Tests of module 'spawn' in C++ mode.

[gnulib.git] / m4 / spawn_h.m4

diff --git a/m4/spawn_h.m4 b/m4/spawn_h.m4
index 5b4b214..fb789f0 100644 (file)
--- a/m4/spawn_h.m4
+++ b/m4/spawn_h.m4
@@ -1,5 +1,5 @@
-# spawn_h.m4 serial 5
-dnl Copyright (C) 2008-2009 Free Software Foundation, Inc.
+# spawn_h.m4 serial 7
+dnl Copyright (C) 2008-2010 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.
@@ -12,8 +12,7 @@ AC_DEFUN([gl_SPAWN_H],
   dnl once only, before all statements that occur in other macros.
   AC_REQUIRE([gl_SPAWN_H_DEFAULTS])
 
-  dnl Execute this unconditionally, because SPAWN_H may be set by other
-  dnl modules, after this code is executed.
+  dnl <spawn.h> is always overridden, because of GNULIB_POSIXCHECK.
   gl_CHECK_NEXT_HEADERS([spawn.h])
 
   AC_CHECK_HEADERS_ONCE([spawn.h])
@@ -35,12 +34,26 @@ AC_DEFUN([gl_SPAWN_H],
   AC_SUBST([HAVE_SPAWN_H])
 
   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_spawwn_file_actions_adddup2])
 ])
 
 dnl Unconditionally enables the replacement of <spawn.h>.
 AC_DEFUN([gl_REPLACE_SPAWN_H],
 [
-  AC_REQUIRE([gl_SPAWN_H_DEFAULTS])
+  dnl This is a no-op, because <spawn.h> is always overridden.
   :
 ])
 
@@ -49,6 +62,8 @@ 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])
   GNULIB_[]m4_translit([$1],[abcdefghijklmnopqrstuvwxyz./-],[ABCDEFGHIJKLMNOPQRSTUVWXYZ___])=1
+  dnl Define it also as a C macro, for the benefit of the unit tests.
+  gl_MODULE_INDICATOR([$1])
 ])
 
 AC_DEFUN([gl_SPAWN_H_DEFAULTS],