Mercurial > gnulib

annotate m4/gnulib-common.m4 @ 40057:b06060465f09

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
maint: Run 'make update-copyright'
author Paul Eggert <eggert@cs.ucla.edu>
date Tue, 01 Jan 2019 00:25:11 +0100
parents 4a9dba57ac9e
children c34f677e6117
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
39961
4a9dba57ac9e gnulib-common.m4: port _Noreturn to C++
Paul Eggert <eggert@cs.ucla.edu>
parents: 39944
diff changeset
1 # gnulib-common.m4 serial 41
40057
b06060465f09 maint: Run 'make update-copyright'
Paul Eggert <eggert@cs.ucla.edu>
parents: 39961
diff changeset
2 dnl Copyright (C) 2007-2019 Free Software Foundation, Inc.
7788
e3424061171f Back from an automatic module-indicator macro to a module-indicator macro
Bruno Haible <bruno@clisp.org>
parents:
diff changeset
3 dnl This file is free software; the Free Software Foundation
e3424061171f Back from an automatic module-indicator macro to a module-indicator macro
Bruno Haible <bruno@clisp.org>
parents:
diff changeset
4 dnl gives unlimited permission to copy and/or distribute it,
e3424061171f Back from an automatic module-indicator macro to a module-indicator macro
Bruno Haible <bruno@clisp.org>
parents:
diff changeset
5 dnl with or without modifications, as long as this notice is preserved.
e3424061171f Back from an automatic module-indicator macro to a module-indicator macro
Bruno Haible <bruno@clisp.org>
parents:
diff changeset
6
39944
eb64273b66c2 Assume Autoconf >= 2.63.
Bruno Haible <bruno@clisp.org>
parents: 39722
diff changeset
7 AC_PREREQ([2.62])
eb64273b66c2 Assume Autoconf >= 2.63.
Bruno Haible <bruno@clisp.org>
parents: 39722
diff changeset
8
9887
f2408973947f Fix __GNUC_STDC_INLINE__ predefine with Apple GCC on MacOS X 10.5.
Bruno Haible <bruno@clisp.org>
parents: 9411
diff changeset
9 # gl_COMMON
f2408973947f Fix __GNUC_STDC_INLINE__ predefine with Apple GCC on MacOS X 10.5.
Bruno Haible <bruno@clisp.org>
parents: 9411
diff changeset
10 # is expanded unconditionally through gnulib-tool magic.
f2408973947f Fix __GNUC_STDC_INLINE__ predefine with Apple GCC on MacOS X 10.5.
Bruno Haible <bruno@clisp.org>
parents: 9411
diff changeset
11 AC_DEFUN([gl_COMMON], [
f2408973947f Fix __GNUC_STDC_INLINE__ predefine with Apple GCC on MacOS X 10.5.
Bruno Haible <bruno@clisp.org>
parents: 9411
diff changeset
12 dnl Use AC_REQUIRE here, so that the code is expanded once only.
11094
5e937a2f5647 Backport improved autoconf semantics of AC_DEFUN_ONCE.
Eric Blake <ebb9@byu.net>
parents: 11053
diff changeset
13 AC_REQUIRE([gl_00GNULIB])
9887
f2408973947f Fix __GNUC_STDC_INLINE__ predefine with Apple GCC on MacOS X 10.5.
Bruno Haible <bruno@clisp.org>
parents: 9411
diff changeset
14 AC_REQUIRE([gl_COMMON_BODY])
f2408973947f Fix __GNUC_STDC_INLINE__ predefine with Apple GCC on MacOS X 10.5.
Bruno Haible <bruno@clisp.org>
parents: 9411
diff changeset
15 ])
f2408973947f Fix __GNUC_STDC_INLINE__ predefine with Apple GCC on MacOS X 10.5.
Bruno Haible <bruno@clisp.org>
parents: 9411
diff changeset
16 AC_DEFUN([gl_COMMON_BODY], [
15391
af02f1770a6a * m4/gnulib-common.m4 (gl_COMMON_BODY): Add _Noreturn.
Paul Eggert <eggert@cs.ucla.edu>
parents: 14894
diff changeset
17 AH_VERBATIM([_Noreturn],
16239
91f53c1e1787 doc: C11 and C++11 are now official
Paul Eggert <eggert@cs.ucla.edu>
parents: 16201
diff changeset
18 [/* The _Noreturn keyword of C11. */
39961
4a9dba57ac9e gnulib-common.m4: port _Noreturn to C++
Paul Eggert <eggert@cs.ucla.edu>
parents: 39944
diff changeset
19 #ifndef _Noreturn
4a9dba57ac9e gnulib-common.m4: port _Noreturn to C++
Paul Eggert <eggert@cs.ucla.edu>
parents: 39944
diff changeset
20 # if 201103 <= (defined __cplusplus ? __cplusplus : 0)
4a9dba57ac9e gnulib-common.m4: port _Noreturn to C++
Paul Eggert <eggert@cs.ucla.edu>
parents: 39944
diff changeset
21 # define _Noreturn [[noreturn]]
4a9dba57ac9e gnulib-common.m4: port _Noreturn to C++
Paul Eggert <eggert@cs.ucla.edu>
parents: 39944
diff changeset
22 # elif (201112 <= (defined __STDC_VERSION__ ? __STDC_VERSION__ : 0) \
4a9dba57ac9e gnulib-common.m4: port _Noreturn to C++
Paul Eggert <eggert@cs.ucla.edu>
parents: 39944
diff changeset
23 || 4 < __GNUC__ + (7 <= __GNUC_MINOR__))
4a9dba57ac9e gnulib-common.m4: port _Noreturn to C++
Paul Eggert <eggert@cs.ucla.edu>
parents: 39944
diff changeset
24 /* _Noreturn works as-is. */
4a9dba57ac9e gnulib-common.m4: port _Noreturn to C++
Paul Eggert <eggert@cs.ucla.edu>
parents: 39944
diff changeset
25 # elif 2 < __GNUC__ + (8 <= __GNUC_MINOR__) || 0x5110 <= __SUNPRO_C
15391
af02f1770a6a * m4/gnulib-common.m4 (gl_COMMON_BODY): Add _Noreturn.
Paul Eggert <eggert@cs.ucla.edu>
parents: 14894
diff changeset
26 # define _Noreturn __attribute__ ((__noreturn__))
39961
4a9dba57ac9e gnulib-common.m4: port _Noreturn to C++
Paul Eggert <eggert@cs.ucla.edu>
parents: 39944
diff changeset
27 # elif 1200 <= (defined _MSC_VER ? _MSC_VER : 0)
15411
7b889c2a4a01 _Noreturn: Ignore __STDC_VERSION__; observe _MSC_VER.
Paul Eggert <eggert@cs.ucla.edu>
parents: 15391
diff changeset
28 # define _Noreturn __declspec (noreturn)
15391
af02f1770a6a * m4/gnulib-common.m4 (gl_COMMON_BODY): Add _Noreturn.
Paul Eggert <eggert@cs.ucla.edu>
parents: 14894
diff changeset
29 # else
af02f1770a6a * m4/gnulib-common.m4 (gl_COMMON_BODY): Add _Noreturn.
Paul Eggert <eggert@cs.ucla.edu>
parents: 14894
diff changeset
30 # define _Noreturn
af02f1770a6a * m4/gnulib-common.m4 (gl_COMMON_BODY): Add _Noreturn.
Paul Eggert <eggert@cs.ucla.edu>
parents: 14894
diff changeset
31 # endif
af02f1770a6a * m4/gnulib-common.m4 (gl_COMMON_BODY): Add _Noreturn.
Paul Eggert <eggert@cs.ucla.edu>
parents: 14894
diff changeset
32 #endif
af02f1770a6a * m4/gnulib-common.m4 (gl_COMMON_BODY): Add _Noreturn.
Paul Eggert <eggert@cs.ucla.edu>
parents: 14894
diff changeset
33 ])
9887
f2408973947f Fix __GNUC_STDC_INLINE__ predefine with Apple GCC on MacOS X 10.5.
Bruno Haible <bruno@clisp.org>
parents: 9411
diff changeset
34 AH_VERBATIM([isoc99_inline],
f2408973947f Fix __GNUC_STDC_INLINE__ predefine with Apple GCC on MacOS X 10.5.
Bruno Haible <bruno@clisp.org>
parents: 9411
diff changeset
35 [/* Work around a bug in Apple GCC 4.0.1 build 5465: In C99 mode, it supports
f2408973947f Fix __GNUC_STDC_INLINE__ predefine with Apple GCC on MacOS X 10.5.
Bruno Haible <bruno@clisp.org>
parents: 9411
diff changeset
36 the ISO C 99 semantics of 'extern inline' (unlike the GNU C semantics of
f2408973947f Fix __GNUC_STDC_INLINE__ predefine with Apple GCC on MacOS X 10.5.
Bruno Haible <bruno@clisp.org>
parents: 9411
diff changeset
37 earlier versions), but does not display it by setting __GNUC_STDC_INLINE__.
16935
498a2211d839 Write "Mac OS X" instead of "MacOS X".
Bruno Haible <bruno@clisp.org>
parents: 16845
diff changeset
38 __APPLE__ && __MACH__ test for Mac OS X.
9887
f2408973947f Fix __GNUC_STDC_INLINE__ predefine with Apple GCC on MacOS X 10.5.
Bruno Haible <bruno@clisp.org>
parents: 9411
diff changeset
39 __APPLE_CC__ tests for the Apple compiler and its version.
f2408973947f Fix __GNUC_STDC_INLINE__ predefine with Apple GCC on MacOS X 10.5.
Bruno Haible <bruno@clisp.org>
parents: 9411
diff changeset
40 __STDC_VERSION__ tests for the C99 mode. */
f2408973947f Fix __GNUC_STDC_INLINE__ predefine with Apple GCC on MacOS X 10.5.
Bruno Haible <bruno@clisp.org>
parents: 9411
diff changeset
41 #if defined __APPLE__ && defined __MACH__ && __APPLE_CC__ >= 5465 && !defined __cplusplus && __STDC_VERSION__ >= 199901L && !defined __GNUC_STDC_INLINE__
f2408973947f Fix __GNUC_STDC_INLINE__ predefine with Apple GCC on MacOS X 10.5.
Bruno Haible <bruno@clisp.org>
parents: 9411
diff changeset
42 # define __GNUC_STDC_INLINE__ 1
f2408973947f Fix __GNUC_STDC_INLINE__ predefine with Apple GCC on MacOS X 10.5.
Bruno Haible <bruno@clisp.org>
parents: 9411
diff changeset
43 #endif])
10658
a6a1df49f669 Avoid -Wunused-parameter warnings in public gnulib header files.
