double spaces in string

[sheerluck]

In setup.py the line 22

polymake_cflags = conditional_decode( subprocess.check_output( [ "polymake-config", "--cflags" ] ).strip() ).split(' ')

is based on idea that $ polymake-config --cflags contains only single spaces.
I don't know how that happened, but there are two spaces between -DPOLYMAKE_WITH_FLINT and -DPOLYMAKE_DEBUG=0 on my system :(

$ ipython

In [1]: import sh

In [2]: sh.polymake_config("--cflags").find(" " * 2)
Out[2]: 558

That causes split(' ') to produce

['-DPOLYMAKE_VERSION=406',
 ...
  '-DPOLYMAKE_WITH_FLINT',
 '',                              <----------- empty string
 '-DPOLYMAKE_DEBUG=0\n']

That empty string breaks gcc.
I replaced all three split(' ') with split() and gcc is happy again.