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Link clang with the dynamic llvm library

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It dramatically reduces the size of the installation to 250 MiB. We also
need to inject the rpath of the libraries during the build phase with
CMAKE_BUILD_RPATH as well as zlib. The CMAKE_BUILD_WITH_INSTALL_PATH
option is disabled, as it contradicts the former.
This commit is contained in:
Rodrigo Arias 2023-09-06 14:14:40 +02:00
parent 4b06175b42
commit 01e07d559c
1 changed files with 4 additions and 1 deletions
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5
bsc/llvm-ompss2/clang.nix
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@ -71,6 +71,10 @@ stdenv.mkDerivation rec {
cmakeFlagsArray=( cmakeFlagsArray=(
"-DLLVM_HOST_TRIPLE=${stdenv.targetPlatform.config}" "-DLLVM_HOST_TRIPLE=${stdenv.targetPlatform.config}"
"-DLLVM_TARGETS_TO_BUILD=host" "-DLLVM_TARGETS_TO_BUILD=host"
"-DLLVM_BUILD_LLVM_DYLIB=ON"
"-DLLVM_LINK_LLVM_DYLIB=ON"
# Required to run clang-ast-dump and clang-tblgen during build
"-DCMAKE_BUILD_RPATH=$PWD/lib:${zlib}/lib"
"-DLLVM_ENABLE_LLD=ON" "-DLLVM_ENABLE_LLD=ON"
"-DCMAKE_CXX_FLAGS_DEBUG=-g -ggnu-pubnames" "-DCMAKE_CXX_FLAGS_DEBUG=-g -ggnu-pubnames"
"-DCMAKE_EXE_LINKER_FLAGS_DEBUG=-Wl,-gdb-index" "-DCMAKE_EXE_LINKER_FLAGS_DEBUG=-Wl,-gdb-index"
@ -83,7 +87,6 @@ stdenv.mkDerivation rec {
"-DLLVM_ENABLE_LIBXML2=OFF" "-DLLVM_ENABLE_LIBXML2=OFF"
# Set the rpath to include external libraries (zlib) both on build and # Set the rpath to include external libraries (zlib) both on build and
# install # install
"-DCMAKE_BUILD_WITH_INSTALL_RPATH=ON"
"-DCMAKE_INSTALL_RPATH_USE_LINK_PATH=ON" "-DCMAKE_INSTALL_RPATH_USE_LINK_PATH=ON"
"-DCMAKE_INSTALL_RPATH=${zlib}/lib" "-DCMAKE_INSTALL_RPATH=${zlib}/lib"
) )