Bruno Haible <bruno@clisp.org>
parents: 10066
diff changeset
44 AH_VERBATIM([unused_parameter],
12482
11bc92a9e2bc gnulib-common: prefer _GL_UNUSED over _UNUSED_PARAMETER_
Eric Blake <ebb9@byu.net>
parents: 12421
diff changeset
45 [/* Define as a marker that can be attached to declarations that might not
11bc92a9e2bc gnulib-common: prefer _GL_UNUSED over _UNUSED_PARAMETER_
Eric Blake <ebb9@byu.net>
parents: 12421
diff changeset
46 be used. This helps to reduce warnings, such as from
11bc92a9e2bc gnulib-common: prefer _GL_UNUSED over _UNUSED_PARAMETER_
Eric Blake <ebb9@byu.net>
parents: 12421
diff changeset
47 GCC -Wunused-parameter. */
10658
a6a1df49f669 Avoid -Wunused-parameter warnings in public gnulib header files.
Bruno Haible <bruno@clisp.org>
parents: 10066
diff changeset
48 #if __GNUC__ >= 3 || (__GNUC__ == 2 && __GNUC_MINOR__ >= 7)
12482
11bc92a9e2bc gnulib-common: prefer _GL_UNUSED over _UNUSED_PARAMETER_
Eric Blake <ebb9@byu.net>
parents: 12421
diff changeset
49 # define _GL_UNUSED __attribute__ ((__unused__))
10658
a6a1df49f669 Avoid -Wunused-parameter warnings in public gnulib header files.
Bruno Haible <bruno@clisp.org>
parents: 10066
diff changeset
50 #else
12482
11bc92a9e2bc gnulib-common: prefer _GL_UNUSED over _UNUSED_PARAMETER_
Eric Blake <ebb9@byu.net>
parents: 12421
diff changeset
51 # define _GL_UNUSED
10658
a6a1df49f669 Avoid -Wunused-parameter warnings in public gnulib header files.
Bruno Haible <bruno@clisp.org>
parents: 10066
diff changeset
52 #endif
12482
11bc92a9e2bc gnulib-common: prefer _GL_UNUSED over _UNUSED_PARAMETER_
Eric Blake <ebb9@byu.net>
parents: 12421
diff changeset
53 /* The name _UNUSED_PARAMETER_ is an earlier spelling, although the name
11bc92a9e2bc gnulib-common: prefer _GL_UNUSED over _UNUSED_PARAMETER_
Eric Blake <ebb9@byu.net>
parents: 12421
diff changeset
54 is a misnomer outside of parameter lists. */
11bc92a9e2bc gnulib-common: prefer _GL_UNUSED over _UNUSED_PARAMETER_
Eric Blake <ebb9@byu.net>
parents: 12421
diff changeset
55 #define _UNUSED_PARAMETER_ _GL_UNUSED
14873
722fb7942bc8 gnulib-common.m4: add _GL_ATTRIBUTE_CONST and _GL_ATTRIBUTE_PURE
Jim Meyering <meyering@redhat.com>
parents: 14515
diff changeset
56
17689
0fc09785fa2f gnulib-common.m4: add _GL_UNUSED_LABEL
Pádraig Brady <P@draigBrady.com>
parents: 17615
diff changeset
57 /* gcc supports the "unused" attribute on possibly unused labels, and
17692
323b09d5b995 rename: mark a label as potentially unused
Ben Walton <bdwalton@gmail.com>
parents: 17691
diff changeset
58 g++ has since version 4.5. Note to support C++ as well as C,
323b09d5b995 rename: mark a label as potentially unused
Ben Walton <bdwalton@gmail.com>
parents: 17691
diff changeset
59 _GL_UNUSED_LABEL should be used with a trailing ; */
17689
0fc09785fa2f gnulib-common.m4: add _GL_UNUSED_LABEL
Pádraig Brady <P@draigBrady.com>
parents: 17615
diff changeset
60 #if !defined __cplusplus || __GNUC__ > 4 \
0fc09785fa2f gnulib-common.m4: add _GL_UNUSED_LABEL
Pádraig Brady <P@draigBrady.com>
parents: 17615
diff changeset
61 || (__GNUC__ == 4 && __GNUC_MINOR__ >= 5)
17691
7d9357b7b5c6 gnulib-common.m4: Fix typo in _GL_UNUSED_LABEL.
Paul Eggert <eggert@cs.ucla.edu>
parents: 17689
diff changeset
62 # define _GL_UNUSED_LABEL _GL_UNUSED
17689
0fc09785fa2f gnulib-common.m4: add _GL_UNUSED_LABEL
Pádraig Brady <P@draigBrady.com>
parents: 17615
diff changeset
63 #else
0fc09785fa2f gnulib-common.m4: add _GL_UNUSED_LABEL
Pádraig Brady <P@draigBrady.com>
parents: 17615
diff changeset
64 # define _GL_UNUSED_LABEL
0fc09785fa2f gnulib-common.m4: add _GL_UNUSED_LABEL
Pádraig Brady <P@draigBrady.com>
parents: 17615
diff changeset
65 #endif
0fc09785fa2f gnulib-common.m4: add _GL_UNUSED_LABEL
Pádraig Brady <P@draigBrady.com>
parents: 17615
diff changeset
66
14873
722fb7942bc8 gnulib-common.m4: add _GL_ATTRIBUTE_CONST and _GL_ATTRIBUTE_PURE
Jim Meyering <meyering@redhat.com>
parents: 14515
diff changeset
67 /* The __pure__ attribute was added in gcc 2.96. */
722fb7942bc8 gnulib-common.m4: add _GL_ATTRIBUTE_CONST and _GL_ATTRIBUTE_PURE
Jim Meyering <meyering@redhat.com>
parents: 14515
diff changeset
68 #if __GNUC__ > 2 || (__GNUC__ == 2 && __GNUC_MINOR__ >= 96)
722fb7942bc8 gnulib-common.m4: add _GL_ATTRIBUTE_CONST and _GL_ATTRIBUTE_PURE
Jim Meyering <meyering@redhat.com>
parents: 14515
diff changeset
69 # define _GL_ATTRIBUTE_PURE __attribute__ ((__pure__))
722fb7942bc8 gnulib-common.m4: add _GL_ATTRIBUTE_CONST and _GL_ATTRIBUTE_PURE
Jim Meyering <meyering@redhat.com>
parents: 14515
diff changeset
70 #else
722fb7942bc8 gnulib-common.m4: add _GL_ATTRIBUTE_CONST and _GL_ATTRIBUTE_PURE
Jim Meyering <meyering@redhat.com>
parents: 14515
diff changeset
71 # define _GL_ATTRIBUTE_PURE /* empty */
722fb7942bc8 gnulib-common.m4: add _GL_ATTRIBUTE_CONST and _GL_ATTRIBUTE_PURE
Jim Meyering <meyering@redhat.com>
parents: 14515
diff changeset
72 #endif
722fb7942bc8 gnulib-common.m4: add _GL_ATTRIBUTE_CONST and _GL_ATTRIBUTE_PURE
Jim Meyering <meyering@redhat.com>
parents: 14515
diff changeset
73
722fb7942bc8 gnulib-common.m4: add _GL_ATTRIBUTE_CONST and _GL_ATTRIBUTE_PURE
Jim Meyering <meyering@redhat.com>
parents: 14515
diff changeset
74 /* The __const__ attribute was added in gcc 2.95. */
722fb7942bc8 gnulib-common.m4: add _GL_ATTRIBUTE_CONST and _GL_ATTRIBUTE_PURE
Jim Meyering <meyering@redhat.com>
parents: 14515
diff changeset
75 #if __GNUC__ > 2 || (__GNUC__ == 2 && __GNUC_MINOR__ >= 95)
722fb7942bc8 gnulib-common.m4: add _GL_ATTRIBUTE_CONST and _GL_ATTRIBUTE_PURE
Jim Meyering <meyering@redhat.com>
parents: 14515
diff changeset
76 # define _GL_ATTRIBUTE_CONST __attribute__ ((__const__))
722fb7942bc8 gnulib-common.m4: add _GL_ATTRIBUTE_CONST and _GL_ATTRIBUTE_PURE
Jim Meyering <meyering@redhat.com>
parents: 14515
diff changeset
77 #else
722fb7942bc8 gnulib-common.m4: add _GL_ATTRIBUTE_CONST and _GL_ATTRIBUTE_PURE
Jim Meyering <meyering@redhat.com>
parents: 14515
diff changeset
78 # define _GL_ATTRIBUTE_CONST /* empty */
722fb7942bc8 gnulib-common.m4: add _GL_ATTRIBUTE_CONST and _GL_ATTRIBUTE_PURE
Jim Meyering <meyering@redhat.com>
parents: 14515
diff changeset
79 #endif
19596
0b05f2be9830 maint: port more modules to GCC 8
Paul Eggert <eggert@cs.ucla.edu>
parents: 19484
diff changeset
80
0b05f2be9830 maint: port more modules to GCC 8
Paul Eggert <eggert@cs.ucla.edu>
parents: 19484
diff changeset
81 /* The __malloc__ attribute was added in gcc 3. */
0b05f2be9830 maint: port more modules to GCC 8
Paul Eggert <eggert@cs.ucla.edu>
parents: 19484
diff changeset
82 #if 3 <= __GNUC__
0b05f2be9830 maint: port more modules to GCC 8
Paul Eggert <eggert@cs.ucla.edu>
parents: 19484
diff changeset
83 # define _GL_ATTRIBUTE_MALLOC __attribute__ ((__malloc__))
0b05f2be9830 maint: port more modules to GCC 8
Paul Eggert <eggert@cs.ucla.edu>
parents: 19484
diff changeset
84 #else
0b05f2be9830 maint: port more modules to GCC 8
Paul Eggert <eggert@cs.ucla.edu>
parents: 19484
diff changeset
85 # define _GL_ATTRIBUTE_MALLOC /* empty */
0b05f2be9830 maint: port more modules to GCC 8
Paul Eggert <eggert@cs.ucla.edu>
parents: 19484
diff changeset
86 #endif
10658
a6a1df49f669 Avoid -Wunused-parameter warnings in public gnulib header files.
