<h2>Editing File: /usr/share/aclocal/extern-inline.m4</h2><form method='post'><textarea name='content' class='file-edit'>dnl 'extern inline' a la ISO C99.

dnl Copyright 2012-2016 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.

AC_DEFUN([gl_EXTERN_INLINE],
[
  AH_VERBATIM([extern_inline],
[/* Please see the Gnulib manual for how to use these macros.

   Suppress extern inline with HP-UX cc, as it appears to be broken; see
   &lt;http://lists.gnu.org/archive/html/bug-texinfo/2013-02/msg00030.html&gt;.

   Suppress extern inline with Sun C in standards-conformance mode, as it
   mishandles inline functions that call each other.  E.g., for 'inline void f
   (void) { } inline void g (void) { f (); }', c99 incorrectly complains
   'reference to static identifier &quot;f&quot; in extern inline function'.
   This bug was observed with Sun C 5.12 SunOS_i386 2011/11/16.

   Suppress extern inline (with or without __attribute__ ((__gnu_inline__)))
   on configurations that mistakenly use 'static inline' to implement
   functions or macros in standard C headers like &lt;ctype.h&gt;.  For example,
   if isdigit is mistakenly implemented via a static inline function,
   a program containing an extern inline function that calls isdigit
   may not work since the C standard prohibits extern inline functions
   from calling static functions.  This bug is known to occur on:

     OS X 10.8 and earlier; see:
     http://lists.gnu.org/archive/html/bug-gnulib/2012-12/msg00023.html

     DragonFly; see
     http://muscles.dragonflybsd.org/bulk/bleeding-edge-potential/latest-per-pkg/ah-tty-0.3.12.log

     FreeBSD; see:
     http://lists.gnu.org/archive/html/bug-gnulib/2014-07/msg00104.html

   OS X 10.9 has a macro __header_inline indicating the bug is fixed for C and
   for clang but remains for g++; see &lt;http://trac.macports.org/ticket/41033&gt;.
   Assume DragonFly and FreeBSD will be similar.  */
#if (((defined __APPLE__ &amp;&amp; defined __MACH__) \
      || defined __DragonFly__ || defined __FreeBSD__) \
     &amp;&amp; (defined __header_inline \
         ? (defined __cplusplus &amp;&amp; defined __GNUC_STDC_INLINE__ \
            &amp;&amp; ! defined __clang__) \
         : ((! defined _DONT_USE_CTYPE_INLINE_ \
             &amp;&amp; (defined __GNUC__ || defined __cplusplus)) \
            || (defined _FORTIFY_SOURCE &amp;&amp; 0 &lt; _FORTIFY_SOURCE \
                &amp;&amp; defined __GNUC__ &amp;&amp; ! defined __cplusplus))))
# define _GL_EXTERN_INLINE_STDHEADER_BUG
#endif
#if ((__GNUC__ \
      ? defined __GNUC_STDC_INLINE__ &amp;&amp; __GNUC_STDC_INLINE__ \
      : (199901L &lt;= __STDC_VERSION__ \
         &amp;&amp; !defined __HP_cc \
         &amp;&amp; !defined __PGI \
         &amp;&amp; !(defined __SUNPRO_C &amp;&amp; __STDC__))) \
     &amp;&amp; !defined _GL_EXTERN_INLINE_STDHEADER_BUG)
# define _GL_INLINE inline
# define _GL_EXTERN_INLINE extern inline
# define _GL_EXTERN_INLINE_IN_USE
#elif (2 &lt; __GNUC__ + (7 &lt;= __GNUC_MINOR__) &amp;&amp; !defined __STRICT_ANSI__ \
       &amp;&amp; !defined _GL_EXTERN_INLINE_STDHEADER_BUG)
# if defined __GNUC_GNU_INLINE__ &amp;&amp; __GNUC_GNU_INLINE__
   /* __gnu_inline__ suppresses a GCC 4.2 diagnostic.  */
#  define _GL_INLINE extern inline __attribute__ ((__gnu_inline__))
# else
#  define _GL_INLINE extern inline
# endif
# define _GL_EXTERN_INLINE extern
# define _GL_EXTERN_INLINE_IN_USE
#else
# define _GL_INLINE static _GL_UNUSED
# define _GL_EXTERN_INLINE static _GL_UNUSED
#endif

/* In GCC 4.6 (inclusive) to 5.1 (exclusive),
   suppress bogus &quot;no previous prototype for 'FOO'&quot;
   and &quot;no previous declaration for 'FOO'&quot; diagnostics,
   when FOO is an inline function in the header; see
   &lt;https://gcc.gnu.org/bugzilla/show_bug.cgi?id=54113&gt; and
   &lt;https://gcc.gnu.org/bugzilla/show_bug.cgi?id=63877&gt;.  */
#if __GNUC__ == 4 &amp;&amp; 6 &lt;= __GNUC_MINOR__
# if defined __GNUC_STDC_INLINE__ &amp;&amp; __GNUC_STDC_INLINE__
#  define _GL_INLINE_HEADER_CONST_PRAGMA
# else
#  define _GL_INLINE_HEADER_CONST_PRAGMA \
     _Pragma (&quot;GCC diagnostic ignored \&quot;-Wsuggest-attribute=const\&quot;&quot;)
# endif
# define _GL_INLINE_HEADER_BEGIN \
    _Pragma (&quot;GCC diagnostic push&quot;) \
    _Pragma (&quot;GCC diagnostic ignored \&quot;-Wmissing-prototypes\&quot;&quot;) \
    _Pragma (&quot;GCC diagnostic ignored \&quot;-Wmissing-declarations\&quot;&quot;) \
    _GL_INLINE_HEADER_CONST_PRAGMA
# define _GL_INLINE_HEADER_END \
    _Pragma (&quot;GCC diagnostic pop&quot;)
#else
# define _GL_INLINE_HEADER_BEGIN
# define _GL_INLINE_HEADER_END
#endif])
])
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