path: root/source4/aclocal.m4

dnl AC_VALIDATE_CACHE_SYSTEM_TYPE[(cmd)]
dnl if the cache file is inconsistent with the current host,
dnl target and build system types, execute CMD or print a default
dnl error message.
AC_DEFUN(AC_VALIDATE_CACHE_SYSTEM_TYPE, [
    AC_REQUIRE([AC_CANONICAL_SYSTEM])
    AC_MSG_CHECKING([config.cache system type])
    if { test x"${ac_cv_host_system_type+set}" = x"set" &&
         test x"$ac_cv_host_system_type" != x"$host"; } ||
       { test x"${ac_cv_build_system_type+set}" = x"set" &&
         test x"$ac_cv_build_system_type" != x"$build"; } ||
       { test x"${ac_cv_target_system_type+set}" = x"set" &&
         test x"$ac_cv_target_system_type" != x"$target"; }; then
	AC_MSG_RESULT([different])
	ifelse($#, 1, [$1],
		[AC_MSG_ERROR(["you must remove config.cache and restart configure"])])
    else
	AC_MSG_RESULT([same])
    fi
    ac_cv_host_system_type="$host"
    ac_cv_build_system_type="$build"
    ac_cv_target_system_type="$target"
])


dnl test whether dirent has a d_off member
AC_DEFUN(AC_DIRENT_D_OFF,
[AC_CACHE_CHECK([for d_off in dirent], ac_cv_dirent_d_off,
[AC_TRY_COMPILE([
#include <unistd.h>
#include <sys/types.h>
#include <dirent.h>], [struct dirent d; d.d_off;],
ac_cv_dirent_d_off=yes, ac_cv_dirent_d_off=no)])
if test $ac_cv_dirent_d_off = yes; then
  AC_DEFINE(HAVE_DIRENT_D_OFF,1,[Whether dirent has a d_off member])
fi
])

dnl Specify the default build method of this module 
dnl SMB_MODULE_DEFAULT(1:name,2:default_build)
AC_DEFUN(SMB_MODULE_DEFAULT,
[
	dnl Fall back to static if platform does not support shared libraries
	[MODULE_DEFAULT_][$1]=$2

	if test x"$[MODULE_DEFAULT_][$1]" = xSHARED -a x"$BLDSHARED" = xfalse; then
		[MODULE_DEFAULT_][$1]=STATIC
	fi
])

dnl Mark specified module as shared
dnl SMB_MODULE(1:name,2:subsystem,3:default_build,4:object_files,5:private_proto_file,6:libs,7:whatif-static,8:whatif-shared,9:whatif-not)
AC_DEFUN(SMB_MODULE,
[
	AC_MSG_CHECKING([how to build $1])
	if test -z "$[MODULE_DEFAULT_][$1]"; then
		[MODULE_DEFAULT_][$1]=$3

		if test x"$[MODULE_DEFAULT_][$1]" = xSHARED -a x"$BLDSHARED" = xfalse; then
			[MODULE_DEFAULT_][$1]=STATIC
		fi
	fi

	if test "$[MODULE_][$1]"; then
		DEST=$[MODULE_][$1]
	elif test "$[MODULE_]translit([$2], [A-Z], [a-z])" -a x"$[MODULE_DEFAULT_][$1]" != xNOT; then
		DEST=$[MODULE_]translit([$2], [A-Z], [a-z])
	else
		DEST=$[MODULE_DEFAULT_][$1]
	fi

	if test x"$DEST" = xSHARED; then
		AC_DEFINE([$1][_init], [init_module], [Whether to build $1 as shared module])
		$2_MODULES="$$2_MODULES bin/$1.$SHLIBEXT"
		[MODULE_][$1][_PROTO]="$5"
		[MODULE_][$1][_LIBS]="$6"
		AC_MSG_RESULT([shared])
		[$8]
		string_shared_modules="$string_shared_modules $1"
	elif test x"$DEST" = xSTATIC; then
		[init_static_modules_]translit([$2], [A-Z], [a-z])="$[init_static_modules_]translit([$2], [A-Z], [a-z]) $1_init();"
		string_static_modules="$string_static_modules $1"
		[MODULE_][$1][_PROTO]="$5"
		$2_STATIC="$$2_STATIC $4"
		$2_LIBS="$$2_LIBS $6"
		[$7]
		AC_MSG_RESULT([static])
	else
	    	string_ignored_modules="$string_ignored_modules $1"
	    	[$9]
		AC_MSG_RESULT([not])
	fi
])