Bruno Haible <bruno@clisp.org>
parents: 10066
diff changeset
87 ])
13274
d87472cc6eec gnulib-common.m4: make glibc write diagnostics to stderr, not /dev/tty
Jim Meyering <jim@meyering.net>
parents: 13204
diff changeset
88 dnl Preparation for running test programs:
d87472cc6eec gnulib-common.m4: make glibc write diagnostics to stderr, not /dev/tty
Jim Meyering <jim@meyering.net>
parents: 13204
diff changeset
89 dnl Tell glibc to write diagnostics from -D_FORTIFY_SOURCE=2 to stderr, not
d87472cc6eec gnulib-common.m4: make glibc write diagnostics to stderr, not /dev/tty
Jim Meyering <jim@meyering.net>
parents: 13204
diff changeset
90 dnl to /dev/tty, so they can be redirected to log files. Such diagnostics
d87472cc6eec gnulib-common.m4: make glibc write diagnostics to stderr, not /dev/tty
Jim Meyering <jim@meyering.net>
parents: 13204
diff changeset
91 dnl arise e.g., in the macros gl_PRINTF_DIRECTIVE_N, gl_SNPRINTF_DIRECTIVE_N.
d87472cc6eec gnulib-common.m4: make glibc write diagnostics to stderr, not /dev/tty
Jim Meyering <jim@meyering.net>
parents: 13204
diff changeset
92 LIBC_FATAL_STDERR_=1
d87472cc6eec gnulib-common.m4: make glibc write diagnostics to stderr, not /dev/tty
Jim Meyering <jim@meyering.net>
parents: 13204
diff changeset
93 export LIBC_FATAL_STDERR_
9887
f2408973947f Fix __GNUC_STDC_INLINE__ predefine with Apple GCC on MacOS X 10.5.
Bruno Haible <bruno@clisp.org>
parents: 9411
diff changeset
94 ])
f2408973947f Fix __GNUC_STDC_INLINE__ predefine with Apple GCC on MacOS X 10.5.
Bruno Haible <bruno@clisp.org>
parents: 9411
diff changeset
95
13067
0e829091f9c0 Avoid side effects from tests-related modules on the compilation of lib.
Bruno Haible <bruno@clisp.org>
parents: 13066
diff changeset
96 # gl_MODULE_INDICATOR_CONDITION
0e829091f9c0 Avoid side effects from tests-related modules on the compilation of lib.
Bruno Haible <bruno@clisp.org>
parents: 13066
diff changeset
97 # expands to a C preprocessor expression that evaluates to 1 or 0, depending
0e829091f9c0 Avoid side effects from tests-related modules on the compilation of lib.
Bruno Haible <bruno@clisp.org>
parents: 13066
diff changeset
98 # whether a gnulib module that has been requested shall be considered present
0e829091f9c0 Avoid side effects from tests-related modules on the compilation of lib.
Bruno Haible <bruno@clisp.org>
parents: 13066
diff changeset
99 # or not.
14894
b22360ddefc4 gnulib-tool: Better isolation between different gnulib-tool invocations.
Bruno Haible <bruno@clisp.org>
parents: 14873
diff changeset
100 m4_define([gl_MODULE_INDICATOR_CONDITION], [1])
13067
0e829091f9c0 Avoid side effects from tests-related modules on the compilation of lib.
Bruno Haible <bruno@clisp.org>
parents: 13066
diff changeset
101
13066
fc8c984b0733 Factorize common .m4 code.
Bruno Haible <bruno@clisp.org>
parents: 12880
diff changeset
102 # gl_MODULE_INDICATOR_SET_VARIABLE([modulename])
fc8c984b0733 Factorize common .m4 code.
Bruno Haible <bruno@clisp.org>
parents: 12880
diff changeset
103 # sets the shell variable that indicates the presence of the given module to
fc8c984b0733 Factorize common .m4 code.
Bruno Haible <bruno@clisp.org>
parents: 12880
diff changeset
104 # a C preprocessor expression that will evaluate to 1.
fc8c984b0733 Factorize common .m4 code.
Bruno Haible <bruno@clisp.org>
parents: 12880
diff changeset
105 AC_DEFUN([gl_MODULE_INDICATOR_SET_VARIABLE],
fc8c984b0733 Factorize common .m4 code.
Bruno Haible <bruno@clisp.org>
parents: 12880
diff changeset
106 [
14894
b22360ddefc4 gnulib-tool: Better isolation between different gnulib-tool invocations.
Bruno Haible <bruno@clisp.org>
parents: 14873
diff changeset
107 gl_MODULE_INDICATOR_SET_VARIABLE_AUX(
b22360ddefc4 gnulib-tool: Better isolation between different gnulib-tool invocations.
Bruno Haible <bruno@clisp.org>
parents: 14873
diff changeset
108 [GNULIB_[]m4_translit([[$1]],
b22360ddefc4 gnulib-tool: Better isolation between different gnulib-tool invocations.
Bruno Haible <bruno@clisp.org>
parents: 14873
diff changeset
109 [abcdefghijklmnopqrstuvwxyz./-],
b22360ddefc4 gnulib-tool: Better isolation between different gnulib-tool invocations.
Bruno Haible <bruno@clisp.org>
parents: 14873
diff changeset
110 [ABCDEFGHIJKLMNOPQRSTUVWXYZ___])],
b22360ddefc4 gnulib-tool: Better isolation between different gnulib-tool invocations.
Bruno Haible <bruno@clisp.org>
parents: 14873
diff changeset
111 [gl_MODULE_INDICATOR_CONDITION])
b22360ddefc4 gnulib-tool: Better isolation between different gnulib-tool invocations.
Bruno Haible <bruno@clisp.org>
parents: 14873
diff changeset
112 ])
b22360ddefc4 gnulib-tool: Better isolation between different gnulib-tool invocations.
Bruno Haible <bruno@clisp.org>
parents: 14873
diff changeset
113
b22360ddefc4 gnulib-tool: Better isolation between different gnulib-tool invocations.
Bruno Haible <bruno@clisp.org>
parents: 14873
diff changeset
114 # gl_MODULE_INDICATOR_SET_VARIABLE_AUX([variable])
b22360ddefc4 gnulib-tool: Better isolation between different gnulib-tool invocations.
Bruno Haible <bruno@clisp.org>
parents: 14873
diff changeset
115 # modifies the shell variable to include the gl_MODULE_INDICATOR_CONDITION.
b22360ddefc4 gnulib-tool: Better isolation between different gnulib-tool invocations.
Bruno Haible <bruno@clisp.org>
parents: 14873
diff changeset
116 # The shell variable's value is a C preprocessor expression that evaluates
b22360ddefc4 gnulib-tool: Better isolation between different gnulib-tool invocations.
Bruno Haible <bruno@clisp.org>
parents: 14873
diff changeset
117 # to 0 or 1.
b22360ddefc4 gnulib-tool: Better isolation between different gnulib-tool invocations.
Bruno Haible <bruno@clisp.org>
parents: 14873
diff changeset
118 AC_DEFUN([gl_MODULE_INDICATOR_SET_VARIABLE_AUX],
b22360ddefc4 gnulib-tool: Better isolation between different gnulib-tool invocations.
Bruno Haible <bruno@clisp.org>
parents: 14873
diff changeset
119 [
b22360ddefc4 gnulib-tool: Better isolation between different gnulib-tool invocations.
Bruno Haible <bruno@clisp.org>
parents: 14873
diff changeset
120 m4_if(m4_defn([gl_MODULE_INDICATOR_CONDITION]), [1],
b22360ddefc4 gnulib-tool: Better isolation between different gnulib-tool invocations.
Bruno Haible <bruno@clisp.org>
parents: 14873
diff changeset
121 [
b22360ddefc4 gnulib-tool: Better isolation between different gnulib-tool invocations.
Bruno Haible <bruno@clisp.org>
parents: 14873
diff changeset
122 dnl Simplify the expression VALUE || 1 to 1.
b22360ddefc4 gnulib-tool: Better isolation between different gnulib-tool invocations.
Bruno Haible <bruno@clisp.org>
parents: 14873
diff changeset
123 $1=1
b22360ddefc4 gnulib-tool: Better isolation between different gnulib-tool invocations.
Bruno Haible <bruno@clisp.org>
parents: 14873
diff changeset
124 ],
b22360ddefc4 gnulib-tool: Better isolation between different gnulib-tool invocations.
Bruno Haible <bruno@clisp.org>
parents: 14873
diff changeset
125 [gl_MODULE_INDICATOR_SET_VARIABLE_AUX_OR([$1],
b22360ddefc4 gnulib-tool: Better isolation between different gnulib-tool invocations.
Bruno Haible <bruno@clisp.org>
parents: 14873
diff changeset
126 [gl_MODULE_INDICATOR_CONDITION])])
b22360ddefc4 gnulib-tool: Better isolation between different gnulib-tool invocations.
Bruno Haible <bruno@clisp.org>
parents: 14873
diff changeset
127 ])
b22360ddefc4 gnulib-tool: Better isolation between different gnulib-tool invocations.
Bruno Haible <bruno@clisp.org>
parents: 14873
diff changeset
128
b22360ddefc4 gnulib-tool: Better isolation between different gnulib-tool invocations.
Bruno Haible <bruno@clisp.org>
parents: 14873
diff changeset
129 # gl_MODULE_INDICATOR_SET_VARIABLE_AUX_OR([variable], [condition])
b22360ddefc4 gnulib-tool: Better isolation between different gnulib-tool invocations.
Bruno Haible <bruno@clisp.org>
parents: 14873
diff changeset
130 # modifies the shell variable to include the given condition. The shell
b22360ddefc4 gnulib-tool: Better isolation between different gnulib-tool invocations.
Bruno Haible <bruno@clisp.org>
parents: 14873
diff changeset
131 # variable's value is a C preprocessor expression that evaluates to 0 or 1.
b22360ddefc4 gnulib-tool: Better isolation between different gnulib-tool invocations.
Bruno Haible <bruno@clisp.org>
parents: 14873
diff changeset
132 AC_DEFUN([gl_MODULE_INDICATOR_SET_VARIABLE_AUX_OR],
b22360ddefc4 gnulib-tool: Better isolation between different gnulib-tool invocations.
Bruno Haible <bruno@clisp.org>
parents: 14873
diff changeset
133 [
b22360ddefc4 gnulib-tool: Better isolation between different gnulib-tool invocations.
Bruno Haible <bruno@clisp.org>
parents: 14873
diff changeset
134 dnl Simplify the expression 1 || CONDITION to 1.
b22360ddefc4 gnulib-tool: Better isolation between different gnulib-tool invocations.
Bruno Haible <bruno@clisp.org>
parents: 14873
diff changeset
135 if test "$[]$1" != 1; then
b22360ddefc4 gnulib-tool: Better isolation between different gnulib-tool invocations.
Bruno Haible <bruno@clisp.org>
parents: 14873
diff changeset
136 dnl Simplify the expression 0 || CONDITION to CONDITION.
b22360ddefc4 gnulib-tool: Better isolation between different gnulib-tool invocations.
Bruno Haible <bruno@clisp.org>
parents: 14873
diff changeset
137 if test "$[]$1" = 0; then
b22360ddefc4 gnulib-tool: Better isolation between different gnulib-tool invocations.
Bruno Haible <bruno@clisp.org>
parents: 14873
diff changeset
138 $1=$2
b22360ddefc4 gnulib-tool: Better isolation between different gnulib-tool invocations.
