Hi, I searched the cmake list archive and found a reference in 2004 about modifying cmake to generate non-recursive makefiles:
On Jan 30, 2004, at 2:44 PM, William A. Hoffman wrote: >* Right now there is no way to create non-recursive makefiles.*>* We have some >plans to create non-recursive makefiles. However,*>* I am not sure one large >makefile will scale for larger projects.*>* We have had problems with make on >various systems and large files, or*>* too many dependencies. We have seen >that problem even with the*>* recursive make that we use. So, I don't really >agree with the paper*>* on that point. If you are interested in trying a >non-recursive*>* generator, I could point you at the right places in the >code.*>* It would involve creating new class like *>* >cmLocalUnixMakefileGenerator.cxx.*> Has anyone done any work in this area? A year ago I migrated our build system to cmake. Using distcc and a distributed build farm, we were able to reduce build time on linux from over an hour to about 5 minutes. I'm now looking for opportunities to reach the next level of build performance. One thing I identified is that with generated recursive make files we can only send compile jobs out one directory at a time. I'm hoping that with a non-recursive make file we'll be able to send a higher number of independent source files out to the build farm in parallel. I'm open to contributing code if no one has done it yet. Thanks, Sahn
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