Source Code for Module SCons.Scanner.Prog

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 23   
 24  __revision__ = "src/engine/SCons/Scanner/Prog.py 5110 2010/07/25 16:14:38 bdeegan" 
 25   
 26  import string 
 27   
 28  import SCons.Node 
 29  import SCons.Node.FS 
 30  import SCons.Scanner 
 31  import SCons.Util 
 32   
 33  # global, set by --debug=findlibs 
 34  print_find_libs = None 
 35   
 36 -def ProgramScanner(**kw): 
 37      """Return a prototype Scanner instance for scanning executable 
 38      files for static-lib dependencies""" 
 39      kw['path_function'] = SCons.Scanner.FindPathDirs('LIBPATH') 
 40      ps = apply(SCons.Scanner.Base, [scan, "ProgramScanner"], kw) 
 41      return ps 
 42   
 43 -def scan(node, env, libpath = ()): 
 44      """ 
 45      This scanner scans program files for static-library 
 46      dependencies.  It will search the LIBPATH environment variable 
 47      for libraries specified in the LIBS variable, returning any 
 48      files it finds as dependencies. 
 49      """ 
 50      try: 
 51          libs = env['LIBS'] 
 52      except KeyError: 
 53          # There are no LIBS in this environment, so just return a null list: 
 54          return [] 
 55      if SCons.Util.is_String(libs): 
 56          libs = string.split(libs) 
 57      else: 
 58          libs = SCons.Util.flatten(libs) 
 59   
 60      try: 
 61          prefix = env['LIBPREFIXES'] 
 62          if not SCons.Util.is_List(prefix): 
 63              prefix = [ prefix ] 
 64      except KeyError: 
 65          prefix = [ '' ] 
 66   
 67      try: 
 68          suffix = env['LIBSUFFIXES'] 
 69          if not SCons.Util.is_List(suffix): 
 70              suffix = [ suffix ] 
 71      except KeyError: 
 72          suffix = [ '' ] 
 73   
 74      pairs = [] 
 75      for suf in map(env.subst, suffix): 
 76          for pref in map(env.subst, prefix): 
 77              pairs.append((pref, suf)) 
 78   
 79      result = [] 
 80   
 81      if callable(libpath): 
 82          libpath = libpath() 
 83   
 84      find_file = SCons.Node.FS.find_file 
 85      adjustixes = SCons.Util.adjustixes 
 86      for lib in libs: 
 87          if SCons.Util.is_String(lib): 
 88              lib = env.subst(lib) 
 89              for pref, suf in pairs: 
 90                  l = adjustixes(lib, pref, suf) 
 91                  l = find_file(l, libpath, verbose=print_find_libs) 
 92                  if l: 
 93                      result.append(l) 
 94          else: 
 95              result.append(lib) 
 96   
 97      return result 
 98   
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