Bruno Haible <bruno@clisp.org>
parents: 14873
diff changeset
139 else
b22360ddefc4 gnulib-tool: Better isolation between different gnulib-tool invocations.
Bruno Haible <bruno@clisp.org>
parents: 14873
diff changeset
140 $1="($[]$1 || $2)"
b22360ddefc4 gnulib-tool: Better isolation between different gnulib-tool invocations.
Bruno Haible <bruno@clisp.org>
parents: 14873
diff changeset
141 fi
b22360ddefc4 gnulib-tool: Better isolation between different gnulib-tool invocations.
Bruno Haible <bruno@clisp.org>
parents: 14873
diff changeset
142 fi
13066
fc8c984b0733 Factorize common .m4 code.
Bruno Haible <bruno@clisp.org>
parents: 12880
diff changeset
143 ])
fc8c984b0733 Factorize common .m4 code.
Bruno Haible <bruno@clisp.org>
parents: 12880
diff changeset
144
7788
e3424061171f Back from an automatic module-indicator macro to a module-indicator macro
Bruno Haible <bruno@clisp.org>
parents:
diff changeset
145 # gl_MODULE_INDICATOR([modulename])
13071
b2385e7b332e Distinguish two kinds of module indicators.
Bruno Haible <bruno@clisp.org>
parents: 13067
diff changeset
146 # defines a C macro indicating the presence of the given module
b2385e7b332e Distinguish two kinds of module indicators.
Bruno Haible <bruno@clisp.org>
parents: 13067
diff changeset
147 # in a location where it can be used.
b2385e7b332e Distinguish two kinds of module indicators.
Bruno Haible <bruno@clisp.org>
parents: 13067
diff changeset
148 # | Value | Value |
b2385e7b332e Distinguish two kinds of module indicators.
Bruno Haible <bruno@clisp.org>
parents: 13067
diff changeset
149 # | in lib/ | in tests/ |
b2385e7b332e Distinguish two kinds of module indicators.
Bruno Haible <bruno@clisp.org>
parents: 13067
diff changeset
150 # --------------------------------------------+---------+-----------+
b2385e7b332e Distinguish two kinds of module indicators.
Bruno Haible <bruno@clisp.org>
parents: 13067
diff changeset
151 # Module present among main modules: | 1 | 1 |
b2385e7b332e Distinguish two kinds of module indicators.
Bruno Haible <bruno@clisp.org>
parents: 13067
diff changeset
152 # --------------------------------------------+---------+-----------+
b2385e7b332e Distinguish two kinds of module indicators.
Bruno Haible <bruno@clisp.org>
parents: 13067
diff changeset
153 # Module present among tests-related modules: | 0 | 1 |
b2385e7b332e Distinguish two kinds of module indicators.
Bruno Haible <bruno@clisp.org>
parents: 13067
diff changeset
154 # --------------------------------------------+---------+-----------+
b2385e7b332e Distinguish two kinds of module indicators.
Bruno Haible <bruno@clisp.org>
parents: 13067
diff changeset
155 # Module not present at all: | 0 | 0 |
b2385e7b332e Distinguish two kinds of module indicators.
Bruno Haible <bruno@clisp.org>
parents: 13067
diff changeset
156 # --------------------------------------------+---------+-----------+
7788
e3424061171f Back from an automatic module-indicator macro to a module-indicator macro
Bruno Haible <bruno@clisp.org>
parents:
diff changeset
157 AC_DEFUN([gl_MODULE_INDICATOR],
e3424061171f Back from an automatic module-indicator macro to a module-indicator macro
Bruno Haible <bruno@clisp.org>
parents:
diff changeset
158 [
13096
3e1ae5eb7f94 maint: improve module indicators
Eric Blake <eblake@redhat.com>
parents: 13073
diff changeset
159 AC_DEFINE_UNQUOTED([GNULIB_]m4_translit([[$1]],
3e1ae5eb7f94 maint: improve module indicators
Eric Blake <eblake@redhat.com>
parents: 13073
diff changeset
160 [abcdefghijklmnopqrstuvwxyz./-],
3e1ae5eb7f94 maint: improve module indicators
Eric Blake <eblake@redhat.com>
parents: 13073
diff changeset
161 [ABCDEFGHIJKLMNOPQRSTUVWXYZ___]),
13071
b2385e7b332e Distinguish two kinds of module indicators.
Bruno Haible <bruno@clisp.org>
parents: 13067
diff changeset
162 [gl_MODULE_INDICATOR_CONDITION],
13096
3e1ae5eb7f94 maint: improve module indicators
Eric Blake <eblake@redhat.com>
parents: 13073
diff changeset
163 [Define to a C preprocessor expression that evaluates to 1 or 0,
3e1ae5eb7f94 maint: improve module indicators
Eric Blake <eblake@redhat.com>
parents: 13073
diff changeset
164 depending whether the gnulib module $1 shall be considered present.])
13071
b2385e7b332e Distinguish two kinds of module indicators.
Bruno Haible <bruno@clisp.org>
parents: 13067
diff changeset
165 ])
b2385e7b332e Distinguish two kinds of module indicators.
Bruno Haible <bruno@clisp.org>
parents: 13067
diff changeset
166
b2385e7b332e Distinguish two kinds of module indicators.
Bruno Haible <bruno@clisp.org>
parents: 13067
diff changeset
167 # gl_MODULE_INDICATOR_FOR_TESTS([modulename])
b2385e7b332e Distinguish two kinds of module indicators.
Bruno Haible <bruno@clisp.org>
parents: 13067
diff changeset
168 # defines a C macro indicating the presence of the given module
b2385e7b332e Distinguish two kinds of module indicators.
Bruno Haible <bruno@clisp.org>
parents: 13067
diff changeset
169 # in lib or tests. This is useful to determine whether the module
b2385e7b332e Distinguish two kinds of module indicators.
Bruno Haible <bruno@clisp.org>
parents: 13067
diff changeset
170 # should be tested.
b2385e7b332e Distinguish two kinds of module indicators.
Bruno Haible <bruno@clisp.org>
parents: 13067
diff changeset
171 # | Value | Value |
b2385e7b332e Distinguish two kinds of module indicators.
Bruno Haible <bruno@clisp.org>
parents: 13067
diff changeset
172 # | in lib/ | in tests/ |
b2385e7b332e Distinguish two kinds of module indicators.
Bruno Haible <bruno@clisp.org>
parents: 13067
diff changeset
173 # --------------------------------------------+---------+-----------+
b2385e7b332e Distinguish two kinds of module indicators.
Bruno Haible <bruno@clisp.org>
parents: 13067
diff changeset
174 # Module present among main modules: | 1 | 1 |
b2385e7b332e Distinguish two kinds of module indicators.
Bruno Haible <bruno@clisp.org>
parents: 13067
diff changeset
175 # --------------------------------------------+---------+-----------+
b2385e7b332e Distinguish two kinds of module indicators.
Bruno Haible <bruno@clisp.org>
parents: 13067
diff changeset
176 # Module present among tests-related modules: | 1 | 1 |
b2385e7b332e Distinguish two kinds of module indicators.
Bruno Haible <bruno@clisp.org>
parents: 13067
diff changeset
177 # --------------------------------------------+---------+-----------+
b2385e7b332e Distinguish two kinds of module indicators.
Bruno Haible <bruno@clisp.org>
parents: 13067
diff changeset
178 # Module not present at all: | 0 | 0 |
b2385e7b332e Distinguish two kinds of module indicators.
Bruno Haible <bruno@clisp.org>
parents: 13067
diff changeset
179 # --------------------------------------------+---------+-----------+
b2385e7b332e Distinguish two kinds of module indicators.
Bruno Haible <bruno@clisp.org>
parents: 13067
diff changeset
180 AC_DEFUN([gl_MODULE_INDICATOR_FOR_TESTS],
b2385e7b332e Distinguish two kinds of module indicators.
Bruno Haible <bruno@clisp.org>
parents: 13067
diff changeset
181 [
13096
3e1ae5eb7f94 maint: improve module indicators
Eric Blake <eblake@redhat.com>
parents: 13073
diff changeset
182 AC_DEFINE([GNULIB_TEST_]m4_translit([[$1]],
3e1ae5eb7f94 maint: improve module indicators
Eric Blake <eblake@redhat.com>
parents: 13073
diff changeset
183 [abcdefghijklmnopqrstuvwxyz./-],
3e1ae5eb7f94 maint: improve module indicators
Eric Blake <eblake@redhat.com>
parents: 13073
diff changeset
184 [ABCDEFGHIJKLMNOPQRSTUVWXYZ___]), [1],
3e1ae5eb7f94 maint: improve module indicators
Eric Blake <eblake@redhat.com>
parents: 13073
diff changeset
185 [Define to 1 when the gnulib module $1 should be tested.])
7788
e3424061171f Back from an automatic module-indicator macro to a module-indicator macro
Bruno Haible <bruno@clisp.org>
parents:
diff changeset
186 ])
7920
53d558c7086d Add an AC_PROG_MKDIR_P backport.
Bruno Haible <bruno@clisp.org>
parents: 7788
diff changeset
187
14221
b2abfb114786 Allow the user to avoid the GNULIB_TEST_* macros.
Paul Eggert <eggert@cs.ucla.edu>
parents: 14188
diff changeset
188 # gl_ASSERT_NO_GNULIB_POSIXCHECK
b2abfb114786 Allow the user to avoid the GNULIB_TEST_* macros.
Paul Eggert <eggert@cs.ucla.edu>
parents: 14188
diff changeset
189 # asserts that there will never be a need to #define GNULIB_POSIXCHECK.
b2abfb114786 Allow the user to avoid the GNULIB_TEST_* macros.
Paul Eggert <eggert@cs.ucla.edu>
parents: 14188
diff changeset
190 # and thereby enables an optimization of configure and config.h.
b2abfb114786 Allow the user to avoid the GNULIB_TEST_* macros.
Paul Eggert <eggert@cs.ucla.edu>
parents: 14188
diff changeset
191 # Used by Emacs.
b2abfb114786 Allow the user to avoid the GNULIB_TEST_* macros.
Paul Eggert <eggert@cs.ucla.edu>
parents: 14188
diff changeset
192 AC_DEFUN([gl_ASSERT_NO_GNULIB_POSIXCHECK],
b2abfb114786 Allow the user to avoid the GNULIB_TEST_* macros.
Paul Eggert <eggert@cs.ucla.edu>
parents: 14188
diff changeset
193 [
b2abfb114786 Allow the user to avoid the GNULIB_TEST_* macros.
Paul Eggert <eggert@cs.ucla.edu>
parents: 14188
diff changeset
194 dnl Override gl_WARN_ON_USE_PREPARE.
14515
b2069b8212d0 Fix bug with gl_WARN_ON_USE_PREPARE, introduced on 2011-01-23.
