[PATCH, libgo]: Fix build warning

[Uros Bizjak <ubizjak at gmail dot com>]

Hello!

When building libgo on CentOS 5.11, following warnings appear:

In file included from /usr/include/fcntl.h:38:0,
                 from sysinfo.c:6:
/home/uros/gcc-build/gcc/include-fixed/sys/stat.h:317:16: warning:
inline function âlstat64â declared but never defined
 __inline__ int lstat64 (__const char *__restrict __file,
                ^
/home/uros/gcc-build/gcc/include-fixed/sys/stat.h:286:16: warning:
inline function âfstatat64â declared but never defined
 __inline__ int fstatat64 (int __fd, __const char *__restrict __file,
                ^
/home/uros/gcc-build/gcc/include-fixed/sys/stat.h:255:16: warning:
inline function âfstat64â declared but never defined
 __inline__ int fstat64 (int __fd, struct stat64 *__buf) __THROW
__nonnull ((2));
                ^
/home/uros/gcc-build/gcc/include-fixed/sys/stat.h:250:16: warning:
inline function âstat64â declared but never defined
 __inline__ int stat64 (__const char *__restrict __file,
                ^
These are emitted from:

CC="/home/uros/gcc-build/./gcc/xgcc -B/home/uros/gcc-build/./gcc/
-B/usr/local/x86_64-unknown-linux-gnu/bin/
-B/usr/local/x86_64-unknown-linux-gnu/lib/ -isystem /usr/
local/x86_64-unknown-linux-gnu/include -isystem
/usr/local/x86_64-unknown-linux-gnu/sys-include    -DHAVE_CONFIG_H -I.
-I../../../gcc-svn/trunk/libgo  -I ../../../gcc-svn/trunk/libgo/run
time -I../../../gcc-svn/trunk/libgo/../libffi/include
-I../libffi/include -pthread  -D_GNU_SOURCE -D_LARGEFILE_SOURCE
-D_FILE_OFFSET_BITS=64" /bin/sh ../../../gcc-svn/trunk/libgo/mksysin
fo.sh

due to the sys/stat.h, which protects above functions with:

# if defined __USE_LARGEFILE64 \
  && (! defined __USE_FILE_OFFSET64 \
      || (defined __REDIRECT_NTH && defined __OPTIMIZE__))

Adding -O to OSCFLAGS fixes this issue, as __OPTIMIZE__ is defined with -O.

Patch was bootstrapped and regression tested on x86_64-linux-gnu
(CentOS 5.11), where it removes the above warnings.

OK for mainline?

Uros.

Attachment: g.diff.txt
Description: Text document