[Astrodan]

Hi everyone,

I am currently trying to adapt a solver and got annoyed by the compiler warnings regarding unused variables in readPISOControls.H, so I adapted the wmake tool to accept -isystem entries in the Make/options file and thought I'd share this here and ask other people to test it, since I'm not 100% certain my changes were sufficient.

Attached is a patch file which has to be applied to $WM_PROJECT_DIR/wmake/src/wmkdep.l. Once patched, you need to recompile wmake by executing make in $WM_PROJECT_DIR/wmake/src/.
After that you can have an Make/option file similar to

EXE_INC = \
    -isystem$(LIB_SRC)/finiteVolume/lnInclude \
    -I$(LIB_SRC)/sampling/lnInclude

EXE_LIBS = \
    -lfiniteVolume \
    -lsampling

which will avoid warnings occuring in all include files from the finiteVolume directory.

As you might have noticed, I'm working with the current git version of OF-2.3.x, so changes might be necessary for other versions (though at least for 2.x series I doubt that).