aboutsummaryrefslogtreecommitdiffstats
path: root/m4/ac_path_generic.m4
blob: d42724115f00e6d36f143f67c17db7f3a2470b50 (plain) (blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
dnl @synopsis AC_PATH_GENERIC(LIBRARY [, MINIMUM-VERSION [, ACTION-IF-FOUND [, ACTION-IF-NOT-FOUND]]])
dnl
dnl Runs a LIBRARY-config script and defines LIBRARY_CFLAGS and LIBRARY_LIBS
dnl
dnl The script must support `--cflags' and `--libs' args.
dnl If MINIMUM-VERSION is specified, the script must also support the
dnl `--version' arg.
dnl If the `--with-library-[exec-]prefix' arguments to ./configure are given,
dnl it must also support `--prefix' and `--exec-prefix'.
dnl (In other words, it must be like gtk-config.)
dnl
dnl For example:
dnl
dnl    AC_PATH_GENERIC(Foo, 1.0.0)
dnl
dnl would run `foo-config --version' and check that it is at least 1.0.0
dnl
dnl If so, the following would then be defined:
dnl
dnl    FOO_CFLAGS to `foo-config --cflags`
dnl    FOO_LIBS   to `foo-config --libs`
dnl
dnl At present there is no support for additional "MODULES" (see AM_PATH_GTK)
dnl (shamelessly stolen from gtk.m4 and then hacked around a fair amount)
dnl
dnl @author Angus Lees <gusl@cse.unsw.edu.au>

AC_DEFUN([AC_PATH_GENERIC],
[dnl
dnl we're going to need uppercase, lowercase and user-friendly versions of the
dnl string `LIBRARY'
pushdef([UP], translit([$1], [a-z], [A-Z]))dnl
pushdef([DOWN], translit([$1], [A-Z], [a-z]))dnl

dnl
dnl Get the cflags and libraries from the LIBRARY-config script
dnl
AC_ARG_WITH(DOWN-prefix,
        [  --with-]DOWN[-prefix=PFX       Prefix where $1 is installed (optional)],
        DOWN[]_config_prefix="$withval", DOWN[]_config_prefix="")
AC_ARG_WITH(DOWN-exec-prefix,
        [  --with-]DOWN[-exec-prefix=PFX  Exec prefix where $1 is installed (optional)],
        DOWN[]_config_exec_prefix="$withval", DOWN[]_config_exec_prefix="")

  if test x$DOWN[]_config_exec_prefix != x ; then
     DOWN[]_config_args="$DOWN[]_config_args --exec-prefix=$DOWN[]_config_exec_prefix"
     if test x${UP[]_CONFIG+set} != xset ; then
       UP[]_CONFIG=$DOWN[]_config_exec_prefix/bin/DOWN-config
     fi
  fi
  if test x$DOWN[]_config_prefix != x ; then
     DOWN[]_config_args="$DOWN[]_config_args --prefix=$DOWN[]_config_prefix"
     if test x${UP[]_CONFIG+set} != xset ; then
       UP[]_CONFIG=$DOWN[]_config_prefix/bin/DOWN-config
     fi
  fi

  AC_PATH_PROG(UP[]_CONFIG, DOWN-config, no)
  ifelse([$2], ,
     AC_MSG_CHECKING(for $1),
     AC_MSG_CHECKING(for $1 - version >= $2)
  )
  no_[]DOWN=""
  if test "$UP[]_CONFIG" = "no" ; then
     no_[]DOWN=yes
  else
     UP[]_CFLAGS="`$UP[]_CONFIG $DOWN[]_config_args --cflags`"
     UP[]_LIBS="`$UP[]_CONFIG $DOWN[]_config_args --libs`"
     ifelse([$2], , ,[
        DOWN[]_config_major_version=`$UP[]_CONFIG $DOWN[]_config_args \
         --version | sed 's/[[^0-9]]*\([[0-9]]*\).\([[0-9]]*\).\([[0-9]]*\).*/\1/'`
        DOWN[]_config_minor_version=`$UP[]_CONFIG $DOWN[]_config_args \
         --version | sed 's/[[^0-9]]*\([[0-9]]*\).\([[0-9]]*\).\([[0-9]]*\).*/\2/'`
        DOWN[]_config_micro_version=`$UP[]_CONFIG $DOWN[]_config_args \
         --version | sed 's/[[^0-9]]*\([[0-9]]*\).\([[0-9]]*\).\([[0-9]]*\).*/\3/'`
        DOWN[]_wanted_major_version="regexp($2, [\<\([0-9]*\)], [\1])"
        DOWN[]_wanted_minor_version="regexp($2, [\<\([0-9]*\)\.\([0-9]*\)], [\2])"
        DOWN[]_wanted_micro_version="regexp($2, [\<\([0-9]*\).\([0-9]*\).\([0-9]*\)], [\3])"

        # Compare wanted version to what config script returned.
        # If I knew what library was being run, i'd probably also compile
        # a test program at this point (which also extracted and tested
        # the version in some library-specific way)
        if test "$DOWN[]_config_major_version" -lt \
                        "$DOWN[]_wanted_major_version" \
          -o \( "$DOWN[]_config_major_version" -eq \
                        "$DOWN[]_wanted_major_version" \
            -a "$DOWN[]_config_minor_version" -lt \
                        "$DOWN[]_wanted_minor_version" \) \
          -o \( "$DOWN[]_config_major_version" -eq \
                        "$DOWN[]_wanted_major_version" \
            -a "$DOWN[]_config_minor_version" -eq \
                        "$DOWN[]_wanted_minor_version" \
            -a "$DOWN[]_config_micro_version" -lt \
                        "$DOWN[]_wanted_micro_version" \) ; then
          # older version found
          no_[]DOWN=yes
          echo -n "*** An old version of $1 "
          echo -n "($DOWN[]_config_major_version"
          echo -n ".$DOWN[]_config_minor_version"
          echo    ".$DOWN[]_config_micro_version) was found."
          echo -n "*** You need a version of $1 newer than "
          echo -n "$DOWN[]_wanted_major_version"
          echo -n ".$DOWN[]_wanted_minor_version"
          echo    ".$DOWN[]_wanted_micro_version."
          echo "***"
          echo "*** If you have already installed a sufficiently new version, this error"
          echo "*** probably means that the wrong copy of the DOWN-config shell script is"
          echo "*** being found. The easiest way to fix this is to remove the old version"
          echo "*** of $1, but you can also set the UP[]_CONFIG environment to point to the"
          echo "*** correct copy of DOWN-config. (In this case, you will have to"
          echo "*** modify your LD_LIBRARY_PATH environment variable, or edit /etc/ld.so.conf"
          echo "*** so that the correct libraries are found at run-time)"
        fi
     ])
  fi
  if test "x$no_[]DOWN" = x ; then
     AC_MSG_RESULT(yes)
     ifelse([$3], , :, [$3])
  else
     AC_MSG_RESULT(no)
     if test "$UP[]_CONFIG" = "no" ; then
       echo "*** The DOWN-config script installed by $1 could not be found"
       echo "*** If $1 was installed in PREFIX, make sure PREFIX/bin is in"
       echo "*** your path, or set the UP[]_CONFIG environment variable to the"
       echo "*** full path to DOWN-config."
     fi
     UP[]_CFLAGS=""
     UP[]_LIBS=""
     ifelse([$4], , :, [$4])
  fi
  AC_SUBST(UP[]_CFLAGS)
  AC_SUBST(UP[]_LIBS)

  popdef([UP])
  popdef([DOWN])
])