Bug in __GNU_GETTEXT_SUPPORTED_REVISION macro definition in gettext.m4

[Martin Jacobs]

Hi,

file m4/gettext.m4 defines

#ifndef __GNU_GETTEXT_SUPPORTED_REVISION
#define __GNU_GETTEXT_SUPPORTED_REVISION(major) ((major) == 0 ? 0 : -1)
#endif
changequote(,)dnl
typedef int array [2 * (__GNU_GETTEXT_SUPPORTED_REVISION(0) >= 1) - 1];
changequote([,])dnl

This makes test compilation fail on systems that are lacking
__GNU_GETTEXT_SUPPORTED_REVISION in libintl.h because test
code calls this macro with argument value 0 which is expanded
to 0 and makes array declaration fail with negative array
dimension.

Changing that macro definition to

#define __GNU_GETTEXT_SUPPORTED_REVISION(major) ((major) == 0 ? 1 : -1)

makes configure and compilation happy and work fine.

Martin