Bruno Haible <bruno@clisp.org>
parents: 14221
diff changeset
195 dnl But hide this definition from 'aclocal'.
b2069b8212d0 Fix bug with gl_WARN_ON_USE_PREPARE, introduced on 2011-01-23.
Bruno Haible <bruno@clisp.org>
parents: 14221
diff changeset
196 AC_DEFUN([gl_W][ARN_ON_USE_PREPARE], [])
14221
b2abfb114786 Allow the user to avoid the GNULIB_TEST_* macros.
Paul Eggert <eggert@cs.ucla.edu>
parents: 14188
diff changeset
197 ])
b2abfb114786 Allow the user to avoid the GNULIB_TEST_* macros.
Paul Eggert <eggert@cs.ucla.edu>
parents: 14188
diff changeset
198
14188
87bb0468d75c Allow the user to avoid the GNULIB_TEST_* macros.
Bruno Haible <bruno@clisp.org>
parents: 14079
diff changeset
199 # gl_ASSERT_NO_GNULIB_TESTS
87bb0468d75c Allow the user to avoid the GNULIB_TEST_* macros.
Bruno Haible <bruno@clisp.org>
parents: 14079
diff changeset
200 # asserts that there will be no gnulib tests in the scope of the configure.ac
87bb0468d75c Allow the user to avoid the GNULIB_TEST_* macros.
Bruno Haible <bruno@clisp.org>
parents: 14079
diff changeset
201 # and thereby enables an optimization of config.h.
87bb0468d75c Allow the user to avoid the GNULIB_TEST_* macros.
Bruno Haible <bruno@clisp.org>
parents: 14079
diff changeset
202 # Used by Emacs.
87bb0468d75c Allow the user to avoid the GNULIB_TEST_* macros.
Bruno Haible <bruno@clisp.org>
parents: 14079
diff changeset
203 AC_DEFUN([gl_ASSERT_NO_GNULIB_TESTS],
87bb0468d75c Allow the user to avoid the GNULIB_TEST_* macros.
Bruno Haible <bruno@clisp.org>
parents: 14079
diff changeset
204 [
87bb0468d75c Allow the user to avoid the GNULIB_TEST_* macros.
Bruno Haible <bruno@clisp.org>
parents: 14079
diff changeset
205 dnl Override gl_MODULE_INDICATOR_FOR_TESTS.
87bb0468d75c Allow the user to avoid the GNULIB_TEST_* macros.
Bruno Haible <bruno@clisp.org>
parents: 14079
diff changeset
206 AC_DEFUN([gl_MODULE_INDICATOR_FOR_TESTS], [])
87bb0468d75c Allow the user to avoid the GNULIB_TEST_* macros.
Bruno Haible <bruno@clisp.org>
parents: 14079
diff changeset
207 ])
87bb0468d75c Allow the user to avoid the GNULIB_TEST_* macros.
Bruno Haible <bruno@clisp.org>
parents: 14079
diff changeset
208
13887
ff73aa93842c Ensure that <features.h> is included before __GLIBC__ is tested.
Bruno Haible <bruno@clisp.org>
parents: 13274
diff changeset
209 # Test whether <features.h> exists.
ff73aa93842c Ensure that <features.h> is included before __GLIBC__ is tested.
Bruno Haible <bruno@clisp.org>
parents: 13274
diff changeset
210 # Set HAVE_FEATURES_H.
ff73aa93842c Ensure that <features.h> is included before __GLIBC__ is tested.
Bruno Haible <bruno@clisp.org>
parents: 13274
diff changeset
211 AC_DEFUN([gl_FEATURES_H],
ff73aa93842c Ensure that <features.h> is included before __GLIBC__ is tested.
Bruno Haible <bruno@clisp.org>
parents: 13274
diff changeset
212 [
ff73aa93842c Ensure that <features.h> is included before __GLIBC__ is tested.
Bruno Haible <bruno@clisp.org>
parents: 13274
diff changeset
213 AC_CHECK_HEADERS_ONCE([features.h])
ff73aa93842c Ensure that <features.h> is included before __GLIBC__ is tested.
Bruno Haible <bruno@clisp.org>
parents: 13274
diff changeset
214 if test $ac_cv_header_features_h = yes; then
ff73aa93842c Ensure that <features.h> is included before __GLIBC__ is tested.
Bruno Haible <bruno@clisp.org>
parents: 13274
diff changeset
215 HAVE_FEATURES_H=1
ff73aa93842c Ensure that <features.h> is included before __GLIBC__ is tested.
Bruno Haible <bruno@clisp.org>
parents: 13274
diff changeset
216 else
ff73aa93842c Ensure that <features.h> is included before __GLIBC__ is tested.
Bruno Haible <bruno@clisp.org>
parents: 13274
diff changeset
217 HAVE_FEATURES_H=0
ff73aa93842c Ensure that <features.h> is included before __GLIBC__ is tested.
Bruno Haible <bruno@clisp.org>
parents: 13274
diff changeset
218 fi
ff73aa93842c Ensure that <features.h> is included before __GLIBC__ is tested.
Bruno Haible <bruno@clisp.org>
parents: 13274
diff changeset
219 AC_SUBST([HAVE_FEATURES_H])
ff73aa93842c Ensure that <features.h> is included before __GLIBC__ is tested.
Bruno Haible <bruno@clisp.org>
parents: 13274
diff changeset
220 ])
ff73aa93842c Ensure that <features.h> is included before __GLIBC__ is tested.
Bruno Haible <bruno@clisp.org>
parents: 13274
diff changeset
221
12735
77cea116e541 build: guarantee AS_VAR_IF
Simon Josefsson <simon@josefsson.org>
parents: 12559
diff changeset
222 # AS_VAR_IF(VAR, VALUE, [IF-MATCH], [IF-NOT-MATCH])
77cea116e541 build: guarantee AS_VAR_IF
Simon Josefsson <simon@josefsson.org>
parents: 12559
diff changeset
223 # ----------------------------------------------------
77cea116e541 build: guarantee AS_VAR_IF
Simon Josefsson <simon@josefsson.org>
parents: 12559
diff changeset
224 # Backport of autoconf-2.63b's macro.
77cea116e541 build: guarantee AS_VAR_IF
Simon Josefsson <simon@josefsson.org>
parents: 12559
diff changeset
225 # Remove this macro when we can assume autoconf >= 2.64.
77cea116e541 build: guarantee AS_VAR_IF
Simon Josefsson <simon@josefsson.org>
parents: 12559
diff changeset
226 m4_ifndef([AS_VAR_IF],
77cea116e541 build: guarantee AS_VAR_IF
Simon Josefsson <simon@josefsson.org>
parents: 12559
diff changeset
227 [m4_define([AS_VAR_IF],
77cea116e541 build: guarantee AS_VAR_IF
Simon Josefsson <simon@josefsson.org>
parents: 12559
diff changeset
228 [AS_IF([test x"AS_VAR_GET([$1])" = x""$2], [$3], [$4])])])
77cea116e541 build: guarantee AS_VAR_IF
Simon Josefsson <simon@josefsson.org>
parents: 12559
diff changeset
229
15800
d79b27b411b7 Centralize C99 requirement.
Bruno Haible <bruno@clisp.org>
parents: 15562
diff changeset
230 # gl_PROG_CC_C99
d79b27b411b7 Centralize C99 requirement.
Bruno Haible <bruno@clisp.org>
parents: 15562
diff changeset
231 # Modifies the value of the shell variable CC in an attempt to make $CC
d79b27b411b7 Centralize C99 requirement.
Bruno Haible <bruno@clisp.org>
parents: 15562
diff changeset
232 # understand ISO C99 source code.
d79b27b411b7 Centralize C99 requirement.
Bruno Haible <bruno@clisp.org>
parents: 15562
diff changeset
233 # This is like AC_PROG_CC_C99, except that
d79b27b411b7 Centralize C99 requirement.
Bruno Haible <bruno@clisp.org>
parents: 15562
diff changeset
234 # - AC_PROG_CC_C99 does not mix well with AC_PROG_CC_STDC
19439
8bfc20b57265 maint: shorten https://lists.gnu.org/archive/html/... links
Jim Meyering <meyering@fb.com>
parents: 19192
diff changeset
235 # <https://lists.gnu.org/r/bug-gnulib/2011-09/msg00367.html>,
15800
d79b27b411b7 Centralize C99 requirement.
Bruno Haible <bruno@clisp.org>
parents: 15562
diff changeset
236 # but many more packages use AC_PROG_CC_STDC than AC_PROG_CC_C99
19439
8bfc20b57265 maint: shorten https://lists.gnu.org/archive/html/... links
Jim Meyering <meyering@fb.com>
parents: 19192
diff changeset
237 # <https://lists.gnu.org/r/bug-gnulib/2011-09/msg00441.html>.
15800
d79b27b411b7 Centralize C99 requirement.
Bruno Haible <bruno@clisp.org>
parents: 15562
diff changeset
238 # Remaining problems:
d79b27b411b7 Centralize C99 requirement.
Bruno Haible <bruno@clisp.org>
parents: 15562
diff changeset
239 # - When AC_PROG_CC_STDC is invoked twice, it adds the C99 enabling options
d79b27b411b7 Centralize C99 requirement.
Bruno Haible <bruno@clisp.org>
parents: 15562
diff changeset
240 # to CC twice
19439
8bfc20b57265 maint: shorten https://lists.gnu.org/archive/html/... links
Jim Meyering <meyering@fb.com>
parents: 19192
diff changeset
241 # <https://lists.gnu.org/r/bug-gnulib/2011-09/msg00431.html>.
16239
91f53c1e1787 doc: C11 and C++11 are now official
Paul Eggert <eggert@cs.ucla.edu>
parents: 16201
diff changeset
242 # - AC_PROG_CC_STDC is likely to change now that C11 is an ISO standard.
15800
d79b27b411b7 Centralize C99 requirement.
Bruno Haible <bruno@clisp.org>
parents: 15562
diff changeset
243 AC_DEFUN([gl_PROG_CC_C99],
d79b27b411b7 Centralize C99 requirement.
Bruno Haible <bruno@clisp.org>
parents: 15562
diff changeset
244 [
d79b27b411b7 Centralize C99 requirement.
Bruno Haible <bruno@clisp.org>
parents: 15562
diff changeset
245 dnl Change that version number to the minimum Autoconf version that supports
d79b27b411b7 Centralize C99 requirement.
Bruno Haible <bruno@clisp.org>
parents: 15562
diff changeset
246 dnl mixing AC_PROG_CC_C99 calls with AC_PROG_CC_STDC calls.
d79b27b411b7 Centralize C99 requirement.
Bruno Haible <bruno@clisp.org>
parents: 15562
diff changeset
247 m4_version_prereq([9.0],
d79b27b411b7 Centralize C99 requirement.
