Re: glademm 2.5: Why does non-NLS version undefine gettext() etc?



Murray Cumming wrote:

There is a glademm mailing list. This is not it. However, libglademm
would be on topic here.
Is there, now? I haven't worked much with gtkmm/glademm lately (I've been doing lots of embedded development, among other things...), and last time I did, this was the only place to ask...

Sorry.

Urgh. There are too many mailing lists in this world...

On Thu, 2004-11-25 at 16:16 +0100, Toralf Lund wrote:
From a glademm-2.5 generated source code file:

#ifdef ENABLE_NLS
#  include <libintl.h>
#  undef _
#  define _(String) dgettext (GETTEXT_PACKAGE, String)
#  ifdef gettext_noop
#    define N_(String) gettext_noop (String)
#  else
#    define N_(String) (String)
#  endif
#else
#  define textdomain(String) (String)
#  define gettext(String) (String)
#  define dgettext(Domain,Message) (Message)
#  define dcgettext(Domain,Message,Type) (Message)
#  define bindtextdomain(Domain,Directory) (Domain)
#  define _(String) (String)
#  define N_(String) (String)
#endif

Why does the #else branch do all this? I mean, shouldn't it just define _() and N_(), and leave gettext() etc. alone? Isn't the point of using _()/_N() precisely to avoid overriding the "gettext" calls themselves?

The above construction leads to a compilation error if you don't define ENABLE_NLS, but happen to include libintl.h anyway - like this:

/usr/include/libintl.h:40: parse error before `__const'
/usr/include/libintl.h:44: parse error before `__const'
/usr/include/libintl.h:51: parse error before `__const'
/usr/include/libintl.h:81: parse error before `__const'
/usr/include/libintl.h:85: parse error before `__const'

which is due to the fact that the function prototypes will be changed by macro expansion, so that e.g.

extern char *gettext (__const char *__msgid) __THROW;

becomes

extern char *(__const char *__msgid) throw ();



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