Gettext 0.13.1 - workaround ms bug

[Petr Pytelka]

Hi,

we are using Gettext 0.13.1 on Win32. There is not possible to change 
language "on the fly". This problem is due too "bug" (different 
behaviour) in getenv() function on Win32. Problem arise in using DLL 
version.

We think that best solution is to export one more function in Win32 
implementation which allow to workaround this problem. Function is 
called libintl_putenv and allow to set variable inside DLL runtime space.

Sorry for my broken English. I hope that you understand problem and 
described solution. I was looking around Internet and it looks like that 
more users found this problem and there is not good solution.

Thank you very much.

Petr Pytelka


Solution:

1. Add file putenv.c

#ifdef HAVE_CONFIG_H
# include <config.h>
#endif

#ifdef _LIBC
# define __need_NULL
# include <stddef.h>
#else
# include <stdlib.h>              /* Just for NULL.  */
#endif

#if defined _MSC_VER && BUILDING_DLL
# define DLL_EXPORTED __declspec(dllexport)
#else
# define DLL_EXPORTED
#endif

DLL_EXPORTED void libintl_putenv (const char *pVar)
{
        _putenv(pVar);
}

2. Add to libintl.h

#ifdef WIN32
#ifdef _INTL_REDIRECT_INLINE
extern LIBINTL_DLL_EXPORTED void libintl_putenv (const char *pVar);
#endif
#endif

3. Add putenv.c to Makefile.msvc
OBJECTS = bindtextdom.obj dcgettext.obj dgettext.obj gettext.obj 
finddomain.obj loadmsgcat.obj localealias.obj textdomain.obj 
l10nflist.obj explodename.obj dcigettext.obj dcngettext.obj 
dngettext.obj ngettext.obj plural.obj plural-exp.obj localcharset.obj 
relocatable.obj localename.obj log.obj putenv.obj printf.obj osdep.obj 
intl-compat.obj

putenv.obj : $(srcdir)\putenv.c
        $(CC) $(INCLUDES) $(CFLAGS) $(PICFLAGS) -c $(srcdir)\putenv.c