ObjFW  Check-in [f45a6bb10b]

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

			close(_readPipe[0]);
			close(_writePipe[1]);
			dup2(_writePipe[0], 0);
			dup2(_readPipe[1], 1);
			execvp([program cStringWithEncoding: encoding], argv);

			@throw [OFInitializationFailedException
			_exit(EXIT_FAILURE);
			    exceptionWithClass: [self class]];
		case -1:
			@throw [OFInitializationFailedException
			    exceptionWithClass: [self class]];
		default:
			close(_readPipe[1]);
			close(_writePipe[0]);
			break;