mklibs: handle duplicate symbols properly

git-svn-id: svn://svn.openwrt.org/openwrt/trunk@18084 3c298f89-4303-0410-b956-a3cf2f4a3e73

tools/mklibs/patches/006-duplicate_syms.patch

@@ -0,0 +1,32 @@
+--- a/src/mklibs.py
++++ b/src/mklibs.py
+@@ -507,7 +507,6 @@ while 1:
+ 
+     library_symbols = {}
+     library_symbols_used = {}
+-    symbol_provider = {}
+ 
+     # WORKAROUND: Always add libgcc on old-abi arm
+     header = elf_header(find_lib(libraries.copy().pop()))
+@@ -525,17 +524,13 @@ while 1:
+         library_symbols_used[library] = set()
+         for symbol in symbols:
+             for name in symbol.base_names():
+-                if name in symbol_provider:
+-                    debug(DEBUG_SPAM, "duplicate symbol %s in %s and %s" % (symbol, symbol_provider[name], library))
+-                else:
+-                    library_symbols[library][name] = symbol
+-                    symbol_provider[name] = library
++                library_symbols[library][name] = symbol
+ 
+     # which symbols are actually used from each lib
+     for name in needed_symbols:
+-        if name in symbol_provider:
+-            lib = symbol_provider[name]
+-            library_symbols_used[lib].add(library_symbols[lib][name])
++        for lib in libraries:
++            if name in library_symbols[lib]:
++                library_symbols_used[lib].add(library_symbols[lib][name])
+ 
+     # reduce libraries
+     for library in libraries: