mirror of
https://github.com/wesnoth/wesnoth
synced 2024-09-20 07:51:33 +00:00
51 lines
1.2 KiB
Python
Executable File
51 lines
1.2 KiB
Python
Executable File
#!/usr/bin/env python3
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"""
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This script is used to detect functions in the source code which are no longer
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used. It should be used after compiling all the different executables with the
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following flags:
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CXXFLAGS += "-ffunction-sections"
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LDFLAGS += "-Wl,-gc-sections"
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It will then use nm to get all "T" symbols from all .o files generated by
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compilation, and compare those symbols to the symbols in the executables.
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Symbols not in any executable likely are unused.
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"""
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import os, glob
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def nm(filename):
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return os.popen("nm -C %s" % filename).read()
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output1 = []
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for o in glob.glob("build/release/*.o") + glob.glob("build/release/*/*.o") + \
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glob.glob("build/release/*/*/*.o") + glob.glob("build/release/*/*/*/*.o"):
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output1.append((o, nm(o)))
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output2 = nm("wesnoth")
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output2 += nm("campaignd")
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output2 += nm("wesnothd")
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def extract(line):
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return line[line.find(" T ") + 3:]
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def symbols(lines):
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return [extract(x) for x in lines.splitlines() if " T " in x]
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symbols2 = symbols(output2)
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for o in output1:
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symbols1 = symbols(o[1])
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found = []
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for symbol in symbols1:
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if not symbol in symbols2:
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found += [symbol]
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if found:
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print("%s:" % o[0])
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print("\n".join(found))
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print()
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