Script for building MSan

msan-build.sh

set -exu pipeline

SCRIPT_DIR=$(cd "$(dirname "$0")"; pwd)
PROJECT_DIR="$SCRIPT_DIR"/llvm-project

mkdir -p build
cd build
cmake \
  -GNinja \
  -DCMAKE_CXX_COMPILER_LAUNCHER=ccache \
  -DCMAKE_BUILD_TYPE=Release \
  "$PROJECT_DIR"/llvm
#  -DLLVM_ENABLE_PROJECTS="clang;compiler-rt;libcxx;libcxxabi;libunwind" \
ninja
cd ..


#* ``LLVM_TABLEGEN``, ``CLANG_TABLEGEN`` : Paths to llvm-tblgen and clang-tblgen
#  for the host architecture. If you already have built clang for the host, you
#  can point these variables to the executables in your build directory. If not,
#  you will need to build the llvm-tblgen and clang-tblgen host targets at
#  least.


mkdir -p build-libcxx-msan
cd build-libcxx-msan

cmake \
  -GNinja \
  -DCMAKE_CXX_COMPILER_LAUNCHER=ccache \
  -DCMAKE_BUILD_TYPE=Release \
  -DLLVM_USE_SANITIZER=MemoryWithOrigins \
  -DLLVM_TABLEGEN="${SCRIPT_DIR}/build/bin/llvm-tblgen" \
  "$PROJECT_DIR"/llvm
#  -DCMAKE_C_COMPILER=$PWD/../build/bin/clang \
#  -DCMAKE_CXX_COMPILER=$PWD/../build/bin/clang++ \
#  -DCMAKE_CROSSCOMPILING=ON \
#  -DLLVM_ENABLE_PROJECTS="libcxx" \
#  -DLLVM_ENABLE_LIBCXX=ON \
#  -DLIBCXX_CXX_ABI=libcxxabi \
#  -DLIBCXX_CXX=libcxx \
#  -DLLVM_TOOLS_BINARY_DIR="${SCRIPT_DIR}/build/bin" \
#  -DLLVM_ENABLE_LIBCXX=ON \
#  -DLIBCXX_CXX_ABI=libcxxabi \
#  -DLIBCXX_CXX=libcxx \
#  -DLLVM_ENABLE_LIBCXX=ON \
#-DLLVM_INSTALL_PREFIX="${SCRIPT_DIR}/build" \
#-DCMAKE_CXX_FLAGS="-fsanitize=memory -fsanitize-memory-track-origins" \
#  -DLLVM_ENABLE_PROJECTS="libcxx;libcxxabi" \
ninja
cd ..

mkdir -p build-clang-msan
cd build-clang-msan
CLANG_BUILD=$PWD/../build
LIBCXX_BUILD=$PWD/../build-libcxx-msan
MSAN_LINK_FLAGS="-lc++abi -Wl,--rpath=$LIBCXX_BUILD/lib -L$LIBCXX_BUILD/lib"
MSAN_FLAGS="$MSAN_LINK_FLAGS -nostdinc++ \
  -isystem $LIBCXX_BUILD/include \
  -isystem $LIBCXX_BUILD/include/c++/v1  \
  -fsanitize=memory \
  -fsanitize-memory-track-origins \
  -w"
cmake \
  -GNinja \
  -DCMAKE_BUILD_TYPE=Release \
  -DCMAKE_C_COMPILER=$CLANG_BUILD/bin/clang \
  -DCMAKE_C_FLAGS="$MSAN_FLAGS" \
  -DCMAKE_CXX_COMPILER=$CLANG_BUILD/bin/clang++ \
  -DCMAKE_CXX_COMPILER_LAUNCHER=ccache \
  -DCMAKE_CXX_FLAGS="$MSAN_FLAGS" \
  -DCMAKE_EXE_LINKER_FLAGS=$MSAN_LINK_FLAGS \
  -DLLVM_ENABLE_LIBCXX=ON \
  -DLLVM_ENABLE_PROJECTS="clang;compiler-rt;libcxx;libcxxabi;libunwind" \
  -DLLVM_USE_SANITIZER=MemoryWithOrigins \
  "$PROJECT_DIR"/llvm
ninja