Preserve the extension of shared libraries as well

emcc

@@ -239,7 +239,8 @@ if EMMAKEN_CFLAGS: CC_ADDITIONAL_ARGS += EMMAKEN_CFLAGS.split(' ')
 # ---------------- Utilities ---------------
 
 SOURCE_SUFFIXES = ('.c', '.cpp', '.cxx', '.cc')
-BITCODE_SUFFIXES = ('.bc', '.o', '.dylib', '.so', '.dll')
+BITCODE_SUFFIXES = ('.bc', '.o')
+SHAREDLIB_SUFFIXES = ('.dylib', '.so', '.dll')
 ASSEMBLY_SUFFIXES = ('.ll',)
 
 def unsuffixed(name):
@@ -377,7 +378,7 @@ try:
   for i in range(len(newargs)): # find input files XXX this a simple heuristic. we should really analyze based on a full understanding of gcc params,
                                 # right now we just assume that what is left contains no more |-x OPT| things
     arg = newargs[i]
-    if arg.endswith(SOURCE_SUFFIXES + BITCODE_SUFFIXES + ASSEMBLY_SUFFIXES) or shared.Building.is_ar(arg): # we already removed -o <target>, so all these should be inputs
+    if arg.endswith(SOURCE_SUFFIXES + BITCODE_SUFFIXES + SHAREDLIB_SUFFIXES + ASSEMBLY_SUFFIXES) or shared.Building.is_ar(arg): # we already removed -o <target>, so all these should be inputs
       newargs[i] = ''
       if os.path.exists(arg):
         if arg.endswith(SOURCE_SUFFIXES):
@@ -445,8 +446,8 @@ try:
         temp_file = in_temp(unsuffixed_basename(input_file) + '.o')
         shutil.copyfile(input_file, temp_file)
         temp_files.append(temp_file)
-      elif shared.Building.is_ar(input_file):
-        if DEBUG: print >> sys.stderr, 'emcc: copying ar file: ', input_file
+      elif input_file.endswith(SHAREDLIB_SUFFIXES) or shared.Building.is_ar(input_file):
+        if DEBUG: print >> sys.stderr, 'emcc: copying library file: ', input_file
         temp_file = in_temp(os.path.basename(input_file))
         shutil.copyfile(input_file, temp_file)
         temp_files.append(temp_file)