[CMake] Problem with Debug target options in VS8

[J.D. Yamokoski]

Greetings,

First I just want to say that I am a new cmake user and I am loving it! 
Great stuff!

On to my issue, I apologize if this is a known issue or posted before, 
but I have had some trouble with with Cmake and VS8. The error I get is 
that cmake generates two incompatible compiler options for the Debug 
target of a certain open source library. Specifically, VS complains:

cl : Command line error D8016 : '/O2' and '/RTC1' command-line options 
are incompatible

I know what those options are and why they are incompatible but what I 
don't know is whether this is a cmake problem or an issue with this 
project's cmake files. I have already talked to the developers of the 
library I am trying to compile. They state that they "only ever set 
CMAKE_BUILD_TYPE to 'Debug' for Windows but certainly don't set any 
flags anywhere".

For the time being, I have circumvented the problem by changing my 
target to a Release build. But I would like to find out how to turn off 
code optimization for the Debug build.

Best regards,

J.D. Yamokoski