# Build gen_gccbuiltins tools to generate D module from LLVM's list of
# GCC-style intrinsics.

if(CMAKE_CROSSCOMPILING)
    message(STATUS "NOT building gen_gccbuiltins utility when cross-compiling (you can use host LDC's ldc/gccbuiltins_*.di files)")
    return()
endif()

# The LLVM_INCLUDE_DIR definition is not always set, e.g. on Windows.
# strip off anything but the first path
string(REGEX REPLACE ";.*$" "" LLVM_INC_DIR "${LLVM_INCLUDE_DIRS}")
find_path(LLVM_INTRINSIC_TD_PATH "Intrinsics.td" PATHS ${LLVM_INC_DIR}/llvm ${LLVM_INC_DIR}/llvm/IR NO_DEFAULT_PATH)
if (${LLVM_INTRINSIC_TD_PATH} STREQUAL "LLVM_INTRINSIC_TD_PATH-NOTFOUND")
    message(SEND_ERROR "File Intrinsics.td not found")
else()
    string(REGEX REPLACE "/llvm(/IR)?$" "" LLVM_INTRINSIC_TD_PATH ${LLVM_INTRINSIC_TD_PATH})
    message(STATUS "Using path for Intrinsics.td: ${LLVM_INTRINSIC_TD_PATH}")
endif()

add_executable(gen_gccbuiltins gen_gccbuiltins.cpp)

set_target_properties(
    gen_gccbuiltins PROPERTIES
    RUNTIME_OUTPUT_DIRECTORY ${PROJECT_BINARY_DIR}/bin
    COMPILE_FLAGS "${LLVM_CXXFLAGS} ${LDC_CXXFLAGS} \"-DLLVM_INTRINSIC_TD_PATH=R\\\"(${LLVM_INTRINSIC_TD_PATH})\\\"\""
    LINK_FLAGS "${SANITIZE_LDFLAGS}"
)
target_link_libraries(gen_gccbuiltins ${LLVM_TABLEGEN_LIBRARY} ${LLVM_LIBRARIES} ${CMAKE_DL_LIBS} ${LLVM_LDFLAGS})
if(${CMAKE_SYSTEM_NAME} MATCHES "Linux")
    target_link_libraries(gen_gccbuiltins dl)
endif()

if ((TARGET FileCheck) OR (EXISTS ${LLVM_ROOT_DIR}/bin/FileCheck))
  # already provided by LLVM
else()
# Build FileCheck for testing (build source version depending on LLVM version)
set(FILECHECK_SRC FileCheck-${LLVM_VERSION_MAJOR}.cpp)
if (EXISTS ${CMAKE_CURRENT_SOURCE_DIR}/${FILECHECK_SRC})
    add_executable(FileCheck ${FILECHECK_SRC})
    set_target_properties(
        FileCheck PROPERTIES
        RUNTIME_OUTPUT_DIRECTORY ${PROJECT_BINARY_DIR}/bin
        COMPILE_FLAGS "${LLVM_CXXFLAGS} ${LDC_CXXFLAGS}"
        LINK_FLAGS "${SANITIZE_LDFLAGS}"
    )
    if(NOT (LDC_LLVM_VER LESS 1200))
        target_link_libraries(FileCheck LLVMFileCheck)
    endif()
    target_link_libraries(FileCheck ${LLVM_LIBRARIES} ${CMAKE_DL_LIBS} ${LLVM_LDFLAGS})
else()
    message(STATUS "Skip building FileCheck (source not found), assuming it can be found in LLVM bin directory")
endif()
endif()

if ((TARGET not) OR (EXISTS ${LLVM_ROOT_DIR}/bin/not))
  # already provided by LLVM
else()
# Build `not` for testing
add_executable(not not.cpp)
set_target_properties(
    not PROPERTIES
    RUNTIME_OUTPUT_DIRECTORY ${PROJECT_BINARY_DIR}/bin
    COMPILE_FLAGS "${LLVM_CXXFLAGS} ${LDC_CXXFLAGS}"
    LINK_FLAGS "${SANITIZE_LDFLAGS}"
)
target_link_libraries(not  ${LLVM_LIBRARIES} ${CMAKE_DL_LIBS} ${LLVM_LDFLAGS})
endif()
