m4.include/ac-glib.m4

   1 dnl
   2 dnl Check whether the g_module_* family of functions works
   3 dnl on this system.  We need to know that at the compile time to
   4 dnl decide whether to link with X11.
   5 dnl
   6 AC_DEFUN([AC_G_MODULE_SUPPORTED], [
   7
   8     g_module_supported=""
   9
  10     found_gmodule=no
  11     PKG_CHECK_MODULES(GMODULE, [gmodule-no-export-2.0 >= 2.8], [found_gmodule=yes], [:])
  12     if test x"$found_gmodule" = xyes; then
  13         g_module_supported="gmodule-no-export-2.0"
  14     else
  15         dnl try fallback to the generic gmodule
  16         PKG_CHECK_MODULES(GMODULE, [gmodule-2.0 >= 2.8], [found_gmodule=yes], [:])
  17         if test x"$found_gmodule" = xyes; then
  18             g_module_supported="gmodule-2.0"
  19         fi
  20     fi
  21
  22     case x"$g_module_supported" in
  23         xgmodule-no-export-2.0|xgmodule-2.0)
  24             if test x`$PKG_CONFIG --variable=gmodule_supported "$g_module_supported"` = xtrue; then
  25                 AC_DEFINE([HAVE_GMODULE], [1], [Defined if gmodule functionality is supported])
  26             else
  27                 g_module_supported=""
  28             fi
  29             ;;
  30         *)
  31             g_module_supported=""
  32             ;;
  33     esac
  34
  35     AM_CONDITIONAL([HAVE_GMODULE], [test x"$g_module_supported" != x])
  36
  37     dnl
  38     dnl Try to find static libraries for glib and gmodule.
  39     dnl
  40     if test x$with_glib_static = xyes; then
  41         new_GLIB_LIBS=
  42         for i in $GLIB_LIBS; do
  43             case x$i in
  44             x-lglib*)
  45                 lib=glib ;;
  46             x-lgmodule*)
  47                 lib=gmodule ;;
  48             *)
  49                 lib=
  50                 add="$i" ;;
  51             esac
  52
  53             if test -n "$lib"; then
  54                 lib1=`echo $i | sed 's/^-l//'`
  55                 if test -f "$GLIB_LIBDIR/lib${lib1}.a"; then
  56                     add="$GLIB_LIBDIR/lib${lib1}.a"
  57                 else
  58                     if test -f "$GLIB_LIBDIR/lib${lib}.a"; then
  59                         add="$GLIB_LIBDIR/lib${lib}.a"
  60                     else
  61                         AC_MSG_ERROR([Cannot find static $lib])
  62                     fi
  63                 fi
  64             fi
  65             new_GLIB_LIBS="$new_GLIB_LIBS $add"
  66         done
  67         GLIB_LIBS="$new_GLIB_LIBS"
  68     fi
  69
  70 ])
  71
  72 AC_DEFUN([AC_CHECK_GLIB], [
  73     dnl
  74     dnl First try glib 2.x.
  75     dnl Keep this check close to the beginning, so that the users
  76     dnl without any glib won't have their time wasted by other checks.
  77     dnl
  78
  79     AC_ARG_WITH([glib_static],
  80         AS_HELP_STRING([--with-glib-static], [Link glib statically @<:@no@:>@]))
  81
  82     glib_found=no
  83     PKG_CHECK_MODULES(GLIB, [glib-2.0 >= 2.8], [glib_found=yes], [:])
  84     if test x"$glib_found" = xno; then
  85         AC_MSG_ERROR([glib-2.0 not found or version too old (must be >= 2.8)])
  86     fi
  87
  88 ])
  89