Re: inline related build failures on MacOS X 10.5

[Bruno Haible]

Peter O'Gorman wrote:
> It is unlikely that there will be a version of gcc from Apple based on
> gcc-4.3 or later (because Apple is currently not introducing any GPLv3
> software).

Currently... They will have to buy into gcc 4.3 or newer in the long run.

> Note that what will become Xcode-3.1 seems to have this fixed:
> http://www.opensource.apple.com/darwinsource/iPhoneSDKBeta3/gcc-5479/gcc/c-cppbuiltin.c
> compare to:
> http://www.opensource.apple.com/darwinsource/10.5/gcc-5465/gcc/c-cppbuiltin.c

Ohhhh... yet another nonstandard GCC variant. This one sets the macro
right, but still does not support the __attribute__((gnu_inline)) modifier
nor the -fgnu89-inline option.

This requires a change in the argp module:


2008-04-11  Bruno Haible  <address@hidden>

        Adapt to future versions of Apple GCC.
        * lib/argp-fmtstream.h (ARGP_FS_EI): Don't test __GNUC_GNU_INLINE__.
        Reported by Peter O'Gorman <address@hidden>.

*** lib/argp-fmtstream.h.orig   2008-04-12 03:23:14.000000000 +0200
--- lib/argp-fmtstream.h        2008-04-12 03:17:01.000000000 +0200
***************
*** 206,219 ****
        inline semantics, unless -fgnu89-inline is used.  It defines a macro
        __GNUC_STDC_INLINE__ to indicate this situation or a macro
        __GNUC_GNU_INLINE__ to indicate the opposite situation.
        GCC 4.2 with -std=c99 or -std=gnu99 implements the GNU C inline
        semantics but warns, unless -fgnu89-inline is used:
          warning: C99 inline functions are not supported; using GNU89
          warning: to disable this warning use -fgnu89-inline or the gnu_inline 
function attribute
!       It defines a macro __GNUC_GNU_INLINE__ to indicate this situation.  */
  #  if defined __GNUC_STDC_INLINE__
  #   define ARGP_FS_EI inline
! #  elif defined __GNUC_GNU_INLINE__
  #   define ARGP_FS_EI extern inline __attribute__ ((__gnu_inline__))
  #  else
  #   define ARGP_FS_EI extern inline
--- 206,249 ----
        inline semantics, unless -fgnu89-inline is used.  It defines a macro
        __GNUC_STDC_INLINE__ to indicate this situation or a macro
        __GNUC_GNU_INLINE__ to indicate the opposite situation.
+ 
        GCC 4.2 with -std=c99 or -std=gnu99 implements the GNU C inline
        semantics but warns, unless -fgnu89-inline is used:
          warning: C99 inline functions are not supported; using GNU89
          warning: to disable this warning use -fgnu89-inline or the gnu_inline 
function attribute
!       It defines a macro __GNUC_GNU_INLINE__ to indicate this situation.
! 
!       Whereas Apple GCC 4.0.1 build 5479 without -std=c99 or -std=gnu99
!       implements the GNU C inline semantics and defines the macro
!       __GNUC_GNU_INLINE__, but it does not warn and does not support
!       __attribute__ ((__gnu_inline__)).
! 
!       All in all, these are the possible combinations.  For every compiler,
!       we need to choose ARGP_FS_EI so that the corresponding table cell
!       contains an "ok".
! 
!         \    ARGP_FS_EI                      inline   extern    extern
!           \                                           inline    inline
!       CC    \                                                   __attribute__
!                                                                 ((gnu_inline))
! 
!       gcc 4.3.0                              error    ok        ok
!       gcc 4.3.0 -std=gnu99 -fgnu89-inline    error    ok        ok
!       gcc 4.3.0 -std=gnu99                   ok       error     ok
! 
!       gcc 4.2.2                              error    ok        ok
!       gcc 4.2.2 -std=gnu99 -fgnu89-inline    error    ok        ok
!       gcc 4.2.2 -std=gnu99                   error    warning   ok
! 
!       gcc 4.1.2                              error    ok        warning
!       gcc 4.1.2 -std=gnu99                   error    ok        warning
! 
!       Apple gcc 4.0.1                        error    ok        warning
!       Apple gcc 4.0.1 -std=gnu99             ok       error     warning
!     */
  #  if defined __GNUC_STDC_INLINE__
  #   define ARGP_FS_EI inline
! #  elif __GNUC__ > 4 || (__GNUC__ == 4 && __GNUC_MINOR__ >= 2)
  #   define ARGP_FS_EI extern inline __attribute__ ((__gnu_inline__))
  #  else
  #   define ARGP_FS_EI extern inline