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# spawn_h.m4 serial 12
dnl Copyright (C) 2008-2011 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.
dnl Written by Bruno Haible.
AC_DEFUN([gl_SPAWN_H],
[
dnl Use AC_REQUIRE here, so that the default behavior below is expanded
dnl once only, before all statements that occur in other macros.
AC_REQUIRE([gl_SPAWN_H_DEFAULTS])
dnl <spawn.h> is always overridden, because of GNULIB_POSIXCHECK.
gl_CHECK_NEXT_HEADERS([spawn.h])
if test $ac_cv_header_spawn_h = yes; then
HAVE_SPAWN_H=1
AC_CHECK_TYPES([posix_spawnattr_t], [], [HAVE_POSIX_SPAWNATTR_T=0], [[
#include <spawn.h>
]])
AC_CHECK_TYPES([posix_spawn_file_actions_t], [],
[HAVE_POSIX_SPAWN_FILE_ACTIONS_T=0], [[
#include <spawn.h>
]])
else
HAVE_SPAWN_H=0
HAVE_POSIX_SPAWNATTR_T=0
HAVE_POSIX_SPAWN_FILE_ACTIONS_T=0
gl_REPLACE_SPAWN_H
fi
AC_SUBST([HAVE_SPAWN_H])
AC_REQUIRE([gl_HAVE_POSIX_SPAWN])
AC_REQUIRE([AC_C_RESTRICT])
dnl Check for declarations of anything we want to poison if the
dnl corresponding gnulib module is not in use.
gl_WARN_ON_USE_PREPARE([[#include <spawn.h>
]], [posix_spawn posix_spawnp posix_spawnattr_init posix_spawnattr_destroy
posix_spawnattr_getsigdefault posix_spawnattr_setsigdefault
posix_spawnattr_getsigmask posix_spawnattr_setsigmask
posix_spawnattr_getflags posix_spawnattr_setflags
posix_spawnattr_getpgroup posix_spawnattr_setpgroup
posix_spawnattr_getschedpolicy posix_spawnattr_setschedpolicy
posix_spawnattr_getschedparam posix_spawnattr_setschedparam
posix_spawn_file_actions_init posix_spawn_file_actions_destroy
posix_spawn_file_actions_addopen posix_spawn_file_actions_addclose
posix_spawn_file_actions_adddup2])
])
dnl Checks whether the system has the functions posix_spawn.
dnl Sets ac_cv_func_posix_spawn and HAVE_POSIX_SPAWN.
AC_DEFUN([gl_HAVE_POSIX_SPAWN],
[
dnl Use AC_REQUIRE here, so that the default behavior below is expanded
dnl once only, before all statements that occur in other macros.
AC_REQUIRE([gl_SPAWN_H_DEFAULTS])
AC_CHECK_FUNCS_ONCE([posix_spawn])
if test $ac_cv_func_posix_spawn != yes; then
HAVE_POSIX_SPAWN=0
fi
])
dnl Unconditionally enables the replacement of <spawn.h>.
AC_DEFUN([gl_REPLACE_SPAWN_H],
[
dnl This is a no-op, because <spawn.h> is always overridden.
:
])
AC_DEFUN([gl_SPAWN_MODULE_INDICATOR],
[
dnl Use AC_REQUIRE here, so that the default settings are expanded once only.
AC_REQUIRE([gl_SPAWN_H_DEFAULTS])
gl_MODULE_INDICATOR_SET_VARIABLE([$1])
dnl Define it also as a C macro, for the benefit of the unit tests.