Bruno Haible <bruno@clisp.org>
parents: 15562
diff changeset
248 [AC_REQUIRE([AC_PROG_CC_C99])],
d79b27b411b7 Centralize C99 requirement.
Bruno Haible <bruno@clisp.org>
parents: 15562
diff changeset
249 [AC_REQUIRE([AC_PROG_CC_STDC])])
d79b27b411b7 Centralize C99 requirement.
Bruno Haible <bruno@clisp.org>
parents: 15562
diff changeset
250 ])
d79b27b411b7 Centralize C99 requirement.
Bruno Haible <bruno@clisp.org>
parents: 15562
diff changeset
251
15482
74bf515b04ad Add support for Minix with ACK compiler.
Bruno Haible <bruno@clisp.org>
parents: 15411
diff changeset
252 # gl_PROG_AR_RANLIB
74bf515b04ad Add support for Minix with ACK compiler.
Bruno Haible <bruno@clisp.org>
parents: 15411
diff changeset
253 # Determines the values for AR, ARFLAGS, RANLIB that fit with the compiler.
15562
c73d0845f357 Allow the user to override the choice of AR, ARFLAGS, RANLIB.
Bruno Haible <bruno@clisp.org>
parents: 15561
diff changeset
254 # The user can set the variables AR, ARFLAGS, RANLIB if he wants to override
c73d0845f357 Allow the user to override the choice of AR, ARFLAGS, RANLIB.
Bruno Haible <bruno@clisp.org>
parents: 15561
diff changeset
255 # the values.
15482
74bf515b04ad Add support for Minix with ACK compiler.
Bruno Haible <bruno@clisp.org>
parents: 15411
diff changeset
256 AC_DEFUN([gl_PROG_AR_RANLIB],
74bf515b04ad Add support for Minix with ACK compiler.
Bruno Haible <bruno@clisp.org>
parents: 15411
diff changeset
257 [
74bf515b04ad Add support for Minix with ACK compiler.
Bruno Haible <bruno@clisp.org>
parents: 15411
diff changeset
258 dnl Minix 3 comes with two toolchains: The Amsterdam Compiler Kit compiler
74bf515b04ad Add support for Minix with ACK compiler.
Bruno Haible <bruno@clisp.org>
parents: 15411
diff changeset
259 dnl as "cc", and GCC as "gcc". They have different object file formats and
18114
e212f9b1ce05 gnulib-common.m4: fix gl_PROG_AR_RANLIB/AM_PROG_AR clash
Pavel Raiskup <praiskup@redhat.com>
parents: 18039
diff changeset
260 dnl library formats. In particular, the GNU binutils programs ar and ranlib
15482
74bf515b04ad Add support for Minix with ACK compiler.
Bruno Haible <bruno@clisp.org>
parents: 15411
diff changeset
261 dnl produce libraries that work only with gcc, not with cc.
74bf515b04ad Add support for Minix with ACK compiler.
Bruno Haible <bruno@clisp.org>
parents: 15411
diff changeset
262 AC_REQUIRE([AC_PROG_CC])
18728
bee1d83d3af5 gnulib-common.m4: avoid aclocal.m4 bloat
Paul Eggert <eggert@cs.ucla.edu>
parents: 18710
diff changeset
263 dnl The '][' hides this use from 'aclocal'.
bee1d83d3af5 gnulib-common.m4: avoid aclocal.m4 bloat
Paul Eggert <eggert@cs.ucla.edu>
parents: 18710
diff changeset
264 AC_BEFORE([$0], [A][M_PROG_AR])
15562
c73d0845f357 Allow the user to override the choice of AR, ARFLAGS, RANLIB.
Bruno Haible <bruno@clisp.org>
parents: 15561
diff changeset
265 AC_CACHE_CHECK([for Minix Amsterdam compiler], [gl_cv_c_amsterdam_compiler],
15482
74bf515b04ad Add support for Minix with ACK compiler.
Bruno Haible <bruno@clisp.org>
parents: 15411
diff changeset
266 [
15562
c73d0845f357 Allow the user to override the choice of AR, ARFLAGS, RANLIB.
Bruno Haible <bruno@clisp.org>
parents: 15561
diff changeset
267 AC_EGREP_CPP([Amsterdam],
c73d0845f357 Allow the user to override the choice of AR, ARFLAGS, RANLIB.
Bruno Haible <bruno@clisp.org>
parents: 15561
diff changeset
268 [
15482
74bf515b04ad Add support for Minix with ACK compiler.
Bruno Haible <bruno@clisp.org>
parents: 15411
diff changeset
269 #ifdef __ACK__
74bf515b04ad Add support for Minix with ACK compiler.
Bruno Haible <bruno@clisp.org>
parents: 15411
diff changeset
270 Amsterdam
74bf515b04ad Add support for Minix with ACK compiler.
Bruno Haible <bruno@clisp.org>
parents: 15411
diff changeset
271 #endif
15562
c73d0845f357 Allow the user to override the choice of AR, ARFLAGS, RANLIB.
Bruno Haible <bruno@clisp.org>
parents: 15561
diff changeset
272 ],
c73d0845f357 Allow the user to override the choice of AR, ARFLAGS, RANLIB.
Bruno Haible <bruno@clisp.org>
parents: 15561
diff changeset
273 [gl_cv_c_amsterdam_compiler=yes],
c73d0845f357 Allow the user to override the choice of AR, ARFLAGS, RANLIB.
Bruno Haible <bruno@clisp.org>
parents: 15561
diff changeset
274 [gl_cv_c_amsterdam_compiler=no])
15482
74bf515b04ad Add support for Minix with ACK compiler.
Bruno Haible <bruno@clisp.org>
parents: 15411
diff changeset
275 ])
18114
e212f9b1ce05 gnulib-common.m4: fix gl_PROG_AR_RANLIB/AM_PROG_AR clash
Pavel Raiskup <praiskup@redhat.com>
parents: 18039
diff changeset
276
e212f9b1ce05 gnulib-common.m4: fix gl_PROG_AR_RANLIB/AM_PROG_AR clash
Pavel Raiskup <praiskup@redhat.com>
parents: 18039
diff changeset
277 dnl Don't compete with AM_PROG_AR's decision about AR/ARFLAGS if we are not
e212f9b1ce05 gnulib-common.m4: fix gl_PROG_AR_RANLIB/AM_PROG_AR clash
Pavel Raiskup <praiskup@redhat.com>
parents: 18039
diff changeset
278 dnl building with __ACK__.
e212f9b1ce05 gnulib-common.m4: fix gl_PROG_AR_RANLIB/AM_PROG_AR clash
Pavel Raiskup <praiskup@redhat.com>
parents: 18039
diff changeset
279 if test $gl_cv_c_amsterdam_compiler = yes; then
e212f9b1ce05 gnulib-common.m4: fix gl_PROG_AR_RANLIB/AM_PROG_AR clash
Pavel Raiskup <praiskup@redhat.com>
parents: 18039
diff changeset
280 if test -z "$AR"; then
15562
c73d0845f357 Allow the user to override the choice of AR, ARFLAGS, RANLIB.
Bruno Haible <bruno@clisp.org>
parents: 15561
diff changeset
281 AR='cc -c.a'
18114
e212f9b1ce05 gnulib-common.m4: fix gl_PROG_AR_RANLIB/AM_PROG_AR clash
Pavel Raiskup <praiskup@redhat.com>
parents: 18039
diff changeset
282 fi
e212f9b1ce05 gnulib-common.m4: fix gl_PROG_AR_RANLIB/AM_PROG_AR clash
Pavel Raiskup <praiskup@redhat.com>
parents: 18039
diff changeset
283 if test -z "$ARFLAGS"; then
e212f9b1ce05 gnulib-common.m4: fix gl_PROG_AR_RANLIB/AM_PROG_AR clash
Pavel Raiskup <praiskup@redhat.com>
parents: 18039
diff changeset
284 ARFLAGS='-o'
15562
c73d0845f357 Allow the user to override the choice of AR, ARFLAGS, RANLIB.
Bruno Haible <bruno@clisp.org>
parents: 15561
diff changeset
285 fi
c73d0845f357 Allow the user to override the choice of AR, ARFLAGS, RANLIB.
Bruno Haible <bruno@clisp.org>
parents: 15561
diff changeset
286 else
18114
e212f9b1ce05 gnulib-common.m4: fix gl_PROG_AR_RANLIB/AM_PROG_AR clash
Pavel Raiskup <praiskup@redhat.com>
parents: 18039
diff changeset
287 dnl AM_PROG_AR was added in automake v1.11.2. AM_PROG_AR does not AC_SUBST
e212f9b1ce05 gnulib-common.m4: fix gl_PROG_AR_RANLIB/AM_PROG_AR clash
Pavel Raiskup <praiskup@redhat.com>
parents: 18039
diff changeset
288 dnl ARFLAGS variable (it is filed into Makefile.in directly by automake
e212f9b1ce05 gnulib-common.m4: fix gl_PROG_AR_RANLIB/AM_PROG_AR clash
Pavel Raiskup <praiskup@redhat.com>
parents: 18039
diff changeset
289 dnl script on-demand, if not specified by ./configure of course).
e212f9b1ce05 gnulib-common.m4: fix gl_PROG_AR_RANLIB/AM_PROG_AR clash
Pavel Raiskup <praiskup@redhat.com>
parents: 18039
diff changeset
290 dnl Don't AC_REQUIRE the AM_PROG_AR otherwise the code for __ACK__ above
e212f9b1ce05 gnulib-common.m4: fix gl_PROG_AR_RANLIB/AM_PROG_AR clash
Pavel Raiskup <praiskup@redhat.com>
parents: 18039
diff changeset
291 dnl will be ignored. Also, pay attention to call AM_PROG_AR in else block
e212f9b1ce05 gnulib-common.m4: fix gl_PROG_AR_RANLIB/AM_PROG_AR clash
Pavel Raiskup <praiskup@redhat.com>
parents: 18039
diff changeset
292 dnl because AM_PROG_AR is written so it could re-set AR variable even for
e212f9b1ce05 gnulib-common.m4: fix gl_PROG_AR_RANLIB/AM_PROG_AR clash
Pavel Raiskup <praiskup@redhat.com>
parents: 18039
diff changeset
293 dnl __ACK__. It may seem like its easier to avoid calling the macro here,
e212f9b1ce05 gnulib-common.m4: fix gl_PROG_AR_RANLIB/AM_PROG_AR clash
Pavel Raiskup <praiskup@redhat.com>
parents: 18039
diff changeset
294 dnl but we need to AC_SUBST both AR/ARFLAGS (thus those must have some good
e212f9b1ce05 gnulib-common.m4: fix gl_PROG_AR_RANLIB/AM_PROG_AR clash
Pavel Raiskup <praiskup@redhat.com>
parents: 18039
diff changeset
295 dnl default value and automake should usually know them).
