X-Git-Url: http://erislabs.net/gitweb/?a=blobdiff_plain;f=lib%2Fspawn.in.h;h=eb76bb0858b9c6d5f3604b98b2e27daf0befe6d3;hb=1276a2c5f24c0c932426aca9c899fa524d2443f2;hp=5a7633c2f93f4cf3d9f6569fe2951f63471e3168;hpb=01972990f6045f7da03165940d532c270595ff67;p=gnulib.git

diff --git a/lib/spawn.in.h b/lib/spawn.in.h
index 5a7633c2f..eb76bb085 100644
--- a/lib/spawn.in.h
+++ b/lib/spawn.in.h
@@ -1,5 +1,5 @@
 /* Definitions for POSIX spawn interface.
-   Copyright (C) 2000, 2003, 2004, 2008-2009 Free Software Foundation, Inc.
+   Copyright (C) 2000, 2003-2004, 2008-2014 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
 
    This program is free software: you can redistribute it and/or modify
@@ -15,23 +15,24 @@
    You should have received a copy of the GNU General Public License
    along with this program.  If not, see <http://www.gnu.org/licenses/>.  */
 
-#ifndef _GL_SPAWN_H
+#ifndef _@GUARD_PREFIX@_SPAWN_H
 
 #if __GNUC__ >= 3
 @PRAGMA_SYSTEM_HEADER@
 #endif
+@PRAGMA_COLUMNS@
 
 /* The include_next requires a split double-inclusion guard.  */
 #if @HAVE_SPAWN_H@
 # @INCLUDE_NEXT@ @NEXT_SPAWN_H@
 #endif
 
-#ifndef _GL_SPAWN_H
-#define _GL_SPAWN_H
+#ifndef _@GUARD_PREFIX@_SPAWN_H
+#define _@GUARD_PREFIX@_SPAWN_H
 
 /* Get definitions of 'struct sched_param' and 'sigset_t'.
    But avoid namespace pollution on glibc systems.  */
-#ifndef __GLIBC__
+#if !(defined __GLIBC__ && !defined __UCLIBC__)
 # include <sched.h>
 # include <signal.h>
 #endif
@@ -62,7 +63,7 @@
 #ifndef _Restrict_arr_
 # if ((199901L <= __STDC_VERSION__                                      \
        || ((3 < __GNUC__ || (3 == __GNUC__ && 1 <= __GNUC_MINOR__))     \
-           && !__STRICT_ANSI__))                                        \
+           && !defined __STRICT_ANSI__))                                        \
       && !defined __GNUG__)
 #  define _Restrict_arr_ _Restrict_
 # else
@@ -70,16 +71,19 @@
 # endif
 #endif
 
-/* The definition of GL_LINK_WARNING is copied here.  */
+/* The definitions of _GL_FUNCDECL_RPL etc. are copied here.  */
 
 /* The definition of _GL_ARG_NONNULL is copied here.  */
 
+/* The definition of _GL_WARN_ON_USE is copied here.  */
+
 
 /* Data structure to contain attributes for thread creation.  */
 #if @REPLACE_POSIX_SPAWN@
 # define posix_spawnattr_t rpl_posix_spawnattr_t
 #endif
 #if @REPLACE_POSIX_SPAWN@ || !@HAVE_POSIX_SPAWNATTR_T@
+# if !GNULIB_defined_posix_spawnattr_t
 typedef struct
 {
   short int _flags;
@@ -90,6 +94,8 @@ typedef struct
   int _policy;
   int __pad[16];
 } posix_spawnattr_t;
+#  define GNULIB_defined_posix_spawnattr_t 1
+# endif
 #endif
 
 
@@ -99,6 +105,7 @@ typedef struct
 # define posix_spawn_file_actions_t rpl_posix_spawn_file_actions_t
 #endif
 #if @REPLACE_POSIX_SPAWN@ || !@HAVE_POSIX_SPAWN_FILE_ACTIONS_T@
+# if !GNULIB_defined_posix_spawn_file_actions_t
 typedef struct
 {
   int _allocated;
@@ -106,40 +113,54 @@ typedef struct
   struct __spawn_action *_actions;
   int __pad[16];
 } posix_spawn_file_actions_t;
+#  define GNULIB_defined_posix_spawn_file_actions_t 1
+# endif
 #endif
 
 
-/* Flags to be set in the `posix_spawnattr_t'.  */
-#if @REPLACE_POSIX_SPAWN@
+/* Flags to be set in the 'posix_spawnattr_t'.  */
+#if @HAVE_POSIX_SPAWN@
+/* Use the values from the system, but provide the missing ones.  */
+# ifndef POSIX_SPAWN_SETSCHEDPARAM
+#  define POSIX_SPAWN_SETSCHEDPARAM 0
+# endif
+# ifndef POSIX_SPAWN_SETSCHEDULER
+#  define POSIX_SPAWN_SETSCHEDULER 0
+# endif
+#else
+# if @REPLACE_POSIX_SPAWN@
 /* Use the values from the system, for better compatibility.  */
 /* But this implementation does not support AIX extensions.  */
-# undef POSIX_SPAWN_FORK_HANDLERS
-#else
-# define POSIX_SPAWN_RESETIDS           0x01
-# define POSIX_SPAWN_SETPGROUP          0x02
-# define POSIX_SPAWN_SETSIGDEF          0x04
-# define POSIX_SPAWN_SETSIGMASK         0x08
-# define POSIX_SPAWN_SETSCHEDPARAM      0x10
-# define POSIX_SPAWN_SETSCHEDULER       0x20
+#  undef POSIX_SPAWN_FORK_HANDLERS
+# else
+#  define POSIX_SPAWN_RESETIDS           0x01
+#  define POSIX_SPAWN_SETPGROUP          0x02
+#  define POSIX_SPAWN_SETSIGDEF          0x04
+#  define POSIX_SPAWN_SETSIGMASK         0x08
+#  define POSIX_SPAWN_SETSCHEDPARAM      0x10
+#  define POSIX_SPAWN_SETSCHEDULER       0x20
+# endif
 #endif
 /* A GNU extension.  Use the next free bit position.  */
 #define POSIX_SPAWN_USEVFORK \
-  ((POSIX_SPAWN_RESETIDS | (POSIX_SPAWN_RESETIDS - 1)                   \
-    | POSIX_SPAWN_SETPGROUP | (POSIX_SPAWN_SETPGROUP - 1)               \
-    | POSIX_SPAWN_SETSIGDEF | (POSIX_SPAWN_SETSIGDEF - 1)               \
-    | POSIX_SPAWN_SETSIGMASK | (POSIX_SPAWN_SETSIGMASK - 1)             \
-    | POSIX_SPAWN_SETSCHEDPARAM | (POSIX_SPAWN_SETSCHEDPARAM - 1)       \
-    | POSIX_SPAWN_SETSCHEDULER | (POSIX_SPAWN_SETSCHEDULER - 1))        \
+  ((POSIX_SPAWN_RESETIDS | (POSIX_SPAWN_RESETIDS - 1)                     \
+    | POSIX_SPAWN_SETPGROUP | (POSIX_SPAWN_SETPGROUP - 1)                 \
+    | POSIX_SPAWN_SETSIGDEF | (POSIX_SPAWN_SETSIGDEF - 1)                 \
+    | POSIX_SPAWN_SETSIGMASK | (POSIX_SPAWN_SETSIGMASK - 1)               \
+    | POSIX_SPAWN_SETSCHEDPARAM                                           \
+    | (POSIX_SPAWN_SETSCHEDPARAM > 0 ? POSIX_SPAWN_SETSCHEDPARAM - 1 : 0) \
+    | POSIX_SPAWN_SETSCHEDULER                                            \
+    | (POSIX_SPAWN_SETSCHEDULER > 0 ? POSIX_SPAWN_SETSCHEDULER - 1 : 0))  \
    + 1)
+#if !GNULIB_defined_verify_POSIX_SPAWN_USEVFORK_no_overlap
 typedef int verify_POSIX_SPAWN_USEVFORK_no_overlap
-            [2 * (((POSIX_SPAWN_RESETIDS | POSIX_SPAWN_SETPGROUP
-                    | POSIX_SPAWN_SETSIGDEF | POSIX_SPAWN_SETSIGMASK
-                    | POSIX_SPAWN_SETSCHEDPARAM | POSIX_SPAWN_SETSCHEDULER)
-                   & POSIX_SPAWN_USEVFORK) == 0) - 1];
-
-
-#ifdef __cplusplus
-extern "C" {
+            [(((POSIX_SPAWN_RESETIDS | POSIX_SPAWN_SETPGROUP
+                | POSIX_SPAWN_SETSIGDEF | POSIX_SPAWN_SETSIGMASK
+                | POSIX_SPAWN_SETSCHEDPARAM | POSIX_SPAWN_SETSCHEDULER)
+               & POSIX_SPAWN_USEVFORK)
+              == 0)
+             ? 1 : -1];
+# define GNULIB_defined_verify_POSIX_SPAWN_USEVFORK_no_overlap 1
 #endif
 
