Hi all. I'm trying to build LLVM/Clang locally on my Linux system, but I'm using a separate set of system headers and libraries. These appear in a separate sysroot directory, like this:
/sysroot/tools/usr/lib64/... /sysroot/tools/usr/lib/... /sysroot/tools/usr/include/... This is basically an extracted set of Red Hat 6 system libraries, so the content in usr/lib are 32bit libraries and the content in usr/lib64 are 64bit libraries. I'm building LLVM/Clang 4.0 and in the Clang CMakeLists.txt file we have simply: find_package(LibXml2 2.5.3 QUIET) There are libxml2.so files in both the 64bit and 32bit lib directories above as well as the usr/include directory. I run cmake with -DCMAKE_PREFIX_PATH=/sysroot/tools/usr, and CMake finds things in my sysroot. However, it uses the *32bit* libraries instead of the 64bit ones; CMakeCache.txt says: //Path to a file. LIBXML2_INCLUDE_DIR:PATH=/sysroot/tools/usr/include/libxml2 //Path to a library. LIBXML2_LIBRARIES:FILEPATH=/sysroot/tools/usr/lib/libxml2.so The latter should be finding usr/lib64/libxml2.so instead. Because of this incorrect behavior the link of Clang fails (because it's a 64bit executable trying to link a 32bit library). I'm using a slightly older CMake (3.5.2) but I'd assume find_package() understands the standard directory structure used by Red Hat. Is there a way to convince CMake find_package() to look in the right directory? -- 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
