m4/ac_path_generic.m4

   1 dnl @synopsis AC_PATH_GENERIC(LIBRARY [, MINIMUM-VERSION [, ACTION-IF-FOUND [, ACTION-IF-NOT-FOUND]]])
   2 dnl
   3 dnl Runs a LIBRARY-config script and defines LIBRARY_CFLAGS and LIBRARY_LIBS
   4 dnl
   5 dnl The script must support `--cflags' and `--libs' args.
   6 dnl If MINIMUM-VERSION is specified, the script must also support the
   7 dnl `--version' arg.
   8 dnl If the `--with-library-[exec-]prefix' arguments to ./configure are given,
   9 dnl it must also support `--prefix' and `--exec-prefix'.
  10 dnl (In other words, it must be like gtk-config.)
  11 dnl
  12 dnl For example:
  13 dnl
  14 dnl    AC_PATH_GENERIC(Foo, 1.0.0)
  15 dnl
  16 dnl would run `foo-config --version' and check that it is at least 1.0.0
  17 dnl
  18 dnl If so, the following would then be defined:
  19 dnl
  20 dnl    FOO_CFLAGS to `foo-config --cflags`
  21 dnl    FOO_LIBS   to `foo-config --libs`
  22 dnl
  23 dnl At present there is no support for additional "MODULES" (see AM_PATH_GTK)
  24 dnl (shamelessly stolen from gtk.m4 and then hacked around a fair amount)
  25 dnl
  26 dnl @author Angus Lees <gusl@cse.unsw.edu.au>
  27
  28 AC_DEFUN([AC_PATH_GENERIC],
  29 [dnl
  30 dnl we're going to need uppercase, lowercase and user-friendly versions of the
  31 dnl string `LIBRARY'
  32 pushdef([UP], translit([$1], [a-z], [A-Z]))dnl
  33 pushdef([DOWN], translit([$1], [A-Z], [a-z]))dnl
  34
  35 dnl
  36 dnl Get the cflags and libraries from the LIBRARY-config script
  37 dnl
  38 AC_ARG_WITH(DOWN-prefix,
  39         [  --with-]DOWN[-prefix=PFX       Prefix where $1 is installed (optional)],
  40         DOWN[]_config_prefix="$withval", DOWN[]_config_prefix="")
  41 AC_ARG_WITH(DOWN-exec-prefix,
  42         [  --with-]DOWN[-exec-prefix=PFX  Exec prefix where $1 is installed (optional)],
  43         DOWN[]_config_exec_prefix="$withval", DOWN[]_config_exec_prefix="")
  44
  45   if test x$DOWN[]_config_exec_prefix != x ; then
  46      DOWN[]_config_args="$DOWN[]_config_args --exec-prefix=$DOWN[]_config_exec_prefix"
  47      if test x${UP[]_CONFIG+set} != xset ; then
  48        UP[]_CONFIG=$DOWN[]_config_exec_prefix/bin/DOWN-config
  49      fi
  50   fi
  51   if test x$DOWN[]_config_prefix != x ; then
  52      DOWN[]_config_args="$DOWN[]_config_args --prefix=$DOWN[]_config_prefix"
  53      if test x${UP[]_CONFIG+set} != xset ; then
  54        UP[]_CONFIG=$DOWN[]_config_prefix/bin/DOWN-config
  55      fi
  56   fi
  57
  58   AC_PATH_PROG(UP[]_CONFIG, DOWN-config, no)
  59   ifelse([$2], ,
  60      AC_MSG_CHECKING(for $1),
  61      AC_MSG_CHECKING(for $1 - version >= $2)
  62   )
  63   no_[]DOWN=""
  64   if test "$UP[]_CONFIG" = "no" ; then
  65      no_[]DOWN=yes
  66   else
  67      UP[]_CFLAGS="`$UP[]_CONFIG $DOWN[]_config_args --cflags`"
  68      UP[]_LIBS="`$UP[]_CONFIG $DOWN[]_config_args --libs`"
  69      ifelse([$2], , ,[
  70         DOWN[]_config_major_version=`$UP[]_CONFIG $DOWN[]_config_args \
  71          --version | sed 's/[[^0-9]]*\([[0-9]]*\).\([[0-9]]*\).\([[0-9]]*\).*/\1/'`
  72         DOWN[]_config_minor_version=`$UP[]_CONFIG $DOWN[]_config_args \
  73          --version | sed 's/[[^0-9]]*\([[0-9]]*\).\([[0-9]]*\).\([[0-9]]*\).*/\2/'`
  74         DOWN[]_config_micro_version=`$UP[]_CONFIG $DOWN[]_config_args \
  75          --version | sed 's/[[^0-9]]*\([[0-9]]*\).\([[0-9]]*\).\([[0-9]]*\).*/\3/'`
  76         DOWN[]_wanted_major_version="regexp($2, [\<\([0-9]*\)], [\1])"
  77         DOWN[]_wanted_minor_version="regexp($2, [\<\([0-9]*\)\.\([0-9]*\)], [\2])"
  78         DOWN[]_wanted_micro_version="regexp($2, [\<\([0-9]*\).\([0-9]*\).\([0-9]*\)], [\3])"
  79
  80         # Compare wanted version to what config script returned.
