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cmake_minimum_required(VERSION 3.0)
project(Melvix)
enable_language(ASM)
# set(CMAKE_VERBOSE_MAKEFILE on)
set(CMAKE_COLOR_MAKEFILE on)
set(CMAKE_EXPORT_COMPILE_COMMANDS on)
find_program(CCACHE_FOUND ccache)
if(CCACHE_FOUND)
set_property(GLOBAL PROPERTY RULE_LAUNCH_COMPILE ccache)
set_property(GLOBAL PROPERTY RULE_LAUNCH_LINK ccache)
endif(CCACHE_FOUND)
# Melvix variables
set(NETWORK "rtl8139")
# Compiler and linker
set(CMAKE_SHARED_LIBRARY_LINK_C_FLAGS " ")
set(CMAKE_C_COMPILER "${CMAKE_CURRENT_SOURCE_DIR}/cross/opt/bin/i686-elf-gcc")
set(CMAKE_ASM_COMPILER "nasm")
set(CMAKE_LINKER "${CMAKE_CURRENT_SOURCE_DIR}/cross/opt/bin/i686-elf-gcc")
set(CMAKE_ASM_LINKER_PREFERENCE ${CMAKE_LINKER})
set(CMAKE_C_LINKER_PREFERENCE ${CMAKE_LINKER})
# Compiler and linker flags
set(CMAKE_C_FLAGS "-Wall -Wno-int-conversion -fstrength-reduce -fomit-frame-pointer -finline-functions -nostdlib -ffreestanding -std=gnu99 -g -ggdb -c")
set(CMAKE_EXE_LINKER_FLAGS "-ffreestanding -O2 -nostdlib -g -ggdb")
set(CMAKE_ASM_COMPILE_OBJECT "<CMAKE_ASM_COMPILER> <SOURCE> -o <OBJECT> -f elf32 -O0")
set(CMAKE_C_LINK_EXECUTABLE "<CMAKE_LINKER> ${CMAKE_EXE_LINKER_FLAGS} <OBJECTS> -o <TARGET> <LINK_LIBRARIES>")
set(CMAKE_ASM_LINK_EXECUTABLE "<CMAKE_LINKER> ${CMAKE_EXE_LINKER_FLAGS} <OBJECTS> -o <TARGET> <LINK_LIBRARIES>")
# Recursive sources
file(GLOB_RECURSE kernel_sources src/kernel/*.c src/kernel/*.asm)
file(GLOB_RECURSE resources_sources src/resources/*.c)
file(GLOB_RECURSE user_sources src/userspace/*.c src/userspace/*.asm)
# KERNEL
add_executable(kernel ${kernel_sources})
target_include_directories(kernel PRIVATE "src")
set_target_properties(kernel PROPERTIES OUTPUT_NAME "${CMAKE_CURRENT_SOURCE_DIR}/build/kernel.bin")
target_compile_options(kernel PRIVATE "-D ${NETWORK}")
target_link_libraries(kernel PRIVATE "-T ${CMAKE_CURRENT_SOURCE_DIR}/src/kernel/linker.ld")
# RESOURCES
add_executable(resources ${resources_sources})
set_target_properties(resources PROPERTIES OUTPUT_NAME "${CMAKE_CURRENT_SOURCE_DIR}/build/font.o")
add_custom_command(
TARGET resources POST_BUILD
COMMAND cross/opt/bin/i686-elf-objcopy -O binary build/font.o iso/font.bin
WORKING_DIRECTORY ${CMAKE_CURRENT_SOURCE_DIR}
)
# USERSPACE
add_executable(user ${user_sources})
target_include_directories(user PUBLIC "src/userspace/")
set_target_properties(user PROPERTIES OUTPUT_NAME "${CMAKE_CURRENT_SOURCE_DIR}/build/user.o")
add_custom_command(
TARGET user POST_BUILD
COMMAND cross/opt/bin/i686-elf-objcopy -O binary build/user.o iso/user.bin
WORKING_DIRECTORY ${CMAKE_CURRENT_SOURCE_DIR}
)
# Dependencies
add_dependencies(kernel resources user)
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