bond/CMakeLists.txt

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CMake
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cmake_minimum_required(VERSION 3.10)
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# disable in-source build
set(CMAKE_DISABLE_IN_SOURCE_BUILD ON)
set(CMAKE_DISABLE_SOURCE_CHANGES ON)
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project(bond)
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set(proj bond)
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set(INC ${CMAKE_CURRENT_SOURCE_DIR}/inc)
set(MK ${CMAKE_CURRENT_SOURCE_DIR}/mk)
set(arch amd64)
include(${MK}/${arch}.cmake)
# sanity check
set(TOOLCHAINS
AS
CC
GRUB
LD
DMP)
FOREACH(f IN LISTS TOOLCHAINS)
if(NOT ${f})
message(FATAL_ERROR "Toolchain ${f} cannot be found.")
endif()
endforeach(f)
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set(CC_WARN_IGNORE
-Wno-gnu-statement-expression # this means we can assign the return val of the last statment in a block, useful in MAX, MIN, etc.
-Wno-gnu-zero-variadic-macro-arguments # this enables us to use __VA_ARGS__ in macros
)
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set(CC_FLAGS
-std=c17
-c
-g
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-O0
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-Wall
-Wextra
-Wpedantic
-Werror
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${CC_WARN_IGNORE}
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-ffreestanding
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-I${INC}
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-fno-pic
-fno-stack-protector
${CC_FLAGS_${ARCH}})
set(AS_FLAGS
${AS_FLAGS_${ARCH}})
set(LD_FLAGS
-fuse-ld=${LD}
-nostdlib
-Wl,--fatal-warnings
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-Wl,--build-id=none
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${LD_FLAGS_${ARCH}})
set(PP_FLAGS
-E
-xc
-P
-I${INC}
${PP_FLAGS_${ARCH}})
set(DMP_FLAGS
${DMP_FLAGS_${ARCH}})
set(SUBMODULES
kern
arch
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scripts
test)
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# process submodules
FOREACH(f IN LISTS SUBMODULES)
add_subdirectory(${f})
endforeach(f)
# process dependencies
FOREACH(f IN LISTS SUBMODULES)
set(OBJS ${OBJS} ${OBJS_${f}})
set(TARGETS ${TARGETS} ${TARGET_${f}})
endforeach(f)
# set target names
# Rules for generating the image
set(TARGET ${proj}_elf)
set(OBJ_${TARGET} ${CMAKE_CURRENT_BINARY_DIR}/${proj}.elf)
add_custom_command(
OUTPUT ${OBJ_${TARGET}}
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DEPENDS ${TARGETS} ${OBJS}
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COMMAND ${CC} ${LD_FLAGS} -Wl,-T, ${SCRIPT_LD} -o ${OBJ_${TARGET}} ${OBJS})
add_custom_target(${TARGET} ALL
DEPENDS ${OBJ_${TARGET}})
# Rules for generating the dump
set(TARGET ${proj}_dmp)
set(OBJ_${TARGET} ${CMAKE_CURRENT_BINARY_DIR}/${proj}.dmp)
add_custom_command(
OUTPUT ${OBJ_${TARGET}}
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DEPENDS ${proj}.elf
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COMMAND ${DMP} ${DMP_FLAGS} ${OBJ_${proj}_elf} > ${OBJ_${TARGET}}
)
add_custom_target(${proj}_dmp ALL
DEPENDS ${OBJ_${TARGET}})
# Rules for generating the iso
set(TARGET ${proj}_iso)
set(OBJ_${TARGET} ${CMAKE_CURRENT_BINARY_DIR}/${proj}.iso)
add_custom_command(
OUTPUT ${OBJ_${TARGET}}
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DEPENDS ${proj}.elf
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COMMAND ${CMAKE_COMMAND} -E make_directory ${CMAKE_CURRENT_BINARY_DIR}/tmp_iso
COMMAND ${CMAKE_COMMAND} -E make_directory ${CMAKE_CURRENT_BINARY_DIR}/tmp_iso/boot
COMMAND ${CMAKE_COMMAND} -E make_directory ${CMAKE_CURRENT_BINARY_DIR}/tmp_iso/boot/grub
COMMAND ${CMAKE_COMMAND} -E copy ${OBJ_${proj}_elf} ${CMAKE_CURRENT_BINARY_DIR}/tmp_iso/
COMMAND ${CMAKE_COMMAND} -E copy ${SCRIPT_GRUB} ${CMAKE_CURRENT_BINARY_DIR}/tmp_iso/boot/grub/
COMMAND ${GRUB} -d /usr/lib/grub/i386-pc -o ${OBJ_${TARGET}} ${CMAKE_CURRENT_BINARY_DIR}/tmp_iso
)
add_custom_target(${proj}_iso ALL
DEPENDS ${OBJ_${TARGET}})
# hack for clion not parsing custom targets
if ($ENV{CLION_IDE})
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include_directories(${INC})
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add_executable(kernel ${G_CC_SRC})
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target_compile_options(kernel PRIVATE ${CC_FLAGS})
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endif()
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