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# spawn_h.m4 serial 21
dnl Copyright (C) 2008-2022 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_ONCE([gl_SPAWN_H],
[
dnl Ensure to expand the default settings once only, before all statements
dnl 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 $ac_cv_header_spawn_h = yes; then
HAVE_SPAWN_H=1
AC_CHECK_TYPES([posix_spawnattr_t], [], [HAVE_POSIX_SPAWNATTR_T=0], [[
#include <spawn.h>
]])
AC_CHECK_TYPES([posix_spawn_file_actions_t], [],
[HAVE_POSIX_SPAWN_FILE_ACTIONS_T=0], [[
#include <spawn.h>
]])
else
HAVE_SPAWN_H=0
HAVE_POSIX_SPAWNATTR_T=0
HAVE_POSIX_SPAWN_FILE_ACTIONS_T=0
fi
AC_SUBST([HAVE_SPAWN_H])
dnl Ensure the type pid_t gets defined.
AC_REQUIRE([AC_TYPE_PID_T])
dnl Ensure the type mode_t gets defined.
AC_REQUIRE([AC_TYPE_MODE_T])
AC_REQUIRE([gl_HAVE_POSIX_SPAWN])
AC_REQUIRE([AC_C_RESTRICT])
dnl Check for declarations of anything we want to poison if the
dnl corresponding gnulib module is not in use.
gl_WARN_ON_USE_PREPARE([[#include <spawn.h>
]], [posix_spawn posix_spawnp posix_spawnattr_init posix_spawnattr_destroy
posix_spawnattr_getsigdefault posix_spawnattr_setsigdefault
posix_spawnattr_getsigmask posix_spawnattr_setsigmask
posix_spawnattr_getflags posix_spawnattr_setflags
posix_spawnattr_getpgroup posix_spawnattr_setpgroup
posix_spawnattr_getschedpolicy posix_spawnattr_setschedpolicy
posix_spawnattr_getschedparam posix_spawnattr_setschedparam
posix_spawn_file_actions_init posix_spawn_file_actions_destroy
posix_spawn_file_actions_addopen posix_spawn_file_actions_addclose
posix_spawn_file_actions_adddup2 posix_spawn_file_actions_addchdir
posix_spawn_file_actions_addfchdir])
])
dnl Checks whether the system has the functions posix_spawn.
dnl Sets ac_cv_func_posix_spawn and HAVE_POSIX_SPAWN.
AC_DEFUN([gl_HAVE_POSIX_SPAWN],
[
dnl Ensure to expand the default settings once only, before all statements
dnl that occur in other macros.
AC_REQUIRE([gl_SPAWN_H_DEFAULTS])
LIB_POSIX_SPAWN=
AC_SUBST([LIB_POSIX_SPAWN])
gl_saved_libs=$LIBS
AC_SEARCH_LIBS([posix_spawn], [rt],
[test "$ac_cv_search_posix_spawn" = "none required" ||
LIB_POSIX_SPAWN=$ac_cv_search_posix_spawn])
AC_CHECK_FUNCS([posix_spawn])
LIBS=$gl_saved_libs
if test $ac_cv_func_posix_spawn != yes; then
HAVE_POSIX_SPAWN=0
fi
])
# gl_SPAWN_MODULE_INDICATOR([modulename])
# sets the shell variable that indicates the presence of the given module
# to a C preprocessor expression that will evaluate to 1.
# This macro invocation must not occur in macros that are AC_REQUIREd.
AC_DEFUN([gl_SPAWN_MODULE_INDICATOR],
[
dnl Ensure to expand the default settings once only.
gl_SPAWN_H_REQUIRE_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])
])
# Initializes the default values for AC_SUBSTed shell variables.
# This macro must not be AC_REQUIREd. It must only be invoked, and only
# outside of macros or in macros that are not AC_REQUIREd.
AC_DEFUN([gl_SPAWN_H_REQUIRE_DEFAULTS],
[
m4_defun(GL_MODULE_INDICATOR_PREFIX[_SPAWN_H_MODULE_INDICATOR_DEFAULTS], [
gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_POSIX_SPAWN])
gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_POSIX_SPAWNP])
gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_POSIX_SPAWN_FILE_ACTIONS_INIT])
gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_POSIX_SPAWN_FILE_ACTIONS_ADDCHDIR])
gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_POSIX_SPAWN_FILE_ACTIONS_ADDCLOSE])
gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_POSIX_SPAWN_FILE_ACTIONS_ADDDUP2])
gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_POSIX_SPAWN_FILE_ACTIONS_ADDFCHDIR])
gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_POSIX_SPAWN_FILE_ACTIONS_ADDOPEN])
gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_POSIX_SPAWN_FILE_ACTIONS_DESTROY])
gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_POSIX_SPAWNATTR_INIT])
gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_POSIX_SPAWNATTR_GETFLAGS])
gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_POSIX_SPAWNATTR_SETFLAGS])
gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_POSIX_SPAWNATTR_GETPGROUP])
gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_POSIX_SPAWNATTR_SETPGROUP])
gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_POSIX_SPAWNATTR_GETSCHEDPARAM])
gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_POSIX_SPAWNATTR_SETSCHEDPARAM])
gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_POSIX_SPAWNATTR_GETSCHEDPOLICY])
gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_POSIX_SPAWNATTR_SETSCHEDPOLICY])
gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_POSIX_SPAWNATTR_GETSIGDEFAULT])
gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_POSIX_SPAWNATTR_SETSIGDEFAULT])
gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_POSIX_SPAWNATTR_GETSIGMASK])
gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_POSIX_SPAWNATTR_SETSIGMASK])
gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_POSIX_SPAWNATTR_DESTROY])
])
m4_require(GL_MODULE_INDICATOR_PREFIX[_SPAWN_H_MODULE_INDICATOR_DEFAULTS])
AC_REQUIRE([gl_SPAWN_H_DEFAULTS])
])
AC_DEFUN([gl_SPAWN_H_DEFAULTS],
[
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])
HAVE_POSIX_SPAWN_FILE_ACTIONS_ADDCHDIR=1;
AC_SUBST([HAVE_POSIX_SPAWN_FILE_ACTIONS_ADDCHDIR])
HAVE_POSIX_SPAWN_FILE_ACTIONS_ADDFCHDIR=1;
AC_SUBST([HAVE_POSIX_SPAWN_FILE_ACTIONS_ADDFCHDIR])
REPLACE_POSIX_SPAWN=0; AC_SUBST([REPLACE_POSIX_SPAWN])
REPLACE_POSIX_SPAWN_FILE_ACTIONS_ADDCHDIR=0;
AC_SUBST([REPLACE_POSIX_SPAWN_FILE_ACTIONS_ADDCHDIR])
REPLACE_POSIX_SPAWN_FILE_ACTIONS_ADDCLOSE=0;
AC_SUBST([REPLACE_POSIX_SPAWN_FILE_ACTIONS_ADDCLOSE])
REPLACE_POSIX_SPAWN_FILE_ACTIONS_ADDDUP2=0;
AC_SUBST([REPLACE_POSIX_SPAWN_FILE_ACTIONS_ADDDUP2])
REPLACE_POSIX_SPAWN_FILE_ACTIONS_ADDFCHDIR=0;
AC_SUBST([REPLACE_POSIX_SPAWN_FILE_ACTIONS_ADDFCHDIR])
REPLACE_POSIX_SPAWN_FILE_ACTIONS_ADDOPEN=0;
AC_SUBST([REPLACE_POSIX_SPAWN_FILE_ACTIONS_ADDOPEN])
])
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