dnl SMB_SUBSYSTEM(1:name,2:init_objectfile,3:extra_objectfiles,4:public_proto_header,5:private_proto_header,6:libs)
AC_DEFUN(SMB_SUBSYSTEM,
[
	dnl the core object files of the subsystem
	$1_BASE="$2 $3"
	AC_SUBST($1_BASE)

	dnl the staticly linked modules of the subsystem
	AC_SUBST($1_STATIC)

	dnl all object files of the subsystem
	$1_OBJS="$$1_BASE $$1_STATIC"
	AC_SUBST($1_OBJS)

	dnl the libs required by the subsystem
	$1_LIBS="$6 $$1_LIBS"
	AC_SUBST($1_LIBS)

	dnl the shared objects modules of the subsystem
	AC_SUBST($1_MODULES)

	dnl the public_prototype_header file
	$1_PUBLIC_HEADER="$4"
	AC_SUBST($1_PUBLIC_PROTO)

	dnl the private_prototype_header file
	$1_PRIVATE_HEADER="$5"
	AC_SUBST($1_PRIVATE_PROTO)

	AC_DEFINE_UNQUOTED([static_init_]translit([$1], [A-Z], [a-z]), [{$init_static_modules_]translit([$1], [A-Z], [a-z])[}], [Static init functions])
	ifelse([$2], , :, [rm -f $2])
])

dnl AC_PROG_CC_FLAG(flag)
AC_DEFUN(AC_PROG_CC_FLAG,
[AC_CACHE_CHECK(whether ${CC-cc} accepts -$1, ac_cv_prog_cc_$1,
[echo 'void f(){}' > conftest.c
if test -z "`${CC-cc} -$1 -c conftest.c 2>&1`"; then
  ac_cv_prog_cc_$1=yes
else
  ac_cv_prog_cc_$1=no
fi
rm -f conftest*
])])

dnl see if a declaration exists for a function or variable
dnl defines HAVE_function_DECL if it exists
dnl AC_HAVE_DECL(var, includes)
AC_DEFUN(AC_HAVE_DECL,
[
 AC_CACHE_CHECK([for $1 declaration],ac_cv_have_$1_decl,[
    AC_TRY_COMPILE([$2],[int i = (int)$1],
        ac_cv_have_$1_decl=yes,ac_cv_have_$1_decl=no)])
 if test x"$ac_cv_have_$1_decl" = x"yes"; then
    AC_DEFINE([HAVE_]translit([$1], [a-z], [A-Z])[_DECL],1,[Whether $1() is available])
 fi
])


dnl check for a function in a library, but don't
dnl keep adding the same library to the LIBS variable.
dnl AC_LIBTESTFUNC(lib,func)
AC_DEFUN(AC_LIBTESTFUNC,
[case "$LIBS" in
  *-l$1*) AC_CHECK_FUNCS($2) ;;
  *) AC_CHECK_LIB($1, $2) 
     AC_CHECK_FUNCS($2)
  ;;
  esac
])

# AC_CHECK_LIB_EXT(LIBRARY, [EXT_LIBS], [FUNCTION],
#              [ACTION-IF-FOUND], [ACTION-IF-NOT-FOUND],
#              [ADD-ACTION-IF-FOUND],[OTHER-LIBRARIES])
# ------------------------------------------------------
#
# Use a cache variable name containing both the library and function name,
# because the test really is for library $1 defining function $3, not
# just for library $1.  Separate tests with the same $1 and different $3s
# may have different results.
#
# Note that using directly AS_VAR_PUSHDEF([ac_Lib], [ac_cv_lib_$1_$3])
# is asking for trouble, since AC_CHECK_LIB($lib, fun) would give
# ac_cv_lib_$lib_fun, which is definitely not what was meant.  Hence
# the AS_LITERAL_IF indirection.
#
# FIXME: This macro is extremely suspicious.  It DEFINEs unconditionally,
# whatever the FUNCTION, in addition to not being a *S macro.  Note
# that the cache does depend upon the function we are looking for.
#
# It is on purpose we used `ac_check_lib_ext_save_LIBS' and not just
# `ac_save_LIBS': there are many macros which don't want to see `LIBS'
# changed but still want to use AC_CHECK_LIB_EXT, so they save `LIBS'.
# And ``ac_save_LIBS' is too tempting a name, so let's leave them some
# freedom.
AC_DEFUN([AC_CHECK_LIB_EXT],
[
AH_CHECK_LIB_EXT([$1])
ac_check_lib_ext_save_LIBS=$LIBS
LIBS="-l$1 $$2 $7 $LIBS"
AS_LITERAL_IF([$1],
      [AS_VAR_PUSHDEF([ac_Lib_ext], [ac_cv_lib_ext_$1])],
      [AS_VAR_PUSHDEF([ac_Lib_ext], [ac_cv_lib_ext_$1''])])dnl

