cmake_minimum_required(VERSION 3.16)
project(ClaudeOS C ASM)

set(CMAKE_C_STANDARD 99)

# We are building a kernel, so we don't want standard libraries
set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -ffreestanding -m32 -fno-pie -fno-pic -fno-builtin -fno-stack-protector -mno-sse -mno-mmx -g -O2 -Wall -Wextra")
set(CMAKE_ASM_FLAGS "${CMAKE_ASM_FLAGS} -m32 -fno-pie -fno-pic")
set(CMAKE_EXE_LINKER_FLAGS "${CMAKE_EXE_LINKER_FLAGS} -m32 -nostdlib -no-pie")

# Define build output directory
set(CMAKE_ARCHIVE_OUTPUT_DIRECTORY ${CMAKE_BINARY_DIR}/lib)
set(CMAKE_LIBRARY_OUTPUT_DIRECTORY ${CMAKE_BINARY_DIR}/lib)
set(CMAKE_RUNTIME_OUTPUT_DIRECTORY ${CMAKE_BINARY_DIR}/bin)

add_subdirectory(src)

# Create output directories
file(MAKE_DIRECTORY ${CMAKE_SOURCE_DIR}/release)
file(MAKE_DIRECTORY ${CMAKE_BINARY_DIR}/isodir/boot/grub)

# Create grub.cfg for ISO
file(WRITE ${CMAKE_BINARY_DIR}/isodir/boot/grub/grub.cfg "set timeout=0\nset default=0\nsearch --set=root --file /boot/kernel.bin\nmenuentry \"ClaudeOS\" { multiboot /boot/kernel.bin }")


# ISO Generation
add_custom_target(iso ALL
    COMMAND ${CMAKE_COMMAND} -E copy ${CMAKE_RUNTIME_OUTPUT_DIRECTORY}/kernel ${CMAKE_BINARY_DIR}/isodir/boot/kernel.bin
    COMMAND grub-mkrescue -o ${CMAKE_SOURCE_DIR}/release/claude-os.iso ${CMAKE_BINARY_DIR}/isodir
    DEPENDS kernel
    COMMENT "Generating bootable ISO image"
)

# Test target
add_custom_target(test_images
    COMMAND sh ${CMAKE_SOURCE_DIR}/test_images.sh
    DEPENDS iso
    COMMENT "Testing generated images in QEMU"
    WORKING_DIRECTORY ${CMAKE_SOURCE_DIR}
)