  81         # If I knew what library was being run, i'd probably also compile
  82         # a test program at this point (which also extracted and tested
  83         # the version in some library-specific way)
  84         if test "$DOWN[]_config_major_version" -lt \
  85                         "$DOWN[]_wanted_major_version" \
  86           -o \( "$DOWN[]_config_major_version" -eq \
  87                         "$DOWN[]_wanted_major_version" \
  88             -a "$DOWN[]_config_minor_version" -lt \
  89                         "$DOWN[]_wanted_minor_version" \) \
  90           -o \( "$DOWN[]_config_major_version" -eq \
  91                         "$DOWN[]_wanted_major_version" \
  92             -a "$DOWN[]_config_minor_version" -eq \
  93                         "$DOWN[]_wanted_minor_version" \
  94             -a "$DOWN[]_config_micro_version" -lt \
  95                         "$DOWN[]_wanted_micro_version" \) ; then
  96           # older version found
  97           no_[]DOWN=yes
  98           echo -n "*** An old version of $1 "
  99           echo -n "($DOWN[]_config_major_version"
 100           echo -n ".$DOWN[]_config_minor_version"
 101           echo    ".$DOWN[]_config_micro_version) was found."
 102           echo -n "*** You need a version of $1 newer than "
 103           echo -n "$DOWN[]_wanted_major_version"
 104           echo -n ".$DOWN[]_wanted_minor_version"
 105           echo    ".$DOWN[]_wanted_micro_version."
 106           echo "***"
 107           echo "*** If you have already installed a sufficiently new version, this error"
 108           echo "*** probably means that the wrong copy of the DOWN-config shell script is"
 109           echo "*** being found. The easiest way to fix this is to remove the old version"
 110           echo "*** of $1, but you can also set the UP[]_CONFIG environment to point to the"
 111           echo "*** correct copy of DOWN-config. (In this case, you will have to"
 112           echo "*** modify your LD_LIBRARY_PATH environment variable, or edit /etc/ld.so.conf"
 113           echo "*** so that the correct libraries are found at run-time)"
 114         fi
 115      ])
 116   fi
 117   if test "x$no_[]DOWN" = x ; then
 118      AC_MSG_RESULT(yes)
 119      ifelse([$3], , :, [$3])
 120   else
 121      AC_MSG_RESULT(no)
 122      if test "$UP[]_CONFIG" = "no" ; then
 123        echo "*** The DOWN-config script installed by $1 could not be found"
 124        echo "*** If $1 was installed in PREFIX, make sure PREFIX/bin is in"
 125        echo "*** your path, or set the UP[]_CONFIG environment variable to the"
 126        echo "*** full path to DOWN-config."
 127      fi
 128      UP[]_CFLAGS=""
 129      UP[]_LIBS=""
 130      ifelse([$4], , :, [$4])
 131   fi
 132   AC_SUBST(UP[]_CFLAGS)
 133   AC_SUBST(UP[]_LIBS)
 134
 135   popdef([UP])
 136   popdef([DOWN])
 137 ])