Check your SDK version if you are on Lion or Mt. Lion. On 10.8, Mt. Lion, you should be using XCode-4.4. For Lion 10.7.3, this is what I have as of March 25, 2012:
$ xcodebuild -version Xcode 4.3.2 Build version 4E2002 gcov (GCC) 4.2.1 (Based on Apple Inc. build 5658) (LLVM build 2336.9.00) i686-apple-darwin11-llvm-gcc-4.2 (GCC) 4.2.1 (Based on Apple Inc. build 5658) (LLVM build 2336.9.00) Apple clang version 3.1 (tags/Apple/clang-318.0.58) (based on LLVM 3.1svn) If you build llvm from llvm.org head, you will get llvm-cov, $ /usr/local/bin/llvm-cov --version LLVM (http://llvm.org/): LLVM version 3.1svn Optimized build with assertions. Built Mar 23 2012 (21:05:05). Default target: x86_64-apple-darwin11.3.0 Host CPU: corei7 To compile dlrdave-SmallAndFast using clang for coverage: export CC=/usr/bin/clang export CXX=/usr/bin/clang++ export CFLAGS='-O0 --coverage' export CXXFLAGS='-O0 --coverage' mkdir build cd build cmake -DCMAKE_VERBOSE_MAKEFILE=ON .. make ./echoargs gcov -o CMakeFiles/echoargs.dir/echoargs.c.gcda ../echoargs.c llvm-cov -gcda=CMakeFiles/echoargs.dir/echoargs.c.gcda -gcno=CMakeFiles/echoargs.dir/echoargs.c.gcno I probably got this all wrong, but there it is. Some notes: It didn't like my -march=native for a cflag with clang. I couldn't try compile the simple test with clang HEAD --coverage, due to missing symbols for x86_64, which is annoying: error log => https://gist.github.com/2198932 It didn't work with llvm-gcc-4.2.1 (2336.9) even if I added a target_link_library(echoargs /usr/lib/libprofile_rt.a) I guess there's a bug in that version of llvm-gcc, but ttwagos. I'm a n00b. -- 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