- Added a lot more Clang flags to supress warnings, since Clang
is way much more verbose. And while there rearranged the layout.
- Move Linking flags to correct Cmake variables, so Clang does not
complain about flags that are not appropriate
- Clang/Cmake debugging: use CMAKE_CXX_FLAGS_DEBUG in buildscript
- Move Linux specifics to if-endif blocks
- -D_FILE_OFFSET_BITS=64 -D_GNU_SOURCE
Signed-off-by: Willem Jan Withagen <wjw@digiware.nl>