLAGS"
61      ac_save_LIBS="$LIBS"
62	  AC_LANG_SAVE
63	  AC_LANG_C
64      CFLAGS="$CFLAGS $LIBMIKMOD_CFLAGS $LIBMIKMOD_LDADD"
65      LIBS="$LIBMIKMOD_LIBS $LIBS"
66dnl
67dnl Now check if the installed libmikmod is sufficiently new. (Also sanity
68dnl checks the results of libmikmod-config to some extent
69dnl
70      rm -f conf.mikmodtest
71      AC_TRY_RUN([
72#include <mikmod.h>
73#include <stdio.h>
74#include <stdlib.h>
75#include <string.h>
76
77char* my_strdup (char *str)
78{
79  char *new_str;
80
81  if (str) {
82    new_str = malloc ((strlen (str) + 1) * sizeof(char));
83    strcpy (new_str, str);
84  } else
85    new_str = NULL;
86
87  return new_str;
88}
89
90int main()
91{
92  int major,minor,micro;
93  int libmikmod_major_version,libmikmod_minor_version,libmikmod_micro_version;
94  char *tmp_version;
95
96  system("touch conf.mikmodtest");
97
98  /* HP/UX 9 (%@#!) writes to sscanf strings */
99  tmp_version = my_strdup("$min_libmikmod_version");
100  if (sscanf(tmp_version, "%d.%d.%d", &major, &minor, &micro) != 3) {
101     printf("%s, bad version string\n", "$min_libmikmod_version");
102     exit(1);
103   }
104
105  libmikmod_major_version=(MikMod_GetVersion() >> 16) & 255;
106  libmikmod_minor_version=(MikMod_GetVersion() >>  8) & 255;
107  libmikmod_micro_version=(MikMod_GetVersion()      ) & 255;
108
109  if ((libmikmod_major_version != $libmikmod_config_major_version) ||
110      (libmikmod_minor_version != $libmikmod_config_minor_version) ||
111      (libmikmod_micro_version != $libmikmod_config_micro_version))
112    {
113      printf("\n*** 'libmikmod-config --version' returned %d.%d.%d, but libmikmod (%d.%d.%d)\n",
114             $libmikmod_config_major_version, $libmikmod_config_minor_version, $libmikmod_config_micro_version,
115             libmikmod_major_version, libmikmod_minor_version, libmikmod_micro_version);
116      printf ("*** was found! If libmikmod-config was correct, then it is best\n");
117      printf ("*** to remove the old version of libmikmod. You may also be able to fix the error\n");
118      printf("*** by modifying your LD_LIBRARY_PATH enviroment variable, or by editing\n");
119      printf("*** /etc/ld.so.conf. Make sure you have run ldconfig if that is\n");
120      printf("*** required on your system.\n");
121      printf("*** If libmikmod-config was wrong, set the environment variable LIBMIKMOD_CONFIG\n");
122      printf("*** to point to the correct copy of libmikmod-config, and remove the file config.cache\n");
123      printf("*** before re-running configure\n");
124    }
125  else if ((libmikmod_major_version != LIBMIKMOD_VERSION_MAJOR) ||
126	   (libmikmod_minor_version != LIBMIKMOD_VERSION_MINOR) ||
127           (libmikmod_micro_version != LIBMIKMOD_REVISION))
128    {
129      printf("*** libmikmod header files (version %ld.%ld.%ld) do not match\n",
130	     LIBMIKMOD_VERSION_MAJOR, LIBMIKMOD_VERSION_MINOR, LIBMIKMOD_REVISION);
131      printf("*** library (version %d.%d.%d)\n",
132	     libmikmod_major_version, libmikmod_minor_version, libmikmod_micro_version);
133    }
134  else
135    {
136      if ((libmikmod_major_version > major) ||
137        ((libmikmod_major_version == major) && (libmikmod_minor_version > minor)) ||
138        ((libmikmod_major_version == major) && (libmikmod_minor_version == minor) && (libmikmod_micro_version >= micro)))
139      {
140        return 0;
141       }
142     else
143      {
144        printf("\n*** An old version of libmikmod (%d.%d.%d) was found.\n",