 
@@ -150,399 +171,711 @@ extern "C" {
    This function is a possible cancellation points and therefore not
    marked with __THROW. */
 # if @REPLACE_POSIX_SPAWN@
-#  define posix_spawn rpl_posix_spawn
-# endif
-# if !@HAVE_POSIX_SPAWN@ || @REPLACE_POSIX_SPAWN@
-extern int posix_spawn (pid_t *_Restrict_ __pid,
-                        const char *_Restrict_ __path,
-                        const posix_spawn_file_actions_t *_Restrict_ __file_actions,
-                        const posix_spawnattr_t *_Restrict_ __attrp,
-                        char *const argv[_Restrict_arr_],
-                        char *const envp[_Restrict_arr_])
-     _GL_ARG_NONNULL ((2, 5, 6));
-# endif
+#  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+#   define posix_spawn rpl_posix_spawn
+#  endif
+_GL_FUNCDECL_RPL (posix_spawn, int,
+                  (pid_t *_Restrict_ __pid,
+                   const char *_Restrict_ __path,
+                   const posix_spawn_file_actions_t *_Restrict_ __file_actions,
+                   const posix_spawnattr_t *_Restrict_ __attrp,
+                   char *const argv[_Restrict_arr_],
+                   char *const envp[_Restrict_arr_])
+                  _GL_ARG_NONNULL ((2, 5, 6)));
+_GL_CXXALIAS_RPL (posix_spawn, int,
+                  (pid_t *_Restrict_ __pid,
+                   const char *_Restrict_ __path,
+                   const posix_spawn_file_actions_t *_Restrict_ __file_actions,
+                   const posix_spawnattr_t *_Restrict_ __attrp,
+                   char *const argv[_Restrict_arr_],
+                   char *const envp[_Restrict_arr_]));
+# else
+#  if !@HAVE_POSIX_SPAWN@
+_GL_FUNCDECL_SYS (posix_spawn, int,
+                  (pid_t *_Restrict_ __pid,
+                   const char *_Restrict_ __path,
+                   const posix_spawn_file_actions_t *_Restrict_ __file_actions,
+                   const posix_spawnattr_t *_Restrict_ __attrp,
+                   char *const argv[_Restrict_arr_],
+                   char *const envp[_Restrict_arr_])
+                  _GL_ARG_NONNULL ((2, 5, 6)));
+#  endif
+_GL_CXXALIAS_SYS (posix_spawn, int,
+                  (pid_t *_Restrict_ __pid,
+                   const char *_Restrict_ __path,
+                   const posix_spawn_file_actions_t *_Restrict_ __file_actions,
+                   const posix_spawnattr_t *_Restrict_ __attrp,
+                   char *const argv[_Restrict_arr_],
+                   char *const envp[_Restrict_arr_]));
+# endif
+_GL_CXXALIASWARN (posix_spawn);
 #elif defined GNULIB_POSIXCHECK
 # undef posix_spawn
-# define posix_spawn(a,b,c,d,e,f)                   \
-  (GL_LINK_WARNING ("posix_spawn is unportable - "        \
-                    "use gnulib module posix_spawn for portability"),   \
-   posix_spawn (a, b, c, d, e, f))
+# if HAVE_RAW_DECL_POSIX_SPAWN
+_GL_WARN_ON_USE (posix_spawn, "posix_spawn is unportable - "
+                 "use gnulib module posix_spawn for portability");
+# endif
 #endif
 
 #if @GNULIB_POSIX_SPAWNP@
-/* Similar to `posix_spawn' but search for FILE in the PATH.
+/* Similar to 'posix_spawn' but search for FILE in the PATH.
 
    This function is a possible cancellation points and therefore not
    marked with __THROW.  */
 # if @REPLACE_POSIX_SPAWN@
-#  define posix_spawnp rpl_posix_spawnp
-# endif
-# if !@HAVE_POSIX_SPAWN@ || @REPLACE_POSIX_SPAWN@
-extern int posix_spawnp (pid_t *__pid, const char *__file,
-                         const posix_spawn_file_actions_t *__file_actions,
-                         const posix_spawnattr_t *__attrp,
-                         char *const argv[], char *const envp[])
-     _GL_ARG_NONNULL ((2, 5, 6));
-# endif
+#  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+#   define posix_spawnp rpl_posix_spawnp
+#  endif
+_GL_FUNCDECL_RPL (posix_spawnp, int,
+                  (pid_t *__pid, const char *__file,
+                   const posix_spawn_file_actions_t *__file_actions,
+                   const posix_spawnattr_t *__attrp,
+                   char *const argv[], char *const envp[])
+                  _GL_ARG_NONNULL ((2, 5, 6)));
+_GL_CXXALIAS_RPL (posix_spawnp, int,
+                  (pid_t *__pid, const char *__file,
+                   const posix_spawn_file_actions_t *__file_actions,
+                   const posix_spawnattr_t *__attrp,
+                   char *const argv[], char *const envp[]));
+# else
+#  if !@HAVE_POSIX_SPAWN@
+_GL_FUNCDECL_SYS (posix_spawnp, int,
+                  (pid_t *__pid, const char *__file,
+                   const posix_spawn_file_actions_t *__file_actions,
+                   const posix_spawnattr_t *__attrp,
+                   char *const argv[], char *const envp[])
+                  _GL_ARG_NONNULL ((2, 5, 6)));
+#  endif
+_GL_CXXALIAS_SYS (posix_spawnp, int,
+                  (pid_t *__pid, const char *__file,
+                   const posix_spawn_file_actions_t *__file_actions,
+                   const posix_spawnattr_t *__attrp,
+                   char *const argv[], char *const envp[]));
+# endif
+_GL_CXXALIASWARN (posix_spawnp);
 #elif defined GNULIB_POSIXCHECK
 # undef posix_spawnp
-# define posix_spawnp(a,b,c,d,e,f)                   \
-  (GL_LINK_WARNING ("posix_spawnp is unportable - "        \
-                    "use gnulib module posix_spawnp for portability"),   \
-   posix_spawnp (a, b, c, d, e, f))
+# if HAVE_RAW_DECL_POSIX_SPAWNP
+_GL_WARN_ON_USE (posix_spawnp, "posix_spawnp is unportable - "
+                 "use gnulib module posix_spawnp for portability");
+# endif
 #endif
 
