IntroductionThis page tries to list the OS environment variables that affect WAF behaviour. For instance, in a unix system, with a bourne shell, the variable CXX can be used to select a particular compiler, like this: CXX=/usr/bin/g++-3.3 waf configure DetailsVariables that always have effectNOCOLOR When set, color is disabled in WAF output; see also TERM.
TERM If the value of TERM is 'dumb', color is disabled in WAF output; see also NOCOLOR.
COMSPEC Only used in the win32 platform; controls the command interpreter that is used to run commands
WAFDIR Selects WAF modules installation directory.
WAFCACHE Directory to use for project configuration caching generated by WAF
WAFLOCK Name of the lock file (named '.lock-wscript' by default)
Variables that affect waf configureThese variables only have effect when running 'waf configure', and are completely ignored in 'waf build' or 'waf'. CFLAGS Selects compilation options for when the C compiler is used, e.g. "-Wall".
CXXFLAGS Selects compilation options for when the C++ compiler is used, e.g. "-Wall".
CPPFLAGS Selects C preprocessor options, e.g. "-DFOO=bar"
LINKFLAGS Extra linker options, e.g. "-L/usr/local -lsome-library"
CC The C compiler that will be used instead of the platform default. Example CC=/usr/bin/gcc-2.95
CXX The C++ compiler that will be used instead of the platform default. Example CXX=/usr/bin/g++-2.95
PREFIX The default installation prefix to be used, if no --prefix option is given.
Variables that affect waf buildThese variables only have effect when running 'waf build'. JOBS The amount of parallel jobs when building targets, if no --jobs option is given.
Variables that affect waf installThese variables only have effect when running 'waf install'. DESTDIR Used in "waf install", sets the base installation directory, i.e. a path that is used as prefix to all installation paths. This is typically in packaging to ensure that files are installed to a temporary folder during packaging even though they would normally go to a different directory under normal installation. Example:
$ DESTDIR=/tmp waf install
Compilation finished successfully
* installing build/default/foo.pyc as /tmp/usr/local/lib/python2.5/site-packages/foo.pyc
* installing foo.py as /tmp/usr/local/lib/python2.5/site-packages/foo.py
* installing build/default/foo.pyo as /tmp/usr/local/lib/python2.5/site-packages/foo.pyo
* installing build/default/spam.so as /tmp/usr/local/lib/python2.5/site-packages/spam.so
* installing build/default/test as /tmp/usr/local/bin/test
Installation finished successfully
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