diff options
Diffstat (limited to 'kernel/cmake/kernel.cmake')
| -rw-r--r-- | kernel/cmake/kernel.cmake | 43 |
1 files changed, 43 insertions, 0 deletions
diff --git a/kernel/cmake/kernel.cmake b/kernel/cmake/kernel.cmake new file mode 100644 index 0000000..dd45b12 --- /dev/null +++ b/kernel/cmake/kernel.cmake @@ -0,0 +1,43 @@ +# SPDX-License-Identifier: GPL-2.0 +# +# CMake macros to build and install Linux kernel modules +# Copyright (C) 2020 Manuel Bentele <development@manuel-bentele.de> +# + +# macro to define target for preparing the Kbuild file +macro(add_kernel_build BUILD_SOURCE_TARGET BUILD_SOURCE_FILE) + get_filename_component(BUILD_SOURCE_FILE_NAME ${BUILD_SOURCE_FILE} NAME) + add_custom_command(OUTPUT ${CMAKE_CURRENT_BINARY_DIR}/${BUILD_SOURCE_FILE_NAME} + COMMAND ${CMAKE_COMMAND} + ARGS -E copy ${BUILD_SOURCE_FILE} ${CMAKE_CURRENT_BINARY_DIR}/${BUILD_SOURCE_FILE_NAME} + WORKING_DIRECTORY ${CMAKE_CURRENT_BINARY_DIR} + DEPENDS ${BUILD_SOURCE_FILE} + VERBATIM) + add_custom_target(${BUILD_SOURCE_TARGET} DEPENDS ${CMAKE_CURRENT_BINARY_DIR}/${BUILD_SOURCE_FILE_NAME}) +endmacro(add_kernel_build) + +# macro to define kernel module targets +macro(add_kernel_module MODULE_NAME KERNEL_DIR MODULE_MACRO MODULE_SOURCE_FILES MODULE_HEADER_FILES BUILD_SOURCE_TARGET) + # copy source files + foreach(MODULE_SOURCE_FILE ${MODULE_SOURCE_FILES}) + file(COPY ${MODULE_SOURCE_FILE} DESTINATION ${CMAKE_CURRENT_BINARY_DIR}) + endforeach() + # copy header files + foreach(MODULE_HEADER_FILE ${MODULE_HEADER_FILES}) + file(COPY ${MODULE_HEADER_FILE} DESTINATION ${CMAKE_CURRENT_BINARY_DIR}) + endforeach() + # define build command + set(MODULE_BUILD_COMMAND ${CMAKE_MAKE_PROGRAM} ${MODULE_MACRO} + -C ${KERNEL_DIR}/build + M=${CMAKE_CURRENT_BINARY_DIR} modules + EXTRA_CFLAGS=${KERNEL_C_FLAGS}) + add_custom_command(OUTPUT ${CMAKE_CURRENT_BINARY_DIR}/${MODULE_NAME}.ko + COMMAND ${MODULE_BUILD_COMMAND} + WORKING_DIRECTORY ${CMAKE_CURRENT_BINARY_DIR} + DEPENDS ${MODULE_SOURCE_FILES} ${MODULE_HEADER_FILES} ${BUILD_SOURCE_TARGET} + VERBATIM) + add_custom_target(${MODULE_NAME} ALL DEPENDS ${CMAKE_CURRENT_BINARY_DIR}/${MODULE_NAME}.ko ${ARGV6}) + install(FILES ${CMAKE_CURRENT_BINARY_DIR}/${MODULE_NAME}.ko + DESTINATION ${KERNEL_DIR}/extra + PERMISSIONS OWNER_READ OWNER_WRITE GROUP_READ WORLD_READ) +endmacro(add_kernel_module)
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