 
 #if @GNULIB_POSIX_SPAWNATTR_INIT@
-/* Initialize data structure with attributes for `spawn' to default values.  */
+/* Initialize data structure with attributes for 'spawn' to default values.  */
 # if @REPLACE_POSIX_SPAWN@
-#  define posix_spawnattr_init rpl_posix_spawnattr_init
-# endif
-# if !@HAVE_POSIX_SPAWN@ || @REPLACE_POSIX_SPAWN@
-extern int posix_spawnattr_init (posix_spawnattr_t *__attr)
-     __THROW _GL_ARG_NONNULL ((1));
+#  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+#   define posix_spawnattr_init rpl_posix_spawnattr_init
+#  endif
+_GL_FUNCDECL_RPL (posix_spawnattr_init, int, (posix_spawnattr_t *__attr)
+                                             __THROW _GL_ARG_NONNULL ((1)));
+_GL_CXXALIAS_RPL (posix_spawnattr_init, int, (posix_spawnattr_t *__attr));
+# else
+#  if !@HAVE_POSIX_SPAWN@
+_GL_FUNCDECL_SYS (posix_spawnattr_init, int, (posix_spawnattr_t *__attr)
+                                             __THROW _GL_ARG_NONNULL ((1)));
+#  endif
+_GL_CXXALIAS_SYS (posix_spawnattr_init, int, (posix_spawnattr_t *__attr));
 # endif
+_GL_CXXALIASWARN (posix_spawnattr_init);
 #elif defined GNULIB_POSIXCHECK
 # undef posix_spawnattr_init
-# define posix_spawnattr_init(a)                   \
-  (GL_LINK_WARNING ("posix_spawnattr_init is unportable - "        \
-                    "use gnulib module posix_spawnattr_init for portability"), \
-   posix_spawnattr_init (a))
+# if HAVE_RAW_DECL_POSIX_SPAWNATTR_INIT
+_GL_WARN_ON_USE (posix_spawnattr_init, "posix_spawnattr_init is unportable - "
+                 "use gnulib module posix_spawnattr_init for portability");
+# endif
 #endif
 
 #if @GNULIB_POSIX_SPAWNATTR_DESTROY@
 /* Free resources associated with ATTR.  */
 # if @REPLACE_POSIX_SPAWN@
-#  define posix_spawnattr_destroy rpl_posix_spawnattr_destroy
-# endif
-# if !@HAVE_POSIX_SPAWN@ || @REPLACE_POSIX_SPAWN@
-extern int posix_spawnattr_destroy (posix_spawnattr_t *__attr)
-     __THROW _GL_ARG_NONNULL ((1));
+#  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+#   define posix_spawnattr_destroy rpl_posix_spawnattr_destroy
+#  endif
+_GL_FUNCDECL_RPL (posix_spawnattr_destroy, int, (posix_spawnattr_t *__attr)
+                                                __THROW _GL_ARG_NONNULL ((1)));
+_GL_CXXALIAS_RPL (posix_spawnattr_destroy, int, (posix_spawnattr_t *__attr));
+# else
+#  if !@HAVE_POSIX_SPAWN@
+_GL_FUNCDECL_SYS (posix_spawnattr_destroy, int, (posix_spawnattr_t *__attr)
+                                                __THROW _GL_ARG_NONNULL ((1)));
+#  endif
+_GL_CXXALIAS_SYS (posix_spawnattr_destroy, int, (posix_spawnattr_t *__attr));
 # endif
+_GL_CXXALIASWARN (posix_spawnattr_destroy);
 #elif defined GNULIB_POSIXCHECK
 # undef posix_spawnattr_destroy
-# define posix_spawnattr_destroy(a)                   \
-  (GL_LINK_WARNING ("posix_spawnattr_destroy is unportable - "        \
-                    "use gnulib module posix_spawnattr_destroy for portability"), \
-   posix_spawnattr_destroy (a))
+# if HAVE_RAW_DECL_POSIX_SPAWNATTR_DESTROY
+_GL_WARN_ON_USE (posix_spawnattr_destroy,
+                 "posix_spawnattr_destroy is unportable - "
+                 "use gnulib module posix_spawnattr_destroy for portability");
+# endif
 #endif
 
 #if @GNULIB_POSIX_SPAWNATTR_GETSIGDEFAULT@
 /* Store signal mask for signals with default handling from ATTR in
    SIGDEFAULT.  */
 # if @REPLACE_POSIX_SPAWN@
-#  define posix_spawnattr_getsigdefault rpl_posix_spawnattr_getsigdefault
-# endif
-# if !@HAVE_POSIX_SPAWN@ || @REPLACE_POSIX_SPAWN@
-extern int posix_spawnattr_getsigdefault (const posix_spawnattr_t *_Restrict_ __attr,
-                                          sigset_t *_Restrict_ __sigdefault)
-     __THROW _GL_ARG_NONNULL ((1, 2));
-# endif
+#  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+#   define posix_spawnattr_getsigdefault rpl_posix_spawnattr_getsigdefault
+#  endif
+_GL_FUNCDECL_RPL (posix_spawnattr_getsigdefault, int,
+                  (const posix_spawnattr_t *_Restrict_ __attr,
+                   sigset_t *_Restrict_ __sigdefault)
+                  __THROW _GL_ARG_NONNULL ((1, 2)));
+_GL_CXXALIAS_RPL (posix_spawnattr_getsigdefault, int,
+                  (const posix_spawnattr_t *_Restrict_ __attr,
+                   sigset_t *_Restrict_ __sigdefault));
+# else
+#  if !@HAVE_POSIX_SPAWN@
+_GL_FUNCDECL_SYS (posix_spawnattr_getsigdefault, int,
+                  (const posix_spawnattr_t *_Restrict_ __attr,
+                   sigset_t *_Restrict_ __sigdefault)
+                  __THROW _GL_ARG_NONNULL ((1, 2)));
+#  endif
+_GL_CXXALIAS_SYS (posix_spawnattr_getsigdefault, int,
+                  (const posix_spawnattr_t *_Restrict_ __attr,
+                   sigset_t *_Restrict_ __sigdefault));
+# endif
+_GL_CXXALIASWARN (posix_spawnattr_getsigdefault);
 #elif defined GNULIB_POSIXCHECK
 # undef posix_spawnattr_getsigdefault
-# define posix_spawnattr_getsigdefault(a, b)                         \
-  (GL_LINK_WARNING ("posix_spawnattr_getsigdefault is unportable - "        \
-                    "use gnulib module posix_spawnattr_getsigdefault for portability"), \
-   posix_spawnattr_getsigdefault (a, b))
+# if HAVE_RAW_DECL_POSIX_SPAWNATTR_GETSIGDEFAULT
+_GL_WARN_ON_USE (posix_spawnattr_getsigdefault,
+                 "posix_spawnattr_getsigdefault is unportable - "
+                 "use gnulib module posix_spawnattr_getsigdefault for portability");
+# endif
 #endif
 
 #if @GNULIB_POSIX_SPAWNATTR_SETSIGDEFAULT@
 /* Set signal mask for signals with default handling in ATTR to SIGDEFAULT.  */
 # if @REPLACE_POSIX_SPAWN@
-#  define posix_spawnattr_setsigdefault rpl_posix_spawnattr_setsigdefault
-# endif
-# if !@HAVE_POSIX_SPAWN@ || @REPLACE_POSIX_SPAWN@
-extern int posix_spawnattr_setsigdefault (posix_spawnattr_t *_Restrict_ __attr,
-                                          const sigset_t *_Restrict_ __sigdefault)
-     __THROW _GL_ARG_NONNULL ((1, 2));
-# endif
+#  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+#   define posix_spawnattr_setsigdefault rpl_posix_spawnattr_setsigdefault
+#  endif
+_GL_FUNCDECL_RPL (posix_spawnattr_setsigdefault, int,
+                  (posix_spawnattr_t *_Restrict_ __attr,
+                   const sigset_t *_Restrict_ __sigdefault)
+                  __THROW _GL_ARG_NONNULL ((1, 2)));
+_GL_CXXALIAS_RPL (posix_spawnattr_setsigdefault, int,
+                  (posix_spawnattr_t *_Restrict_ __attr,
+                   const sigset_t *_Restrict_ __sigdefault));
+# else
+#  if !@HAVE_POSIX_SPAWN@
+_GL_FUNCDECL_SYS (posix_spawnattr_setsigdefault, int,
+                  (posix_spawnattr_t *_Restrict_ __attr,
+                   const sigset_t *_Restrict_ __sigdefault)
+                  __THROW _GL_ARG_NONNULL ((1, 2)));
+#  endif
+_GL_CXXALIAS_SYS (posix_spawnattr_setsigdefault, int,
+                  (posix_spawnattr_t *_Restrict_ __attr,
+                   const sigset_t *_Restrict_ __sigdefault));
+# endif
+_GL_CXXALIASWARN (posix_spawnattr_setsigdefault);
 #elif defined GNULIB_POSIXCHECK
 # undef posix_spawnattr_setsigdefault
-# define posix_spawnattr_setsigdefault(a, b)                         \
-  (GL_LINK_WARNING ("posix_spawnattr_setsigdefault is unportable - "        \
-                    "use gnulib module posix_spawnattr_setsigdefault for portability"), \
-   posix_spawnattr_setsigdefault (a, b))
+# if HAVE_RAW_DECL_POSIX_SPAWNATTR_SETSIGDEFAULT
+_GL_WARN_ON_USE (posix_spawnattr_setsigdefault,
+                 "posix_spawnattr_setsigdefault is unportable - "
+                 "use gnulib module posix_spawnattr_setsigdefault for portability");
+# endif
 #endif
 
