source: trunk/build_support/gsl.m4 @ 1313

Last change on this file since 1313 was 962, checked in by Peter, 14 years ago

setting svndigest:ignore property on file copied from gsl

  • Property svn:eol-style set to native
File size: 5.5 KB
Line 
1# Configure path for the GNU Scientific Library
2# Christopher R. Gabriel <cgabriel@linux.it>, April 2000
3
4
5AC_DEFUN([AX_PATH_GSL],
6[
7AC_ARG_WITH(gsl-prefix,[  --with-gsl-prefix=PFX   Prefix where GSL is installed (optional)],
8            gsl_prefix="$withval", gsl_prefix="")
9AC_ARG_WITH(gsl-exec-prefix,[  --with-gsl-exec-prefix=PFX Exec prefix where GSL is installed (optional)],
10            gsl_exec_prefix="$withval", gsl_exec_prefix="")
11AC_ARG_ENABLE(gsltest, [  --disable-gsltest       Do not try to compile and run a test GSL program],
12        , enable_gsltest=yes)
13
14  if test "x${GSL_CONFIG+set}" != xset ; then
15     if test "x$gsl_prefix" != x ; then
16         GSL_CONFIG="$gsl_prefix/bin/gsl-config"
17     fi
18     if test "x$gsl_exec_prefix" != x ; then
19        GSL_CONFIG="$gsl_exec_prefix/bin/gsl-config"
20     fi
21  fi
22
23  AC_PATH_PROG(GSL_CONFIG, gsl-config, no)
24  min_gsl_version=ifelse([$1], ,0.2.5,$1)
25  AC_MSG_CHECKING(for GSL - version >= $min_gsl_version)
26  no_gsl=""
27  if test "$GSL_CONFIG" = "no" ; then
28    no_gsl=yes
29  else
30    GSL_CFLAGS=`$GSL_CONFIG --cflags`
31    GSL_LIBS=`$GSL_CONFIG --libs`
32
33    gsl_major_version=`$GSL_CONFIG --version | \
34           sed 's/^\([[0-9]]*\).*/\1/'`
35    if test "x${gsl_major_version}" = "x" ; then
36       gsl_major_version=0
37    fi
38
39    gsl_minor_version=`$GSL_CONFIG --version | \
40           sed 's/^\([[0-9]]*\)\.\{0,1\}\([[0-9]]*\).*/\2/'`
41    if test "x${gsl_minor_version}" = "x" ; then
42       gsl_minor_version=0
43    fi
44
45    gsl_micro_version=`$GSL_CONFIG --version | \
46           sed 's/^\([[0-9]]*\)\.\{0,1\}\([[0-9]]*\)\.\{0,1\}\([[0-9]]*\).*/\3/'`
47    if test "x${gsl_micro_version}" = "x" ; then
48       gsl_micro_version=0
49    fi
50
51    if test "x$enable_gsltest" = "xyes" ; then
52      ac_save_CFLAGS="$CFLAGS"
53      ac_save_LIBS="$LIBS"
54      CFLAGS="$CFLAGS $GSL_CFLAGS"
55      LIBS="$LIBS $GSL_LIBS"
56
57      rm -f conf.gsltest
58      AC_TRY_RUN([
59#include <stdio.h>
60#include <stdlib.h>
61#include <string.h>
62
63char* my_strdup (const char *str);
64
65char*
66my_strdup (const char *str)
67{
68  char *new_str;
69 
70  if (str)
71    {
72      new_str = (char *)malloc ((strlen (str) + 1) * sizeof(char));
73      strcpy (new_str, str);
74    }
75  else
76    new_str = NULL;
77 
78  return new_str;
79}
80
81int main (void)
82{
83  int major = 0, minor = 0, micro = 0;
84  int n;
85  char *tmp_version;
86
87  system ("touch conf.gsltest");
88
89  /* HP/UX 9 (%@#!) writes to sscanf strings */
90  tmp_version = my_strdup("$min_gsl_version");
91
92  n = sscanf(tmp_version, "%d.%d.%d", &major, &minor, &micro) ;
93
94  if (n != 2 && n != 3) {
95     printf("%s, bad version string\n", "$min_gsl_version");
96     exit(1);
97   }
98
99   if (($gsl_major_version > major) ||
100      (($gsl_major_version == major) && ($gsl_minor_version > minor)) ||
101      (($gsl_major_version == major) && ($gsl_minor_version == minor) && ($gsl_micro_version >= micro)))
102    {
103      exit(0);
104    }
105  else
106    {
107      printf("\n*** 'gsl-config --version' returned %d.%d.%d, but the minimum version\n", $gsl_major_version, $gsl_minor_version, $gsl_micro_version);
108      printf("*** of GSL required is %d.%d.%d. If gsl-config is correct, then it is\n", major, minor, micro);
109      printf("*** best to upgrade to the required version.\n");
110      printf("*** If gsl-config was wrong, set the environment variable GSL_CONFIG\n");
111      printf("*** to point to the correct copy of gsl-config, and remove the file\n");
112      printf("*** config.cache before re-running configure\n");
113      exit(1);
114    }
115}
116
117],, no_gsl=yes,[echo $ac_n "cross compiling; assumed OK... $ac_c"])
118       CFLAGS="$ac_save_CFLAGS"
119       LIBS="$ac_save_LIBS"
120     fi
121  fi
122  if test "x$no_gsl" = x ; then
123     AC_MSG_RESULT(yes)
124     ifelse([$2], , :, [$2])     
125  else
126     AC_MSG_RESULT(no)
127     if test "$GSL_CONFIG" = "no" ; then
128       echo "*** The gsl-config script installed by GSL could not be found"
129       echo "*** If GSL was installed in PREFIX, make sure PREFIX/bin is in"
130       echo "*** your path, or set the GSL_CONFIG environment variable to the"
131       echo "*** full path to gsl-config."
132     else
133       if test -f conf.gsltest ; then
134        :
135       else
136          echo "*** Could not run GSL test program, checking why..."
137          CFLAGS="$CFLAGS $GSL_CFLAGS"
138          LIBS="$LIBS $GSL_LIBS"
139          AC_TRY_LINK([
140#include <stdio.h>
141],      [ return 0; ],
142        [ echo "*** The test program compiled, but did not run. This usually means"
143          echo "*** that the run-time linker is not finding GSL or finding the wrong"
144          echo "*** version of GSL. If it is not finding GSL, you'll need to set your"
145          echo "*** LD_LIBRARY_PATH environment variable, or edit /etc/ld.so.conf to point"
146          echo "*** to the installed location  Also, make sure you have run ldconfig if that"
147          echo "*** is required on your system"
148    echo "***"
149          echo "*** If you have an old version installed, it is best to remove it, although"
150          echo "*** you may also be able to get things to work by modifying LD_LIBRARY_PATH"],
151        [ echo "*** The test program failed to compile or link. See the file config.log for the"
152          echo "*** exact error that occured. This usually means GSL was incorrectly installed"
153          echo "*** or that you have moved GSL since it was installed. In the latter case, you"
154          echo "*** may want to edit the gsl-config script: $GSL_CONFIG" ])
155          CFLAGS="$ac_save_CFLAGS"
156          LIBS="$ac_save_LIBS"
157       fi
158     fi
159#     GSL_CFLAGS=""
160#     GSL_LIBS=""
161     ifelse([$3], , :, [$3])
162  fi
163  AC_SUBST(GSL_CFLAGS)
164  AC_SUBST(GSL_LIBS)
165  rm -f conf.gsltest
166])
167
168AU_ALIAS([AM_PATH_GSL], [AX_PATH_GSL])
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