Am Donnerstag, 16. August 2007 22:42:02 schrieb Larry Evans:
I assume the CMAKE_CXX_FLAGS:STRING value from the CMakeCache.txt is used since I saw the error message when make was run:
Scanning dependencies of target boost_iostreams-shared [ 2%] Building CXX object libs/iostreams/src/CMakeFiles/boost_iostreams-shared.dir/file_descriptor.o cc1plus: error: unrecognized command line option "-std=gnu++0x" make[2]: *** [libs/iostreams/src/CMakeFiles/boost_iostreams-shared.dir/file_descriptor.o ]
This means the compiler which was picked by CMake isn't aware of this option, so you should delete CMakeCache.txt and run CMake again with the right CXX.
This behavior of CMake ensures that the results of the test CMake runs on the compiler are allway valid. Since the results are stored in CMakeLists.txt,
Which CMakeLists.txt? The following command:
cd ~/prog_dev/boost-svn/ro/sandbox-branches/boost-cmake/src/ find . -name CMakeLists.txt -ls 5181833 12 -rw-r--r-- 1 evansl evansl 10169 Aug 13 16:16 ./libs/config/test/CMakeLists.txt ...
Argh, sorry for the confusion. This " results are stored in CMakeLists.txt " should be " results are stored in CMakeCache.txt " A CMakeLists.txt is allways written by the user, CMake only reads but never writes to them.
you have to remove it, which triggers CMake to rerun the compiler tests. Does 'it' refer to CMakeLists.txt or CMakeCache.txt? CMakeCache.txt!
Maik