Pete Johns 4934cfa622 Wrapped variables in conditions
This allows CXX and CXXFLAGS to be overridden without patching. Added PREFIX for MacPorts compatibility, allowing staging to $(DESTDIR)$(PREFIX)/bin, leaving original behaviour unchanged.

Exit early if run in incorrect directory or if Makefile cannot be written.
2010-09-20 21:16:09 +10:00
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2010-09-20 21:16:09 +10:00
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