~drizzle-trunk/drizzle/development

# gnulib-common.m4 serial 6

dnl Copyright (C) 2007-2008 Free Software Foundation, Inc.

dnl This file is free software; the Free Software Foundation

dnl gives unlimited permission to copy and/or distribute it,

dnl with or without modifications, as long as this notice is preserved.

# gl_COMMON

# is expanded unconditionally through gnulib-tool magic.

AC_DEFUN([gl_COMMON], [

  dnl Use AC_REQUIRE here, so that the code is expanded once only.

  AC_REQUIRE([gl_COMMON_BODY])

])

AC_DEFUN([gl_COMMON_BODY], [

  AH_VERBATIM([isoc99_inline],

[/* Work around a bug in Apple GCC 4.0.1 build 5465: In C99 mode, it supports

   the ISO C 99 semantics of 'extern inline' (unlike the GNU C semantics of

   earlier versions), but does not display it by setting __GNUC_STDC_INLINE__.

   __APPLE__ && __MACH__ test for MacOS X.

   __APPLE_CC__ tests for the Apple compiler and its version.

   __STDC_VERSION__ tests for the C99 mode.  */

#if defined __APPLE__ && defined __MACH__ && __APPLE_CC__ >= 5465 && !defined __cplusplus && __STDC_VERSION__ >= 199901L && !defined __GNUC_STDC_INLINE__

# define __GNUC_STDC_INLINE__ 1

#endif])

  AH_VERBATIM([unused_parameter],

[/* Define as a marker that can be attached to function parameter declarations

   for parameters that are not used.  This helps to reduce warnings, such as

   from GCC -Wunused-parameter.  */

#if __GNUC__ >= 3 || (__GNUC__ == 2 && __GNUC_MINOR__ >= 7)

# define _UNUSED_PARAMETER_ __attribute__ ((__unused__))

#else

# define _UNUSED_PARAMETER_

#endif

])

])

# gl_MODULE_INDICATOR([modulename])

# defines a C macro indicating the presence of the given module.

AC_DEFUN([gl_MODULE_INDICATOR],

[

  AC_DEFINE([GNULIB_]translit([$1],[abcdefghijklmnopqrstuvwxyz./-],[ABCDEFGHIJKLMNOPQRSTUVWXYZ___]), [1],

    [Define to 1 when using the gnulib module ]$1[.])

])

# m4_foreach_w

# is a backport of autoconf-2.59c's m4_foreach_w.

# Remove this macro when we can assume autoconf >= 2.60.

m4_ifndef([m4_foreach_w],

  [m4_define([m4_foreach_w],

    [m4_foreach([$1], m4_split(m4_normalize([$2]), [ ]), [$3])])])

# AC_PROG_MKDIR_P

# is a backport of autoconf-2.60's AC_PROG_MKDIR_P.

# Remove this macro when we can assume autoconf >= 2.60.

m4_ifdef([AC_PROG_MKDIR_P], [], [

  AC_DEFUN([AC_PROG_MKDIR_P],

    [AC_REQUIRE([AM_PROG_MKDIR_P])dnl defined by automake

     MKDIR_P='$(mkdir_p)'

     AC_SUBST([MKDIR_P])])])

# AC_C_RESTRICT

# This definition overrides the AC_C_RESTRICT macro from autoconf 2.60..2.61,

# so that mixed use of GNU C and GNU C++ and mixed use of Sun C and Sun C++

# works.

# This definition can be removed once autoconf >= 2.62 can be assumed.

AC_DEFUN([AC_C_RESTRICT],

[AC_CACHE_CHECK([for C/C++ restrict keyword], ac_cv_c_restrict,

  [ac_cv_c_restrict=no

   # The order here caters to the fact that C++ does not require restrict.

   for ac_kw in __restrict __restrict__ _Restrict restrict; do

     AC_COMPILE_IFELSE([AC_LANG_PROGRAM(

      [[typedef int * int_ptr;

	int foo (int_ptr $ac_kw ip) {

	return ip[0];

       }]],

      [[int s[1];

	int * $ac_kw t = s;

	t[0] = 0;

	return foo(t)]])],

      [ac_cv_c_restrict=$ac_kw])

     test "$ac_cv_c_restrict" != no && break

   done

  ])

 AH_VERBATIM([restrict],

[/* Define to the equivalent of the C99 'restrict' keyword, or to

   nothing if this is not supported.  Do not define if restrict is

   supported directly.  */

#undef restrict

/* Work around a bug in Sun C++: it does not support _Restrict, even

   though the corresponding Sun C compiler does, which causes

   "#define restrict _Restrict" in the previous line.  Perhaps some future

   version of Sun C++ will work with _Restrict; if so, it'll probably

   define __RESTRICT, just as Sun C does.  */

#if defined __SUNPRO_CC && !defined __RESTRICT

# define _Restrict

#endif])

 case $ac_cv_c_restrict in

   restrict) ;;

   no) AC_DEFINE([restrict], []) ;;

   *)  AC_DEFINE_UNQUOTED([restrict], [$ac_cv_c_restrict]) ;;

 esac

])