 #if @GNULIB_POSIX_SPAWNATTR_GETSIGMASK@
 /* Store signal mask for the new process from ATTR in SIGMASK.  */
 # if @REPLACE_POSIX_SPAWN@
-#  define posix_spawnattr_getsigmask rpl_posix_spawnattr_getsigmask
-# endif
-# if !@HAVE_POSIX_SPAWN@ || @REPLACE_POSIX_SPAWN@
-extern int posix_spawnattr_getsigmask (const posix_spawnattr_t *_Restrict_ __attr,
-                                       sigset_t *_Restrict_ __sigmask)
-     __THROW _GL_ARG_NONNULL ((1, 2));
-# endif
+#  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+#   define posix_spawnattr_getsigmask rpl_posix_spawnattr_getsigmask
+#  endif
+_GL_FUNCDECL_RPL (posix_spawnattr_getsigmask, int,
+                  (const posix_spawnattr_t *_Restrict_ __attr,
+                   sigset_t *_Restrict_ __sigmask)
+                  __THROW _GL_ARG_NONNULL ((1, 2)));
+_GL_CXXALIAS_RPL (posix_spawnattr_getsigmask, int,
+                  (const posix_spawnattr_t *_Restrict_ __attr,
+                   sigset_t *_Restrict_ __sigmask));
+# else
+#  if !@HAVE_POSIX_SPAWN@
+_GL_FUNCDECL_SYS (posix_spawnattr_getsigmask, int,
+                  (const posix_spawnattr_t *_Restrict_ __attr,
+                   sigset_t *_Restrict_ __sigmask)
+                  __THROW _GL_ARG_NONNULL ((1, 2)));
+#  endif
+_GL_CXXALIAS_SYS (posix_spawnattr_getsigmask, int,
+                  (const posix_spawnattr_t *_Restrict_ __attr,
+                   sigset_t *_Restrict_ __sigmask));
+# endif
+_GL_CXXALIASWARN (posix_spawnattr_getsigmask);
 #elif defined GNULIB_POSIXCHECK
 # undef posix_spawnattr_getsigmask
-# define posix_spawnattr_getsigmask(a, b)                         \
-  (GL_LINK_WARNING ("posix_spawnattr_getsigmask is unportable - "        \
-                    "use gnulib module posix_spawnattr_getsigmask for portability"), \
-   posix_spawnattr_getsigmask (a, b))
+# if HAVE_RAW_DECL_POSIX_SPAWNATTR_GETSIGMASK
+_GL_WARN_ON_USE (posix_spawnattr_getsigmask,
+                 "posix_spawnattr_getsigmask is unportable - "
+                 "use gnulib module posix_spawnattr_getsigmask for portability");
+# endif
 #endif
 
 #if @GNULIB_POSIX_SPAWNATTR_SETSIGMASK@
 /* Set signal mask for the new process in ATTR to SIGMASK.  */
 # if @REPLACE_POSIX_SPAWN@
-#  define posix_spawnattr_setsigmask rpl_posix_spawnattr_setsigmask
-# endif
-# if !@HAVE_POSIX_SPAWN@ || @REPLACE_POSIX_SPAWN@
-extern int posix_spawnattr_setsigmask (posix_spawnattr_t *_Restrict_ __attr,
-                                       const sigset_t *_Restrict_ __sigmask)
-     __THROW _GL_ARG_NONNULL ((1, 2));
-# endif
+#  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+#   define posix_spawnattr_setsigmask rpl_posix_spawnattr_setsigmask
+#  endif
+_GL_FUNCDECL_RPL (posix_spawnattr_setsigmask, int,
+                  (posix_spawnattr_t *_Restrict_ __attr,
+                   const sigset_t *_Restrict_ __sigmask)
+                  __THROW _GL_ARG_NONNULL ((1, 2)));
+_GL_CXXALIAS_RPL (posix_spawnattr_setsigmask, int,
+                  (posix_spawnattr_t *_Restrict_ __attr,
+                   const sigset_t *_Restrict_ __sigmask));
+# else
+#  if !@HAVE_POSIX_SPAWN@
+_GL_FUNCDECL_SYS (posix_spawnattr_setsigmask, int,
+                  (posix_spawnattr_t *_Restrict_ __attr,
+                   const sigset_t *_Restrict_ __sigmask)
+                  __THROW _GL_ARG_NONNULL ((1, 2)));
+#  endif
+_GL_CXXALIAS_SYS (posix_spawnattr_setsigmask, int,
+                  (posix_spawnattr_t *_Restrict_ __attr,
+                   const sigset_t *_Restrict_ __sigmask));
+# endif
+_GL_CXXALIASWARN (posix_spawnattr_setsigmask);
 #elif defined GNULIB_POSIXCHECK
 # undef posix_spawnattr_setsigmask
-# define posix_spawnattr_setsigmask(a, b)                         \
-  (GL_LINK_WARNING ("posix_spawnattr_setsigmask is unportable - "        \
-                    "use gnulib module posix_spawnattr_setsigmask for portability"), \
-   posix_spawnattr_setsigmask (a, b))
+# if HAVE_RAW_DECL_POSIX_SPAWNATTR_SETSIGMASK
+_GL_WARN_ON_USE (posix_spawnattr_setsigmask,
+                 "posix_spawnattr_setsigmask is unportable - "
+                 "use gnulib module posix_spawnattr_setsigmask for portability");
+# endif
 #endif
 
 #if @GNULIB_POSIX_SPAWNATTR_GETFLAGS@
 /* Get flag word from the attribute structure.  */
 # if @REPLACE_POSIX_SPAWN@
-#  define posix_spawnattr_getflags rpl_posix_spawnattr_getflags
-# endif
-# if !@HAVE_POSIX_SPAWN@ || @REPLACE_POSIX_SPAWN@
-extern int posix_spawnattr_getflags (const posix_spawnattr_t *_Restrict_ __attr,
-                                     short int *_Restrict_ __flags)
-     __THROW _GL_ARG_NONNULL ((1, 2));
-# endif
+#  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+#   define posix_spawnattr_getflags rpl_posix_spawnattr_getflags
+#  endif
+_GL_FUNCDECL_RPL (posix_spawnattr_getflags, int,
+                  (const posix_spawnattr_t *_Restrict_ __attr,
+                   short int *_Restrict_ __flags)
+                  __THROW _GL_ARG_NONNULL ((1, 2)));
+_GL_CXXALIAS_RPL (posix_spawnattr_getflags, int,
+                  (const posix_spawnattr_t *_Restrict_ __attr,
+                   short int *_Restrict_ __flags));
+# else
+#  if !@HAVE_POSIX_SPAWN@
+_GL_FUNCDECL_SYS (posix_spawnattr_getflags, int,
+                  (const posix_spawnattr_t *_Restrict_ __attr,
+                   short int *_Restrict_ __flags)
+                  __THROW _GL_ARG_NONNULL ((1, 2)));
+#  endif
+_GL_CXXALIAS_SYS (posix_spawnattr_getflags, int,
+                  (const posix_spawnattr_t *_Restrict_ __attr,
+                   short int *_Restrict_ __flags));
+# endif
+_GL_CXXALIASWARN (posix_spawnattr_getflags);
 #elif defined GNULIB_POSIXCHECK
 # undef posix_spawnattr_getflags
-# define posix_spawnattr_getflags(a, b)                         \
-  (GL_LINK_WARNING ("posix_spawnattr_getflags is unportable - "        \
-                    "use gnulib module posix_spawnattr_getflags for portability"), \
-   posix_spawnattr_getsigdefault (a, b))
+# if HAVE_RAW_DECL_POSIX_SPAWNATTR_GETFLAGS
+_GL_WARN_ON_USE (posix_spawnattr_getflags,
+                 "posix_spawnattr_getflags is unportable - "
+                 "use gnulib module posix_spawnattr_getflags for portability");
+# endif
 #endif
 
