Showing content from http://svn.python.org/projects/python/branches/ctypes-branch/Tools/scripts/nm2def.py below:
#! /usr/bin/env python """nm2def.py Helpers to extract symbols from Unix libs and auto-generate Windows definition files from them. Depends on nm(1). Tested on Linux and Solaris only (-p option to nm is for Solaris only). By Marc-Andre Lemburg, Aug 1998. Additional notes: the output of nm is supposed to look like this: acceler.o: 000001fd T PyGrammar_AddAccelerators U PyGrammar_FindDFA 00000237 T PyGrammar_RemoveAccelerators U _IO_stderr_ U exit U fprintf U free U malloc U printf grammar1.o: 00000000 T PyGrammar_FindDFA 00000034 T PyGrammar_LabelRepr U _PyParser_TokenNames U abort U printf U sprintf ... Even if this isn't the default output of your nm, there is generally an option to produce this format (since it is the original v7 Unix format). """ import os,re,sys PYTHONLIB = 'libpython'+sys.version[:3]+'.a' PC_PYTHONLIB = 'Python'+sys.version[0]+sys.version[2]+'.dll' NM = 'nm -p -g %s' # For Linux, use "nm -g %s" def symbols(lib=PYTHONLIB,types=('T','C','D')): lines = os.popen(NM % lib).readlines() lines = [s.strip() for s in lines] symbols = {} for line in lines: if len(line) == 0 or ':' in line: continue items = line.split() if len(items) != 3: continue address, type, name = items if type not in types: continue symbols[name] = address,type return symbols def export_list(symbols): data = [] code = [] for name,(addr,type) in symbols.items(): if type in ('C','D'): data.append('\t'+name) else: code.append('\t'+name) data.sort() data.append('') code.sort() return ' DATA\n'.join(data)+'\n'+'\n'.join(code) # Definition file template DEF_TEMPLATE = """\ EXPORTS %s """ # Special symbols that have to be included even though they don't # pass the filter SPECIALS = ( ) def filter_Python(symbols,specials=SPECIALS): for name in symbols.keys(): if name[:2] == 'Py' or name[:3] == '_Py': pass elif name not in specials: del symbols[name] def main(): s = symbols(PYTHONLIB) filter_Python(s) exports = export_list(s) f = sys.stdout # open('PC/python_nt.def','w') f.write(DEF_TEMPLATE % (exports)) f.close() if __name__ == '__main__': main()
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