[cmake] Enable debug fission only if it is supported
https://bugs.webkit.org/show_bug.cgi?id=149161

Reviewed by Martin Robinson.

* Source/cmake/OptionsCommon.cmake:


git-svn-id: http://svn.webkit.org/repository/webkit/trunk@189807 268f45cc-cd09-0410-ab3c-d52691b4dbfc
2 files changed