Curle
aba82eaacb
This was a doozy. I had to recompile gcc with a custom target to get it to output the CRT{BEGIN/END}.o files with proper 64 bit relocations.
The CMakeLists.txt file was also edited to allow these files to be linked (thereby actually adding the support) as well as to automatically create the boot image upon build.
54 lines
1.7 KiB
CMake
54 lines
1.7 KiB
CMake
#project config
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cmake_minimum_required(VERSION 3.10)
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# cheat the compile test
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set(CMAKE_TRY_COMPILE_TARGET_TYPE STATIC_LIBRARY)
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SET(CMAKE_SYSTEM_NAME Generic)
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SET(CMAKE_CROSSCOMPILING 1)
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project(chroma)
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SET(src_files
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${CMAKE_SOURCE_DIR}/chroma/kernel.c
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${CMAKE_SOURCE_DIR}/chroma/video/draw.c
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${CMAKE_SOURCE_DIR}/chroma/video/print.c
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${CMAKE_SOURCE_DIR}/chroma/system/cpu.c
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${CMAKE_SOURCE_DIR}/chroma/system/rw.c
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${CMAKE_SOURCE_DIR}/chroma/system/serial.c
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${CMAKE_SOURCE_DIR}/chroma/system/pci.c
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${CMAKE_SOURCE_DIR}/chroma/system/memory/paging.c
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${CMAKE_SOURCE_DIR}/chroma/system/memory/physmem.c
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${CMAKE_SOURCE_DIR}/chroma/system/drivers/keyboard.c
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)
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include_directories("chroma/inc")
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SET(src_no_sse
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${CMAKE_SOURCE_DIR}/chroma/system/interrupts.c
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)
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SET(src_preamble
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${CMAKE_SOURCE_DIR}/global/crt0.o
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${CMAKE_SOURCE_DIR}/global/crti.o
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${CMAKE_SOURCE_DIR}/global/crtbegin.o
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)
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set(src_epilogue
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${CMAKE_SOURCE_DIR}/global/crtend.o
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${CMAKE_SOURCE_DIR}/global/crtn.o
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)
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set_property(SOURCE ${src_no_sse} PROPERTY COMPILE_FLAGS -mgeneral-regs-only)
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add_executable(kernel)
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target_sources(kernel PUBLIC ${src_preamble} PUBLIC ${src_files} PUBLIC ${src_no_sse} PUBLIC ${CMAKE_SOURCE_DIR}/font.o PUBLIC ${src_epilogue})
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target_compile_options(kernel PRIVATE -ffreestanding -O2 -Wall -Wextra -Wall -Werror -pedantic -fPIC -fno-exceptions)
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target_link_options(kernel PRIVATE -T linker.ld -ffreestanding -O2 -nostdlib -nostartfiles -lgcc)
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add_custom_command(
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TARGET kernel
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POST_BUILD
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COMMAND cp ${CMAKE_SOURCE_DIR}/kernel ${CMAKE_SOURCE_DIR}/img/boot/exe
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COMMAND ${CMAKE_SOURCE_DIR}/mkbootimg chroma.json chroma.img
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) |