Hi Simon,
> Building in cygwin fails because:
>
> depbase=`echo test-fcntl-h-c++.o | sed 's|[^/]*$|.deps/&|;s|\.o$||'`;\
> g++ -DHAVE_CONFIG_H -I. -I. -I. -I.. -I./.. -I../gllib -I./../gllib
> -MT test-fcntl-h-c++.o -MD -MP -MF $depbase.Tpo -c -o test-fcntl-h-c++.o
> test-fcntl-h-c++.cc &&\
> mv -f $depbase.Tpo $depbase.Po
> In file included from ../gllib/fcntl.h:41,
> from test-fcntl-h-c++.cc:22:
> ../gllib/sys/stat.h:668: error: ‘lchmod’ was not declared in this scope
> ../gllib/sys/stat.h:668: error: invalid type in declaration before ‘;’
> token
> make[3]: *** [test-fcntl-h-c++.o] Error 1
The problem is that we try to attach a warning attribute to a function that is
not
declared. This is in the case (defined __cplusplus && defined GNULIB_NAMESPACE).
In the opposite case, we do a #define lchmod chmod, and in this case there is
also a
bug: we are attaching the warning attribute to the 'chmod' function.
Fixed as follows:
2010-03-27 Bruno Haible <br...@clisp.org>
Fix a compilation error on Cygwin with g++ >= 4.3.
* lib/sys_stat.in.h (lchmod): Don't warn about the use of this function
if it is undefined or if we alias it to chmod.
(lstat): Don't warn about the use of this function if it is undefined
or if we alias it to stat.
Reported by Simon Josefsson.
--- lib/sys_stat.in.h.orig Sat Mar 27 14:28:06 2010
+++ lib/sys_stat.in.h Sat Mar 27 14:24:25 2010
@@ -398,7 +398,9 @@
# endif
_GL_CXXALIAS_SYS (lchmod, int, (const char *filename, mode_t mode));
# endif
+# if @HAVE_LCHMOD@
_GL_CXXALIASWARN (lchmod);
+# endif
#elif defined GNULIB_POSIXCHECK
# undef lchmod
# if HAVE_RAW_DECL_LCHMOD
@@ -427,7 +429,9 @@
# else
_GL_CXXALIAS_SYS (lstat, int, (const char *name, struct stat *buf));
# endif
+# if @HAVE_LSTAT@
_GL_CXXALIASWARN (lstat);
+# endif
#elif defined GNULIB_POSIXCHECK
# undef lstat
# if HAVE_RAW_DECL_LSTAT
