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Link LLVM-based tools dynamically to LLVM (take 2) #441

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Jul 12, 2024
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Link LLVM-based tools dynamically to LLVM (take 2) #441

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13 changes: 13 additions & 0 deletions cmake/wasi-sdk-toolchain.cmake
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Original file line number Diff line number Diff line change
Expand Up @@ -55,6 +55,19 @@ set(tools
c++filt
llvm-config)

# By default link LLVM dynamically to all the various tools. This greatly
# reduces the binary size of all the tools through a shared library rather than
# statically linking LLVM to each individual tool. This requires a few other
# install targets as well to ensure the appropriate libraries are all installed.
#
# Also note that the `-wasi-sdk` version suffix is intended to help prevent
# these dynamic libraries from clashing with other system libraries in case the
# `lib` dir gets put on `LD_LIBRARY_PATH` or similar.
if(NOT WIN32)
list(APPEND default_cmake_args -DLLVM_LINK_LLVM_DYLIB=ON -DLLVM_VERSION_SUFFIX=-wasi-sdk)
list(APPEND tools LLVM clang-cpp)
endif()

list(TRANSFORM tools PREPEND --target= OUTPUT_VARIABLE build_targets)
list(TRANSFORM tools PREPEND --target=install- OUTPUT_VARIABLE install_targets)

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