ObjFW  Check-in [87b1318a27]

	*-*-mingw*)
		have_processes="yes"
		;;
	*-*-msdosdjgpp*)
		have_processes="no"
		;;
	*)
		AC_CHECK_FUNCS([fork dup2 execvp kill _exit], [
			AS_IF([test x"$ac_cv_func_fork" = x"yes" \
		AC_CHECK_FUNCS([vfork dup2 execvp kill _exit], [
			AS_IF([test x"$ac_cv_func_vfork" = x"yes" \
			    -a x"$ac_cv_func_pipe" = x"yes" \
			    -a x"$ac_cv_func_dup2" = x"yes" \
			    -a x"$ac_cv_func_execvp" = x"yes" \
			    -a x"$ac_cv_func_kill" = x"yes" \
			    -a x"$ac_cv_func__exit" = x"yes"], [
				have_processes="yes"
			])

					@throw [OFInitializationFailedException
					    exceptionWithClass: [self class]];
			} @finally {
				posix_spawn_file_actions_destroy(&actions);
				posix_spawnattr_destroy(&attr);
			}
# else
			if ((_pid = fork()) == 0) {
			if ((_pid = vfork()) == 0) {
				environ = env;

				close(_readPipe[0]);
				close(_writePipe[1]);
				dup2(_writePipe[0], 0);
				dup2(_readPipe[1], 1);
				execvp(path, argv);