simgear

USE flags

• cpu_flags_x86_sse2 - Use the SSE2 instruction set
• debug - Enable extra debug codepaths, like asserts and extra output. If you want to get meaningful backtraces see https://wiki.gentoo.org/wiki/Project:Quality_Assurance/Backtraces
• dns - Enable DNS resolver via net-libs/udns
• gdal - Enable alternative terrain engine based on pagedLOD via sci-libs/gdal
• openmp - Build support for the OpenMP (support parallel computing), requires >=sys-devel/gcc-4.2 built with USE="openmp"
• subversion - Enable terrasync scenery downloader
• test - Enable dependencies and/or preparations necessary to run tests (usually controlled by FEATURES=test but can be toggled independently)