id summary reporter owner description type status milestone component version severity resolution keywords cc 10275 darwin.jam fails to detect installed SDK on MacOS 10.9 with XCode 5.1 installed randy du "On MacOS 10.9 / XCode 5.1, the SDKs are installed to a new location instead of ""/Developer/"": /Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/ as a result the boost's darwin.jam fails to locate the available SDKs. The following command line will output errors: ./b2 macosx-version-min=10.7 errors: tools/build/src/build/feature.jam:493: in validate-value-string from module feature error: ""10.7"" is not a known value of feature error: legal values: ... The workaround is create a soft link to new SDK location and everything works fine: cd / sudo ln -s /Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/ Developer FYI: The XCode5 installs iOS sdks under: /Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/ so darwin.jam should search both /Developer/ and these new SDK locations for installed SDKs. " Bugs new To Be Determined Building Boost Boost 1.56.0 Problem darwin.jam