 #if @GNULIB_POSIX_SPAWNATTR_SETFLAGS@
 /* Store flags in the attribute structure.  */
 # if @REPLACE_POSIX_SPAWN@
-#  define posix_spawnattr_setflags rpl_posix_spawnattr_setflags
-# endif
-# if !@HAVE_POSIX_SPAWN@ || @REPLACE_POSIX_SPAWN@
-extern int posix_spawnattr_setflags (posix_spawnattr_t *__attr,
-                                     short int __flags)
-     __THROW _GL_ARG_NONNULL ((1));
-# endif
+#  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+#   define posix_spawnattr_setflags rpl_posix_spawnattr_setflags
+#  endif
+_GL_FUNCDECL_RPL (posix_spawnattr_setflags, int,
+                  (posix_spawnattr_t *__attr, short int __flags)
+                  __THROW _GL_ARG_NONNULL ((1)));
+_GL_CXXALIAS_RPL (posix_spawnattr_setflags, int,
+                  (posix_spawnattr_t *__attr, short int __flags));
+# else
+#  if !@HAVE_POSIX_SPAWN@
+_GL_FUNCDECL_SYS (posix_spawnattr_setflags, int,
+                  (posix_spawnattr_t *__attr, short int __flags)
+                  __THROW _GL_ARG_NONNULL ((1)));
+#  endif
+_GL_CXXALIAS_SYS (posix_spawnattr_setflags, int,
+                  (posix_spawnattr_t *__attr, short int __flags));
+# endif
+_GL_CXXALIASWARN (posix_spawnattr_setflags);
 #elif defined GNULIB_POSIXCHECK
 # undef posix_spawnattr_setflags
-# define posix_spawnattr_setflags(a, b)                         \
-  (GL_LINK_WARNING ("posix_spawnattr_setflags is unportable - "        \
-                    "use gnulib module posix_spawnattr_setflags for portability"), \
-   posix_spawnattr_getflags (a, b))
+# if HAVE_RAW_DECL_POSIX_SPAWNATTR_SETFLAGS
+_GL_WARN_ON_USE (posix_spawnattr_setflags,
+                 "posix_spawnattr_setflags is unportable - "
+                 "use gnulib module posix_spawnattr_setflags for portability");
+# endif
 #endif
 
 #if @GNULIB_POSIX_SPAWNATTR_GETPGROUP@
 /* Get process group ID from the attribute structure.  */
 # if @REPLACE_POSIX_SPAWN@
-#  define posix_spawnattr_getpgroup rpl_posix_spawnattr_getpgroup
-# endif
-# if !@HAVE_POSIX_SPAWN@ || @REPLACE_POSIX_SPAWN@
-extern int posix_spawnattr_getpgroup (const posix_spawnattr_t *_Restrict_ __attr,
-                                      pid_t *_Restrict_ __pgroup)
-     __THROW _GL_ARG_NONNULL ((1, 2));
-# endif
+#  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+#   define posix_spawnattr_getpgroup rpl_posix_spawnattr_getpgroup
+#  endif
+_GL_FUNCDECL_RPL (posix_spawnattr_getpgroup, int,
+                  (const posix_spawnattr_t *_Restrict_ __attr,
+                   pid_t *_Restrict_ __pgroup)
+                  __THROW _GL_ARG_NONNULL ((1, 2)));
+_GL_CXXALIAS_RPL (posix_spawnattr_getpgroup, int,
+                  (const posix_spawnattr_t *_Restrict_ __attr,
+                   pid_t *_Restrict_ __pgroup));
+# else
+#  if !@HAVE_POSIX_SPAWN@
+_GL_FUNCDECL_SYS (posix_spawnattr_getpgroup, int,
+                  (const posix_spawnattr_t *_Restrict_ __attr,
+                   pid_t *_Restrict_ __pgroup)
+                  __THROW _GL_ARG_NONNULL ((1, 2)));
+#  endif
+_GL_CXXALIAS_SYS (posix_spawnattr_getpgroup, int,
+                  (const posix_spawnattr_t *_Restrict_ __attr,
+                   pid_t *_Restrict_ __pgroup));
+# endif
+_GL_CXXALIASWARN (posix_spawnattr_getpgroup);
 #elif defined GNULIB_POSIXCHECK
 # undef posix_spawnattr_getpgroup
-# define posix_spawnattr_getpgroup(a, b)                         \
-  (GL_LINK_WARNING ("posix_spawnattr_getpgroup is unportable - "        \
-                    "use gnulib module posix_spawnattr_getpgroup for portability"), \
-   posix_spawnattr_setflags (a, b))
+# if HAVE_RAW_DECL_POSIX_SPAWNATTR_GETPGROUP
+_GL_WARN_ON_USE (posix_spawnattr_getpgroup,
+                 "posix_spawnattr_getpgroup is unportable - "
+                 "use gnulib module posix_spawnattr_getpgroup for portability");
+# endif
 #endif
 
 #if @GNULIB_POSIX_SPAWNATTR_SETPGROUP@
 /* Store process group ID in the attribute structure.  */
 # if @REPLACE_POSIX_SPAWN@
-#  define posix_spawnattr_setpgroup rpl_posix_spawnattr_setpgroup
-# endif
-# if !@HAVE_POSIX_SPAWN@ || @REPLACE_POSIX_SPAWN@
-extern int posix_spawnattr_setpgroup (posix_spawnattr_t *__attr,
-                                      pid_t __pgroup)
-     __THROW _GL_ARG_NONNULL ((1));
-# endif
+#  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+#   define posix_spawnattr_setpgroup rpl_posix_spawnattr_setpgroup
+#  endif
+_GL_FUNCDECL_RPL (posix_spawnattr_setpgroup, int,
+                  (posix_spawnattr_t *__attr, pid_t __pgroup)
+                  __THROW _GL_ARG_NONNULL ((1)));
+_GL_CXXALIAS_RPL (posix_spawnattr_setpgroup, int,
+                  (posix_spawnattr_t *__attr, pid_t __pgroup));
+# else
+#  if !@HAVE_POSIX_SPAWN@
+_GL_FUNCDECL_SYS (posix_spawnattr_setpgroup, int,
+                  (posix_spawnattr_t *__attr, pid_t __pgroup)
+                  __THROW _GL_ARG_NONNULL ((1)));
+#  endif
+_GL_CXXALIAS_SYS (posix_spawnattr_setpgroup, int,
+                  (posix_spawnattr_t *__attr, pid_t __pgroup));
+# endif
+_GL_CXXALIASWARN (posix_spawnattr_setpgroup);
 #elif defined GNULIB_POSIXCHECK
 # undef posix_spawnattr_setpgroup
-# define posix_spawnattr_setpgroup(a, b)                         \
-  (GL_LINK_WARNING ("posix_spawnattr_setpgroup is unportable - "        \
-                    "use gnulib module posix_spawnattr_setpgroup for portability"), \
-   posix_spawnattr_setflags (a, b))
+# if HAVE_RAW_DECL_POSIX_SPAWNATTR_SETPGROUP
+_GL_WARN_ON_USE (posix_spawnattr_setpgroup,
+                 "posix_spawnattr_setpgroup is unportable - "
+                 "use gnulib module posix_spawnattr_setpgroup for portability");
+# endif
 #endif
 
