On macOS 12.5, in a testdir for module 'execute', I'm seeing these
compilation errors:
In file included from ../../gllib/execute.c:71:
./spawn.h:692:19: error: use of undeclared identifier
'POSIX_SPAWN_SETSCHEDPARAM'
| POSIX_SPAWN_SETSCHEDPARAM | POSIX_SPAWN_SETSCHEDULER)
^
./spawn.h:692:47: error: use of undeclared identifier 'POSIX_SPAWN_SETSCHEDULER'
| POSIX_SPAWN_SETSCHEDPARAM | POSIX_SPAWN_SETSCHEDULER)
^
This patch fixes them.
2023-02-04 Bruno Haible <br...@clisp.org>
spawn: Fix compilation error on macOS (regression 2023-01-22).
* lib/spawn.in.h: Tweak logic for defining the POSIX_SPAWN_* constants.
diff --git a/lib/spawn.in.h b/lib/spawn.in.h
index 958464a7d2..b35e5d77b3 100644
--- a/lib/spawn.in.h
+++ b/lib/spawn.in.h
@@ -144,19 +144,18 @@ typedef struct
/* Flags to be set in the 'posix_spawnattr_t'. */
#if @HAVE_POSIX_SPAWN@
-# if !@REPLACE_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 /* @REPLACE_POSIX_SPAWN@ */
+# 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
# endif
+/* Provide the values that the system is lacking. */
+# ifndef POSIX_SPAWN_SETSCHEDPARAM
+# define POSIX_SPAWN_SETSCHEDPARAM 0
+# endif
+# ifndef POSIX_SPAWN_SETSCHEDULER
+# define POSIX_SPAWN_SETSCHEDULER 0
+# endif
#else /* !@HAVE_POSIX_SPAWN@ */
# define POSIX_SPAWN_RESETIDS 0x01
# define POSIX_SPAWN_SETPGROUP 0x02
