[CMake] Add_definitions() also affects RC_FLAGS ?

[Christian Ehrlicher]

Hi,

We've something like this in one of our scripts:

add_definitions(-EHsc)
and we add a .rc - file to the sources.
Now rc.exe fails because of unknown command '-EHsc' because 
add_defintions() is also dded to RC_FLAGS... :(

[ 85%] Building RC object ksirk/ksirk/CMakeFiles/ksirk.dir/ksirk.res
fatal error RC1106: invalid option: -EHsc


Any idea how to fix this?
Christian