ctdb: fix compilation on systems with glibc robust mutexes

On older systems like SLES 11 without POSIX robust mutexes, but with glib robust
mutexes where all the functions are available but have a "_np" suffix,
compilation fails in:

ctdb/tests/src/test_mutex_raw.c.239.o: In function `worker':
/root/samba-4.10.6/bin/default/../../ctdb/tests/src/test_mutex_raw.c:129: undefined reference to `pthread_mutex_consistent'
ctdb/tests/src/test_mutex_raw.c.239.o: In function `main':
/root/samba-4.10.6/bin/default/../../ctdb/tests/src/test_mutex_raw.c:285: undefined reference to `pthread_mutex_consistent'
/root/samba-4.10.6/bin/default/../../ctdb/tests/src/test_mutex_raw.c:332: undefined reference to `pthread_mutexattr_setrobust'
/root/samba-4.10.6/bin/default/../../ctdb/tests/src/test_mutex_raw.c:363: undefined reference to `pthread_mutex_consistent'
collect2: ld returned 1 exit status

This could be fixed by using libreplace system/threads.h instead of pthreads.h
directly, but as there has been a desire to keep test_mutex_raw.c standalone and
compilable without other external depenencies then libc and libpthread, make the
tool developer build only. This should get the average user over the cliff.

BUG: https://bugzilla.samba.org/show_bug.cgi?id=14038
RN: Fix compiling ctdb on older systems lacking POSIX robust mutexes

Signed-off-by: Ralph Boehme <slow@samba.org>
Reviewed-by: Martin Schwenke <martin@meltin.net>
(cherry picked from commit f5388f97792ac2d7962950dad91aaf8ad49bceaa)

Autobuild-User(v4-9-test): Karolin Seeger <kseeger@samba.org>
Autobuild-Date(v4-9-test): Thu Sep  5 16:12:34 UTC 2019 on sn-devel-144

diff --git a/ctdb/wscript b/ctdb/wscript
index cbb8bd0fd19318ad8161b48fef37e7cede27f77c..2b2ed93a649529dfcf1ddd277ac0634fbbc31216 100644 (file)
--- a/ctdb/wscript
+++ b/ctdb/wscript
@@ -1026,7 +1026,7 @@ def build(bld):
                               ib_deps,
                          install_path='${CTDB_TEST_LIBEXECDIR}')
 
-    if bld.env.HAVE_ROBUST_MUTEXES and sys.platform.startswith('linux'):
+    if bld.env.HAVE_ROBUST_MUTEXES and sys.platform.startswith('linux') and bld.env.DEVELOPER:
         bld.SAMBA_BINARY('test_mutex_raw',
                          source='tests/src/test_mutex_raw.c',
                          deps='pthread',