c-strtold compilation failure on mingw

[Bruno Haible]

On mingw, I'm seeing this compilation error:

        gcc-3 -mno-cygwin -std=gnu99 -DHAVE_CONFIG_H -DEXEEXT=\".exe\" 
-DEXEEXT=\".exe\" -DNO_XMALLOC -DEXEEXT=\".exe\" -I. -I..  -I../intl 
-I/usr/local/mingw/include -Wall  -g -O2 -MT c-strtold.o -MD -MP -MF 
$depbase.Tpo -c -o c-strtold.o c-strtold.c &&\
        mv -f $depbase.Tpo $depbase.Po
In file included from 
/usr/lib/gcc/i686-pc-mingw32/3.4.4/../../../../include/w32api/windef.h:253,
                 from 
/usr/lib/gcc/i686-pc-mingw32/3.4.4/../../../../include/w32api/windows.h:48,
                 from 
/usr/lib/gcc/i686-pc-mingw32/3.4.4/../../../../include/w32api/winsock2.h:22,
                 from ./unistd.h:50,
                 from ./stdlib.h:75,
                 from c-strtod.c:26,
                 from c-strtold.c:2:
/usr/lib/gcc/i686-pc-mingw32/3.4.4/../../../../include/w32api/winnt.h:79: 
error: parse error before numeric constant
/usr/lib/gcc/i686-pc-mingw32/3.4.4/../../../../include/w32api/winnt.h:146: 
error: parse error before numeric constant
...

The reason is a 'typedef long LONG;' line in winnt.h:79, which collides with
the use of 'LONG' in lib/c-strtold.c. This fixes it.


2010-04-03  Bruno Haible  <address@hidden>

        stdlib: Avoid compilation failure of c-strtold on mingw.
        * lib/stdlib.in.h: Don't include <unistd.h> on native Windows systems.

--- lib/stdlib.in.h.orig        Sat Apr  3 12:04:00 2010
+++ lib/stdlib.in.h     Sat Apr  3 12:03:43 2010
@@ -67,10 +67,10 @@
 };
 #endif
 
-#if (@GNULIB_MKSTEMP@ || @GNULIB_GETSUBOPT@ || defined GNULIB_POSIXCHECK) && ! 
defined __GLIBC__
+#if (@GNULIB_MKSTEMP@ || @GNULIB_GETSUBOPT@ || defined GNULIB_POSIXCHECK) && ! 
defined __GLIBC__ && !((defined _WIN32 || defined __WIN32__) && ! defined 
__CYGWIN__)
 /* On MacOS X 10.3, only <unistd.h> declares mkstemp.  */
 /* On Cygwin 1.7.1, only <unistd.h> declares getsubopt.  */
-/* But avoid namespace pollution on glibc systems.  */
+/* But avoid namespace pollution on glibc systems and native Windows.  */
 # include <unistd.h>
 #endif