[Scons-users] passing variables on the command-line

[Stefan Seefeld]

In my current build logic I save variables (user-provided as well as
configure-computed) to a 'config.py' file. To do this I add


  vars.Add('CPPPATH')


etc. to my SConstruct file, so these variables get properly remembered.
After running `scons` the first time (where the configure logic issues a
number of env.AddUnique(CCFLAGS='something') calls, I get this in my
config.py file:


  CPPPATH = ['/usr/include/python2.7']
  CCFLAGS = []
  LIBPATH = ['/usr/lib64']
  LIBS = []
  PYTHON = 'python'
  PYTHONLIBS = ['python2.7']


However, if I run instead something like `scons CCFLAGS=-Wall -W` the
result is


...

CCFLAGS = '-Wall -W'

...


How can I instruct SCons to transform the 'CCFLAGS' variable issued on
the command-line into a list, so the individual flags are understood
when this is passed to the compiler ?


Thanks,

        Stefan


-- 

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