145               libmikmod_major_version, libmikmod_minor_version, libmikmod_micro_version);
146        printf("*** You need a version of libmikmod newer than %d.%d.%d.\n",
147	       major, minor, micro);
148        printf("***\n");
149        printf("*** If you have already installed a sufficiently new version, this error\n");
150        printf("*** probably means that the wrong copy of the libmikmod-config shell script is\n");
151        printf("*** being found. The easiest way to fix this is to remove the old version\n");
152        printf("*** of libmikmod, but you can also set the LIBMIKMOD_CONFIG environment to point to the\n");
153        printf("*** correct copy of libmikmod-config. (In this case, you will have to\n");
154        printf("*** modify your LD_LIBRARY_PATH enviroment variable, or edit /etc/ld.so.conf\n");
155        printf("*** so that the correct libraries are found at run-time))\n");
156      }
157    }
158  return 1;
159}
160],, no_libmikmod=yes,[echo $ac_n "cross compiling; assumed OK... $ac_c"])
161       CFLAGS="$ac_save_CFLAGS"
162       LIBS="$ac_save_LIBS"
163	   AC_LANG_RESTORE
164     fi
165  fi
166  if test "x$no_libmikmod" = x ; then
167     AC_MSG_RESULT([yes, `$LIBMIKMOD_CONFIG --version`])
168     ifelse([$2], , :, [$2])
169  else
170     AC_MSG_RESULT(no)
171     if test "$LIBMIKMOD_CONFIG" = "no" ; then
172       echo "*** The libmikmod-config script installed by libmikmod could not be found"
173       echo "*** If libmikmod was installed in PREFIX, make sure PREFIX/bin is in"
174       echo "*** your path, or set the LIBMIKMOD_CONFIG environment variable to the"
175       echo "*** full path to libmikmod-config."
176     else
177       if test -f conf.mikmodtest ; then
178        :
179       else
180          echo "*** Could not run libmikmod test program, checking why..."
181          CFLAGS="$CFLAGS $LIBMIKMOD_CFLAGS"
182          LIBS="$LIBS $LIBMIKMOD_LIBS"
183		  AC_LANG_SAVE
184		  AC_LANG_C
185          AC_TRY_LINK([
186#include <mikmod.h>
187#include <stdio.h>
188],      [ return (MikMod_GetVersion()!=0); ],
189        [ echo "*** The test program compiled, but did not run. This usually means"
190          echo "*** that the run-time linker is not finding libmikmod or finding the wrong"
191          echo "*** version of libmikmod. If it is not finding libmikmod, you'll need to set your"
192          echo "*** LD_LIBRARY_PATH environment variable, or edit /etc/ld.so.conf to point"
193          echo "*** to the installed location. Also, make sure you have run ldconfig if that"
194          echo "*** is required on your system."
195	  echo "***"
196          echo "*** If you have an old version installed, it is best to remove it, although"
197          echo "*** you may also be able to get things to work by modifying LD_LIBRARY_PATH"],
198        [ echo "*** The test program failed to compile or link. See the file config.log for the"
199          echo "*** exact error that occured. This usually means libmikmod was incorrectly installed"
200          echo "*** or that you have moved libmikmod since it was installed. In the latter case, you"
201          echo "*** may want to edit the libmikmod-config script: $LIBMIKMOD_CONFIG" ])
202          CFLAGS="$ac_save_CFLAGS"
203          LIBS="$ac_save_LIBS"
204		  AC_LANG_RESTORE
205       fi
206     fi
207     LIBMIKMOD_CFLAGS=""
208     LIBMIKMOD_LIBS=""
209     LIBMIKMOD_LDADD=""
210     ifelse([$3], , :, [$3])
211  fi
212  AC_SUBST(LIBMIKMOD_CFLAGS)
213  AC_SUBST(LIBMIKMOD_LIBS)
214  AC_SUBST(LIBMIKMOD_LDADD)
215  rm -f conf.mikmodtest
216])
217