Brad King c13408279f Add a variable to specify language-wide system include directories
Create a `CMAKE_<LANG>_STANDARD_INCLUDE_DIRECTORIES` variable to specify
system include directories for for `<LANG>` compiler command lines.
This plays a role for include directories as the existing
`CMAKE_<LANG>_STANDARD_LIBRARIES` variable does for link libraries.
2016-05-25 09:30:31 -04:00
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2014-09-11 08:44:20 -04:00