m4_ifval([$3],
 [
    AH_CHECK_FUNC_EXT([$3])
    AS_LITERAL_IF([$1],
              [AS_VAR_PUSHDEF([ac_Lib_func], [ac_cv_lib_ext_$1_$3])],
              [AS_VAR_PUSHDEF([ac_Lib_func], [ac_cv_lib_ext_$1''_$3])])dnl
    AC_CACHE_CHECK([for $3 in -l$1], ac_Lib_func,
	[AC_TRY_LINK_FUNC($3,
                 [AS_VAR_SET(ac_Lib_func, yes);
		  AS_VAR_SET(ac_Lib_ext, yes)],
                 [AS_VAR_SET(ac_Lib_func, no);
		  AS_VAR_SET(ac_Lib_ext, no)])
	])
    AS_IF([test AS_VAR_GET(ac_Lib_func) = yes],
        [AC_DEFINE_UNQUOTED(AS_TR_CPP(HAVE_$3))])dnl
    AS_VAR_POPDEF([ac_Lib_func])dnl
 ],[
    AC_CACHE_CHECK([for -l$1], ac_Lib_ext,
	[AC_TRY_LINK_FUNC([main],
                 [AS_VAR_SET(ac_Lib_ext, yes)],
                 [AS_VAR_SET(ac_Lib_ext, no)])
	])
 ])
LIBS=$ac_check_lib_ext_save_LIBS

AS_IF([test AS_VAR_GET(ac_Lib_ext) = yes],
    [m4_default([$4], 
        [AC_DEFINE_UNQUOTED(AS_TR_CPP(HAVE_LIB$1))
		case "$$2" in
		    *-l$1*)
			;;
		    *)
			$2="-l$1 $$2"
			;;
		esac])
		[$6]
	    ],
	    [$5])dnl
AS_VAR_POPDEF([ac_Lib_ext])dnl
])# AC_CHECK_LIB_EXT

# AH_CHECK_LIB_EXT(LIBNAME)
# ---------------------
m4_define([AH_CHECK_LIB_EXT],
[AH_TEMPLATE(AS_TR_CPP(HAVE_LIB$1),
             [Define to 1 if you have the `]$1[' library (-l]$1[).])])

# AC_CHECK_FUNCS_EXT(FUNCTION, [ACTION-IF-FOUND], [ACTION-IF-NOT-FOUND])
# -----------------------------------------------------------------
dnl check for a function in a $LIBS and $OTHER_LIBS libraries variable.
dnl AC_CHECK_FUNC_EXT(func,OTHER_LIBS,IF-TRUE,IF-FALSE)
AC_DEFUN([AC_CHECK_FUNC_EXT],
[
    AH_CHECK_FUNC_EXT($1)	
    ac_check_func_ext_save_LIBS=$LIBS
    LIBS="$2 $LIBS"
    AS_VAR_PUSHDEF([ac_var], [ac_cv_func_ext_$1])dnl
    AC_CACHE_CHECK([for $1], ac_var,
	[AC_LINK_IFELSE([AC_LANG_FUNC_LINK_TRY([$1])],
                [AS_VAR_SET(ac_var, yes)],
                [AS_VAR_SET(ac_var, no)])])
    LIBS=$ac_check_func_ext_save_LIBS
    AS_IF([test AS_VAR_GET(ac_var) = yes], 
	    [AC_DEFINE_UNQUOTED(AS_TR_CPP([HAVE_$1])) $3], 
	    [$4])dnl
AS_VAR_POPDEF([ac_var])dnl
])# AC_CHECK_FUNC

