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69441e6c62
Summary: Cross-compilation uses recursive cmake invocations to build native host tools. These recursive invocations only forward a fixed set of variables/options, since the native environment is generally the default. This change adds -DLLVM_TARGET_IS_CROSSCOMPILE_HOST=TRUE to the recursive cmake invocations, so that cmake files can distinguish these recursive invocations from top-level ones, which can explain why expected options are unset. LLILC will use this to avoid trying to generate its build rules in the crosscompile native host target (where it is not needed), which would fail if attempted because LLILC requires a cmake variable passed on the command line, which is not forwarded in the recursive invocation. Reviewers: rnk, beanz Subscribers: llvm-commits Differential Revision: http://reviews.llvm.org/D12679 llvm-svn: 247151
58 lines
2.4 KiB
CMake
58 lines
2.4 KiB
CMake
function(llvm_create_cross_target_internal target_name toochain 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_${target_name}
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-DCMAKE_TOOLCHAIN_FILE=\"${LLVM_MAIN_SRC_DIR}/cmake/platforms/${toolchain}.cmake\"
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CACHE STRING "Toolchain file for ${target_name}")
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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_command(OUTPUT ${LLVM_${target_name}_BUILD}/CMakeCache.txt
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COMMAND ${CMAKE_COMMAND} -G "${CMAKE_GENERATOR}"
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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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WORKING_DIRECTORY ${LLVM_${target_name}_BUILD}
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DEPENDS ${LLVM_${target_name}_BUILD}
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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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set_directory_properties(PROPERTIES ADDITIONAL_MAKE_CLEAN_FILES
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${LLVM_${target_name}_BUILD})
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if(NOT IS_DIRECTORY ${LLVM_${target_name}_BUILD})
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message(STATUS "Configuring ${target_name} build...")
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execute_process(COMMAND ${CMAKE_COMMAND} -E make_directory
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${LLVM_${target_name}_BUILD} )
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message(STATUS "Configuring ${target_name} targets...")
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if (buildtype)
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set(build_type_flags "-DCMAKE_BUILD_TYPE=${buildtype}")
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endif()
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execute_process(COMMAND ${CMAKE_COMMAND} ${build_type_flags}
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-G "${CMAKE_GENERATOR}" -DLLVM_TARGETS_TO_BUILD=${LLVM_TARGETS_TO_BUILD}
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${CROSS_TOOLCHAIN_FLAGS_${target_name}} ${CMAKE_SOURCE_DIR}
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-DLLVM_TARGET_IS_CROSSCOMPILE_HOST=TRUE
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WORKING_DIRECTORY ${LLVM_${target_name}_BUILD} )
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endif(NOT IS_DIRECTORY ${LLVM_${target_name}_BUILD})
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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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