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This incorporates: 2013-10-14 acl: allow cross-compilation to Gentoo 2013-10-18 extern-inline: make safe for -Wundef usage 2013-09-30 fpending: use pure+const function attrs * lib/fpending.h, m4/acl.m4, m4/extern-inline.m4: Update from gnulib.
81 lines
3.2 KiB
Plaintext
81 lines
3.2 KiB
Plaintext
# extern-inline.m4 serial 2
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dnl 'extern inline' a la ISO C99.
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dnl Copyright 2012-2013 Free Software Foundation, Inc.
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dnl This file is free software; the Free Software Foundation
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dnl gives unlimited permission to copy and/or distribute it,
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dnl with or without modifications, as long as this notice is preserved.
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AC_DEFUN([gl_EXTERN_INLINE],
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[
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AH_VERBATIM([extern_inline],
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[/* Please see the Gnulib manual for how to use these macros.
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Suppress extern inline with HP-UX cc, as it appears to be broken; see
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<http://lists.gnu.org/archive/html/bug-texinfo/2013-02/msg00030.html>.
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Suppress extern inline with Sun C in standards-conformance mode, as it
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mishandles inline functions that call each other. E.g., for 'inline void f
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(void) { } inline void g (void) { f (); }', c99 incorrectly complains
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'reference to static identifier "f" in extern inline function'.
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This bug was observed with Sun C 5.12 SunOS_i386 2011/11/16.
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Suppress the use of extern inline on problematic Apple configurations, as
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Libc at least through Libc-825.26 (2013-04-09) mishandles it; see, e.g.,
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<http://lists.gnu.org/archive/html/bug-gnulib/2012-12/msg00023.html>.
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Perhaps Apple will fix this some day. */
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#if (defined __APPLE__ \
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&& ((! defined _DONT_USE_CTYPE_INLINE_ \
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&& (defined __GNUC__ || defined __cplusplus)) \
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|| (defined _FORTIFY_SOURCE && 0 < _FORTIFY_SOURCE \
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&& defined __GNUC__ && ! defined __cplusplus)))
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# define _GL_EXTERN_INLINE_APPLE_BUG
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#endif
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#if ((__GNUC__ \
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? defined __GNUC_STDC_INLINE__ && __GNUC_STDC_INLINE__ \
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: (199901L <= __STDC_VERSION__ \
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&& !defined __HP_cc \
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&& !(defined __SUNPRO_C && __STDC__))) \
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&& !defined _GL_EXTERN_INLINE_APPLE_BUG)
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# define _GL_INLINE inline
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# define _GL_EXTERN_INLINE extern inline
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# define _GL_EXTERN_INLINE_IN_USE
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#elif (2 < __GNUC__ + (7 <= __GNUC_MINOR__) && !defined __STRICT_ANSI__ \
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&& !defined _GL_EXTERN_INLINE_APPLE_BUG)
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# if defined __GNUC_GNU_INLINE__ && __GNUC_GNU_INLINE__
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/* __gnu_inline__ suppresses a GCC 4.2 diagnostic. */
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# define _GL_INLINE extern inline __attribute__ ((__gnu_inline__))
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# else
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# define _GL_INLINE extern inline
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# endif
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# define _GL_EXTERN_INLINE extern
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# define _GL_EXTERN_INLINE_IN_USE
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#else
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# define _GL_INLINE static _GL_UNUSED
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# define _GL_EXTERN_INLINE static _GL_UNUSED
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#endif
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#if 4 < __GNUC__ + (6 <= __GNUC_MINOR__)
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# if defined __GNUC_STDC_INLINE__ && __GNUC_STDC_INLINE__
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# define _GL_INLINE_HEADER_CONST_PRAGMA
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# else
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# define _GL_INLINE_HEADER_CONST_PRAGMA \
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_Pragma ("GCC diagnostic ignored \"-Wsuggest-attribute=const\"")
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# endif
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/* Suppress GCC's bogus "no previous prototype for 'FOO'"
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and "no previous declaration for 'FOO'" diagnostics,
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when FOO is an inline function in the header; see
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<http://gcc.gnu.org/bugzilla/show_bug.cgi?id=54113>. */
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# define _GL_INLINE_HEADER_BEGIN \
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_Pragma ("GCC diagnostic push") \
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_Pragma ("GCC diagnostic ignored \"-Wmissing-prototypes\"") \
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_Pragma ("GCC diagnostic ignored \"-Wmissing-declarations\"") \
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_GL_INLINE_HEADER_CONST_PRAGMA
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# define _GL_INLINE_HEADER_END \
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_Pragma ("GCC diagnostic pop")
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#else
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# define _GL_INLINE_HEADER_BEGIN
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# define _GL_INLINE_HEADER_END
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#endif])
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])
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