How to determine the compiler-version (GCC) ?

[Comer352l]

Hi,

does anyone know how to determine the compiler-version (GCC) ?
With GCC-versions >=4.2, the "-fgcse" optimization (enabled at optimization level 2) causes an enormous binary size increase (about 1000% with 4.3.x !!!), but I don't want to disable it generally (with QMAKE_CXXFLAGS)...

[wysota]

gcc -v returns the version string. You can have a script that uses tools such as sed, cut and grep that will process its output and return only the version number or 0/1 depending on the version found. You can then call such a script from qmake project and evaluate its output.