# AH_CHECK_FUNC_EXT(FUNCNAME)
# ---------------------
m4_define([AH_CHECK_FUNC_EXT],
[AH_TEMPLATE(AS_TR_CPP(HAVE_$1),
             [Define to 1 if you have the `]$1[' function.])])

dnl Define an AC_DEFINE with ifndef guard.
dnl AC_N_DEFINE(VARIABLE [, VALUE])
define(AC_N_DEFINE,
[cat >> confdefs.h <<\EOF
[#ifndef] $1
[#define] $1 ifelse($#, 2, [$2], $#, 3, [$2], 1)
[#endif]
EOF
])

dnl Add an #include
dnl AC_ADD_INCLUDE(VARIABLE)
define(AC_ADD_INCLUDE,
[cat >> confdefs.h <<\EOF
[#include] $1
EOF
])

dnl Copied from libtool.m4
AC_DEFUN(AC_PROG_LD_GNU,
[AC_CACHE_CHECK([if the linker ($LD) is GNU ld], ac_cv_prog_gnu_ld,
[# I'd rather use --version here, but apparently some GNU ld's only accept -v.
if $LD -v 2>&1 </dev/null | egrep '(GNU|with BFD)' 1>&5; then
  ac_cv_prog_gnu_ld=yes
else
  ac_cv_prog_gnu_ld=no
fi])
])

# Configure paths for LIBXML2
# Toshio Kuratomi 2001-04-21
# Adapted from:
# Configure paths for GLIB
# Owen Taylor     97-11-3

dnl AM_PATH_XML2([MINIMUM-VERSION, [ACTION-IF-FOUND [, ACTION-IF-NOT-FOUND]]])
dnl Test for XML, and define XML_CFLAGS and XML_LIBS
dnl
AC_DEFUN(AM_PATH_XML2,[ 
AC_ARG_WITH(xml-prefix,
            [  --with-xml-prefix=PFX   Prefix where libxml is installed (optional)],
            xml_config_prefix="$withval", xml_config_prefix="")
AC_ARG_WITH(xml-exec-prefix,
            [  --with-xml-exec-prefix=PFX Exec prefix where libxml is installed (optional)],
            xml_config_exec_prefix="$withval", xml_config_exec_prefix="")
AC_ARG_ENABLE(xmltest,
              [  --disable-xmltest       Do not try to compile and run a test LIBXML program],,
              enable_xmltest=yes)

  if test x$xml_config_exec_prefix != x ; then
     xml_config_args="$xml_config_args --exec-prefix=$xml_config_exec_prefix"
     if test x${XML2_CONFIG+set} != xset ; then
        XML2_CONFIG=$xml_config_exec_prefix/bin/xml2-config
     fi
  fi
  if test x$xml_config_prefix != x ; then
     xml_config_args="$xml_config_args --prefix=$xml_config_prefix"
     if test x${XML2_CONFIG+set} != xset ; then
        XML2_CONFIG=$xml_config_prefix/bin/xml2-config
     fi
  fi

  AC_PATH_PROG(XML2_CONFIG, xml2-config, no)
  min_xml_version=ifelse([$1], ,2.0.0,[$1])
  AC_MSG_CHECKING(for libxml - version >= $min_xml_version)
  no_xml=""
  if test "$XML2_CONFIG" = "no" ; then
    no_xml=yes
  else
    XML_CFLAGS=`$XML2_CONFIG $xml_config_args --cflags`
    XML_LIBS=`$XML2_CONFIG $xml_config_args --libs`
    xml_config_major_version=`$XML2_CONFIG $xml_config_args --version | \
           sed 's/\([[0-9]]*\).\([[0-9]]*\).\([[0-9]]*\)/\1/'`
    xml_config_minor_version=`$XML2_CONFIG $xml_config_args --version | \
           sed 's/\([[0-9]]*\).\([[0-9]]*\).\([[0-9]]*\)/\2/'`
    xml_config_micro_version=`$XML2_CONFIG $xml_config_args --version | \
           sed 's/\([[0-9]]*\).\([[0-9]]*\).\([[0-9]]*\)/\3/'`
    if test "x$enable_xmltest" = "xyes" ; then
      ac_save_CFLAGS="$CFLAGS"
      ac_save_LIBS="$LIBS"
      CFLAGS="$CFLAGS $XML_CFLAGS"
      LIBS="$XML_LIBS $LIBS"
dnl
dnl Now check if the installed libxml is sufficiently new.
dnl (Also sanity checks the results of xml2-config to some extent)
dnl
      rm -f conf.xmltest
      AC_TRY_RUN([
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include <libxml/xmlversion.h>