 #if @GNULIB_POSIX_SPAWNATTR_GETSCHEDPOLICY@
 /* Get scheduling policy from the attribute structure.  */
 # if @REPLACE_POSIX_SPAWN@
-#  define posix_spawnattr_getschedpolicy rpl_posix_spawnattr_getschedpolicy
-# endif
-# if !@HAVE_POSIX_SPAWN@ || @REPLACE_POSIX_SPAWN@
-extern int posix_spawnattr_getschedpolicy (const posix_spawnattr_t *_Restrict_ __attr,
-                                           int *_Restrict_ __schedpolicy)
-     __THROW _GL_ARG_NONNULL ((1, 2));
-# endif
+#  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+#   define posix_spawnattr_getschedpolicy rpl_posix_spawnattr_getschedpolicy
+#  endif
+_GL_FUNCDECL_RPL (posix_spawnattr_getschedpolicy, int,
+                  (const posix_spawnattr_t *_Restrict_ __attr,
+                   int *_Restrict_ __schedpolicy)
+                  __THROW _GL_ARG_NONNULL ((1, 2)));
+_GL_CXXALIAS_RPL (posix_spawnattr_getschedpolicy, int,
+                  (const posix_spawnattr_t *_Restrict_ __attr,
+                   int *_Restrict_ __schedpolicy));
+# else
+#  if !@HAVE_POSIX_SPAWN@ || POSIX_SPAWN_SETSCHEDULER == 0
+_GL_FUNCDECL_SYS (posix_spawnattr_getschedpolicy, int,
+                  (const posix_spawnattr_t *_Restrict_ __attr,
+                   int *_Restrict_ __schedpolicy)
+                  __THROW _GL_ARG_NONNULL ((1, 2)));
+#  endif
+_GL_CXXALIAS_SYS (posix_spawnattr_getschedpolicy, int,
+                  (const posix_spawnattr_t *_Restrict_ __attr,
+                   int *_Restrict_ __schedpolicy));
+# endif
+_GL_CXXALIASWARN (posix_spawnattr_getschedpolicy);
 #elif defined GNULIB_POSIXCHECK
 # undef posix_spawnattr_getschedpolicy
-# define posix_spawnattr_getschedpolicy(a, b)                         \
-  (GL_LINK_WARNING ("posix_spawnattr_getschedpolicy is unportable - "        \
-                    "use gnulib module posix_spawnattr_getschedpolicy for portability"), \
-   posix_spawnattr_getschedpolicy (a, b))
+# if HAVE_RAW_DECL_POSIX_SPAWNATTR_GETSCHEDPOLICY
+_GL_WARN_ON_USE (posix_spawnattr_getschedpolicy,
+                 "posix_spawnattr_getschedpolicy is unportable - "
+                 "use gnulib module posix_spawnattr_getschedpolicy for portability");
+# endif
 #endif
 
 #if @GNULIB_POSIX_SPAWNATTR_SETSCHEDPOLICY@
 /* Store scheduling policy in the attribute structure.  */
 # if @REPLACE_POSIX_SPAWN@
-#  define posix_spawnattr_setschedpolicy rpl_posix_spawnattr_setschedpolicy
-# endif
-# if !@HAVE_POSIX_SPAWN@ || @REPLACE_POSIX_SPAWN@
-extern int posix_spawnattr_setschedpolicy (posix_spawnattr_t *__attr,
-                                           int __schedpolicy)
-     __THROW _GL_ARG_NONNULL ((1));
-# endif
+#  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+#   define posix_spawnattr_setschedpolicy rpl_posix_spawnattr_setschedpolicy
+#  endif
+_GL_FUNCDECL_RPL (posix_spawnattr_setschedpolicy, int,
+                  (posix_spawnattr_t *__attr, int __schedpolicy)
+                  __THROW _GL_ARG_NONNULL ((1)));
+_GL_CXXALIAS_RPL (posix_spawnattr_setschedpolicy, int,
+                  (posix_spawnattr_t *__attr, int __schedpolicy));
+# else
+#  if !@HAVE_POSIX_SPAWN@ || POSIX_SPAWN_SETSCHEDULER == 0
+_GL_FUNCDECL_SYS (posix_spawnattr_setschedpolicy, int,
+                  (posix_spawnattr_t *__attr, int __schedpolicy)
+                  __THROW _GL_ARG_NONNULL ((1)));
+#  endif
+_GL_CXXALIAS_SYS (posix_spawnattr_setschedpolicy, int,
+                  (posix_spawnattr_t *__attr, int __schedpolicy));
+# endif
+_GL_CXXALIASWARN (posix_spawnattr_setschedpolicy);
 #elif defined GNULIB_POSIXCHECK
 # undef posix_spawnattr_setschedpolicy
-# define posix_spawnattr_setschedpolicy(a, b)                         \
-  (GL_LINK_WARNING ("posix_spawnattr_setschedpolicy is unportable - "        \
-                    "use gnulib module posix_spawnattr_setschedpolicy for portability"), \
-   posix_spawnattr_setschedpolicy (a, b))
+# if HAVE_RAW_DECL_POSIX_SPAWNATTR_SETSCHEDPOLICY
+_GL_WARN_ON_USE (posix_spawnattr_setschedpolicy,
+                 "posix_spawnattr_setschedpolicy is unportable - "
+                 "use gnulib module posix_spawnattr_setschedpolicy for portability");
+# endif
 #endif
 
 #if @GNULIB_POSIX_SPAWNATTR_GETSCHEDPARAM@
 /* Get scheduling parameters from the attribute structure.  */
 # if @REPLACE_POSIX_SPAWN@
-#  define posix_spawnattr_getschedparam rpl_posix_spawnattr_getschedparam
-# endif
-# if !@HAVE_POSIX_SPAWN@ || @REPLACE_POSIX_SPAWN@
-extern int posix_spawnattr_getschedparam (const posix_spawnattr_t *_Restrict_ __attr,
-                                          struct sched_param *_Restrict_ __schedparam)
-     __THROW _GL_ARG_NONNULL ((1, 2));
-# endif
+#  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+#   define posix_spawnattr_getschedparam rpl_posix_spawnattr_getschedparam
+#  endif
+_GL_FUNCDECL_RPL (posix_spawnattr_getschedparam, int,
+                  (const posix_spawnattr_t *_Restrict_ __attr,
+                   struct sched_param *_Restrict_ __schedparam)
+                  __THROW _GL_ARG_NONNULL ((1, 2)));
+_GL_CXXALIAS_RPL (posix_spawnattr_getschedparam, int,
+                  (const posix_spawnattr_t *_Restrict_ __attr,
+                   struct sched_param *_Restrict_ __schedparam));
+# else
+#  if !@HAVE_POSIX_SPAWN@ || POSIX_SPAWN_SETSCHEDPARAM == 0
+_GL_FUNCDECL_SYS (posix_spawnattr_getschedparam, int,
+                  (const posix_spawnattr_t *_Restrict_ __attr,
+                   struct sched_param *_Restrict_ __schedparam)
+                  __THROW _GL_ARG_NONNULL ((1, 2)));
+#  endif
+_GL_CXXALIAS_SYS (posix_spawnattr_getschedparam, int,
+                  (const posix_spawnattr_t *_Restrict_ __attr,
+                   struct sched_param *_Restrict_ __schedparam));
+# endif
+_GL_CXXALIASWARN (posix_spawnattr_getschedparam);
 #elif defined GNULIB_POSIXCHECK
 # undef posix_spawnattr_getschedparam
-# define posix_spawnattr_getschedparam(a, b)                         \
-  (GL_LINK_WARNING ("posix_spawnattr_getschedparam is unportable - "        \
-                    "use gnulib module posix_spawnattr_getschedparam for portability"), \
-   posix_spawnattr_getschedparam (a, b))
+# if HAVE_RAW_DECL_POSIX_SPAWNATTR_GETSCHEDPARAM
+_GL_WARN_ON_USE (posix_spawnattr_getschedparam,
+                 "posix_spawnattr_getschedparam is unportable - "
+                 "use gnulib module posix_spawnattr_getschedparam for portability");
+# endif
 #endif
 
