✏️ Editing: glib-2.0.m4 Read Only

# Configure paths for GLIB
# Owen Taylor     1997-2001

# Increment this whenever this file is changed.
#serial 4

dnl AM_PATH_GLIB_2_0([MINIMUM-VERSION, [ACTION-IF-FOUND [, ACTION-IF-NOT-FOUND [, MODULES]]]])
dnl Test for GLIB, and define GLIB_CFLAGS and GLIB_LIBS, if gmodule, gobject,
dnl gthread, or gio is specified in MODULES, pass to pkg-config
dnl
AC_DEFUN([AM_PATH_GLIB_2_0],
[dnl 
dnl Get the cflags and libraries from pkg-config
dnl

dnl We can't use PKG_PREREQ because that needs 0.29.
m4_ifndef([PKG_PROG_PKG_CONFIG],
          [pkg.m4 version 0.28 or later is required])

AC_ARG_ENABLE(glibtest, [  --disable-glibtest      do not try to compile and run a test GLIB program],
		    , enable_glibtest=yes)

min_glib_version=ifelse([$1], [], [2.0.0], [$1])
  pkg_config_args="glib-2.0 >= $min_glib_version"
  for module in . $4
  do
      case "$module" in
         gmodule) 
             pkg_config_args="$pkg_config_args gmodule-2.0"
         ;;
         gmodule-no-export) 
             pkg_config_args="$pkg_config_args gmodule-no-export-2.0"
         ;;
         gobject) 
             pkg_config_args="$pkg_config_args gobject-2.0"
         ;;
         gthread) 
             pkg_config_args="$pkg_config_args gthread-2.0"
         ;;
         gio*) 
             pkg_config_args="$pkg_config_args $module-2.0"
         ;;
      esac
  done

PKG_PROG_PKG_CONFIG([0.16])

no_glib=""

if test "x$PKG_CONFIG" = x ; then
    no_glib=yes
    PKG_CONFIG=no
  fi

dnl For GLIB_CFLAGS and GLIB_LIBS
  PKG_CHECK_MODULES([GLIB], [$pkg_config_args], [:], [:])

dnl For the tools
  PKG_CHECK_VAR([GLIB_GENMARSHAL], [glib-2.0], [glib_genmarshal])
  PKG_CHECK_VAR([GOBJECT_QUERY], [glib-2.0], [gobject_query])
  PKG_CHECK_VAR([GLIB_MKENUMS], [glib-2.0], [glib_mkenums])
  PKG_CHECK_VAR([GLIB_COMPILE_RESOURCES], [gio-2.0], [glib_compile_resources])

AC_MSG_CHECKING(for GLIB - version >= $min_glib_version)

if test x$PKG_CONFIG != xno ; then
    ## don't try to run the test against uninstalled libtool libs
    if $PKG_CONFIG --uninstalled $pkg_config_args; then
	  echo "Will use uninstalled version of GLib found in PKG_CONFIG_PATH"
	  enable_glibtest=no
    fi

if $PKG_CONFIG --atleast-version $min_glib_version $pkg_config_args; then
	  :
    else
	  no_glib=yes
    fi
  fi

if test x"$no_glib" = x ; then
    glib_config_major_version=`$PKG_CONFIG --modversion glib-2.0 | \
           sed 's/$[[0-9]]*$.$[[0-9]]*$.$[[0-9]]*$/\1/'`
    glib_config_minor_version=`$PKG_CONFIG --modversion glib-2.0 | \
           sed 's/$[[0-9]]*$.$[[0-9]]*$.$[[0-9]]*$/\2/'`
    glib_config_micro_version=`$PKG_CONFIG --modversion glib-2.0 | \
           sed 's/$[[0-9]]*$.$[[0-9]]*$.$[[0-9]]*$/\3/'`
    if test "x$enable_glibtest" = "xyes" ; then
      ac_save_CFLAGS="$CFLAGS"
      ac_save_LIBS="$LIBS"
      CFLAGS="$CFLAGS $GLIB_CFLAGS"
      LIBS="$GLIB_LIBS $LIBS"
dnl
dnl Now check if the installed GLib is sufficiently new. (Also sanity
dnl checks the results of pkg-config to some extent)
dnl
      rm -f conf.glibtest
      AC_RUN_IFELSE([AC_LANG_SOURCE([[
#include <glib.h>
#include <stdio.h>
#include <stdlib.h>

int 
main (void)
{
  unsigned int major, minor, micro;

fclose (fopen ("conf.glibtest", "w"));

if (sscanf("$min_glib_version", "%u.%u.%u", &major, &minor, &micro) != 3) {
     printf("%s, bad version string\n", "$min_glib_version");
     exit(1);
   }

