Hi! FreeBSD project use userspace qemu emulation to cross-build packages for some architectures, namely arm. This worked great for most packages, however ones using cmake tend to fail randomly. I couldn't reproduce these failures, but after we've updated cmake to 3.3.1 which is more verbose, the cause became apparent.
Example failure log: http://beefy8.nyi.freebsd.org/data/head-armv6-default/p396164_s287479/logs/flare-game-0.19_1.log Relevant excerpt: --- -- Check for working CXX compiler: /nxb-bin/usr/bin/c++ CMake Error: Generator: execution of make failed. Make command was: "/usr/bin/make" "cmTryCompileExec920170445/fast" -- Check for working CXX compiler: /nxb-bin/usr/bin/c++ -- broken CMake Error at /usr/local/share/cmake/Modules/CMakeTestCXXCompiler.cmake:54 (message): The C++ compiler "/nxb-bin/usr/bin/c++" is not able to compile a simple test program. It fails with the following output: ... Linking CXX executable cmTryCompileExec920170445 /usr/local/bin/cmake -E cmake_link_script CMakeFiles/cmTryCompileExec920170445.dir/link.txt --verbose=1 /nxb-bin/usr/bin/c++ -O2 -pipe -mfloat-abi=softfp -fno-strict-aliasing CMakeFiles/cmTryCompileExec920170445.dir/testCXXCompiler.cxx.o -o cmTryCompileExec920170445 Process terminated due to timeout Generator: execution of make failed. Make command was: "/usr/bin/make" ... --- As expected, emulated build is much slower than native one (even though we try to use native (amd64) cross(arm)-compiler (and some tools) instead of using fully emulated build). Package builds are also highly concurrent. It seems like cmake timeout for these compiler tests is too small for this environment and it fires frequently. The question is obvious: where is this timeout defined, what value is it set to exactly and is it tunable? -- Dmitry Marakasov . 55B5 0596 FF1E 8D84 5F56 9510 D35A 80DD F9D2 F77D amd...@amdmi3.ru ..: jabber: amd...@jabber.ru http://amdmi3.ru -- Powered by www.kitware.com Please keep messages on-topic and check the CMake FAQ at: http://www.cmake.org/Wiki/CMake_FAQ Kitware offers various services to support the CMake community. For more information on each offering, please visit: CMake Support: http://cmake.org/cmake/help/support.html CMake Consulting: http://cmake.org/cmake/help/consulting.html CMake Training Courses: http://cmake.org/cmake/help/training.html Visit other Kitware open-source projects at http://www.kitware.com/opensource/opensource.html Follow this link to subscribe/unsubscribe: http://public.kitware.com/mailman/listinfo/cmake
