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CMakeLists.txt
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CMakeLists.txt
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cmake_minimum_required(VERSION 3.13.4)
project(llvm-tutor-hello-world)
#===============================================================================
# 1. LOAD LLVM CONFIGURATION
#===============================================================================
# Set this to a valid LLVM installation dir
set(LT_LLVM_INSTALL_DIR "" CACHE PATH "LLVM installation directory")
# Add the location of LLVMConfig.cmake to CMake search paths (so that
# find_package can locate it)
list(APPEND CMAKE_PREFIX_PATH "${LT_LLVM_INSTALL_DIR}/lib/cmake/llvm/")
# FIXME: This is a warkaround for #25. Remove once resolved and use
find_package(LLVM 15 REQUIRED CONFIG)
# HelloWorld includes headers from LLVM - update the include paths accordingly
include_directories(SYSTEM ${LLVM_INCLUDE_DIRS})
#===============================================================================
# 2. LLVM-TUTOR BUILD CONFIGURATION
#===============================================================================
# Use the same C++ standard as LLVM does
set(CMAKE_CXX_STANDARD 17 CACHE STRING "")
# LLVM is normally built without RTTI. Be consistent with that.
if(NOT LLVM_ENABLE_RTTI)
set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -fno-rtti")
endif()
#===============================================================================
# 3. ADD THE TARGET
#===============================================================================
add_library(HelloWorld SHARED HelloWorld.cpp)
# Allow undefined symbols in shared objects on Darwin (this is the default
# behaviour on Linux)
target_link_libraries(HelloWorld
"$<$<PLATFORM_ID:Darwin>:-undefined dynamic_lookup>")