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CMake 3.0.12 uses SWIG_DIR to set SWIG_LIB, used as the library install location, which defaults to $(STAGING_HOSTPKG)/share/sig/(SWIGVERSION). If it is set, then the original installed swig library directory is ignored, and compilation fails: [ 0%] Swig source :1: Error: Unable to find 'swig.swg' :3: Error: Unable to find 'python.swg' Instead of setting it manually, let the default be used, which works well. Also, cmake picks up python3, while package wants 2.7, so we add -DPython_ADDITIONAL_VERSIONS=2.7 to force use of 2.7, not 3.x. Signed-off-by: Eneas U de Queiroz <cote2004-github@yahoo.com>