On 8. Sep, 2010, at 16:33 , David Aldrich wrote: > Hi > > I am experimenting with using CMake to replace our manually written gnu > makefiles on Linux. I have a couple of questions: > > 1) VERBOSITY > > I would like to see the compiler command on the console when running make. I > know that one can run: > > make VERBOSE=1 > > but that displays a lot of detail, for example: > > make[1]: Entering directory ... > > Is there a way that I reduce the commentary to just show the compiler > commands? For example: > > /usr/bin/c++ -o CMakeFiles/Kernel.dir/ErrorHandler.cpp.o -c > /<mypath>/Kernel/ErrorHandler.cpp
AFAIK there's no way to do that (apart from writing a wrapper script which echoes the command to stdout and then invokes it). > > 2) COMPILER > > As shown above, cmake is invoking: > > /usr/bin/c++ > > I don't know what this tool is. How can I specify to use /usr/bin/g++ ? > > Best regards > > David The first time you invoke CMake, do it like this: CC=/usr/bin/gcc CXX=/usr/bin/g++ cmake /path/to/source Alternatively, you can pass -DCMAKE_C_COMPILER=/usr/bin/gcc to the cmake program (similarly CMAKE_CXX_COMPILER for the c++ compiler), but that can have some nasty side-effects (e.g deleting and rebuilding the whole cache if it already exists). Usually, on Linux systems, /usr/bin/c++ is just another name for /usr/bin/g++. It is traditional to call the default C++ compiler /usr/bin/c++, such that hand-crafted Makefiles don't have to guess a name. Similarly, /usr/bin/cc is the default C compiler. Hope this clears things up a bit for you Michael -- There is always a well-known solution to every human problem -- neat, plausible, and wrong. H. L. Mencken
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