"""SCons.Tool SCons tool selection. This looks for modules that define a callable object that can modify a construction environment as appropriate for a given tool (or tool chain). Note that because this subsysem just *selects* a callable that can modify a construction environment, it's possible for people to define their own "tool specification" in an arbitrary callable function. No one needs to use or tie in to this subsystem in order to roll their own tool definition. """ # # Copyright (c) 2001, 2002, 2003 Steven Knight # # Permission is hereby granted, free of charge, to any person obtaining # a copy of this software and associated documentation files (the # "Software"), to deal in the Software without restriction, including # without limitation the rights to use, copy, modify, merge, publish, # distribute, sublicense, and/or sell copies of the Software, and to # permit persons to whom the Software is furnished to do so, subject to # the following conditions: # # The above copyright notice and this permission notice shall be included # in all copies or substantial portions of the Software. # # THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY # KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE # WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND # NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE # LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION # OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION # WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. # __revision__ = "__FILE__ __REVISION__ __DATE__ __DEVELOPER__" import imp import sys import SCons.Errors import SCons.Defaults class ToolSpec: def __init__(self, name): self.name = name def __str__(self): return self.name def Tool(name, platform = None): """Select a canned Tool specification. """ full_name = 'SCons.Tool.' + name if not sys.modules.has_key(full_name): try: file, path, desc = imp.find_module(name, sys.modules['SCons.Tool'].__path__) imp.load_module(full_name, file, path, desc) except ImportError: raise SCons.Errors.UserError, "No tool named '%s'" % name if file: file.close() spec = ToolSpec(name) spec.__call__ = sys.modules[full_name].generate spec.exists = sys.modules[full_name].exists return spec def createObjBuilders(env): """This is a utility function that creates the Object and SharedObject Builders in an Environment if they are not there already. If they are there already, we return the existing ones. This is a separate function because soooo many Tools use this functionality. The return is a 2-tuple of (StaticObject, SharedObject) """ try: static_obj = env['BUILDERS']['Object'] except KeyError: static_obj = SCons.Defaults.StaticObject() env['BUILDERS']['Object'] = static_obj env['BUILDERS']['StaticObject'] = static_obj try: shared_obj = env['BUILDERS']['SharedObject'] except KeyError: shared_obj = SCons.Defaults.SharedObject() env['BUILDERS']['SharedObject'] = shared_obj return (static_obj, shared_obj) def createCFileBuilders(env): """This is a utility function that creates the CFile/CXXFile Builders in an Environment if they are not there already. If they are there already, we return the existing ones. This is a separate function because soooo many Tools use this functionality. The return is a 2-tuple of (CFile, CXXFile) """ try: c_file = env['BUILDERS']['CFile'] except KeyError: c_file = SCons.Defaults.CFile() env['BUILDERS']['CFile'] = c_file env['CFILESUFFIX'] = '.c' try: cxx_file = env['BUILDERS']['CXXFile'] except KeyError: cxx_file = SCons.Defaults.CXXFile() env['BUILDERS']['CXXFile'] = cxx_file env['CXXFILESUFFIX'] = '.cc' return (c_file, cxx_file) def FindTool(tools, env): for tool in tools: t = Tool(tool) if t.exists(env): return tool return None def FindAllTools(tools, env): def ToolExists(tool, env=env): return Tool(tool).exists(env) return filter (ToolExists, tools) def tool_list(platform, env): # XXX this logic about what tool to prefer on which platform # should be moved into either the platform files or # the tool files themselves. if str(platform) == 'win32': "prefer Microsoft tools on Windows" linkers = ['mslink', 'gnulink', 'ilink'] c_compilers = ['msvc', 'mingw', 'gcc', 'icc'] assemblers = ['masm', 'nasm', 'gas'] fortran_compilers = ['g77', 'ifl'] ars = ['mslib', 'ar'] elif str(platform) == 'os2': "prefer IBM tools on OS/2" linkers = ['ilink', 'gnulink', 'mslink'] c_compilers = ['icc', 'gcc', 'msvc'] assemblers = ['nasm', 'masm', 'gas'] fortran_compilers = ['ifl', 'g77'] ars = ['ar', 'mslib'] else: "prefer GNU tools on all other platforms" linkers = ['gnulink', 'mslink', 'ilink'] c_compilers = ['gcc', 'msvc', 'icc'] assemblers = ['gas', 'nasm', 'masm'] fortran_compilers = ['g77', 'ifl'] ars = ['ar', 'mslib'] c_compiler = FindTool(c_compilers, env) or c_compilers[0] # XXX this logic about what tool provides what should somehow be # moved into the tool files themselves. if c_compiler and c_compiler == 'mingw': # MinGW contains a linker, C compiler, C++ compiler, # Fortran compiler, archiver and assember: linker = None assembler = None fortran_compiler = None ar = None cxx_compiler = None else: linker = FindTool(linkers, env) or linkers[0] assembler = FindTool(assemblers, env) or assemblers[0] fortran_compiler = FindTool(fortran_compilers, env) or fortran_compilers[0] ar = FindTool(ars, env) or ars[0] # Don't use g++ if the C compiler has built-in C++ support: if c_compiler and (c_compiler == 'msvc' or c_compiler == 'icc'): cxx_compiler = None else: cxx_compiler = FindTool(['g++'], env) other_tools = FindAllTools(['dvipdf', 'dvips', 'latex', 'lex', 'pdflatex', 'pdftex', 'tar', 'tex', 'yacc'], env) tools = ([linker, c_compiler, cxx_compiler, fortran_compiler, assembler, ar] + other_tools) return filter(lambda x: x, tools)