Hi Michael, This is a well-known problem with parallel make. When using -j<N> you should NEVER specify multiple targets, because each target could be built independently in a separate make process even if they have dependencies. Here, you're using the implicit target 'all' and the target 'install'. The "proper" way to write this in a one-liner would be:
make -j2 && make -j2 install You might consider to set MAKEFLAGS=-j2. HTH, Marcel Loose. On Fri, 2010-04-09 at 07:50 +0200, Michael Wild wrote: > Hi all > > While creating a formula for Homebrew on Mac OS X 10.6.2 I happened across a problem when I tried to build CMake 2.8.1 in parallel (-j2) and directly invoked the "install" target where libcmsys.a and libCMakeLib.a get built twice. I.e. I did the following: > > $ <path/to/source>/bootstrap --prefix=<prefix> --system-libs --datadir=/share/cmake \ > --docdir=/share/doc/cmake --mandir=/share/man > > $ make -j2 install > > > Looking through the log, I found that both libcmsys.a and libCMakeLib.a get built twice, where sometimes the second thread interferes with the first, especially during the linking stage. If I split the build and install steps, i.e > > $ make -j2 > $ make install > > I don't observe this weirdness. Is this a bug in the generated Makefiles or in Make? > > Michael > _______________________________________________ > Powered by www.kitware.com > > Visit other Kitware open-source projects at http://www.kitware.com/opensource/opensource.html > > Please keep messages on-topic and check the CMake FAQ at: http://www.cmake.org/Wiki/CMake_FAQ > > Follow this link to subscribe/unsubscribe: > http://www.cmake.org/mailman/listinfo/cmake _______________________________________________ Powered by www.kitware.com Visit other Kitware open-source projects at http://www.kitware.com/opensource/opensource.html Please keep messages on-topic and check the CMake FAQ at: http://www.cmake.org/Wiki/CMake_FAQ Follow this link to subscribe/unsubscribe: http://www.cmake.org/mailman/listinfo/cmake
