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authorHolger Weiss <holger@zedat.fu-berlin.de>2013-08-19 21:27:12 (GMT)
committerHolger Weiss <holger@zedat.fu-berlin.de>2013-08-19 21:27:12 (GMT)
commit26fbe7f1e68bb0c96da32491efcf3696fe6c299b (patch)
treec4d95289187a64e9c7517bf73d8208026c3d2fb3 /gl/m4/extern-inline.m4
parent5f79e3e9f62ca5487d9881973149136ba1d19d3e (diff)
downloadmonitoring-plugins-26fbe7f1e68bb0c96da32491efcf3696fe6c299b.tar.gz
Sync with the latest Gnulib code (6f2d632)
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1dnl 'extern inline' a la ISO C99.
2
3dnl Copyright 2012-2013 Free Software Foundation, Inc.
4dnl This file is free software; the Free Software Foundation
5dnl gives unlimited permission to copy and/or distribute it,
6dnl with or without modifications, as long as this notice is preserved.
7
8AC_DEFUN([gl_EXTERN_INLINE],
9[
10 AH_VERBATIM([extern_inline],
11[/* Please see the Gnulib manual for how to use these macros.
12
13 Suppress extern inline with HP-UX cc, as it appears to be broken; see
14 <http://lists.gnu.org/archive/html/bug-texinfo/2013-02/msg00030.html>.
15
16 Suppress extern inline with Sun C in standards-conformance mode, as it
17 mishandles inline functions that call each other. E.g., for 'inline void f
18 (void) { } inline void g (void) { f (); }', c99 incorrectly complains
19 'reference to static identifier "f" in extern inline function'.
20 This bug was observed with Sun C 5.12 SunOS_i386 2011/11/16.
21
22 Suppress the use of extern inline on Apple's platforms, as Libc at least
23 through Libc-825.26 (2013-04-09) is incompatible with it; see, e.g.,
24 <http://lists.gnu.org/archive/html/bug-gnulib/2012-12/msg00023.html>.
25 Perhaps Apple will fix this some day. */
26#if ((__GNUC__ \
27 ? defined __GNUC_STDC_INLINE__ && __GNUC_STDC_INLINE__ \
28 : (199901L <= __STDC_VERSION__ \
29 && !defined __HP_cc \
30 && !(defined __SUNPRO_C && __STDC__))) \
31 && !defined __APPLE__)
32# define _GL_INLINE inline
33# define _GL_EXTERN_INLINE extern inline
34#elif (2 < __GNUC__ + (7 <= __GNUC_MINOR__) && !defined __STRICT_ANSI__ \
35 && !defined __APPLE__)
36# if __GNUC_GNU_INLINE__
37 /* __gnu_inline__ suppresses a GCC 4.2 diagnostic. */
38# define _GL_INLINE extern inline __attribute__ ((__gnu_inline__))
39# else
40# define _GL_INLINE extern inline
41# endif
42# define _GL_EXTERN_INLINE extern
43#else
44# define _GL_INLINE static _GL_UNUSED
45# define _GL_EXTERN_INLINE static _GL_UNUSED
46#endif
47
48#if 4 < __GNUC__ + (6 <= __GNUC_MINOR__)
49# if defined __GNUC_STDC_INLINE__ && __GNUC_STDC_INLINE__
50# define _GL_INLINE_HEADER_CONST_PRAGMA
51# else
52# define _GL_INLINE_HEADER_CONST_PRAGMA \
53 _Pragma ("GCC diagnostic ignored \"-Wsuggest-attribute=const\"")
54# endif
55 /* Suppress GCC's bogus "no previous prototype for 'FOO'"
56 and "no previous declaration for 'FOO'" diagnostics,
57 when FOO is an inline function in the header; see
58 <http://gcc.gnu.org/bugzilla/show_bug.cgi?id=54113>. */
59# define _GL_INLINE_HEADER_BEGIN \
60 _Pragma ("GCC diagnostic push") \
61 _Pragma ("GCC diagnostic ignored \"-Wmissing-prototypes\"") \
62 _Pragma ("GCC diagnostic ignored \"-Wmissing-declarations\"") \
63 _GL_INLINE_HEADER_CONST_PRAGMA
64# define _GL_INLINE_HEADER_END \
65 _Pragma ("GCC diagnostic pop")
66#else
67# define _GL_INLINE_HEADER_BEGIN
68# define _GL_INLINE_HEADER_END
69#endif])
70])