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# Regard that file as root of whole project
# which include farther subprojects source codes
# Expected input variables:
# ARCH: type of architecture
cmake_minimum_required(VERSION 3.25)
project(ObjectiveProject LANGUAGES CXX ASM_NASM)
set(ObjectiveProject_CXX_FLAGS
$<$<CONFIG:Debug>:-Wall -Wextra -ggdb -g3 -O0>
$<$<CONFIG:Release>:-Wall -Werror>
-ffreestanding
-nostdinc
-nostdlib
-fno-rtti
-mgeneral-regs-only
)
set(ObjectiveProject_ASM_NASM_FLAGS
$<$<CONFIG:Debug>:-g -O0 -Wall>
$<$<CONFIG:RELEASE>:-Wall>
)
list(APPEND CMAKE_MODULE_PATH
"${ObjectiveProject_SOURCE_DIR}/cmake/module"
)
include(metadata)
set(CMAKE_CXX_STANDARD 20)
set(CMAKE_CXX_STANDARD_REQUIRED ON)
set(CMAKE_CXX_EXTENSIONS OFF)
add_executable(Objective)
# Set architecture by default if not present
if(NOT ARCH IN_LIST OBJECTIVE_SUPPORTED_PROCESSORS)
list(GET OBJECTIVE_SUPPORTED_PROCESSORS 0 ARCH)
endif()
# Create target with compiler requirements (include directories, flags and etc)
add_library(CXX_COMPILER_REQUIREMENTS INTERFACE)
add_library(ASM_NASM_COMPILER_REQUIREMENTS INTERFACE)
# Target with linker requirements
add_library(CXX_LINKER_REQUIREMENTS INTERFACE)
target_link_options(CXX_LINKER_REQUIREMENTS INTERFACE
${ObjectiveProject_CXX_FLAGS}
)
target_link_libraries(CXX_LINKER_REQUIREMENTS INTERFACE
gcc
)
# Set compiler flags
if(CMAKE_CXX_COMPILER_ID MATCHES "Clang|GNU")
target_compile_options(CXX_COMPILER_REQUIREMENTS INTERFACE
${ObjectiveProject_CXX_FLAGS}
)
endif()
target_compile_options(ASM_NASM_COMPILER_REQUIREMENTS INTERFACE
${ObjectiveProject_ASM_NASM_FLAGS}
)
target_include_directories(CXX_COMPILER_REQUIREMENTS
INTERFACE
${ObjectiveProject_SOURCE_DIR}/include
)
# Subscribe compiler requirements to Object executable
target_link_libraries(Objective PUBLIC CXX_COMPILER_REQUIREMENTS)
add_subdirectory(arch)
add_subdirectory(kernel)
add_subdirectory(drivers)
add_subdirectory(include)
add_subdirectory(libgcc)
target_sources(Objective PRIVATE
$<TARGET_OBJECTS:Boot>
)
target_link_libraries(Objective PRIVATE
CRTI
Architecture
Kernel
Drivers
CRTN
)
target_link_libraries(Objective PRIVATE CXX_LINKER_REQUIREMENTS)
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