編譯帶有除錯資訊的 LLVM/Clang library 並於編譯時替換 dynamic library

編譯帶有除錯資訊的 LLVM/Clang

$ git clone https://github.com/llvm/llvm-project.git
$ cd llvm-project
$ mkdir build
$ cd build
$ cmake -G Ninja -DCMAKE_BUILD_TYPE=Debug -DLLVM_ENABLE_PROJECTS='clang' -DLLVM_ENABLE_RTTI=ON -DLLVM_CCACHE_BUILD=ON -DLLVM_BUILD_LLVM_DYLIB=ON -DLLVM_LINK_LLVM_DYLIB=ON -DLLVM_ENABLE_ABI_BREAKING_CHECKS=OFF -DLLVM_USE_LINKER=lld -DLLVM_USE_SPLIT_DWARF=ON -DLLVM_TARGETS_TO_BUILD='X86' -DLLVM_INCLUDE_EXAMPLES=OFF -DLLVM_INCLUDE_BENCHMARKS=OFF -DLLVM_INCLUDE_TESTS=OFF -DLLVM_ENABLE_LTO=OFF -DLLVM_OPTIMIZED_TABLEGEN=ON -DCLANG_ENABLE_STATIC_ANALYZER=OFF -DCLANG_ENABLE_ARCMT=OFF ../llvm
$ ninja -j

$ git clone https://github.com/llvm/llvm-project.git

$ cd llvm-project

$ mkdir build

$ cd build

$ cmake -G Ninja -DCMAKE_BUILD_TYPE=Debug -DLLVM_ENABLE_PROJECTS='clang' -DLLVM_ENABLE_RTTI=ON -DLLVM_CCACHE_BUILD=ON -DLLVM_BUILD_LLVM_DYLIB=ON -DLLVM_LINK_LLVM_DYLIB=ON -DLLVM_ENABLE_ABI_BREAKING_CHECKS=OFF -DLLVM_USE_LINKER=lld -DLLVM_USE_SPLIT_DWARF=ON -DLLVM_TARGETS_TO_BUILD='X86' -DLLVM_INCLUDE_EXAMPLES=OFF -DLLVM_INCLUDE_BENCHMARKS=OFF -DLLVM_INCLUDE_TESTS=OFF -DLLVM_ENABLE_LTO=OFF -DLLVM_OPTIMIZED_TABLEGEN=ON -DCLANG_ENABLE_STATIC_ANALYZER=OFF -DCLANG_ENABLE_ARCMT=OFF ../llvm

$ ninja -j

LLVM CMake Build Reference: https://llvm.org/docs/CMake.html
LLVM Getting Started: https://llvm.org/docs/GettingStarted.html

快速編譯以及快速連結請參考 LLVM Getting Started 的 Common Problem 的 CMake 選項，上面的範例 CMake 選項已經將 Common Problem 的選項開啟 (或關閉)。

替換編譯時使用的 dynamic library

CMake - CMakeLists.txt

cmake_minimum_required(VERSION 3.18)

project(parser)

add_executable(parser parser.cpp)

target_include_directories(parser PUBLIC /home/louie/arrc/llvm-project/build/include)
set_target_properties(parser PROPERTIES CXX_STANDARD 14)

find_library(CLANG_LIB NAMES clang-cpp HINTS /home/louie/arrc/llvm-project/build/lib)
find_library(debugLLVM_LIB NAMES LLVM-10 HINTS /home/louie/arrc/llvm-project/build/lib NO_DEFAULT_PATH)

target_link_libraries(parser ${CLANG_LIB} ${debugLLVM_LIB})

cmake_minimum_required(VERSION 3.18)

project(parser)

add_executable(parser parser.cpp)

target_include_directories(parser PUBLIC /home/louie/arrc/llvm-project/build/include)

set_target_properties(parser PROPERTIES CXX_STANDARD 14)

find_library(CLANG_LIB NAMES clang-cpp HINTS /home/louie/arrc/llvm-project/build/lib)

find_library(debugLLVM_LIB NAMES LLVM-10 HINTS /home/louie/arrc/llvm-project/build/lib NO_DEFAULT_PATH)

target_link_libraries(parser ${CLANG_LIB} ${debugLLVM_LIB})

Makefile

-Wl,-rpath,{YOUR_PATH_TO_LLVM_PROJECT}/llvm-project/build/lib {YOUR_PATH_TO_LLVM_PROJECT}/llvm-project/build/lib/libclang-cpp.so

1	-Wl,-rpath,{YOUR_PATH_TO_LLVM_PROJECT}/llvm-project/build/lib {YOUR_PATH_TO_LLVM_PROJECT}/llvm-project/build/lib/libclang-cpp.so

編譯連結時出現 undefined reference to `llvm::DisableABIBreakingChecks'

確認 include directories 是不是正確的:
1. target_include_directories( foobar PUBLIC /home/llvm-project/build/include)
確認編譯 LLVM/Clang 時是否有加上 LLVM_ENABLE_ABI_BREAKING_CHECKS=OFF
1. 可以透過 cmake . 來更新 build options
make clean 後重新編譯