79 lines
3.2 KiB
CMake
79 lines
3.2 KiB
CMake
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# Part of the Raspberry-Pi Bare Metal Tutorials
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# Copyright (c) 2015, Brian Sidebotham
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# All rights reserved.
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# Redistribution and use in source and binary forms, with or without
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# modification, are permitted provided that the following conditions are met:
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# 1. Redistributions of source code must retain the above copyright notice,
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# this list of conditions and the following disclaimer.
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# 2. Redistributions in binary form must reproduce the above copyright notice,
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# this list of conditions and the following disclaimer in the
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# documentation and/or other materials provided with the distribution.
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# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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# AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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# ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
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# LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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# CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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# SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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# INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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# CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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# ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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# POSSIBILITY OF SUCH DAMAGE.
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# CMake build environment for the Valvers Raspberry-Pi bare metal tutorials
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# CMake 2.8.10 Documentation: http://www.cmake.org/cmake/help/v2.8.10/cmake.html
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cmake_minimum_required( VERSION 2.8 )
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# Mark the language as C so that CMake doesn't try to test the C++
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# cross-compiler's ability to compile a simple program because that will fail
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project( bare-metal-rpi-kernel C ASM )
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enable_language(C ASM)
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set( TARGET_FILE "kernel")
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set( TARGET_BUILD "${TARGET_FILE}.elf")
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set( TARGET_OUTPUT "${TARGET_FILE}.img")
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# Add any C compiler flags here. The C flags concerned with processor tuning
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# are in the toolchain files toolchain-arm-none-eabi-bcm2835.cmake, etc.
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set( CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -O4" )
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set( CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -Wall" )
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set( CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -nostartfiles" )
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set( CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -I src/includes/" )
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# Set the linker flags so that we use our "custom" linker script
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set( CMAKE_EXE_LINKER_FLAGS "-Wl,-T,src/CMakeLinker.x" )
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AUX_SOURCE_DIRECTORY(src source)
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AUX_SOURCE_DIRECTORY(src/includes/kernel kernelIncludes)
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AUX_SOURCE_DIRECTORY(src/includes/rpi rpiIncludes)
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add_executable( ${TARGET_BUILD}
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src/armStart.S
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${source}
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${kernelIncludes}
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${rpiIncludes}
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)
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set_target_properties( ${TARGET_BUILD}
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PROPERTIES
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ARCHIVE_OUTPUT_DIRECTORY "${CMAKE_BINARY_DIR}/lib"
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LIBRARY_OUTPUT_DIRECTORY "${CMAKE_BINARY_DIR}/lib"
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RUNTIME_OUTPUT_DIRECTORY "${CMAKE_BINARY_DIR}/bin"
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)
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get_target_property(RUNTIME_OUTPUT_DIRECTORY ${TARGET_BUILD} RUNTIME_OUTPUT_DIRECTORY)
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add_custom_command(
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TARGET ${TARGET_BUILD} POST_BUILD
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COMMAND ${CMAKE_OBJCOPY} ${TARGET_BUILD} -O binary ${TARGET_OUTPUT}
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WORKING_DIRECTORY ${RUNTIME_OUTPUT_DIRECTORY}
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COMMENT "Convert the ELF output file to a binary image" )
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