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,[  --with-]DOWN[-prefix=PFX       Prefix where $1 is installed (optional)],
  39         DOWN[]_config_prefix="$withval", DOWN[]_config_prefix="")
  40 AC_ARG_WITH(DOWN-exec-prefix,[  --with-]DOWN[-exec-prefix=PFX Exec prefix where $1 is installed (optional)],
  41         DOWN[]_config_exec_prefix="$withval", DOWN[]_config_exec_prefix="")
  42
  43   if test x$DOWN[]_config_exec_prefix != x ; then
  44      DOWN[]_config_args="$DOWN[]_config_args --exec-prefix=$DOWN[]_config_exec_prefix"
  45      if test x${UP[]_CONFIG+set} != xset ; then
  46        UP[]_CONFIG=$DOWN[]_config_exec_prefix/bin/DOWN-config
  47      fi
  48   fi
  49   if test x$DOWN[]_config_prefix != x ; then
  50      DOWN[]_config_args="$DOWN[]_config_args --prefix=$DOWN[]_config_prefix"
  51      if test x${UP[]_CONFIG+set} != xset ; then
  52        UP[]_CONFIG=$DOWN[]_config_prefix/bin/DOWN-config
  53      fi
  54   fi
  55
  56   AC_PATH_PROG(UP[]_CONFIG, DOWN-config, no)
  57   ifelse([$2], ,
  58      AC_MSG_CHECKING(for $1),
  59      AC_MSG_CHECKING(for $1 - version >= $2)
  60   )
  61   no_[]DOWN=""
  62   if test "$UP[]_CONFIG" = "no" ; then
  63      no_[]DOWN=yes
  64   else
  65      UP[]_CFLAGS="`$UP[]_CONFIG $DOWN[]_config_args --cflags`"
  66      UP[]_LIBS="`$UP[]_CONFIG $DOWN[]_config_args --libs`"
  67      ifelse([$2], , ,[
  68         DOWN[]_config_major_version=`$UP[]_CONFIG $DOWN[]_config_args \
  69          --version | sed 's/[[^0-9]]*\([[0-9]]*\).\([[0-9]]*\).\([[0-9]]*\)/\1/'`
  70         DOWN[]_config_minor_version=`$UP[]_CONFIG $DOWN[]_config_args \
  71          --version | sed 's/[[^0-9]]*\([[0-9]]*\).\([[0-9]]*\).\([[0-9]]*\)/\2/'`
  72         DOWN[]_config_micro_version=`$UP[]_CONFIG $DOWN[]_config_args \
  73          --version | sed 's/[[^0-9]]*\([[0-9]]*\).\([[0-9]]*\).\([[0-9]]*\)/\3/'`
  74         DOWN[]_wanted_major_version="regexp($2, [\<\([0-9]*\)], [\1])"
  75         DOWN[]_wanted_minor_version="regexp($2, [\<\([0-9]*\)\.\([0-9]*\)], [\2])"
  76         DOWN[]_wanted_micro_version="regexp($2, [\<\([0-9]*\).\([0-9]*\).\([0-9]*\)], [\3])"
  77
  78         # Compare wanted version to what config script returned.
  79         # If I knew what library was being run, i'd probably also compile
  80         # a test program at this point (which also extracted and tested
  81         # the version in some library-specific way)
  82         if test "$DOWN[]_config_major_version" -lt \
  83                         "$DOWN[]_wanted_major_version" \
  84           -o \( "$DOWN[]_config_major_version" -eq \
  85                         "$DOWN[]_wanted_major_version" \
  86             -a "$DOWN[]_config_minor_version" -lt \
  87                         "$DOWN[]_wanted_minor_version" \) \
  88           -o \( "$DOWN[]_config_major_version" -eq \
  89                         "$DOWN[]_wanted_major_version" \
  90             -a "$DOWN[]_config_minor_version" -eq \
  91                         "$DOWN[]_wanted_minor_version" \
  92             -a "$DOWN[]_config_micro_version" -lt \
  93                         "$DOWN[]_wanted_micro_version" \) ; then
  94           # older version found
  95           no_[]DOWN=yes
  96           echo -n "*** An old version of $1 "
  97           echo -n "($DOWN[]_config_major_version"
  98           echo -n ".$DOWN[]_config_minor_version"
  99           echo    ".$DOWN[]_config_micro_version) was found."
 100           echo -n "*** You need a version of $1 newer than "
 101           echo -n "$DOWN[]_wanted_major_version"
 102           echo -n ".$DOWN[]_wanted_minor_version"
 103           echo    ".$DOWN[]_wanted_micro_version."
 104           echo "***"
 105           echo "*** If you have already installed a sufficiently new version, this error"
 106           echo "*** probably means that the wrong copy of the DOWN-config shell script is"
 107           echo "*** being found. The easiest way to fix this is to remove the old version"
 108           echo "*** of $1, but you can also set the UP[]_CONFIG environment to point to the"
 109           echo "*** correct copy of DOWN-config. (In this case, you will have to"
 110           echo "*** modify your LD_LIBRARY_PATH environment variable, or edit /etc/ld.so.conf"
 111           echo "*** so that the correct libraries are found at run-time)"
 112         fi
 113      ])
 114   fi
 115   if test "x$no_[]DOWN" = x ; then
 116      AC_MSG_RESULT(yes)
 117      ifelse([$3], , :, [$3])
 118   else
 119      AC_MSG_RESULT(no)
 120      if test "$UP[]_CONFIG" = "no" ; then
 121        echo "*** The DOWN-config script installed by $1 could not be found"
 122        echo "*** If $1 was installed in PREFIX, make sure PREFIX/bin is in"
 123        echo "*** your path, or set the UP[]_CONFIG environment variable to the"
 124        echo "*** full path to DOWN-config."
 125      fi
 126      UP[]_CFLAGS=""
 127      UP[]_LIBS=""
 128      ifelse([$4], , :, [$4])
 129   fi
 130   AC_SUBST(UP[]_CFLAGS)
 131   AC_SUBST(UP[]_LIBS)
 132
 133   popdef([UP])
 134   popdef([DOWN])
 135 ])
 136