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

  system("touch conf.xmltest");

  /* Capture xml2-config output via autoconf/configure variables */
  /* HP/UX 9 (%@#!) writes to sscanf strings */
  tmp_version = (char *)strdup("$min_xml_version");
  if (sscanf(tmp_version, "%d.%d.%d", &major, &minor, &micro) != 3) {
     printf("%s, bad version string from xml2-config\n", "$min_xml_version");
     exit(1);
   }
   free(tmp_version);

   /* Capture the version information from the header files */
   tmp_version = (char *)strdup(LIBXML_DOTTED_VERSION);
   if (sscanf(tmp_version, "%d.%d.%d", &xml_major_version, &xml_minor_version, &xml_micro_version) != 3) {
     printf("%s, bad version string from libxml includes\n", "LIBXML_DOTTED_VERSION");
     exit(1);
   }
   free(tmp_version);

 /* Compare xml2-config output to the libxml headers */
  if ((xml_major_version != $xml_config_major_version) ||
      (xml_minor_version != $xml_config_minor_version) ||
      (xml_micro_version != $xml_config_micro_version))
    {
      printf("*** libxml header files (version %d.%d.%d) do not match\n",
         xml_major_version, xml_minor_version, xml_micro_version);
      printf("*** xml2-config (version %d.%d.%d)\n",
         $xml_config_major_version, $xml_config_minor_version, $xml_config_micro_version);
      return 1;
    } 
/* Compare the headers to the library to make sure we match */
  /* Less than ideal -- doesn't provide us with return value feedback, 
   * only exits if there's a serious mismatch between header and library.
   */
    LIBXML_TEST_VERSION;

    /* Test that the library is greater than our minimum version */
    if ((xml_major_version > major) ||
        ((xml_major_version == major) && (xml_minor_version > minor)) ||
        ((xml_major_version == major) && (xml_minor_version == minor) &&
        (xml_micro_version >= micro)))
      {
        return 0;
       }
     else
      {
        printf("\n*** An old version of libxml (%d.%d.%d) was found.\n",
               xml_major_version, xml_minor_version, xml_micro_version);
        printf("*** You need a version of libxml newer than %d.%d.%d. The latest version of\n",
           major, minor, micro);
        printf("*** libxml is always available from ftp://ftp.xmlsoft.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 xml2-config shell script is\n");
        printf("*** being found. The easiest way to fix this is to remove the old version\n");
        printf("*** of LIBXML, but you can also set the XML2_CONFIG environment to point to the\n");
        printf("*** correct copy of xml2-config. (In this case, you will have to\n");
        printf("*** modify your LD_LIBRARY_PATH enviroment variable, or edit /etc/ld.so.conf\n");
        printf("*** so that the correct libraries are found at run-time))\n");
    }
  return 1;
}
],, no_xml=yes,[echo $ac_n "cross compiling; assumed OK... $ac_c"])
       CFLAGS="$ac_save_CFLAGS"
       LIBS="$ac_save_LIBS"
     fi
  fi

  if test "x$no_xml" = x ; then
     AC_MSG_RESULT(yes (version $xml_config_major_version.$xml_config_minor_version.$xml_config_micro_version))
     ifelse([$2], , :, [$2])     
  else
     AC_MSG_RESULT(no)
     if test "$XML2_CONFIG" = "no" ; then
       echo "*** The xml2-config script installed by LIBXML could not be found"
       echo "*** If libxml was installed in PREFIX, make sure PREFIX/bin is in"
       echo "*** your path, or set the XML2_CONFIG environment variable to the"
       echo "*** full path to xml2-config."
     else
       if test -f conf.xmltest ; then
        :
       else
          echo "*** Could not run libxml test program, checking why..."
          CFLAGS="$CFLAGS $XML_CFLAGS"
          LIBS="$LIBS $XML_LIBS"
          AC_TRY_LINK([
#include <libxml/xmlversion.h>
#include <stdio.h>
],      [ LIBXML_TEST_VERSION; return 0;],
        [ echo "*** The test program compiled, but did not run. This usually means"
          echo "*** that the run-time linker is not finding LIBXML or finding the wrong"
          echo "*** version of LIBXML. If it is not finding LIBXML, 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 occured. This usually means LIBXML was incorrectly installed"
          echo "*** or that you have moved LIBXML since it was installed. In the latter case, you"
          echo "*** may want to edit the xml2-config script: $XML2_CONFIG" ])
          CFLAGS="$ac_save_CFLAGS"
          LIBS="$ac_save_LIBS"
       fi
     fi

