build: added allow_undefined_symbols options for libraries and modules

the s4 build uses linker flags to disallow undefined symbols in
libraries. To accomodate s3 libraries in the top level build we need
to be able to disable this on a per-library basis.

Pair-Programmed-With: Andrew Bartlett <abartlet@samba.org>

diff --git a/buildtools/wafsamba/samba_deps.py b/buildtools/wafsamba/samba_deps.py
index 02f23183e726223d78b12cac324baff1501e0ae0..a3968ada8360dfc26158126cdd3d1e97aa1a49f0 100644 (file)
--- a/buildtools/wafsamba/samba_deps.py
+++ b/buildtools/wafsamba/samba_deps.py
@@ -85,6 +85,10 @@ def build_dependencies(self):
         new_ldflags.extend(ldflags)
         self.ldflags       = new_ldflags
 
+        if getattr(self, 'allow_undefined_symbols', False) and self.env.undefined_ldflags:
+            for f in self.env.undefined_ldflags:
+                self.ldflags.remove(f)
+
         debug('deps: computed dependencies for target %s: uselib=%s uselib_local=%s add_objects=%s',
               self.sname, self.uselib, self.uselib_local, self.add_objects)
 
@@ -954,7 +958,7 @@ def show_object_duplicates(bld, tgt_list):
 # this provides a way to save our dependency calculations between runs
 savedeps_version = 3
 savedeps_inputs  = ['samba_deps', 'samba_includes', 'local_include', 'local_include_first', 'samba_cflags',
-                    'source', 'grouping_library', 'samba_ldflags']
+                    'source', 'grouping_library', 'samba_ldflags', 'allow_undefined_symbols' ]
 savedeps_outputs = ['uselib', 'uselib_local', 'add_objects', 'includes', 'ccflags', 'ldflags', 'samba_deps_extended']
 savedeps_outenv  = ['INC_PATHS']
 savedeps_envvars = ['NONSHARED_BINARIES', 'GLOBAL_DEPENDENCIES', 'EXTRA_CFLAGS', 'EXTRA_LDFLAGS', 'EXTRA_INCLUDES' ]

diff --git a/buildtools/wafsamba/wafsamba.py b/buildtools/wafsamba/wafsamba.py
index c04be69e505bfbbfb61ad10b32eafc14d7d3ba18..86eb730d5da819bcdac7bb8745760155842aeb13 100644 (file)
--- a/buildtools/wafsamba/wafsamba.py
+++ b/buildtools/wafsamba/wafsamba.py
@@ -124,6 +124,7 @@ def SAMBA_LIBRARY(bld, libname, source,
                   manpages=None,
                   private_library=False,
                   grouping_library=False,
+                  allow_undefined_symbols=False,
                   enabled=True):
     '''define a Samba library'''
 
@@ -245,7 +246,8 @@ def SAMBA_LIBRARY(bld, libname, source,
         abi_directory   = "%s/%s" % (bld.path.abspath(), abi_directory),
         abi_match       = abi_match,
         private_library = private_library,
-        grouping_library=grouping_library
+        grouping_library=grouping_library,
+        allow_undefined_symbols=allow_undefined_symbols
         )
 
     if realname and not link_name:
@@ -371,6 +373,7 @@ def SAMBA_MODULE(bld, modname, source,
                  vars=None,
                  enabled=True,
                  pyembed=False,
+                 allow_undefined_symbols=False
                  ):
     '''define a Samba module.'''
 
@@ -423,6 +426,7 @@ def SAMBA_MODULE(bld, modname, source,
                       link_name=build_link_name,
                       install_path="${MODULESDIR}/%s" % subsystem,
                       pyembed=pyembed,
+                      allow_undefined_symbols=allow_undefined_symbols
                       )