70 lines
2.9 KiB
CMake
70 lines
2.9 KiB
CMake
function(llvm_create_cross_target_internal target_name toolchain buildtype)
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if(NOT DEFINED LLVM_${target_name}_BUILD)
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set(LLVM_${target_name}_BUILD "${CMAKE_BINARY_DIR}/${target_name}")
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set(LLVM_${target_name}_BUILD ${LLVM_${target_name}_BUILD} PARENT_SCOPE)
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message(STATUS "Setting native build dir to " ${LLVM_${target_name}_BUILD})
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endif(NOT DEFINED LLVM_${target_name}_BUILD)
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if (EXISTS ${LLVM_MAIN_SRC_DIR}/cmake/platforms/${toolchain}.cmake)
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set(CROSS_TOOLCHAIN_FLAGS_INIT
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-DCMAKE_TOOLCHAIN_FILE=\"${LLVM_MAIN_SRC_DIR}/cmake/platforms/${toolchain}.cmake\")
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else()
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set(CROSS_TOOLCHAIN_FLAGS_INIT
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-DCMAKE_C_COMPILER=${CMAKE_C_COMPILER}
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-DCMAKE_CXX_COMPILER=${CMAKE_CXX_COMPILER}
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)
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endif()
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set(CROSS_TOOLCHAIN_FLAGS_${target_name} ${CROSS_TOOLCHAIN_FLAGS_INIT}
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CACHE STRING "Toolchain configuration for ${target_name}")
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if (buildtype)
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set(build_type_flags "-DCMAKE_BUILD_TYPE=${buildtype}")
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endif()
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if (LLVM_USE_LINKER AND NOT CMAKE_CROSSCOMPILING)
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set(linker_flag "-DLLVM_USE_LINKER=${LLVM_USE_LINKER}")
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endif()
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if (LLVM_EXTERNAL_CLANG_SOURCE_DIR)
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# Propagate LLVM_EXTERNAL_CLANG_SOURCE_DIR so that clang-tblgen can be built
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set(external_clang_dir "-DLLVM_EXTERNAL_CLANG_SOURCE_DIR=${LLVM_EXTERNAL_CLANG_SOURCE_DIR}")
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endif()
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add_custom_command(OUTPUT ${LLVM_${target_name}_BUILD}
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COMMAND ${CMAKE_COMMAND} -E make_directory ${LLVM_${target_name}_BUILD}
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COMMENT "Creating ${LLVM_${target_name}_BUILD}...")
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add_custom_target(CREATE_LLVM_${target_name}
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DEPENDS ${LLVM_${target_name}_BUILD})
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# Escape semicolons in the targets list so that cmake doesn't expand
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# them to spaces.
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string(REPLACE ";" "$<SEMICOLON>" targets_to_build_arg
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"${LLVM_TARGETS_TO_BUILD}")
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string(REPLACE ";" "$<SEMICOLON>" experimental_targets_to_build_arg
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"${LLVM_EXPERIMENTAL_TARGETS_TO_BUILD}")
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add_custom_command(OUTPUT ${LLVM_${target_name}_BUILD}/CMakeCache.txt
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COMMAND ${CMAKE_COMMAND} -G "${CMAKE_GENERATOR}"
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-DCMAKE_MAKE_PROGRAM="${CMAKE_MAKE_PROGRAM}"
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${CROSS_TOOLCHAIN_FLAGS_${target_name}} ${CMAKE_SOURCE_DIR}
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-DLLVM_TARGET_IS_CROSSCOMPILE_HOST=TRUE
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-DLLVM_TARGETS_TO_BUILD="${targets_to_build_arg}"
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-DLLVM_EXPERIMENTAL_TARGETS_TO_BUILD="${experimental_targets_to_build_arg}"
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-DLLVM_DEFAULT_TARGET_TRIPLE="${TARGET_TRIPLE}"
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-DLLVM_TARGET_ARCH="${LLVM_TARGET_ARCH}"
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${build_type_flags} ${linker_flag} ${external_clang_dir}
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WORKING_DIRECTORY ${LLVM_${target_name}_BUILD}
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DEPENDS CREATE_LLVM_${target_name}
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COMMENT "Configuring ${target_name} LLVM...")
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add_custom_target(CONFIGURE_LLVM_${target_name}
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DEPENDS ${LLVM_${target_name}_BUILD}/CMakeCache.txt)
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endfunction()
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function(llvm_create_cross_target target_name sysroot)
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llvm_create_cross_target_internal(${target_name} ${sysroot} ${CMAKE_BUILD_TYPE})
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endfunction()
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llvm_create_cross_target_internal(NATIVE "" Release)
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