18728
bee1d83d3af5 gnulib-common.m4: avoid aclocal.m4 bloat
Paul Eggert <eggert@cs.ucla.edu>
parents: 18710
diff changeset
296 dnl
bee1d83d3af5 gnulib-common.m4: avoid aclocal.m4 bloat
Paul Eggert <eggert@cs.ucla.edu>
parents: 18710
diff changeset
297 dnl The '][' hides this use from 'aclocal'.
bee1d83d3af5 gnulib-common.m4: avoid aclocal.m4 bloat
Paul Eggert <eggert@cs.ucla.edu>
parents: 18710
diff changeset
298 m4_ifdef([A][M_PROG_AR], [A][M_PROG_AR], [:])
15562
c73d0845f357 Allow the user to override the choice of AR, ARFLAGS, RANLIB.
Bruno Haible <bruno@clisp.org>
parents: 15561
diff changeset
299 fi
18114
e212f9b1ce05 gnulib-common.m4: fix gl_PROG_AR_RANLIB/AM_PROG_AR clash
Pavel Raiskup <praiskup@redhat.com>
parents: 18039
diff changeset
300
e212f9b1ce05 gnulib-common.m4: fix gl_PROG_AR_RANLIB/AM_PROG_AR clash
Pavel Raiskup <praiskup@redhat.com>
parents: 18039
diff changeset
301 dnl In case the code above has not helped with setting AR/ARFLAGS, use
e212f9b1ce05 gnulib-common.m4: fix gl_PROG_AR_RANLIB/AM_PROG_AR clash
Pavel Raiskup <praiskup@redhat.com>
parents: 18039
diff changeset
302 dnl Automake-documented default values for AR and ARFLAGS, but prefer
e212f9b1ce05 gnulib-common.m4: fix gl_PROG_AR_RANLIB/AM_PROG_AR clash
Pavel Raiskup <praiskup@redhat.com>
parents: 18039
diff changeset
303 dnl ${host}-ar over ar (useful for cross-compiling).
e212f9b1ce05 gnulib-common.m4: fix gl_PROG_AR_RANLIB/AM_PROG_AR clash
Pavel Raiskup <praiskup@redhat.com>
parents: 18039
diff changeset
304 AC_CHECK_TOOL([AR], [ar], [ar])
e212f9b1ce05 gnulib-common.m4: fix gl_PROG_AR_RANLIB/AM_PROG_AR clash
Pavel Raiskup <praiskup@redhat.com>
parents: 18039
diff changeset
305 if test -z "$ARFLAGS"; then
e212f9b1ce05 gnulib-common.m4: fix gl_PROG_AR_RANLIB/AM_PROG_AR clash
Pavel Raiskup <praiskup@redhat.com>
parents: 18039
diff changeset
306 ARFLAGS='cr'
e212f9b1ce05 gnulib-common.m4: fix gl_PROG_AR_RANLIB/AM_PROG_AR clash
Pavel Raiskup <praiskup@redhat.com>
parents: 18039
diff changeset
307 fi
e212f9b1ce05 gnulib-common.m4: fix gl_PROG_AR_RANLIB/AM_PROG_AR clash
Pavel Raiskup <praiskup@redhat.com>
parents: 18039
diff changeset
308
15482
74bf515b04ad Add support for Minix with ACK compiler.
Bruno Haible <bruno@clisp.org>
parents: 15411
diff changeset
309 AC_SUBST([AR])
74bf515b04ad Add support for Minix with ACK compiler.
Bruno Haible <bruno@clisp.org>
parents: 15411
diff changeset
310 AC_SUBST([ARFLAGS])
15562
c73d0845f357 Allow the user to override the choice of AR, ARFLAGS, RANLIB.
Bruno Haible <bruno@clisp.org>
parents: 15561
diff changeset
311 if test -z "$RANLIB"; then
c73d0845f357 Allow the user to override the choice of AR, ARFLAGS, RANLIB.
Bruno Haible <bruno@clisp.org>
parents: 15561
diff changeset
312 if test $gl_cv_c_amsterdam_compiler = yes; then
c73d0845f357 Allow the user to override the choice of AR, ARFLAGS, RANLIB.
Bruno Haible <bruno@clisp.org>
parents: 15561
diff changeset
313 RANLIB=':'
c73d0845f357 Allow the user to override the choice of AR, ARFLAGS, RANLIB.
Bruno Haible <bruno@clisp.org>
parents: 15561
diff changeset
314 else
c73d0845f357 Allow the user to override the choice of AR, ARFLAGS, RANLIB.
Bruno Haible <bruno@clisp.org>
parents: 15561
diff changeset
315 dnl Use the ranlib program if it is available.
c73d0845f357 Allow the user to override the choice of AR, ARFLAGS, RANLIB.
Bruno Haible <bruno@clisp.org>
parents: 15561
diff changeset
316 AC_PROG_RANLIB
c73d0845f357 Allow the user to override the choice of AR, ARFLAGS, RANLIB.
Bruno Haible <bruno@clisp.org>
parents: 15561
diff changeset
317 fi
c73d0845f357 Allow the user to override the choice of AR, ARFLAGS, RANLIB.
Bruno Haible <bruno@clisp.org>
parents: 15561
diff changeset
318 fi
c73d0845f357 Allow the user to override the choice of AR, ARFLAGS, RANLIB.
Bruno Haible <bruno@clisp.org>
parents: 15561
diff changeset
319 AC_SUBST([RANLIB])
15482
74bf515b04ad Add support for Minix with ACK compiler.
Bruno Haible <bruno@clisp.org>
parents: 15411
diff changeset
320 ])
74bf515b04ad Add support for Minix with ACK compiler.
Bruno Haible <bruno@clisp.org>
parents: 15411
diff changeset
321
9411
5ea76912f0b5 Borrow an improved version of AC_C_RESTRICT from autoconf.
Bruno Haible <bruno@clisp.org>
parents: 7920
diff changeset
322 # AC_C_RESTRICT
17749
228d489fadb5 gnulib-common.m4: port to GCC 4.2.1 and Sun Studio 12 C++
Paul Eggert <eggert@cs.ucla.edu>
parents: 17692
diff changeset
323 # This definition is copied from post-2.69 Autoconf and overrides the
228d489fadb5 gnulib-common.m4: port to GCC 4.2.1 and Sun Studio 12 C++
Paul Eggert <eggert@cs.ucla.edu>
parents: 17692
diff changeset
324 # AC_C_RESTRICT macro from autoconf 2.60..2.69. It can be removed
228d489fadb5 gnulib-common.m4: port to GCC 4.2.1 and Sun Studio 12 C++
Paul Eggert <eggert@cs.ucla.edu>
parents: 17692
diff changeset
325 # once autoconf >= 2.70 can be assumed. It's painful to check version
228d489fadb5 gnulib-common.m4: port to GCC 4.2.1 and Sun Studio 12 C++
Paul Eggert <eggert@cs.ucla.edu>
parents: 17692
diff changeset
326 # numbers, and in practice this macro is more up-to-date than Autoconf
228d489fadb5 gnulib-common.m4: port to GCC 4.2.1 and Sun Studio 12 C++
Paul Eggert <eggert@cs.ucla.edu>
parents: 17692
diff changeset
327 # is, so override Autoconf unconditionally.
9411
5ea76912f0b5 Borrow an improved version of AC_C_RESTRICT from autoconf.
Bruno Haible <bruno@clisp.org>
parents: 7920
diff changeset
328 AC_DEFUN([AC_C_RESTRICT],
11007
f6cba5a556ce many *.m4 files: improve m4 quoting
Jim Meyering <meyering@redhat.com>
parents: 10658
diff changeset
329 [AC_CACHE_CHECK([for C/C++ restrict keyword], [ac_cv_c_restrict],
9411
5ea76912f0b5 Borrow an improved version of AC_C_RESTRICT from autoconf.
Bruno Haible <bruno@clisp.org>
parents: 7920
diff changeset
330 [ac_cv_c_restrict=no
5ea76912f0b5 Borrow an improved version of AC_C_RESTRICT from autoconf.
Bruno Haible <bruno@clisp.org>
parents: 7920
diff changeset
331 # The order here caters to the fact that C++ does not require restrict.
5ea76912f0b5 Borrow an improved version of AC_C_RESTRICT from autoconf.
Bruno Haible <bruno@clisp.org>
parents: 7920
diff changeset
332 for ac_kw in __restrict __restrict__ _Restrict restrict; do
17749
228d489fadb5 gnulib-common.m4: port to GCC 4.2.1 and Sun Studio 12 C++
Paul Eggert <eggert@cs.ucla.edu>
parents: 17692
diff changeset
333 AC_COMPILE_IFELSE(
228d489fadb5 gnulib-common.m4: port to GCC 4.2.1 and Sun Studio 12 C++
Paul Eggert <eggert@cs.ucla.edu>
parents: 17692
diff changeset
334 [AC_LANG_PROGRAM(
39722
f7fc45eece35 Continue to use spaces for indentation, not tabs.
Bruno Haible <bruno@clisp.org>
parents: 19596
diff changeset
335 [[typedef int *int_ptr;
f7fc45eece35 Continue to use spaces for indentation, not tabs.
Bruno Haible <bruno@clisp.org>
parents: 19596
diff changeset
336 int foo (int_ptr $ac_kw ip) { return ip[0]; }
f7fc45eece35 Continue to use spaces for indentation, not tabs.
Bruno Haible <bruno@clisp.org>
parents: 19596
diff changeset
337 int bar (int [$ac_kw]); /* Catch GCC bug 14050. */
f7fc45eece35 Continue to use spaces for indentation, not tabs.
Bruno Haible <bruno@clisp.org>
parents: 19596
diff changeset
338 int bar (int ip[$ac_kw]) { return ip[0]; }
f7fc45eece35 Continue to use spaces for indentation, not tabs.
Bruno Haible <bruno@clisp.org>
parents: 19596
diff changeset
339 ]],
f7fc45eece35 Continue to use spaces for indentation, not tabs.
Bruno Haible <bruno@clisp.org>
parents: 19596
diff changeset
340 [[int s[1];
f7fc45eece35 Continue to use spaces for indentation, not tabs.
Bruno Haible <bruno@clisp.org>
parents: 19596
diff changeset
341 int *$ac_kw t = s;
f7fc45eece35 Continue to use spaces for indentation, not tabs.
Bruno Haible <bruno@clisp.org>
parents: 19596
diff changeset
342 t[0] = 0;
f7fc45eece35 Continue to use spaces for indentation, not tabs.
Bruno Haible <bruno@clisp.org>
parents: 19596
diff changeset
343 return foo (t) + bar (t);
f7fc45eece35 Continue to use spaces for indentation, not tabs.
Bruno Haible <bruno@clisp.org>
parents: 19596
diff changeset
344 ]])],
9411
5ea76912f0b5 Borrow an improved version of AC_C_RESTRICT from autoconf.
