1
# gnulib-common.m4 serial 6
2
dnl Copyright (C) 2007-2008 Free Software Foundation, Inc.
3
dnl This file is free software; the Free Software Foundation
4
dnl gives unlimited permission to copy and/or distribute it,
5
dnl with or without modifications, as long as this notice is preserved.
8
# is expanded unconditionally through gnulib-tool magic.
9
AC_DEFUN([gl_COMMON], [
10
dnl Use AC_REQUIRE here, so that the code is expanded once only.
11
AC_REQUIRE([gl_COMMON_BODY])
13
AC_DEFUN([gl_COMMON_BODY], [
14
AH_VERBATIM([isoc99_inline],
15
[/* Work around a bug in Apple GCC 4.0.1 build 5465: In C99 mode, it supports
16
the ISO C 99 semantics of 'extern inline' (unlike the GNU C semantics of
17
earlier versions), but does not display it by setting __GNUC_STDC_INLINE__.
18
__APPLE__ && __MACH__ test for MacOS X.
19
__APPLE_CC__ tests for the Apple compiler and its version.
20
__STDC_VERSION__ tests for the C99 mode. */
21
#if defined __APPLE__ && defined __MACH__ && __APPLE_CC__ >= 5465 && !defined __cplusplus && __STDC_VERSION__ >= 199901L && !defined __GNUC_STDC_INLINE__
22
# define __GNUC_STDC_INLINE__ 1
24
AH_VERBATIM([unused_parameter],
25
[/* Define as a marker that can be attached to function parameter declarations
26
for parameters that are not used. This helps to reduce warnings, such as
27
from GCC -Wunused-parameter. */
28
#if __GNUC__ >= 3 || (__GNUC__ == 2 && __GNUC_MINOR__ >= 7)
29
# define _UNUSED_PARAMETER_ __attribute__ ((__unused__))
31
# define _UNUSED_PARAMETER_
36
# gl_MODULE_INDICATOR([modulename])
37
# defines a C macro indicating the presence of the given module.
38
AC_DEFUN([gl_MODULE_INDICATOR],
40
AC_DEFINE([GNULIB_]translit([$1],[abcdefghijklmnopqrstuvwxyz./-],[ABCDEFGHIJKLMNOPQRSTUVWXYZ___]), [1],
41
[Define to 1 when using the gnulib module ]$1[.])
45
# is a backport of autoconf-2.59c's m4_foreach_w.
46
# Remove this macro when we can assume autoconf >= 2.60.
47
m4_ifndef([m4_foreach_w],
48
[m4_define([m4_foreach_w],
49
[m4_foreach([$1], m4_split(m4_normalize([$2]), [ ]), [$3])])])
52
# is a backport of autoconf-2.60's AC_PROG_MKDIR_P.
53
# Remove this macro when we can assume autoconf >= 2.60.
54
m4_ifdef([AC_PROG_MKDIR_P], [], [
55
AC_DEFUN([AC_PROG_MKDIR_P],
56
[AC_REQUIRE([AM_PROG_MKDIR_P])dnl defined by automake
58
AC_SUBST([MKDIR_P])])])
61
# This definition overrides the AC_C_RESTRICT macro from autoconf 2.60..2.61,
62
# so that mixed use of GNU C and GNU C++ and mixed use of Sun C and Sun C++
64
# This definition can be removed once autoconf >= 2.62 can be assumed.
65
AC_DEFUN([AC_C_RESTRICT],
66
[AC_CACHE_CHECK([for C/C++ restrict keyword], ac_cv_c_restrict,
68
# The order here caters to the fact that C++ does not require restrict.
69
for ac_kw in __restrict __restrict__ _Restrict restrict; do
70
AC_COMPILE_IFELSE([AC_LANG_PROGRAM(
71
[[typedef int * int_ptr;
72
int foo (int_ptr $ac_kw ip) {
79
[ac_cv_c_restrict=$ac_kw])
80
test "$ac_cv_c_restrict" != no && break
83
AH_VERBATIM([restrict],
84
[/* Define to the equivalent of the C99 'restrict' keyword, or to
85
nothing if this is not supported. Do not define if restrict is
86
supported directly. */
88
/* Work around a bug in Sun C++: it does not support _Restrict, even
89
though the corresponding Sun C compiler does, which causes
90
"#define restrict _Restrict" in the previous line. Perhaps some future
91
version of Sun C++ will work with _Restrict; if so, it'll probably
92
define __RESTRICT, just as Sun C does. */
93
#if defined __SUNPRO_CC && !defined __RESTRICT
96
case $ac_cv_c_restrict in
98
no) AC_DEFINE([restrict], []) ;;
99
*) AC_DEFINE_UNQUOTED([restrict], [$ac_cv_c_restrict]) ;;
added
removed
gnulib/m4/gnulib-common.m4
