The IBM XL C/C++ compiler uses the following syntax to control most of its behavior, which is called a 'keyword option':
-q <option>[=<value>]
Libtool however handles this only when the option argument is immediately connected with the option ('-q') itself.

For example if I want to compile for POWER7 64-bit and optmize for code size, I would passing:
-q 64 -q arch=pwr7 -q optimize -q compact
But this will break Libtool, as it would expecting '-q64 -qarch=pwr7 -qoptimize -qcompact'.

The attached patch adds support of handling option '-q' with its option argument separated from the option itself.