# SPDX-License-Identifier: BSD-2-Clause
#
# daedalus-v4l2 userspace daemon — CMake build.
#
# Notes:
#   - FFmpeg is dlopen'd at runtime (Option γ), so we link only
#     -ldl + -lpthread.  Headers from libavformat-dev /
#     libavcodec-dev / libavutil-dev are used at compile time
#     for struct definitions.
#   - Strict warnings enforced.

cmake_minimum_required(VERSION 3.20)
project(daedalus_v4l2_daemon C)

set(CMAKE_C_STANDARD 11)
set(CMAKE_C_STANDARD_REQUIRED ON)

if (NOT CMAKE_BUILD_TYPE)
	set(CMAKE_BUILD_TYPE Release)
endif()

add_compile_options(-Wall -Wextra -Wpedantic
		    -Wno-unused-parameter)

# FFmpeg headers (we dlopen the libs but include the headers for
# struct definitions).  pkg-config is the canonical way.
find_package(PkgConfig REQUIRED)
pkg_check_modules(FFMPEG REQUIRED IMPORTED_TARGET
	libavformat libavcodec libavutil)

add_executable(daedalus_v4l2_daemon
	src/main.c
	src/ffmpeg_loader.c
	src/log.c
	src/parser.c
)

target_include_directories(daedalus_v4l2_daemon
	PRIVATE
		src
		${FFMPEG_INCLUDE_DIRS}
)

# dl for dlopen, pthread for future threading work.
target_link_libraries(daedalus_v4l2_daemon
	PRIVATE
		dl
		pthread
)

install(TARGETS daedalus_v4l2_daemon
	RUNTIME DESTINATION /usr/local/bin)