m4.py
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上传日期:2018-11-18
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- """SCons.Tool.m4
- Tool-specific initialization for m4.
- There normally shouldn't be any need to import this module directly.
- It will usually be imported through the generic SCons.Tool.Tool()
- selection method.
- """
- #
- # Copyright (c) 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008 The SCons Foundation
- #
- # 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__ = "src/engine/SCons/Tool/m4.py 3057 2008/06/09 22:21:00 knight"
- import SCons.Action
- import SCons.Builder
- import SCons.Util
- def generate(env):
- """Add Builders and construction variables for m4 to an Environment."""
- M4Action = SCons.Action.Action('$M4COM', '$M4COMSTR')
- bld = SCons.Builder.Builder(action = M4Action, src_suffix = '.m4')
- env['BUILDERS']['M4'] = bld
- # .m4 files might include other files, and it would be pretty hard
- # to write a scanner for it, so let's just cd to the dir of the m4
- # file and run from there.
- # The src_suffix setup is like so: file.c.m4 -> file.c,
- # file.cpp.m4 -> file.cpp etc.
- env['M4'] = 'm4'
- env['M4FLAGS'] = SCons.Util.CLVar('-E')
- env['M4COM'] = 'cd ${SOURCE.rsrcdir} && $M4 $M4FLAGS < ${SOURCE.file} > ${TARGET.abspath}'
- def exists(env):
- return env.Detect('m4')