cmake_modules/asan_toolchain.cmake

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# Set the root directory for the toolchain
set(TOOLCHAIN_ROOT $ENV{IMPALA_TOOLCHAIN})

# If Impala is built with the toolchain, change compiler and link paths
set(GCC_ROOT $ENV{IMPALA_TOOLCHAIN}/gcc-$ENV{IMPALA_GCC_VERSION})

# Use the appropriate LLVM version to build ASAN.
set(LLVM_ASAN_ROOT $ENV{IMPALA_TOOLCHAIN}/llvm-$ENV{IMPALA_LLVM_ASAN_VERSION})

set(CMAKE_C_COMPILER ${LLVM_ASAN_ROOT}/bin/clang)

# Use clang to build unless overridden by environment.
if($ENV{IMPALA_CXX_COMPILER} STREQUAL "default")
  set(CMAKE_CXX_COMPILER ${LLVM_ASAN_ROOT}/bin/clang++)
else()
  set(CMAKE_CXX_COMPILER $ENV{IMPALA_CXX_COMPILER})
endif()

# Add the GCC root location to the compiler flags
set(CXX_COMMON_FLAGS "--gcc-toolchain=${GCC_ROOT}")

# The rpath is needed to be able to run the binaries produced by the toolchain without
# specifying an LD_LIBRARY_PATH
set(TOOLCHAIN_LINK_FLAGS "-Wl,-rpath,${GCC_ROOT}/lib64")
set(TOOLCHAIN_LINK_FLAGS "${TOOLCHAIN_LINK_FLAGS} -L${GCC_ROOT}/lib64")

message(STATUS "Setup toolchain link flags ${TOOLCHAIN_LINK_FLAGS}")