gl_MODULE_INDICATOR_FOR_TESTS([$1])
])
AC_DEFUN([gl_SPAWN_H_DEFAULTS],
[
GNULIB_POSIX_SPAWN=0; AC_SUBST([GNULIB_POSIX_SPAWN])
GNULIB_POSIX_SPAWNP=0; AC_SUBST([GNULIB_POSIX_SPAWNP])
GNULIB_POSIX_SPAWN_FILE_ACTIONS_INIT=0; AC_SUBST([GNULIB_POSIX_SPAWN_FILE_ACTIONS_INIT])
GNULIB_POSIX_SPAWN_FILE_ACTIONS_ADDCLOSE=0; AC_SUBST([GNULIB_POSIX_SPAWN_FILE_ACTIONS_ADDCLOSE])
GNULIB_POSIX_SPAWN_FILE_ACTIONS_ADDDUP2=0; AC_SUBST([GNULIB_POSIX_SPAWN_FILE_ACTIONS_ADDDUP2])
GNULIB_POSIX_SPAWN_FILE_ACTIONS_ADDOPEN=0; AC_SUBST([GNULIB_POSIX_SPAWN_FILE_ACTIONS_ADDOPEN])
GNULIB_POSIX_SPAWN_FILE_ACTIONS_DESTROY=0; AC_SUBST([GNULIB_POSIX_SPAWN_FILE_ACTIONS_DESTROY])
GNULIB_POSIX_SPAWNATTR_INIT=0; AC_SUBST([GNULIB_POSIX_SPAWNATTR_INIT])
GNULIB_POSIX_SPAWNATTR_GETFLAGS=0; AC_SUBST([GNULIB_POSIX_SPAWNATTR_GETFLAGS])
GNULIB_POSIX_SPAWNATTR_SETFLAGS=0; AC_SUBST([GNULIB_POSIX_SPAWNATTR_SETFLAGS])
GNULIB_POSIX_SPAWNATTR_GETPGROUP=0; AC_SUBST([GNULIB_POSIX_SPAWNATTR_GETPGROUP])
GNULIB_POSIX_SPAWNATTR_SETPGROUP=0; AC_SUBST([GNULIB_POSIX_SPAWNATTR_SETPGROUP])
GNULIB_POSIX_SPAWNATTR_GETSCHEDPARAM=0; AC_SUBST([GNULIB_POSIX_SPAWNATTR_GETSCHEDPARAM])
GNULIB_POSIX_SPAWNATTR_SETSCHEDPARAM=0; AC_SUBST([GNULIB_POSIX_SPAWNATTR_SETSCHEDPARAM])
GNULIB_POSIX_SPAWNATTR_GETSCHEDPOLICY=0; AC_SUBST([GNULIB_POSIX_SPAWNATTR_GETSCHEDPOLICY])
GNULIB_POSIX_SPAWNATTR_SETSCHEDPOLICY=0; AC_SUBST([GNULIB_POSIX_SPAWNATTR_SETSCHEDPOLICY])
GNULIB_POSIX_SPAWNATTR_GETSIGDEFAULT=0; AC_SUBST([GNULIB_POSIX_SPAWNATTR_GETSIGDEFAULT])
GNULIB_POSIX_SPAWNATTR_SETSIGDEFAULT=0; AC_SUBST([GNULIB_POSIX_SPAWNATTR_SETSIGDEFAULT])
GNULIB_POSIX_SPAWNATTR_GETSIGMASK=0; AC_SUBST([GNULIB_POSIX_SPAWNATTR_GETSIGMASK])
GNULIB_POSIX_SPAWNATTR_SETSIGMASK=0; AC_SUBST([GNULIB_POSIX_SPAWNATTR_SETSIGMASK])
GNULIB_POSIX_SPAWNATTR_DESTROY=0; AC_SUBST([GNULIB_POSIX_SPAWNATTR_DESTROY])
dnl Assume proper GNU behavior unless another module says otherwise.
HAVE_POSIX_SPAWN=1; AC_SUBST([HAVE_POSIX_SPAWN])
HAVE_POSIX_SPAWNATTR_T=1; AC_SUBST([HAVE_POSIX_SPAWNATTR_T])
HAVE_POSIX_SPAWN_FILE_ACTIONS_T=1;
AC_SUBST([HAVE_POSIX_SPAWN_FILE_ACTIONS_T])
REPLACE_POSIX_SPAWN=0; AC_SUBST([REPLACE_POSIX_SPAWN])
])
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