[Bug binutils/21850] New: ifdef __cplusplus needed

[barry_davis at stormagic dot com]

https://sourceware.org/bugzilla/show_bug.cgi?id=21850

            Bug ID: 21850
           Summary: ifdef __cplusplus needed
           Product: binutils
           Version: 2.29
            Status: UNCONFIRMED
          Severity: normal
          Priority: P2
         Component: binutils
          Assignee: unassigned at sourceware dot org
          Reporter: barry_davis at stormagic dot com
  Target Milestone: ---

This needs an ifdef around it as it causes build failures when __cplusplus is
not defined and -Wundef -Werror are used.

I'm using gcc 4.8.4

/usr/include/ansidecl.h:

331#if __cplusplus >= 201103
332/* C++11 claims to be available: use it.  final/override were only
333   implemented in 4.7, though.  */
334# if GCC_VERSION < 4007
335#  define OVERRIDE
336#  define FINAL
337# else
338#  define OVERRIDE override
339#  define FINAL final
340# endif
341#elif GCC_VERSION >= 4007
342/* G++ 4.7 supports __final in C++98.  */
343# define OVERRIDE
344# define FINAL __final
345#else
346/* No C++11 support; leave the macros empty: */
347# define OVERRIDE
348# define FINAL
349#endif
350
351#ifdef __cplusplus
352}
353#endif
354
355#endif  /* ansidecl.h   */

My build failure:

  CC       /opensource/.smx_x86_64/linux-4.9/_x86_64/tools/perf/util/srcline.o
In file included from
/opensource/.smx_x86_64/binutils-2.29/_install/usr/include/bfd.h:42:0,
                 from util/srcline.c:21:
/opensource/.smx_x86_64/binutils-2.29/_install/usr/include/ansidecl.h:331:5:
error: "__cplusplus" is not defined [-Werror=undef]
 #if __cplusplus >= 201103
     ^
cc1: all warnings being treated as errors

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