# pipe.m4 serial 1 dnl Copyright (C) 2004 Free Software Foundation, Inc. dnl This file is free software; the Free Software Foundation dnl gives unlimited permission to copy and/or distribute it, dnl with or without modifications, as long as this notice is preserved. AC_DEFUN([gl_PIPE], [ dnl Prerequisites of lib/pipe.h. AC_CHECK_HEADERS_ONCE(unistd.h) dnl Prerequisites of lib/pipe.c. AC_REQUIRE([AC_C_INLINE]) AC_REQUIRE([AC_TYPE_MODE_T]) AC_REQUIRE([AC_FUNC_FORK]) AC_CHECK_FUNCS(posix_spawn) ])