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1# spawn_h.m4 serial 16
2dnl Copyright (C) 2008-2012 Free Software Foundation, Inc.
3dnl This file is free software; the Free Software Foundation
4dnl gives unlimited permission to copy and/or distribute it,
5dnl with or without modifications, as long as this notice is preserved.
6
7dnl Written by Bruno Haible.
8
9AC_DEFUN([gl_SPAWN_H],
10[
11  dnl Use AC_REQUIRE here, so that the default behavior below is expanded
12  dnl once only, before all statements that occur in other macros.
13  AC_REQUIRE([gl_SPAWN_H_DEFAULTS])
14
15  dnl <spawn.h> is always overridden, because of GNULIB_POSIXCHECK.
16  gl_CHECK_NEXT_HEADERS([spawn.h])
17
18  if test $ac_cv_header_spawn_h = yes; then
19    HAVE_SPAWN_H=1
20    AC_CHECK_TYPES([posix_spawnattr_t], [], [HAVE_POSIX_SPAWNATTR_T=0], [[
21#include <spawn.h>
22      ]])
23    AC_CHECK_TYPES([posix_spawn_file_actions_t], [],
24      [HAVE_POSIX_SPAWN_FILE_ACTIONS_T=0], [[
25#include <spawn.h>
26      ]])
27  else
28    HAVE_SPAWN_H=0
29    HAVE_POSIX_SPAWNATTR_T=0
30    HAVE_POSIX_SPAWN_FILE_ACTIONS_T=0
31  fi
32  AC_SUBST([HAVE_SPAWN_H])
33
34  dnl Ensure the type pid_t gets defined.
35  AC_REQUIRE([AC_TYPE_PID_T])
36
37  dnl Ensure the type mode_t gets defined.
38  AC_REQUIRE([AC_TYPE_MODE_T])
39
40  AC_REQUIRE([gl_HAVE_POSIX_SPAWN])
41
42  AC_REQUIRE([AC_C_RESTRICT])
43
44  dnl Check for declarations of anything we want to poison if the
45  dnl corresponding gnulib module is not in use.
46  gl_WARN_ON_USE_PREPARE([[#include <spawn.h>
47    ]], [posix_spawn posix_spawnp posix_spawnattr_init posix_spawnattr_destroy
48    posix_spawnattr_getsigdefault posix_spawnattr_setsigdefault
49    posix_spawnattr_getsigmask posix_spawnattr_setsigmask
50    posix_spawnattr_getflags posix_spawnattr_setflags
51    posix_spawnattr_getpgroup posix_spawnattr_setpgroup
52    posix_spawnattr_getschedpolicy posix_spawnattr_setschedpolicy
53    posix_spawnattr_getschedparam posix_spawnattr_setschedparam
54    posix_spawn_file_actions_init posix_spawn_file_actions_destroy
55    posix_spawn_file_actions_addopen posix_spawn_file_actions_addclose
56    posix_spawn_file_actions_adddup2])
57])
58
59dnl Checks whether the system has the functions posix_spawn.
60dnl Sets ac_cv_func_posix_spawn and HAVE_POSIX_SPAWN.
61AC_DEFUN([gl_HAVE_POSIX_SPAWN],
62[
63  dnl Use AC_REQUIRE here, so that the default behavior below is expanded
64  dnl once only, before all statements that occur in other macros.
65  AC_REQUIRE([gl_SPAWN_H_DEFAULTS])
66
67  AC_CHECK_FUNCS_ONCE([posix_spawn])
68  if test $ac_cv_func_posix_spawn != yes; then
69    HAVE_POSIX_SPAWN=0
70  fi
71])
72
73AC_DEFUN([gl_SPAWN_MODULE_INDICATOR],
74[
75  dnl Use AC_REQUIRE here, so that the default settings are expanded once only.
76  AC_REQUIRE([gl_SPAWN_H_DEFAULTS])
77  gl_MODULE_INDICATOR_SET_VARIABLE([$1])
78  dnl Define it also as a C macro, for the benefit of the unit tests.