     XML_CFLAGS=""
     XML_LIBS=""
     ifelse([$3], , :, [$3])
  fi
  AC_SUBST(XML_CFLAGS)
  AC_SUBST(XML_LIBS)
  rm -f conf.xmltest
])

# =========================================================================
# AM_PATH_MYSQL : MySQL library

dnl AM_PATH_MYSQL([MINIMUM-VERSION, [ACTION-IF-FOUND [, ACTION-IF-NOT-FOUND]]])
dnl Test for MYSQL, and define MYSQL_CFLAGS and MYSQL_LIBS
dnl
AC_DEFUN(AM_PATH_MYSQL,
[dnl
dnl Get the cflags and libraries from the mysql_config script
dnl
AC_ARG_WITH(mysql-prefix,[  --with-mysql-prefix=PFX   Prefix where MYSQL is installed (optional)],
            mysql_prefix="$withval", mysql_prefix="")
AC_ARG_WITH(mysql-exec-prefix,[  --with-mysql-exec-prefix=PFX Exec prefix where MYSQL is installed (optional)],
            mysql_exec_prefix="$withval", mysql_exec_prefix="")

  if test x$mysql_exec_prefix != x ; then
     mysql_args="$mysql_args --exec-prefix=$mysql_exec_prefix"
     if test x${MYSQL_CONFIG+set} != xset ; then
        MYSQL_CONFIG=$mysql_exec_prefix/bin/mysql_config
     fi
  fi
  if test x$mysql_prefix != x ; then
     mysql_args="$mysql_args --prefix=$mysql_prefix"
     if test x${MYSQL_CONFIG+set} != xset ; then
        MYSQL_CONFIG=$mysql_prefix/bin/mysql_config
     fi
  fi

  AC_REQUIRE([AC_CANONICAL_TARGET])
  AC_PATH_PROG(MYSQL_CONFIG, mysql_config, no)
  AC_MSG_CHECKING(for MYSQL)
  no_mysql=""
  if test "$MYSQL_CONFIG" = "no" ; then
    MYSQL_CFLAGS=""
    MYSQL_LIBS=""
    AC_MSG_RESULT(no)
     ifelse([$2], , :, [$2])
  else
    MYSQL_CFLAGS=`$MYSQL_CONFIG $mysqlconf_args --cflags | sed -e "s/'//g"`
    MYSQL_LIBS=`$MYSQL_CONFIG $mysqlconf_args --libs | sed -e "s/'//g"`
    AC_MSG_RESULT(yes)
    ifelse([$1], , :, [$1])
  fi
  AC_SUBST(MYSQL_CFLAGS)
  AC_SUBST(MYSQL_LIBS)
])

dnl Removes -I/usr/include/? from given variable
AC_DEFUN(CFLAGS_REMOVE_USR_INCLUDE,[
  ac_new_flags=""
  for i in [$]$1; do
    case [$]i in
    -I/usr/include|-I/usr/include/) ;;
    *) ac_new_flags="[$]ac_new_flags [$]i" ;;
    esac
  done
  $1=[$]ac_new_flags
])
    
dnl Removes -L/usr/lib/? from given variable
AC_DEFUN(LIB_REMOVE_USR_LIB,[
  ac_new_flags=""
  for i in [$]$1; do
    case [$]i in
    -L/usr/lib|-L/usr/lib/) ;;
    *) ac_new_flags="[$]ac_new_flags [$]i" ;;
    esac
  done
  $1=[$]ac_new_flags
])

dnl From Bruno Haible.

