## Portability defines that help interoperate with classic and modern autoconfs

ifdef([AC_TR_SH],[

define([GLIB_TR_SH],[AC_TR_SH([$1])])

define([GLIB_TR_CPP],[AC_TR_CPP([$1])])

], [

define([GLIB_TR_SH],

       [patsubst(translit([[$1]], [*+], [pp]), [[^a-zA-Z0-9_]], [_])])

define([GLIB_TR_CPP],

       [patsubst(translit([[$1]],

  	                  [*abcdefghijklmnopqrstuvwxyz],

 			  [PABCDEFGHIJKLMNOPQRSTUVWXYZ]),

		 [[^A-Z0-9_]], [_])])

])

# GLIB_AC_DIVERT_BEFORE_HELP(STUFF)

# ---------------------------------

# Put STUFF early enough so that they are available for $ac_help expansion.

# Handle both classic (<= v2.13) and modern autoconf

AC_DEFUN([GLIB_AC_DIVERT_BEFORE_HELP],

[ifdef([m4_divert_text], [m4_divert_text([NOTICE],[$1])],

       [ifdef([AC_DIVERT], [AC_DIVERT([NOTICE],[$1])],

              [AC_DIVERT_PUSH(AC_DIVERSION_NOTICE)dnl

$1

AC_DIVERT_POP()])])])

dnl GLIB_IF_VAR_EQ (ENV_VAR, VALUE [, EQUALS_ACTION] [, ELSE_ACTION])

AC_DEFUN([GLIB_IF_VAR_EQ],[

        case "$[$1]" in

        "[$2]"[)]

                [$3]

                ;;

        *[)]

                [$4]

                ;;

        esac

])

dnl GLIB_STR_CONTAINS (SRC_STRING, SUB_STRING [, CONTAINS_ACTION] [, ELSE_ACTION])

AC_DEFUN([GLIB_STR_CONTAINS],[

        case "[$1]" in

        *"[$2]"*[)]

                [$3]

                ;;

        *[)]

                [$4]

                ;;

        esac

])

dnl GLIB_ADD_TO_VAR (ENV_VARIABLE, CHECK_STRING, ADD_STRING)

AC_DEFUN([GLIB_ADD_TO_VAR],[

        GLIB_STR_CONTAINS($[$1], [$2], [$1]="$[$1]", [$1]="$[$1] [$3]")

])

# GLIB_SIZEOF (INCLUDES, TYPE, ALIAS)

# ---------------------------------------------------------------

# The definition here is based of that of AC_CHECK_SIZEOF

AC_DEFUN([GLIB_SIZEOF],

[AS_LITERAL_IF([$3], [],

               [AC_FATAL([$0: requires literal arguments])])dnl

AC_CACHE_CHECK([size of $2], AS_TR_SH([glib_cv_sizeof_$3]),

[ # The cast to unsigned long works around a bug in the HP C Compiler

  # version HP92453-01 B.11.11.23709.GP, which incorrectly rejects

  # declarations like `int a3[[(sizeof (unsigned char)) >= 0]];'.

  # This bug is HP SR number 8606223364.

  _AC_COMPUTE_INT([(long) (sizeof ($2))],

                  [AS_TR_SH([glib_cv_sizeof_$3])],

                  [AC_INCLUDES_DEFAULT([$1])],

                  [AC_MSG_ERROR([cannot compute sizeof ($2), 77])])

])dnl

AC_DEFINE_UNQUOTED(GLIB_TR_CPP(glib_sizeof_$3), $AS_TR_SH([glib_cv_sizeof_$3]),

                   [The size of $3, as computed by sizeof.])

])# GLIB_SIZEOF

dnl GLIB_BYTE_CONTENTS (INCLUDES, TYPE, ALIAS, N_BYTES, INITIALIZER)

AC_DEFUN([GLIB_BYTE_CONTENTS],

[pushdef([glib_ByteContents], GLIB_TR_SH([glib_cv_byte_contents_$3]))dnl

AC_CACHE_CHECK([byte contents of $5], glib_ByteContents,

[AC_TRY_RUN([#include <stdio.h>

$1

main()

{

  static $2 tv = $5;

  char *p = (char*) &tv;

  int i;

  FILE *f=fopen("conftestval", "w");

  if (!f) exit(1);

  for (i = 0; i < $4; i++)

    fprintf(f, "%s%d", i?",":"", *(p++));

  fprintf(f, "\n");

  exit(0);

}], 

   [glib_ByteContents=`cat conftestval`  dnl''

], 

   [glib_ByteContents=no],

   [glib_ByteContents=no])])

AC_DEFINE_UNQUOTED(GLIB_TR_CPP(glib_byte_contents_$3), [$[]glib_ByteContents],

	[Byte contents of $3])

popdef([glib_ByteContents])dnl

])

# GLIB_CHECK_VALUE(SYMBOL, INCLUDES, ACTION-IF-FAIL)

# ---------------------------------------------------------------

AC_DEFUN([GLIB_CHECK_VALUE],

[AC_CACHE_CHECK([value of $1], AS_TR_SH([glib_cv_value_$1]),

  [_AC_COMPUTE_INT([$1], AS_TR_SH([glib_cv_value_$1]), [$2], [$3])])

])dnl

# GLIB_CHECK_COMPILE_WARNINGS(PROGRAM, [ACTION-IF-FOUND], [ACTION-IF-NOT-FOUND])

# ---------------------------------------------------------------------

# Try to compile PROGRAM, check for warnings

m4_define([GLIB_CHECK_COMPILE_WARNINGS],

[m4_ifvaln([$1], [AC_LANG_CONFTEST([$1])])dnl

rm -f conftest.$ac_objext

glib_ac_compile_save="$ac_compile"

ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext'

AS_IF([_AC_EVAL_STDERR($ac_compile) &&

         AC_TRY_COMMAND([(if test -s conftest.err; then false ; else true; fi)])],

      [$2],

      [echo "$as_me: failed program was:" >&AS_MESSAGE_LOG_FD

cat conftest.$ac_ext >&AS_MESSAGE_LOG_FD

m4_ifvaln([$3],[$3])dnl])

ac_compile="$glib_ac_compile_save"

rm -f conftest.$ac_objext conftest.err m4_ifval([$1], [conftest.$ac_ext])[]dnl

])# GLIB_CHECK_COMPILE_WARNINGS

# GLIB_ASSERT_SET(VARIABLE)

# -------------------------

AC_DEFUN([GLIB_ASSERT_SET],

[if test "x${$1+set}" != "xset" ; then

  AC_MSG_ERROR($1 [must be set in cache file when cross-compiling.])

fi

])dnl