[CMake] KDE3 package forces -Wall flag

[Alexander Thomas]

I'm working on a project that uses Qt3, and for some reason, the "-Wall" 
flag is automatically appended when the following line occurs in 
CMakeLists.txt:
   find_package(KDE3 REQUIRED)

Normally I write my code such that no warnings show up even with "-Wall" 
enabled. However, the majority of this source code was written by 
someone else who consistently mixes signed and unsigned variables. With 
GCC 4.3, a new warning has popped up about conversion between integers 
and floats etc, and the source code is also riddled with those.

So when I compile this project, the console is completely spammed with 
warnings, making it hard to spot the real important warnings and even 
errors.

I already tried adding -Wno-sign-compare etc. to the CMAKE_C_FLAGS while 
configuring the build in ccmake. I would expect any flags defined there 
to be appended at the very end of the compiler flags, but they aren't. 
The -Wall flag comes after them in the Makefiles.
The only solution is to put these extra flags in the CMakeLists.txt file 
itself, using "SET(CMAKE_CXX_FLAGS ...)". This is of course an ugly 
solution. Is there a way to prevent KDE3 from appending the -Wall flag 
altogether?

Alexander


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