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LLVM_LIB_DIR is a variable used for runtime compilations. When cross compiling, LLVM_LIB_DIR must be set to the libclang path on the target. So, this path should not be retrieved during compilation but at runtime. dladdr uses an address to search for a loaded library. If a library is found, it returns information about it. The path to the libclang library can therefore be retrieved using one of its functions. This is useful because we don't know the name of the libclang library (libclang.so.X or libclang-cpp.so.X) v2 (Karol): use clang::CompilerInvocation::CreateFromArgs for dladdr v3 (Karol): follow symlinks to fix errors on debian Fixes:e22491c832("clc: fetch clang resource dir at runtime") Signed-off-by: Antoine Coutant <antoine.coutant@smile.fr> Reviewed-by: Karol Herbst <kherbst@redhat.com> Reviewed-by (v1): Jesse Natalie <jenatali@microsoft.com> Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/25568> (cherry picked from commit445aacb421)
`Mesa <https://mesa3d.org>`_ - The 3D Graphics Library ====================================================== Source ------ This repository lives at https://gitlab.freedesktop.org/mesa/mesa. Other repositories are likely forks, and code found there is not supported. Build & install --------------- You can find more information in our documentation (`docs/install.rst <https://mesa3d.org/install.html>`_), but the recommended way is to use Meson (`docs/meson.rst <https://mesa3d.org/meson.html>`_): .. code-block:: sh $ mkdir build $ cd build $ meson .. $ sudo ninja install Support ------- Many Mesa devs hang on IRC; if you're not sure which channel is appropriate, you should ask your question on `OFTC's #dri-devel <irc://irc.oftc.net/dri-devel>`_, someone will redirect you if necessary. Remember that not everyone is in the same timezone as you, so it might take a while before someone qualified sees your question. To figure out who you're talking to, or which nick to ping for your question, check out `Who's Who on IRC <https://dri.freedesktop.org/wiki/WhosWho/>`_. The next best option is to ask your question in an email to the mailing lists: `mesa-dev\@lists.freedesktop.org <https://lists.freedesktop.org/mailman/listinfo/mesa-dev>`_ Bug reports ----------- If you think something isn't working properly, please file a bug report (`docs/bugs.rst <https://mesa3d.org/bugs.html>`_). Contributing ------------ Contributions are welcome, and step-by-step instructions can be found in our documentation (`docs/submittingpatches.rst <https://mesa3d.org/submittingpatches.html>`_). Note that Mesa uses gitlab for patches submission, review and discussions.