diff options
Diffstat (limited to 'dosish.h')
| -rw-r--r-- | dosish.h | 45 |
1 files changed, 45 insertions, 0 deletions
@@ -139,3 +139,48 @@ # define HAS_WAIT # define HAS_CHOWN #endif /* WIN32 */ + +/* + * <rich@phekda.freeserve.co.uk>: The DJGPP port has code that converts + * the return code of system() into the form that Unixy wait usually + * returns: + * + * - signal number in bits 0-6; + * - core dump flag in bit 7; + * - exit code in bits 8-15. + * + * Bits 0-7 are always zero for DJGPP, because it uses system(). + * See djgpp.c. + * + * POSIX::W* use the W* macros from <sys/wait.h> to decode + * the return code. Unfortunately the W* macros for DJGPP use + * a different format than Unixy wait does. So there's a mismatch + * and, say, WEXITSTATUS($?) will return bogus values. + * + * So here we add hack to redefine the W* macros from DJGPP's <sys/wait.h> + * to work with our return-code conversion. + */ + +#ifdef DJGPP + +#include <sys/wait.h> + +#undef WEXITSTATUS +#undef WIFEXITED +#undef WIFSIGNALED +#undef WIFSTOPPED +#undef WNOHANG +#undef WSTOPSIG +#undef WTERMSIG +#undef WUNTRACED + +#define WEXITSTATUS(stat_val) ((stat_val) >> 8) +#define WIFEXITED(stat_val) 0 +#define WIFSIGNALED(stat_val) 0 +#define WIFSTOPPED(stat_val) 0 +#define WNOHANG 0 +#define WSTOPSIG(stat_val) 0 +#define WTERMSIG(stat_val) 0 +#define WUNTRACED 0 + +#endif |