CMakeLists.txt

# Copyright 2021-2025 Nikita Fediuchin. All rights reserved.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
#     http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.

cmake_minimum_required(VERSION 3.16)

if(CMAKE_SOURCE_DIR STREQUAL CMAKE_BINARY_DIR)
	message(FATAL_ERROR "Prevented in-tree build")
endif()

if(TARGET pack-static)
	return()
endif()

project(pack VERSION 2.0.4 LANGUAGES C
	DESCRIPTION "Runtime optimized multi-platform data packing \
 		library for realtime game resources loading"
	HOMEPAGE_URL "https://github.com/cfnptr/pack")

set(CMAKE_C_STANDARD 99)
set(CMAKE_C_STANDARD_REQUIRED TRUE)

option(PACK_BUILD_SHARED "Build Pack shared library" ON)
option(PACK_BUILD_UTILITIES "Build Pack utility programs" ON)
option(PACK_BUILD_TESTS "Build Pack library tests" ON)

set(MPIO_BUILD_SHARED OFF CACHE BOOL "" FORCE)
set(MPIO_BUILD_TESTS OFF CACHE BOOL "" FORCE)
add_subdirectory(libraries/mpio)

set(ZSTD_MULTITHREAD_SUPPORT OFF CACHE BOOL "" FORCE)
set(ZSTD_BUILD_PROGRAMS OFF CACHE BOOL "" FORCE)
set(ZSTD_BUILD_TESTS OFF CACHE BOOL "" FORCE)
set(ZSTD_BUILD_SHARED OFF CACHE BOOL "" FORCE)
add_subdirectory(libraries/zstd/build/cmake)

include(TestBigEndian)
TEST_BIG_ENDIAN(IS_BIG_ENDIAN)

if(IS_BIG_ENDIAN)
	set(PACK_LITTLE_ENDIAN 0)
else()
	set(PACK_LITTLE_ENDIAN 1)
endif()

configure_file(cmake/defines.h.in include/pack/defines.h)
set(PACK_SOURCES source/common.c source/reader.c source/writer.c)
	
set(PACK_LINK_LIBRARIES mpio-static libzstd_static)
set(PACK_INCLUDE_DIRECTORIES
	${PROJECT_BINARY_DIR}/include ${PROJECT_SOURCE_DIR}/include
	${PROJECT_SOURCE_DIR}/wrappers/cpp ${PROJECT_SOURCE_DIR}/libraries/zstd/lib)

add_library(pack-static STATIC ${PACK_SOURCES})
target_link_libraries(pack-static PUBLIC ${PACK_LINK_LIBRARIES})
target_include_directories(pack-static PUBLIC ${PACK_INCLUDE_DIRECTORIES})

if(PACK_BUILD_SHARED)
	add_library(pack-shared SHARED ${PACK_SOURCES})
	set_target_properties(pack-shared PROPERTIES
		OUTPUT_NAME "pack" WINDOWS_EXPORT_ALL_SYMBOLS ON)
	target_link_libraries(pack-shared PUBLIC ${PACK_LINK_LIBRARIES})
	target_include_directories(pack-shared PUBLIC ${PACK_INCLUDE_DIRECTORIES})
endif()

if(PACK_BUILD_UTILITIES)
	add_executable(packer utilities/packer.c)
	target_link_libraries(packer PRIVATE pack-static)
	target_include_directories(packer PRIVATE
		${PROJECT_BINARY_DIR}/include ${PROJECT_SOURCE_DIR}/include)

	add_executable(unpacker utilities/unpacker.c)
	target_link_libraries(unpacker PRIVATE pack-static)
	target_include_directories(unpacker PRIVATE
		${PROJECT_BINARY_DIR}/include ${PROJECT_SOURCE_DIR}/include)

	add_executable(pack-info utilities/pack_info.c)
	target_link_libraries(pack-info PRIVATE pack-static)
	target_include_directories(pack-info PRIVATE
		${PROJECT_BINARY_DIR}/include ${PROJECT_SOURCE_DIR}/include)
		
	if(CMAKE_BUILD_TYPE STREQUAL "Release" AND
		(CMAKE_SYSTEM_NAME STREQUAL "Linux" OR
		CMAKE_SYSTEM_NAME STREQUAL "Darwin"))

		add_custom_command(TARGET packer POST_BUILD
			COMMAND strip "$<TARGET_FILE:packer>" VERBATIM)
		add_custom_command(TARGET unpacker POST_BUILD
			COMMAND strip "$<TARGET_FILE:unpacker>" VERBATIM)
		add_custom_command(TARGET pack-info POST_BUILD
			COMMAND strip "$<TARGET_FILE:pack-info>" VERBATIM)
	endif()
endif()

if(PACK_BUILD_TESTS)
	enable_testing()

	add_executable(TestPackPacker tests/test_packer.c)
	target_link_libraries(TestPackPacker PUBLIC pack-static)
	add_test(NAME TestPackPacker COMMAND TestPackPacker)
endif()