[Qt-interest] qmake and per-file QMAKE_CXXFLAGS?

[Dave Thorup]

I'm wondering if it's possible to define QMAKE_CXXFLAGS flags on a per- 
file basis instead of defining it for the entire project?

For example, say we've got a bunch of .cpp files: foo.cpp, bar.cpp and  
baz.cpp.  Then a few of these files contain SSE2-optimized code:   
fooSSE.cpp & barSSE.cpp.  Now the problem is that I want all the  
normal files in the project - the ones without SSE2 - to be compiled  
with "QMAKE_CXXFLAGS += -msse".  But, for all the SSE2 files I want  
them to be compiled with "QMAKE_CXXFLAGS += -msse2".

If the entire project is built with "-msse2" then the generated code  
cannot run on machines that do not have SSE2.  Is it possible to have  
QMAKE_CXXFLAGS defined differently for different files in a project?   
Does anyone have any other suggestions?

Thanks!

Qt 4.4 Linux

Dave