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databases/nss_ldap pthread_once() configure test
A very strange problem I had (people not being put into their secondary groups
on ssh login after switching LDAP to use STARTTLS) boils down to nss_ldap's
configure script failing to detect the presence of pthread_once() on NetBSD.
[It then doesn't register pthread_atfork handlers, but later doesn't manually
detect forks by PID comparison either because that logic tests on the presence
of pthread_atfork, which succeeds. Oh well.]
The test for pthread_once fails in the first place because the test program
doesn't #include <pthread.h> (which I just learnt from ws@ does clever things
to make ptherad_once() usable without linking against libpthread).
Even with #include <pthread.h>, it fails once because it does queer things
#define'ing pthread_once itself, and another time by providing a built-in
prototype differing from the real one.
With three patches, the test succeeds and the original problem disappears.
It probably doesn't matter because databases/nss_ldap is ONLY_FOR_PLATORM
NetBSD, but how to better work around the problems than my simple-minded patch
--- configure.orig 2009-11-06 11:28:08.000000000 +0100
+++ configure 2011-08-06 16:46:23.000000000 +0200
@@ -10713,9 +10713,7 @@
cat confdefs.h >>conftest.$ac_ext
cat >>conftest.$ac_ext <<_ACEOF
/* end confdefs.h. */
-/* Define $ac_func to an innocuous variant, in case <limits.h> declares
- For example, HP-UX 11i <limits.h> declares gettimeofday. */
-#define $ac_func innocuous_$ac_func
/* System header to define __stub macros and hopefully few prototypes,
which can conflict with char $ac_func (); below.
@@ -10728,16 +10726,11 @@
# include <assert.h>
/* Override any gcc2 internal prototype to avoid an error. */
-/* We use char because int might match the return type of a gcc2
- builtin and then its argument prototype would still apply. */
-char $ac_func ();
/* The GNU C library defines this for functions which it implements
to always fail with ENOSYS. Some functions are actually named
something starting with __ and the normal name is an alias. */
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