 #if @GNULIB_POSIX_SPAWNATTR_SETSCHEDPARAM@
 /* Store scheduling parameters in the attribute structure.  */
 # if @REPLACE_POSIX_SPAWN@
-#  define posix_spawnattr_setschedparam rpl_posix_spawnattr_setschedparam
-# endif
-# if !@HAVE_POSIX_SPAWN@ || @REPLACE_POSIX_SPAWN@
-extern int posix_spawnattr_setschedparam (posix_spawnattr_t *_Restrict_ __attr,
-                                          const struct sched_param *_Restrict_ __schedparam)
-     __THROW _GL_ARG_NONNULL ((1, 2));
-# endif
+#  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+#   define posix_spawnattr_setschedparam rpl_posix_spawnattr_setschedparam
+#  endif
+_GL_FUNCDECL_RPL (posix_spawnattr_setschedparam, int,
+                  (posix_spawnattr_t *_Restrict_ __attr,
+                   const struct sched_param *_Restrict_ __schedparam)
+                  __THROW _GL_ARG_NONNULL ((1, 2)));
+_GL_CXXALIAS_RPL (posix_spawnattr_setschedparam, int,
+                  (posix_spawnattr_t *_Restrict_ __attr,
+                   const struct sched_param *_Restrict_ __schedparam));
+# else
+#  if !@HAVE_POSIX_SPAWN@ || POSIX_SPAWN_SETSCHEDPARAM == 0
+_GL_FUNCDECL_SYS (posix_spawnattr_setschedparam, int,
+                  (posix_spawnattr_t *_Restrict_ __attr,
+                   const struct sched_param *_Restrict_ __schedparam)
+                  __THROW _GL_ARG_NONNULL ((1, 2)));
+#  endif
+_GL_CXXALIAS_SYS (posix_spawnattr_setschedparam, int,
+                  (posix_spawnattr_t *_Restrict_ __attr,
+                   const struct sched_param *_Restrict_ __schedparam));
+# endif
+_GL_CXXALIASWARN (posix_spawnattr_setschedparam);
 #elif defined GNULIB_POSIXCHECK
 # undef posix_spawnattr_setschedparam
-# define posix_spawnattr_setschedparam(a, b)                         \
-  (GL_LINK_WARNING ("posix_spawnattr_setschedparam is unportable - "        \
-                    "use gnulib module posix_spawnattr_setschedparam for portability"), \
-   posix_spawnattr_setschedparam (a, b))
+# if HAVE_RAW_DECL_POSIX_SPAWNATTR_SETSCHEDPARAM
+_GL_WARN_ON_USE (posix_spawnattr_setschedparam,
+                 "posix_spawnattr_setschedparam is unportable - "
+                 "use gnulib module posix_spawnattr_setschedparam for portability");
+# endif
 #endif
 
 
 #if @GNULIB_POSIX_SPAWN_FILE_ACTIONS_INIT@
-/* Initialize data structure for file attribute for `spawn' call.  */
+/* Initialize data structure for file attribute for 'spawn' call.  */
 # if @REPLACE_POSIX_SPAWN@
-#  define posix_spawn_file_actions_init rpl_posix_spawn_file_actions_init
-# endif
-# if !@HAVE_POSIX_SPAWN@ || @REPLACE_POSIX_SPAWN@
-extern int posix_spawn_file_actions_init (posix_spawn_file_actions_t *__file_actions)
-     __THROW _GL_ARG_NONNULL ((1));
-# endif
+#  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+#   define posix_spawn_file_actions_init rpl_posix_spawn_file_actions_init
+#  endif
+_GL_FUNCDECL_RPL (posix_spawn_file_actions_init, int,
+                  (posix_spawn_file_actions_t *__file_actions)
+                  __THROW _GL_ARG_NONNULL ((1)));
+_GL_CXXALIAS_RPL (posix_spawn_file_actions_init, int,
+                  (posix_spawn_file_actions_t *__file_actions));
+# else
+#  if !@HAVE_POSIX_SPAWN@
+_GL_FUNCDECL_SYS (posix_spawn_file_actions_init, int,
+                  (posix_spawn_file_actions_t *__file_actions)
+                  __THROW _GL_ARG_NONNULL ((1)));
+#  endif
+_GL_CXXALIAS_SYS (posix_spawn_file_actions_init, int,
+                  (posix_spawn_file_actions_t *__file_actions));
+# endif
+_GL_CXXALIASWARN (posix_spawn_file_actions_init);
 #elif defined GNULIB_POSIXCHECK
 # undef posix_spawn_file_actions_init
-# define posix_spawn_file_actions_init(a)                         \
-  (GL_LINK_WARNING ("posix_spawn_file_actions_init is unportable - "        \
-                    "use gnulib module posix_spawn_file_actions_init for portability"), \
-   posix_spawn_file_actions_init (a))
+# if HAVE_RAW_DECL_POSIX_SPAWN_FILE_ACTIONS_INIT
+_GL_WARN_ON_USE (posix_spawn_file_actions_init,
+                 "posix_spawn_file_actions_init is unportable - "
+                 "use gnulib module posix_spawn_file_actions_init for portability");
+# endif
 #endif
 
 #if @GNULIB_POSIX_SPAWN_FILE_ACTIONS_DESTROY@
 /* Free resources associated with FILE-ACTIONS.  */
 # if @REPLACE_POSIX_SPAWN@
-#  define posix_spawn_file_actions_destroy rpl_posix_spawn_file_actions_destroy
-# endif
-# if !@HAVE_POSIX_SPAWN@ || @REPLACE_POSIX_SPAWN@
-extern int posix_spawn_file_actions_destroy (posix_spawn_file_actions_t *__file_actions)
-     __THROW _GL_ARG_NONNULL ((1));
-# endif
+#  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+#   define posix_spawn_file_actions_destroy rpl_posix_spawn_file_actions_destroy
+#  endif
+_GL_FUNCDECL_RPL (posix_spawn_file_actions_destroy, int,
+                  (posix_spawn_file_actions_t *__file_actions)
+                  __THROW _GL_ARG_NONNULL ((1)));
+_GL_CXXALIAS_RPL (posix_spawn_file_actions_destroy, int,
+                  (posix_spawn_file_actions_t *__file_actions));
+# else
+#  if !@HAVE_POSIX_SPAWN@
+_GL_FUNCDECL_SYS (posix_spawn_file_actions_destroy, int,
+                  (posix_spawn_file_actions_t *__file_actions)
+                  __THROW _GL_ARG_NONNULL ((1)));
+#  endif
+_GL_CXXALIAS_SYS (posix_spawn_file_actions_destroy, int,
+                  (posix_spawn_file_actions_t *__file_actions));
+# endif
+_GL_CXXALIASWARN (posix_spawn_file_actions_destroy);
 #elif defined GNULIB_POSIXCHECK
 # undef posix_spawn_file_actions_destroy
-# define posix_spawn_file_actions_destroy(a)                         \
-  (GL_LINK_WARNING ("posix_spawn_file_actions_destroy is unportable - "        \
-                    "use gnulib module posix_spawn_file_actions_destroy for portability"), \
-   posix_spawn_file_actions_destroy (a))
+# if HAVE_RAW_DECL_POSIX_SPAWN_FILE_ACTIONS_DESTROY
+_GL_WARN_ON_USE (posix_spawn_file_actions_destroy,
+                 "posix_spawn_file_actions_destroy is unportable - "
+                 "use gnulib module posix_spawn_file_actions_destroy for portability");
+# endif
 #endif
 