if ((glib_major_version != $glib_config_major_version) ||
      (glib_minor_version != $glib_config_minor_version) ||
      (glib_micro_version != $glib_config_micro_version))
    {
      printf("\n*** 'pkg-config --modversion glib-2.0' returned %d.%d.%d, but GLIB (%d.%d.%d)\n", 
             $glib_config_major_version, $glib_config_minor_version, $glib_config_micro_version,
             glib_major_version, glib_minor_version, glib_micro_version);
      printf ("*** was found! If pkg-config was correct, then it is best\n");
      printf ("*** to remove the old version of GLib. You may also be able to fix the error\n");
      printf("*** by modifying your LD_LIBRARY_PATH environment variable, or by editing\n");
      printf("*** /etc/ld.so.conf. Make sure you have run ldconfig if that is\n");
      printf("*** required on your system.\n");
      printf("*** If pkg-config was wrong, set the environment variable PKG_CONFIG_PATH\n");
      printf("*** to point to the correct configuration files\n");
    } 
  else if ((glib_major_version != GLIB_MAJOR_VERSION) ||
	   (glib_minor_version != GLIB_MINOR_VERSION) ||
           (glib_micro_version != GLIB_MICRO_VERSION))
    {
      printf("*** GLib header files (version %d.%d.%d) do not match\n",
	     GLIB_MAJOR_VERSION, GLIB_MINOR_VERSION, GLIB_MICRO_VERSION);
      printf("*** library (version %d.%d.%d)\n",
	     glib_major_version, glib_minor_version, glib_micro_version);
    }
  else
    {
      if ((glib_major_version > major) ||
        ((glib_major_version == major) && (glib_minor_version > minor)) ||
        ((glib_major_version == major) && (glib_minor_version == minor) && (glib_micro_version >= micro)))
      {
        return 0;
       }
     else
      {
        printf("\n*** An old version of GLib (%u.%u.%u) was found.\n",
               glib_major_version, glib_minor_version, glib_micro_version);
        printf("*** You need a version of GLib newer than %u.%u.%u. The latest version of\n",
	       major, minor, micro);
        printf("*** GLib is always available from ftp://ftp.gtk.org.\n");
        printf("***\n");
        printf("*** If you have already installed a sufficiently new version, this error\n");
        printf("*** probably means that the wrong copy of the pkg-config shell script is\n");
        printf("*** being found. The easiest way to fix this is to remove the old version\n");
        printf("*** of GLib, but you can also set the PKG_CONFIG environment to point to the\n");
        printf("*** correct copy of pkg-config. (In this case, you will have to\n");
        printf("*** modify your LD_LIBRARY_PATH environment variable, or edit /etc/ld.so.conf\n");
        printf("*** so that the correct libraries are found at run-time))\n");
      }
    }
  return 1;
}
]])],[],[no_glib=yes],[echo $ac_n "cross compiling; assumed OK... $ac_c"])
       CFLAGS="$ac_save_CFLAGS"
       LIBS="$ac_save_LIBS"
     fi
  fi
  if test "x$no_glib" = x ; then
     AC_MSG_RESULT(yes (version $glib_config_major_version.$glib_config_minor_version.$glib_config_micro_version))
     ifelse([$2], , :, [$2])     
  else
     AC_MSG_RESULT(no)
     if test "$PKG_CONFIG" = "no" ; then
       echo "*** A new enough version of pkg-config was not found."
       echo "*** See http://www.freedesktop.org/software/pkgconfig/"
     else
       if test -f conf.glibtest ; then
        :
       else
          echo "*** Could not run GLib test program, checking why..."
          ac_save_CFLAGS="$CFLAGS"
          ac_save_LIBS="$LIBS"
          CFLAGS="$CFLAGS $GLIB_CFLAGS"
          LIBS="$LIBS $GLIB_LIBS"
          AC_LINK_IFELSE([AC_LANG_PROGRAM([[
#include <glib.h>
#include <stdio.h>
]],      [[ return ((glib_major_version) || (glib_minor_version) || (glib_micro_version)); ]])],
        [ echo "*** The test program compiled, but did not run. This usually means"
          echo "*** that the run-time linker is not finding GLib or finding the wrong"
          echo "*** version of GLib. If it is not finding GLib, you'll need to set your"
          echo "*** LD_LIBRARY_PATH environment variable, or edit /etc/ld.so.conf to point"
          echo "*** to the installed location  Also, make sure you have run ldconfig if that"
          echo "*** is required on your system"
	  echo "***"
          echo "*** If you have an old version installed, it is best to remove it, although"
          echo "*** you may also be able to get things to work by modifying LD_LIBRARY_PATH" ],
        [ echo "*** The test program failed to compile or link. See the file config.log for the"
          echo "*** exact error that occurred. This usually means GLib is incorrectly installed."])
          CFLAGS="$ac_save_CFLAGS"
          LIBS="$ac_save_LIBS"
       fi
     fi
     GLIB_CFLAGS=""
     GLIB_LIBS=""
     GLIB_GENMARSHAL=""
     GOBJECT_QUERY=""
     GLIB_MKENUMS=""
     GLIB_COMPILE_RESOURCES=""
     ifelse([$3], , :, [$3])
  fi
  rm -f conf.glibtest
])

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