79  gl_MODULE_INDICATOR_FOR_TESTS([$1])
80])
81
82AC_DEFUN([gl_SPAWN_H_DEFAULTS],
83[
84  GNULIB_POSIX_SPAWN=0;                       AC_SUBST([GNULIB_POSIX_SPAWN])
85  GNULIB_POSIX_SPAWNP=0;                      AC_SUBST([GNULIB_POSIX_SPAWNP])
86  GNULIB_POSIX_SPAWN_FILE_ACTIONS_INIT=0;     AC_SUBST([GNULIB_POSIX_SPAWN_FILE_ACTIONS_INIT])
87  GNULIB_POSIX_SPAWN_FILE_ACTIONS_ADDCLOSE=0; AC_SUBST([GNULIB_POSIX_SPAWN_FILE_ACTIONS_ADDCLOSE])
88  GNULIB_POSIX_SPAWN_FILE_ACTIONS_ADDDUP2=0;  AC_SUBST([GNULIB_POSIX_SPAWN_FILE_ACTIONS_ADDDUP2])
89  GNULIB_POSIX_SPAWN_FILE_ACTIONS_ADDOPEN=0;  AC_SUBST([GNULIB_POSIX_SPAWN_FILE_ACTIONS_ADDOPEN])
90  GNULIB_POSIX_SPAWN_FILE_ACTIONS_DESTROY=0;  AC_SUBST([GNULIB_POSIX_SPAWN_FILE_ACTIONS_DESTROY])
91  GNULIB_POSIX_SPAWNATTR_INIT=0;              AC_SUBST([GNULIB_POSIX_SPAWNATTR_INIT])
92  GNULIB_POSIX_SPAWNATTR_GETFLAGS=0;          AC_SUBST([GNULIB_POSIX_SPAWNATTR_GETFLAGS])
93  GNULIB_POSIX_SPAWNATTR_SETFLAGS=0;          AC_SUBST([GNULIB_POSIX_SPAWNATTR_SETFLAGS])
94  GNULIB_POSIX_SPAWNATTR_GETPGROUP=0;         AC_SUBST([GNULIB_POSIX_SPAWNATTR_GETPGROUP])
95  GNULIB_POSIX_SPAWNATTR_SETPGROUP=0;         AC_SUBST([GNULIB_POSIX_SPAWNATTR_SETPGROUP])
96  GNULIB_POSIX_SPAWNATTR_GETSCHEDPARAM=0;     AC_SUBST([GNULIB_POSIX_SPAWNATTR_GETSCHEDPARAM])
97  GNULIB_POSIX_SPAWNATTR_SETSCHEDPARAM=0;     AC_SUBST([GNULIB_POSIX_SPAWNATTR_SETSCHEDPARAM])
98  GNULIB_POSIX_SPAWNATTR_GETSCHEDPOLICY=0;    AC_SUBST([GNULIB_POSIX_SPAWNATTR_GETSCHEDPOLICY])
99  GNULIB_POSIX_SPAWNATTR_SETSCHEDPOLICY=0;    AC_SUBST([GNULIB_POSIX_SPAWNATTR_SETSCHEDPOLICY])
100  GNULIB_POSIX_SPAWNATTR_GETSIGDEFAULT=0;     AC_SUBST([GNULIB_POSIX_SPAWNATTR_GETSIGDEFAULT])
101  GNULIB_POSIX_SPAWNATTR_SETSIGDEFAULT=0;     AC_SUBST([GNULIB_POSIX_SPAWNATTR_SETSIGDEFAULT])
102  GNULIB_POSIX_SPAWNATTR_GETSIGMASK=0;        AC_SUBST([GNULIB_POSIX_SPAWNATTR_GETSIGMASK])
103  GNULIB_POSIX_SPAWNATTR_SETSIGMASK=0;        AC_SUBST([GNULIB_POSIX_SPAWNATTR_SETSIGMASK])
104  GNULIB_POSIX_SPAWNATTR_DESTROY=0;           AC_SUBST([GNULIB_POSIX_SPAWNATTR_DESTROY])
105  dnl Assume proper GNU behavior unless another module says otherwise.
106  HAVE_POSIX_SPAWN=1;        AC_SUBST([HAVE_POSIX_SPAWN])
107  HAVE_POSIX_SPAWNATTR_T=1;  AC_SUBST([HAVE_POSIX_SPAWNATTR_T])
108  HAVE_POSIX_SPAWN_FILE_ACTIONS_T=1;
109                             AC_SUBST([HAVE_POSIX_SPAWN_FILE_ACTIONS_T])
110  REPLACE_POSIX_SPAWN=0;     AC_SUBST([REPLACE_POSIX_SPAWN])
111  REPLACE_POSIX_SPAWN_FILE_ACTIONS_ADDCLOSE=0;
112                             AC_SUBST([REPLACE_POSIX_SPAWN_FILE_ACTIONS_ADDCLOSE])
113  REPLACE_POSIX_SPAWN_FILE_ACTIONS_ADDDUP2=0;
114                             AC_SUBST([REPLACE_POSIX_SPAWN_FILE_ACTIONS_ADDDUP2])
115  REPLACE_POSIX_SPAWN_FILE_ACTIONS_ADDOPEN=0;
116                             AC_SUBST([REPLACE_POSIX_SPAWN_FILE_ACTIONS_ADDOPEN])
117])
118