AC_DEFUN(jm_ICONV,
[
  dnl Some systems have iconv in libc, some have it in libiconv (OSF/1 and
  dnl those with the standalone portable libiconv installed).
  AC_MSG_CHECKING(for iconv in $1)
    jm_cv_func_iconv="no"
    jm_cv_lib_iconv=no
    jm_cv_giconv=no
    AC_TRY_LINK([#include <stdlib.h>
#include <giconv.h>],
      [iconv_t cd = iconv_open("","");
       iconv(cd,NULL,NULL,NULL,NULL);
       iconv_close(cd);],
      jm_cv_func_iconv=yes
      jm_cv_giconv=yes)

    if test "$jm_cv_func_iconv" != yes; then
      AC_TRY_LINK([#include <stdlib.h>
#include <iconv.h>],
        [iconv_t cd = iconv_open("","");
         iconv(cd,NULL,NULL,NULL,NULL);
         iconv_close(cd);],
        jm_cv_func_iconv=yes)

        if test "$jm_cv_lib_iconv" != yes; then
          jm_save_LIBS="$LIBS"
          LIBS="$LIBS -lgiconv"
          AC_TRY_LINK([#include <stdlib.h>
#include <giconv.h>],
            [iconv_t cd = iconv_open("","");
             iconv(cd,NULL,NULL,NULL,NULL);
             iconv_close(cd);],
            jm_cv_lib_iconv=yes
            jm_cv_func_iconv=yes
            jm_cv_giconv=yes)
          LIBS="$jm_save_LIBS"

      if test "$jm_cv_func_iconv" != yes; then
        jm_save_LIBS="$LIBS"
        LIBS="$LIBS -liconv"
        AC_TRY_LINK([#include <stdlib.h>
#include <iconv.h>],
          [iconv_t cd = iconv_open("","");
           iconv(cd,NULL,NULL,NULL,NULL);
           iconv_close(cd);],
          jm_cv_lib_iconv=yes
          jm_cv_func_iconv=yes)
        LIBS="$jm_save_LIBS"
        fi
      fi
    fi

  if test "$jm_cv_func_iconv" = yes; then
    if test "$jm_cv_giconv" = yes; then
      AC_DEFINE(HAVE_GICONV, 1, [What header to include for iconv() function: giconv.h])
      AC_MSG_RESULT(yes)
      ICONV_FOUND=yes
    else
      AC_DEFINE(HAVE_ICONV, 1, [What header to include for iconv() function: iconv.h])
      AC_MSG_RESULT(yes)
      ICONV_FOUND=yes
    fi
  else
    AC_MSG_RESULT(no)
  fi
  if test "$jm_cv_lib_iconv" = yes; then
    if test "$jm_cv_giconv" = yes; then
      LIBS="$LIBS -lgiconv"
    else
      LIBS="$LIBS -liconv"
    fi
  fi
])

dnl CFLAGS_ADD_DIR(CFLAGS, $INCDIR)
dnl This function doesn't add -I/usr/include into CFLAGS
AC_DEFUN(CFLAGS_ADD_DIR,[
if test "$2" != "/usr/include" ; then
    $1="$$1 -I$2"
fi
])

dnl LIB_ADD_DIR(LDFLAGS, $LIBDIR)
dnl This function doesn't add -L/usr/lib into LDFLAGS
AC_DEFUN(LIB_ADD_DIR,[
if test "$2" != "/usr/lib" ; then
    $1="$$1 -L$2"
fi
])

dnl AC_ENABLE_SHARED - implement the --enable-shared flag
dnl Usage: AC_ENABLE_SHARED[(DEFAULT)]
dnl   Where DEFAULT is either `yes' or `no'.  If omitted, it defaults to
dnl   `yes'.
AC_DEFUN([AC_ENABLE_SHARED],
[define([AC_ENABLE_SHARED_DEFAULT], ifelse($1, no, no, yes))dnl
AC_ARG_ENABLE(shared,
changequote(<<, >>)dnl
<<  --enable-shared[=PKGS]    build shared libraries [default=>>AC_ENABLE_SHARED_DEFAULT],
changequote([, ])dnl
[p=${PACKAGE-default}
case $enableval in
yes) enable_shared=yes ;;
no) enable_shared=no ;;
*)
  enable_shared=no
  # Look at the argument we got.  We use all the common list separators.
  IFS="${IFS=   }"; ac_save_ifs="$IFS"; IFS="${IFS}:,"
  for pkg in $enableval; do
    if test "X$pkg" = "X$p"; then
      enable_shared=yes
    fi