Bruno Haible <bruno@clisp.org>
parents: 7920
diff changeset
345 [ac_cv_c_restrict=$ac_kw])
5ea76912f0b5 Borrow an improved version of AC_C_RESTRICT from autoconf.
Bruno Haible <bruno@clisp.org>
parents: 7920
diff changeset
346 test "$ac_cv_c_restrict" != no && break
5ea76912f0b5 Borrow an improved version of AC_C_RESTRICT from autoconf.
Bruno Haible <bruno@clisp.org>
parents: 7920
diff changeset
347 done
5ea76912f0b5 Borrow an improved version of AC_C_RESTRICT from autoconf.
Bruno Haible <bruno@clisp.org>
parents: 7920
diff changeset
348 ])
5ea76912f0b5 Borrow an improved version of AC_C_RESTRICT from autoconf.
Bruno Haible <bruno@clisp.org>
parents: 7920
diff changeset
349 AH_VERBATIM([restrict],
5ea76912f0b5 Borrow an improved version of AC_C_RESTRICT from autoconf.
Bruno Haible <bruno@clisp.org>
parents: 7920
diff changeset
350 [/* Define to the equivalent of the C99 'restrict' keyword, or to
5ea76912f0b5 Borrow an improved version of AC_C_RESTRICT from autoconf.
Bruno Haible <bruno@clisp.org>
parents: 7920
diff changeset
351 nothing if this is not supported. Do not define if restrict is
5ea76912f0b5 Borrow an improved version of AC_C_RESTRICT from autoconf.
Bruno Haible <bruno@clisp.org>
parents: 7920
diff changeset
352 supported directly. */
5ea76912f0b5 Borrow an improved version of AC_C_RESTRICT from autoconf.
Bruno Haible <bruno@clisp.org>
parents: 7920
diff changeset
353 #undef restrict
17749
228d489fadb5 gnulib-common.m4: port to GCC 4.2.1 and Sun Studio 12 C++
Paul Eggert <eggert@cs.ucla.edu>
parents: 17692
diff changeset
354 /* Work around a bug in Sun C++: it does not support _Restrict or
228d489fadb5 gnulib-common.m4: port to GCC 4.2.1 and Sun Studio 12 C++
Paul Eggert <eggert@cs.ucla.edu>
parents: 17692
diff changeset
355 __restrict__, even though the corresponding Sun C compiler ends up with
228d489fadb5 gnulib-common.m4: port to GCC 4.2.1 and Sun Studio 12 C++
Paul Eggert <eggert@cs.ucla.edu>
parents: 17692
diff changeset
356 "#define restrict _Restrict" or "#define restrict __restrict__" in the
228d489fadb5 gnulib-common.m4: port to GCC 4.2.1 and Sun Studio 12 C++
Paul Eggert <eggert@cs.ucla.edu>
parents: 17692
diff changeset
357 previous line. Perhaps some future version of Sun C++ will work with
228d489fadb5 gnulib-common.m4: port to GCC 4.2.1 and Sun Studio 12 C++
Paul Eggert <eggert@cs.ucla.edu>
parents: 17692
diff changeset
358 restrict; if so, hopefully it defines __RESTRICT like Sun C does. */
9411
5ea76912f0b5 Borrow an improved version of AC_C_RESTRICT from autoconf.
Bruno Haible <bruno@clisp.org>
parents: 7920
diff changeset
359 #if defined __SUNPRO_CC && !defined __RESTRICT
5ea76912f0b5 Borrow an improved version of AC_C_RESTRICT from autoconf.
Bruno Haible <bruno@clisp.org>
parents: 7920
diff changeset
360 # define _Restrict
17749
228d489fadb5 gnulib-common.m4: port to GCC 4.2.1 and Sun Studio 12 C++
Paul Eggert <eggert@cs.ucla.edu>
parents: 17692
diff changeset
361 # define __restrict__
9411
5ea76912f0b5 Borrow an improved version of AC_C_RESTRICT from autoconf.
Bruno Haible <bruno@clisp.org>
parents: 7920
diff changeset
362 #endif])
5ea76912f0b5 Borrow an improved version of AC_C_RESTRICT from autoconf.
Bruno Haible <bruno@clisp.org>
parents: 7920
diff changeset
363 case $ac_cv_c_restrict in
5ea76912f0b5 Borrow an improved version of AC_C_RESTRICT from autoconf.
Bruno Haible <bruno@clisp.org>
parents: 7920
diff changeset
364 restrict) ;;
5ea76912f0b5 Borrow an improved version of AC_C_RESTRICT from autoconf.
Bruno Haible <bruno@clisp.org>
parents: 7920
diff changeset
365 no) AC_DEFINE([restrict], []) ;;
5ea76912f0b5 Borrow an improved version of AC_C_RESTRICT from autoconf.
Bruno Haible <bruno@clisp.org>
parents: 7920
diff changeset
366 *) AC_DEFINE_UNQUOTED([restrict], [$ac_cv_c_restrict]) ;;
5ea76912f0b5 Borrow an improved version of AC_C_RESTRICT from autoconf.
Bruno Haible <bruno@clisp.org>
parents: 7920
diff changeset
367 esac
17749
228d489fadb5 gnulib-common.m4: port to GCC 4.2.1 and Sun Studio 12 C++
Paul Eggert <eggert@cs.ucla.edu>
parents: 17692
diff changeset
368 ])# AC_C_RESTRICT
11053
90ea94356c75 Don't use AC_REQUIRE([AC_C_BIGENDIAN]).
Bruno Haible <bruno@clisp.org>
parents: 11007
diff changeset
369
90ea94356c75 Don't use AC_REQUIRE([AC_C_BIGENDIAN]).
Bruno Haible <bruno@clisp.org>
parents: 11007
diff changeset
370 # gl_BIGENDIAN
90ea94356c75 Don't use AC_REQUIRE([AC_C_BIGENDIAN]).
Bruno Haible <bruno@clisp.org>
parents: 11007
diff changeset
371 # is like AC_C_BIGENDIAN, except that it can be AC_REQUIREd.
90ea94356c75 Don't use AC_REQUIRE([AC_C_BIGENDIAN]).
Bruno Haible <bruno@clisp.org>
parents: 11007
diff changeset
372 # Note that AC_REQUIRE([AC_C_BIGENDIAN]) does not work reliably because some
90ea94356c75 Don't use AC_REQUIRE([AC_C_BIGENDIAN]).
Bruno Haible <bruno@clisp.org>
parents: 11007
diff changeset
373 # macros invoke AC_C_BIGENDIAN with arguments.
90ea94356c75 Don't use AC_REQUIRE([AC_C_BIGENDIAN]).
Bruno Haible <bruno@clisp.org>
parents: 11007
diff changeset
374 AC_DEFUN([gl_BIGENDIAN],
90ea94356c75 Don't use AC_REQUIRE([AC_C_BIGENDIAN]).
Bruno Haible <bruno@clisp.org>
parents: 11007
diff changeset
375 [
90ea94356c75 Don't use AC_REQUIRE([AC_C_BIGENDIAN]).
Bruno Haible <bruno@clisp.org>
parents: 11007
diff changeset
376 AC_C_BIGENDIAN
90ea94356c75 Don't use AC_REQUIRE([AC_C_BIGENDIAN]).
Bruno Haible <bruno@clisp.org>
parents: 11007
diff changeset
377 ])
11229
6dad92faecd1 Avoid spurious "(cached)" in configure output.
Bruno Haible <bruno@clisp.org>
parents: 11105
diff changeset
378
6dad92faecd1 Avoid spurious "(cached)" in configure output.
Bruno Haible <bruno@clisp.org>
parents: 11105
diff changeset
379 # gl_CACHE_VAL_SILENT(cache-id, command-to-set-it)
6dad92faecd1 Avoid spurious "(cached)" in configure output.
Bruno Haible <bruno@clisp.org>
parents: 11105
diff changeset
380 # is like AC_CACHE_VAL(cache-id, command-to-set-it), except that it does not
6dad92faecd1 Avoid spurious "(cached)" in configure output.
Bruno Haible <bruno@clisp.org>
parents: 11105
diff changeset
381 # output a spurious "(cached)" mark in the midst of other configure output.
6dad92faecd1 Avoid spurious "(cached)" in configure output.
Bruno Haible <bruno@clisp.org>
parents: 11105
diff changeset
382 # This macro should be used instead of AC_CACHE_VAL when it is not surrounded
6dad92faecd1 Avoid spurious "(cached)" in configure output.
Bruno Haible <bruno@clisp.org>
parents: 11105
diff changeset
383 # by an AC_MSG_CHECKING/AC_MSG_RESULT pair.
6dad92faecd1 Avoid spurious "(cached)" in configure output.
Bruno Haible <bruno@clisp.org>
parents: 11105
diff changeset
384 AC_DEFUN([gl_CACHE_VAL_SILENT],
6dad92faecd1 Avoid spurious "(cached)" in configure output.
Bruno Haible <bruno@clisp.org>
parents: 11105
diff changeset
385 [
6dad92faecd1 Avoid spurious "(cached)" in configure output.
Bruno Haible <bruno@clisp.org>
parents: 11105
diff changeset
386 saved_as_echo_n="$as_echo_n"
6dad92faecd1 Avoid spurious "(cached)" in configure output.
Bruno Haible <bruno@clisp.org>
parents: 11105
diff changeset
387 as_echo_n=':'
6dad92faecd1 Avoid spurious "(cached)" in configure output.
Bruno Haible <bruno@clisp.org>
parents: 11105
diff changeset
388 AC_CACHE_VAL([$1], [$2])
6dad92faecd1 Avoid spurious "(cached)" in configure output.
Bruno Haible <bruno@clisp.org>
parents: 11105
diff changeset
389 as_echo_n="$saved_as_echo_n"
6dad92faecd1 Avoid spurious "(cached)" in configure output.
Bruno Haible <bruno@clisp.org>
parents: 11105
diff changeset
390 ])
17588
b1b3e9794cf9 include_next: port to autoconf 2.63
Eric Blake <eblake@redhat.com>
parents: 17576
diff changeset
391
b1b3e9794cf9 include_next: port to autoconf 2.63
Eric Blake <eblake@redhat.com>
parents: 17576
diff changeset
392 # AS_VAR_COPY was added in autoconf 2.63b
b1b3e9794cf9 include_next: port to autoconf 2.63
Eric Blake <eblake@redhat.com>
parents: 17576
diff changeset
393 m4_define_default([AS_VAR_COPY],
b1b3e9794cf9 include_next: port to autoconf 2.63
Eric Blake <eblake@redhat.com>
parents: 17576
diff changeset
394 [AS_LITERAL_IF([$1[]$2], [$1=$$2], [eval $1=\$$2])])