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-rw-r--r--m4/spawn_h.m4130
1 files changed, 130 insertions, 0 deletions
diff --git a/m4/spawn_h.m4 b/m4/spawn_h.m4
new file mode 100644
index 0000000..4862eef
--- /dev/null
+++ b/m4/spawn_h.m4
@@ -0,0 +1,130 @@
+# spawn_h.m4 serial 17
+dnl Copyright (C) 2008-2018 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 $ac_cv_header_spawn_h = yes; then
+ HAVE_SPAWN_H=1
+ AC_CHECK_TYPES([posix_spawnattr_t], [], [HAVE_POSIX_SPAWNATTR_T=0], [[
+#include <spawn.h>
+ ]])
+ AC_CHECK_TYPES([posix_spawn_file_actions_t], [],
+ [HAVE_POSIX_SPAWN_FILE_ACTIONS_T=0], [[
+#include <spawn.h>
+ ]])
+ else
+ HAVE_SPAWN_H=0
+ HAVE_POSIX_SPAWNATTR_T=0
+ HAVE_POSIX_SPAWN_FILE_ACTIONS_T=0
+ fi
+ AC_SUBST([HAVE_SPAWN_H])
+
+ dnl Ensure the type pid_t gets defined.
+ AC_REQUIRE([AC_TYPE_PID_T])
+
+ dnl Ensure the type mode_t gets defined.
+ AC_REQUIRE([AC_TYPE_MODE_T])
+
+ AC_REQUIRE([gl_HAVE_POSIX_SPAWN])
+
+ AC_REQUIRE([AC_C_RESTRICT])
+
+ dnl Check for declarations of anything we want to poison if the
+ dnl corresponding gnulib module is not in use.
+ gl_WARN_ON_USE_PREPARE([[#include <spawn.h>
+ ]], [posix_spawn posix_spawnp posix_spawnattr_init posix_spawnattr_destroy
+ posix_spawnattr_getsigdefault posix_spawnattr_setsigdefault
+ posix_spawnattr_getsigmask posix_spawnattr_setsigmask
+ posix_spawnattr_getflags posix_spawnattr_setflags
+ posix_spawnattr_getpgroup posix_spawnattr_setpgroup
+ posix_spawnattr_getschedpolicy posix_spawnattr_setschedpolicy
+ posix_spawnattr_getschedparam posix_spawnattr_setschedparam
+ posix_spawn_file_actions_init posix_spawn_file_actions_destroy
+ posix_spawn_file_actions_addopen posix_spawn_file_actions_addclose
+ posix_spawn_file_actions_adddup2 posix_spawn_file_actions_addchdir])
+])
+
+dnl Checks whether the system has the functions posix_spawn.
+dnl Sets ac_cv_func_posix_spawn and HAVE_POSIX_SPAWN.
+AC_DEFUN([gl_HAVE_POSIX_SPAWN],
+[
+ dnl Use AC_REQUIRE here, so that the default behavior below is expanded
+ dnl once only, before all statements that occur in other macros.
+ AC_REQUIRE([gl_SPAWN_H_DEFAULTS])
+
+ LIB_POSIX_SPAWN=
+ AC_SUBST([LIB_POSIX_SPAWN])
+ gl_saved_libs=$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
+])
+
+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_ADDCHDIR=0; AC_SUBST([GNULIB_POSIX_SPAWN_FILE_ACTIONS_ADDCHDIR])
+ 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])
+ HAVE_POSIX_SPAWN_FILE_ACTIONS_ADDCHDIR=1;
+ AC_SUBST([HAVE_POSIX_SPAWN_FILE_ACTIONS_ADDCHDIR])
+ 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_ADDOPEN=0;
+ AC_SUBST([REPLACE_POSIX_SPAWN_FILE_ACTIONS_ADDOPEN])
+])