dnl AM_PATH_CHECK([MINIMUM-VERSION, [ACTION-IF-FOUND [, ACTION-IF-NOT-FOUND]]])
dnl Test for check, and define CHECK_CFLAGS and CHECK_LIBS
dnl

AC_DEFUN([AM_PATH_CHECK],
[
  AC_ARG_WITH(check,
  [  --with-check=PATH       prefix where check is installed [default=auto]])
 
  min_check_version=ifelse([$1], ,0.8.2,$1)

  AC_MSG_CHECKING(for check - version >= $min_check_version)

  if test x$with_check = xno; then
    AC_MSG_RESULT(disabled)
    ifelse([$3], , AC_MSG_ERROR([disabling check is not supported]), [$3])
  else
    if test "x$with_check" != x; then
      CHECK_CFLAGS="-I$with_check/include"
      CHECK_LIBS="-L$with_check/lib -lcheck"
    else
      CHECK_CFLAGS=""
      CHECK_LIBS="-lcheck"
    fi

    ac_save_CFLAGS="$CFLAGS"
    ac_save_LIBS="$LIBS"

    CFLAGS="$CFLAGS $CHECK_CFLAGS"
    LIBS="$CHECK_LIBS $LIBS"

    rm -f conf.check-test
    AC_TRY_RUN([
#include <stdio.h>
#include <stdlib.h>

#include <check.h>

int main ()
{
  int major, minor, micro;
  char *tmp_version;

  system ("touch conf.check-test");

  /* HP/UX 9 (%@#!) writes to sscanf strings */
  tmp_version = strdup("$min_check_version");
  if (sscanf(tmp_version, "%d.%d.%d", &major, &minor, &micro) != 3) {
     printf("%s, bad version string\n", "$min_check_version");
     return 1;
   }
    
  if ((CHECK_MAJOR_VERSION != check_major_version) ||
      (CHECK_MINOR_VERSION != check_minor_version) ||
      (CHECK_MICRO_VERSION != check_micro_version))
    {
      printf("\n*** The check header file (version %d.%d.%d) does not match\n",
	     CHECK_MAJOR_VERSION, CHECK_MINOR_VERSION, CHECK_MICRO_VERSION);
      printf("*** the check library (version %d.%d.%d).\n",
	     check_major_version, check_minor_version, check_micro_version);
      return 1;
    }

  if ((check_major_version > major) ||
      ((check_major_version == major) && (check_minor_version > minor)) ||
      ((check_major_version == major) && (check_minor_version == minor) && (check_micro_version >= micro)))
    {
      return 0;
    }
  else
    {
      printf("\n*** An old version of check (%d.%d.%d) was found.\n",
             check_major_version, check_minor_version, check_micro_version);
      printf("*** You need a version of check being at least %d.%d.%d.\n", major, minor, micro);
      printf("***\n"); 
      printf("*** If you have already installed a sufficiently new version, this error\n");
      printf("*** probably means that the wrong copy of the check library and header\n");
      printf("*** file is being found. Rerun configure with the --with-check=PATH option\n");
      printf("*** to specify the prefix where the correct version was installed.\n");
    }

  return 1;
}
],, no_check=yes, [echo $ac_n "cross compiling; assumed OK... $ac_c"])

    CFLAGS="$ac_save_CFLAGS"
    LIBS="$ac_save_LIBS"

    if test "x$no_check" = x ; then
      AC_MSG_RESULT(yes)
      ifelse([$2], , :, [$2])
    else
      AC_MSG_RESULT(no)
      if test -f conf.check-test ; then
        :
      else
        echo "*** Could not run check test program, checking why..."
        CFLAGS="$CFLAGS $CHECK_CFLAGS"
        LIBS="$CHECK_LIBS $LIBS"
        AC_TRY_LINK([
#include <stdio.h>
#include <stdlib.h>

#include <check.h>
], ,  [ echo "*** The test program compiled, but did not run. This usually means"
        echo "*** that the run-time linker is not finding check. 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"
        echo "*** the exact error that occured." ])
      
        CFLAGS="$ac_save_CFLAGS"
        LIBS="$ac_save_LIBS"
      fi

      CHECK_CFLAGS=""
      CHECK_LIBS=""

      rm -f conf.check-test
      ifelse([$3], , AC_MSG_ERROR([check not found]), [$3])
    fi

    AC_SUBST(CHECK_CFLAGS)
    AC_SUBST(CHECK_LIBS)

    rm -f conf.check-test

  fi
])


dnl Usage:
dnl   GTK_DOC_CHECK([minimum-gtk-doc-version])
AC_DEFUN([GTK_DOC_CHECK],
[
  AC_BEFORE([AC_PROG_LIBTOOL],[$0])dnl setup libtool first
  AC_BEFORE([AM_PROG_LIBTOOL],[$0])dnl setup libtool first
  dnl for overriding the documentation installation directory
  AC_ARG_WITH(html-dir,
    AC_HELP_STRING([--with-html-dir=PATH], [path to installed docs]),,
    [with_html_dir='${datadir}/gtk-doc/html'])
  HTML_DIR="$with_html_dir"
  AC_SUBST(HTML_DIR)

  dnl enable/disable documentation building
  AC_ARG_ENABLE(gtk-doc,
    AC_HELP_STRING([--enable-gtk-doc],
                   [use gtk-doc to build documentation [default=no]]),,
    enable_gtk_doc=no)

  have_gtk_doc=no
  if test x$enable_gtk_doc = xyes; then
    if test -z "$PKG_CONFIG"; then
      AC_PATH_PROG(PKG_CONFIG, pkg-config, no)
    fi
    if test "$PKG_CONFIG" != "no" && $PKG_CONFIG --exists gtk-doc; then
      have_gtk_doc=yes
    fi

  dnl do we want to do a version check?
ifelse([$1],[],,
    [gtk_doc_min_version=$1
    if test "$have_gtk_doc" = yes; then
      AC_MSG_CHECKING([gtk-doc version >= $gtk_doc_min_version])
      if $PKG_CONFIG --atleast-version $gtk_doc_min_version gtk-doc; then
        AC_MSG_RESULT(yes)
      else
        AC_MSG_RESULT(no)
        have_gtk_doc=no
      fi
    fi
])
    if test "$have_gtk_doc" != yes; then
      enable_gtk_doc=no
    fi
  fi

  AM_CONDITIONAL(ENABLE_GTK_DOC, test x$enable_gtk_doc = xyes)
  AM_CONDITIONAL(GTK_DOC_USE_LIBTOOL, test -n "$LIBTOOL")
])