Add simple script to search for symbols in libraries and objects

workspace_tools/syms.py

@@ -0,0 +1,57 @@
+# Utility to find which libraries could define a given symbol
+from argparse import ArgumentParser
+from os.path import join, splitext
+from os import walk
+from subprocess import Popen, PIPE
+
+
+OBJ_EXT = ['.o', '.a', '.ar']
+
+
+def find_sym_in_lib(sym, obj_path):
+    contain_symbol = False
+    
+    out = Popen(["nm", "-C", obj_path], stdout=PIPE, stderr=PIPE).communicate()[0]
+    for line in out.splitlines():
+            tokens = line.split()
+            n = len(tokens)
+            if n == 2:
+                sym_type = tokens[0]
+                sym_name = tokens[1]
+            elif n == 3:
+                sym_type = tokens[1]
+                sym_name = tokens[2]
+            else:
+                continue
+            
+            if sym_type == "U":
+                # This object is using this symbol, not defining it
+                continue
+            
+            if sym_name == sym:
+                contain_symbol = True
+    
+    return contain_symbol
+
+
+def find_sym_in_path(sym, dir_path):
+    for root, _, files in walk(dir_path):
+        for file in files:
+            
+            _, ext = splitext(file)
+            if ext not in OBJ_EXT: continue
+            
+            path = join(root, file)
+            if find_sym_in_lib(sym, path):
+                print path
+
+
+if __name__ == '__main__':
+    parser = ArgumentParser(description='Find Symbol')
+    parser.add_argument('-s', '--sym',  required=True,
+                        help='The symbol to be searched')
+    parser.add_argument('-p', '--path',  required=True,
+                        help='The path where to search')
+    args = parser.parse_args()
+    
+    find_sym_in_path(args.sym, args.path)