1 # sys_wait_h.m4 serial 6 2 dnl Copyright (C) 2008-2012 Free Software Foundation, Inc. 3 dnl This file is free software; the Free Software Foundation 4 dnl gives unlimited permission to copy and/or distribute it, 5 dnl with or without modifications, as long as this notice is preserved. 6 7 AC_DEFUN([gl_SYS_WAIT_H], 8 [ 9 AC_REQUIRE([gl_SYS_WAIT_H_DEFAULTS]) 10 11 dnl <sys/wait.h> is always overridden, because of GNULIB_POSIXCHECK. 12 gl_CHECK_NEXT_HEADERS([sys/wait.h]) 13 14 dnl Ensure the type pid_t gets defined. 15 AC_REQUIRE([AC_TYPE_PID_T]) 16 17 dnl Check for declarations of anything we want to poison if the 18 dnl corresponding gnulib module is not in use. 19 gl_WARN_ON_USE_PREPARE([[#include <sys/wait.h>]], 20 [waitpid]) 21 ]) 22 23 AC_DEFUN([gl_SYS_WAIT_MODULE_INDICATOR], 24 [ 25 dnl Use AC_REQUIRE here, so that the default settings are expanded once only. 26 AC_REQUIRE([gl_SYS_WAIT_H_DEFAULTS]) 27 gl_MODULE_INDICATOR_SET_VARIABLE([$1]) 28 dnl Define it also as a C macro, for the benefit of the unit tests. 29 gl_MODULE_INDICATOR_FOR_TESTS([$1]) 30 ]) 31 32 AC_DEFUN([gl_SYS_WAIT_H_DEFAULTS], 33 [ 34 GNULIB_WAITPID=0; AC_SUBST([GNULIB_WAITPID]) 35 dnl Assume proper GNU behavior unless another module says otherwise. 36 ]) 37
