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if (CMAKE_CXX_COMPILER_ID MATCHES "Clang")
set(CLANGPLUSPLUS ${CMAKE_CXX_COMPILER})
message(STATUS "Using ${CLANGPLUSPLUS} for c++ to LLVM IR translation")
else()
find_program(CLANGPLUSPLUS NAMES clang++-12 clang++)
if (CLANGPLUSPLUS MATCHES "CLANGPLUSPLUS-NOTFOUND")
message(SEND_ERROR "clang++ not found")
else()
message(STATUS "Using ${CLANGPLUSPLUS} for c++ to LLVM IR translation")
endif()
endif()
if (CMAKE_C_COMPILER_ID MATCHES "Clang")
set(CLANGC ${CMAKE_C_COMPILER})
message(STATUS "Using ${CLANGC} for c++ to LLVM IR translation")
else()
find_program(CLANGC NAMES clang-12 clang)
if (CLANGC "CLANGC-NOTFOUND")
message(SEND_ERROR "clang not found")
else()
message(STATUS "Using ${CLANGC} for c to LLVM IR translation")
endif()
endif()
find_program(LLVMLINK NAMES llvm-link-12 llvm-link)
if (LLVMLINK MATCHES "LLVMLINK-NOTFOUND")
message(SEND_ERROR "llvm-link not found")
else()
message(STATUS "Using ${LLVMLINK} for LLVM IR linking")
endif()
find_program(LLVMOPT NAMES opt-12 opt)
if (LLVMOPT MATCHES "LLVMOPT-NOTFOUND")
message(SEND_ERROR "llvm opt tool not found")
else()
message(STATUS "Using ${LLVMOPT} for LLVM IR optimization")
endif()
function(llvm_compile_cxx Tgt Inpt Out Tool UseC)
list(APPEND TARGET_INCLUDES "-I$<JOIN:$<TARGET_PROPERTY:${Tgt},INCLUDE_DIRECTORIES>,$<SEMICOLON>-I>")
list(APPEND TARGET_COMPILE_OPTIONS "$<JOIN:$<TARGET_PROPERTY:${Tgt},COMPILE_OPTIONS>,$<SEMICOLON>>")
if (${UseC})
set(STD_FLAG "")
else()
get_target_property(TARGET_STANDARD ${Tgt} CXX_STANDARD)
set(STD_FLAG "-std=c++${TARGET_STANDARD}")
endif()
add_custom_command(
OUTPUT ${Out}
COMMAND
${Tool}
${TARGET_INCLUDES}
${TARGET_COMPILE_OPTIONS}
${STD_FLAG}
-Wno-unknown-warning-option
-fno-lto
-emit-llvm
-c
${Inpt}
-o
${Out}
COMMAND_EXPAND_LISTS
DEPENDS ${Inpt} ${Tool}
)
endfunction()
function(llvm_compile_c Tgt Inpt Out Tool)
llvm_compile_cxx(${Tgt} ${Inpt} ${Out} ${Tool} TRUE)
endfunction()
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