pthreadpool: Only link pthreadpool against librt if we have to

This calls clock_gettime() which is available in glibc on Linux. If the
wscript in libreplace detected that librt is needed for clock_gettime()
we have to link against it.

BUG: https://bugzilla.samba.org/show_bug.cgi?id=14140

Signed-off-by: Andreas Schneider <asn@samba.org>
Signed-off-by: Isaac Boukris <iboukris@gmail.com>
Pair-Programmed-With: Isaac Boukris <iboukris@gmail.com>
Reviewed-by: Matthias Dieter Wallnöfer <mdw@samba.org>
Reviewed-by: Alexander Bokovoy <ab@samba.org>
(cherry picked from commit 4b28239d13b17e42eb5aa4b405342f46347f3de4)

diff --git a/lib/pthreadpool/wscript_build b/lib/pthreadpool/wscript_build
index 57df25548b12acceed8b16aad8fb15ade8873536..70aa7cbf04198cf245e998f47d086183da20382e 100644 (file)
--- a/lib/pthreadpool/wscript_build
+++ b/lib/pthreadpool/wscript_build
@@ -1,12 +1,17 @@
 #!/usr/bin/env python
 
 if bld.env.WITH_PTHREADPOOL:
+    extra_libs=''
+
+    # Link to librt if needed for clock_gettime()
+    if bld.CONFIG_SET('HAVE_LIBRT'): extra_libs += ' rt'
+
     bld.SAMBA_SUBSYSTEM('PTHREADPOOL',
                          source='''pthreadpool.c
                                    pthreadpool_pipe.c
                                    pthreadpool_tevent.c
                                 ''',
-                         deps='pthread rt replace tevent-util')
+                         deps='pthread replace tevent-util' + extra_libs)
 else:
     bld.SAMBA_SUBSYSTEM('PTHREADPOOL',
                          source='''pthreadpool_sync.c