Update to SCons 1.2.0.

third_party/scons/scons-local/SCons/Tool/m4.py

 """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.
 
 """
 
@@ skipping 13 matching lines @@
 #
 # 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 3603 2008/10/10 05:46:45 scons"
+__revision__ = "src/engine/SCons/Tool/m4.py 3842 2008/12/20 22:59:52 scons"
 
 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')