  done
  IFS="$ac_save_ifs"
  ;;
esac],
enable_shared=AC_ENABLE_SHARED_DEFAULT)dnl
])

dnl AC_ENABLE_STATIC - implement the --enable-static flag
dnl Usage: AC_ENABLE_STATIC[(DEFAULT)]
dnl   Where DEFAULT is either `yes' or `no'.  If omitted, it defaults to
dnl   `yes'.
AC_DEFUN([AC_ENABLE_STATIC],
[define([AC_ENABLE_STATIC_DEFAULT], ifelse($1, no, no, yes))dnl
AC_ARG_ENABLE(static,
changequote(<<, >>)dnl
<<  --enable-static[=PKGS]    build static libraries [default=>>AC_ENABLE_STATIC_DEFAULT],
changequote([, ])dnl
[p=${PACKAGE-default}
case $enableval in
yes) enable_static=yes ;;
no) enable_static=no ;;
*)
  enable_static=no
  # Look at the argument we got.  We use all the common list separators.
  IFS="${IFS=   }"; ac_save_ifs="$IFS"; IFS="${IFS}:,"
  for pkg in $enableval; do
    if test "X$pkg" = "X$p"; then
      enable_static=yes
    fi
  done
  IFS="$ac_save_ifs"
  ;;
esac],
enable_static=AC_ENABLE_STATIC_DEFAULT)dnl
])

dnl AC_DISABLE_STATIC - set the default static flag to --disable-static
AC_DEFUN([AC_DISABLE_STATIC],
[AC_BEFORE([$0],[AC_LIBTOOL_SETUP])dnl
AC_ENABLE_STATIC(no)])


dnl PKG_CHECK_MODULES(GSTUFF, gtk+-2.0 >= 1.3 glib = 1.3.4, action-if, action-not)
dnl defines GSTUFF_LIBS, GSTUFF_CFLAGS, see pkg-config man page
dnl also defines GSTUFF_PKG_ERRORS on error
AC_DEFUN(PKG_CHECK_MODULES, [
  succeeded=no

  if test -z "$PKG_CONFIG"; then
    AC_PATH_PROG(PKG_CONFIG, pkg-config, no)
  fi

  if test "$PKG_CONFIG" = "no" ; then
     echo "*** The pkg-config script could not be found. Make sure it is"
     echo "*** in your path, or set the PKG_CONFIG environment variable"
     echo "*** to the full path to pkg-config."
     echo "*** Or see http://www.freedesktop.org/software/pkgconfig to get pkg-config."
  else
     PKG_CONFIG_MIN_VERSION=0.9.0
     if $PKG_CONFIG --atleast-pkgconfig-version $PKG_CONFIG_MIN_VERSION; then
        AC_MSG_CHECKING(for $2)

        if $PKG_CONFIG --exists "$2" ; then
            AC_MSG_RESULT(yes)
            succeeded=yes

            AC_MSG_CHECKING($1_CFLAGS)
            $1_CFLAGS=`$PKG_CONFIG --cflags "$2"`
            AC_MSG_RESULT($$1_CFLAGS)

            AC_MSG_CHECKING($1_LIBS)
            $1_LIBS=`$PKG_CONFIG --libs "$2"`
            AC_MSG_RESULT($$1_LIBS)
        else
            $1_CFLAGS=""
            $1_LIBS=""
            ## If we have a custom action on failure, don't print errors, but 
            ## do set a variable so people can do so.
            $1_PKG_ERRORS=`$PKG_CONFIG --errors-to-stdout --print-errors "$2"`
            ifelse([$4], ,echo $$1_PKG_ERRORS,)
        fi

        AC_SUBST($1_CFLAGS)
        AC_SUBST($1_LIBS)
     else
        echo "*** Your version of pkg-config is too old. You need version $PKG_CONFIG_MIN_VERSION or newer."
        echo "*** See http://www.freedesktop.org/software/pkgconfig"
     fi
  fi

  if test $succeeded = yes; then
     ifelse([$3], , :, [$3])
  else
     ifelse([$4], , AC_MSG_ERROR([Library requirements ($2) not met; consider adjusting the PKG_CONFIG_PATH environment variable if your libraries are in a nonstandard prefix so pkg-config can find them.]), [$4])
  fi
])