 #if @GNULIB_POSIX_SPAWN_FILE_ACTIONS_ADDOPEN@
 /* Add an action to FILE-ACTIONS which tells the implementation to call
-   `open' for the given file during the `spawn' call.  */
-# if @REPLACE_POSIX_SPAWN@
-#  define posix_spawn_file_actions_addopen rpl_posix_spawn_file_actions_addopen
-# endif
-# if !@HAVE_POSIX_SPAWN@ || @REPLACE_POSIX_SPAWN@
-extern int posix_spawn_file_actions_addopen (posix_spawn_file_actions_t *_Restrict_ __file_actions,
-                                             int __fd,
-                                             const char *_Restrict_ __path,
-                                             int __oflag, mode_t __mode)
-     __THROW _GL_ARG_NONNULL ((1, 3));
-# endif
+   'open' for the given file during the 'spawn' call.  */
+# if @REPLACE_POSIX_SPAWN_FILE_ACTIONS_ADDOPEN@
+#  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+#   define posix_spawn_file_actions_addopen rpl_posix_spawn_file_actions_addopen
+#  endif
+_GL_FUNCDECL_RPL (posix_spawn_file_actions_addopen, int,
+                  (posix_spawn_file_actions_t *_Restrict_ __file_actions,
+                   int __fd,
+                   const char *_Restrict_ __path, int __oflag, mode_t __mode)
+                  __THROW _GL_ARG_NONNULL ((1, 3)));
+_GL_CXXALIAS_RPL (posix_spawn_file_actions_addopen, int,
+                  (posix_spawn_file_actions_t *_Restrict_ __file_actions,
+                   int __fd,
+                   const char *_Restrict_ __path, int __oflag, mode_t __mode));
+# else
+#  if !@HAVE_POSIX_SPAWN@
+_GL_FUNCDECL_SYS (posix_spawn_file_actions_addopen, int,
+                  (posix_spawn_file_actions_t *_Restrict_ __file_actions,
+                   int __fd,
+                   const char *_Restrict_ __path, int __oflag, mode_t __mode)
+                  __THROW _GL_ARG_NONNULL ((1, 3)));
+#  endif
+_GL_CXXALIAS_SYS (posix_spawn_file_actions_addopen, int,
+                  (posix_spawn_file_actions_t *_Restrict_ __file_actions,
+                   int __fd,
+                   const char *_Restrict_ __path, int __oflag, mode_t __mode));
+# endif
+_GL_CXXALIASWARN (posix_spawn_file_actions_addopen);
 #elif defined GNULIB_POSIXCHECK
 # undef posix_spawn_file_actions_addopen
-# define posix_spawn_file_actions_addopen(a, b, c, d, e)                     \
-  (GL_LINK_WARNING ("posix_spawn_file_actions_addopen is unportable - "        \
-                    "use gnulib module posix_spawn_file_actions_addopen for portability"), \
-   posix_spawn_file_actions_addopen (a, b, c, d, e))
+# if HAVE_RAW_DECL_POSIX_SPAWN_FILE_ACTIONS_ADDOPEN
+_GL_WARN_ON_USE (posix_spawn_file_actions_addopen,
+                 "posix_spawn_file_actions_addopen is unportable - "
+                 "use gnulib module posix_spawn_file_actions_addopen for portability");
+# endif
 #endif
 
 #if @GNULIB_POSIX_SPAWN_FILE_ACTIONS_ADDCLOSE@
 /* Add an action to FILE-ACTIONS which tells the implementation to call
-   `close' for the given file descriptor during the `spawn' call.  */
-# if @REPLACE_POSIX_SPAWN@
-#  define posix_spawn_file_actions_addclose rpl_posix_spawn_file_actions_addclose
-# endif
-# if !@HAVE_POSIX_SPAWN@ || @REPLACE_POSIX_SPAWN@
-extern int posix_spawn_file_actions_addclose (posix_spawn_file_actions_t *__file_actions,
-                                              int __fd)
-     __THROW _GL_ARG_NONNULL ((1));
-# endif
+   'close' for the given file descriptor during the 'spawn' call.  */
+# if @REPLACE_POSIX_SPAWN_FILE_ACTIONS_ADDCLOSE@
+#  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+#   define posix_spawn_file_actions_addclose rpl_posix_spawn_file_actions_addclose
+#  endif
+_GL_FUNCDECL_RPL (posix_spawn_file_actions_addclose, int,
+                  (posix_spawn_file_actions_t *__file_actions, int __fd)
+                  __THROW _GL_ARG_NONNULL ((1)));
+_GL_CXXALIAS_RPL (posix_spawn_file_actions_addclose, int,
+                  (posix_spawn_file_actions_t *__file_actions, int __fd));
+# else
+#  if !@HAVE_POSIX_SPAWN@
+_GL_FUNCDECL_SYS (posix_spawn_file_actions_addclose, int,
+                  (posix_spawn_file_actions_t *__file_actions, int __fd)
+                  __THROW _GL_ARG_NONNULL ((1)));
+#  endif
+_GL_CXXALIAS_SYS (posix_spawn_file_actions_addclose, int,
+                  (posix_spawn_file_actions_t *__file_actions, int __fd));
+# endif
+_GL_CXXALIASWARN (posix_spawn_file_actions_addclose);
 #elif defined GNULIB_POSIXCHECK
 # undef posix_spawn_file_actions_addclose
-# define posix_spawn_file_actions_addclose(a,b)                          \
-  (GL_LINK_WARNING ("posix_spawn_file_actions_addclose is unportable - "        \
-                    "use gnulib module posix_spawn_file_actions_addclose for portability"), \
-   posix_spawn_file_actions_addclose (a, b))
+# if HAVE_RAW_DECL_POSIX_SPAWN_FILE_ACTIONS_ADDCLOSE
+_GL_WARN_ON_USE (posix_spawn_file_actions_addclose,
+                 "posix_spawn_file_actions_addclose is unportable - "
+                 "use gnulib module posix_spawn_file_actions_addclose for portability");
+# endif
 #endif
 
 #if @GNULIB_POSIX_SPAWN_FILE_ACTIONS_ADDDUP2@
 /* Add an action to FILE-ACTIONS which tells the implementation to call
-   `dup2' for the given file descriptors during the `spawn' call.  */
-# if @REPLACE_POSIX_SPAWN@
-#  define posix_spawn_file_actions_adddup2 rpl_posix_spawn_file_actions_adddup2
-# endif
-# if !@HAVE_POSIX_SPAWN@ || @REPLACE_POSIX_SPAWN@
-extern int posix_spawn_file_actions_adddup2 (posix_spawn_file_actions_t *__file_actions,
-                                             int __fd, int __newfd)
-     __THROW _GL_ARG_NONNULL ((1));
-# endif
+   'dup2' for the given file descriptors during the 'spawn' call.  */
+# if @REPLACE_POSIX_SPAWN_FILE_ACTIONS_ADDDUP2@
+#  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+#   define posix_spawn_file_actions_adddup2 rpl_posix_spawn_file_actions_adddup2
+#  endif
+_GL_FUNCDECL_RPL (posix_spawn_file_actions_adddup2, int,
+                  (posix_spawn_file_actions_t *__file_actions,
+                   int __fd, int __newfd)
+                  __THROW _GL_ARG_NONNULL ((1)));
+_GL_CXXALIAS_RPL (posix_spawn_file_actions_adddup2, int,
+                  (posix_spawn_file_actions_t *__file_actions,
+                   int __fd, int __newfd));
+# else
+#  if !@HAVE_POSIX_SPAWN@
+_GL_FUNCDECL_SYS (posix_spawn_file_actions_adddup2, int,
+                  (posix_spawn_file_actions_t *__file_actions,
+                   int __fd, int __newfd)
+                  __THROW _GL_ARG_NONNULL ((1)));
+#  endif
+_GL_CXXALIAS_SYS (posix_spawn_file_actions_adddup2, int,
+                  (posix_spawn_file_actions_t *__file_actions,
+                   int __fd, int __newfd));
+# endif
+_GL_CXXALIASWARN (posix_spawn_file_actions_adddup2);
 #elif defined GNULIB_POSIXCHECK
 # undef posix_spawn_file_actions_adddup2
-# define posix_spawn_file_actions_adddup2(a,b,c)                         \
-  (GL_LINK_WARNING ("posix_spawn_file_actions_adddup2 is unportable - "        \
-                    "use gnulib module posix_spawn_file_actions_adddup2 for portability"), \
-   posix_spawn_file_actions_adddup2 (a, b, c))
-#endif
-
-
-#ifdef __cplusplus
-}
+# if HAVE_RAW_DECL_POSIX_SPAWN_FILE_ACTIONS_ADDDUP2
+_GL_WARN_ON_USE (posix_spawn_file_actions_adddup2,
+                 "posix_spawn_file_actions_adddup2 is unportable - "
+                 "use gnulib module posix_spawn_file_actions_adddup2 for portability");
+# endif
 #endif
 
 
-#endif /* _GL_SPAWN_H */
-#endif /* _GL_SPAWN_H */
+#endif /* _@GUARD_PREFIX@_SPAWN_H */
+#endif /* _@GUARD_PREFIX@_SPAWN_H */