CMakeLists.txt

cmake_minimum_required(VERSION 3.14)

project(zip
  LANGUAGES C
  VERSION "0.3.0")
set(CMAKE_MODULE_PATH "${PROJECT_SOURCE_DIR}/cmake" ${CMAKE_MODULE_PATH})
set(CMAKE_VERBOSE_MAKEFILE ON)

# Enable building tests only if the project is being built as a standalone one
if (CMAKE_CURRENT_SOURCE_DIR STREQUAL CMAKE_SOURCE_DIR)
    option(CMAKE_DISABLE_TESTING "Disable test creation" OFF)
else ()
    option(CMAKE_DISABLE_TESTING "Disable test creation" ON)
endif ()

option(CMAKE_ENABLE_SANITIZERS "Enable zip sanitizers" OFF)
option(ZIP_STATIC_PIC "Build static zip with PIC" ON)
option(ZIP_BUILD_DOCS "Generate API documentation with Doxygen" OFF)

if(ZIP_ENABLE_SHARABLE_FILE_OPEN)
	add_definitions(-DZIP_ENABLE_SHARABLE_FILE_OPEN)
endif()

if(CMAKE_SIZEOF_VOID_P EQUAL 4)
	# large file support
	add_definitions(-D_LARGEFILE_SOURCE -D_FILE_OFFSET_BITS=64)
endif()

# zip
set(SRC src/miniz.h src/zip.h src/zip.c)

add_library(${PROJECT_NAME} ${SRC})
add_library(${PROJECT_NAME}::${PROJECT_NAME} ALIAS ${PROJECT_NAME})

if(ZIP_STATIC_PIC)
  set_property(TARGET ${PROJECT_NAME} PROPERTY POSITION_INDEPENDENT_CODE 1)
endif()

set_property(TARGET ${PROJECT_NAME} PROPERTY C_VISIBILITY_PRESET hidden)
if(BUILD_SHARED_LIBS)
  target_compile_definitions(${PROJECT_NAME}
    PUBLIC ZIP_SHARED
    PRIVATE ZIP_BUILD_SHARED
  )
endif()

target_include_directories(${PROJECT_NAME} PUBLIC
  $<BUILD_INTERFACE:${CMAKE_CURRENT_SOURCE_DIR}/src>
  $<INSTALL_INTERFACE:include>
)

# test
if (NOT CMAKE_DISABLE_TESTING)
  enable_testing()
  add_subdirectory(test)
endif()
if (CMAKE_ENABLE_SANITIZERS)
  find_package(Sanitizers)
  add_sanitizers(${PROJECT_NAME})
endif()

set(CMAKE_C_STANDARD 90)
if (MSVC)
  # Use secure functions by default and suppress warnings about "deprecated" functions
  set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} /D _CRT_SECURE_CPP_OVERLOAD_STANDARD_NAMES=1")
  set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} /D _CRT_SECURE_CPP_OVERLOAD_STANDARD_NAMES_COUNT=1")
  set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} /D _CRT_NONSTDC_NO_WARNINGS=1 /D _CRT_SECURE_NO_WARNINGS=1")

elseif ("${CMAKE_C_COMPILER_ID}" STREQUAL "GNU" OR
        "${CMAKE_C_COMPILER_ID}" STREQUAL "Clang" OR
        "${CMAKE_C_COMPILER_ID}" STREQUAL "AppleClang")
  set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -Wall -Wextra -Werror -pedantic -Wno-implicit-function-declaration")
endif (MSVC)

####
set(CONFIG_INSTALL_DIR "lib/cmake/${PROJECT_NAME}")
set(INCLUDE_INSTALL_DIR "include")

set(GENERATED_DIR "${CMAKE_CURRENT_BINARY_DIR}/generated")

# Configuration
set(VERSION_CONFIG "${GENERATED_DIR}/${PROJECT_NAME}ConfigVersion.cmake")
set(PROJECT_CONFIG "${GENERATED_DIR}/${PROJECT_NAME}Config.cmake")
set(TARGETS_EXPORT_NAME "${PROJECT_NAME}Targets")
set(NAMESPACE "${PROJECT_NAME}::")

# Include module with function 'write_basic_package_version_file'
include(CMakePackageConfigHelpers)

# Note: PROJECT_VERSION is used as a VERSION
write_basic_package_version_file(
    "${VERSION_CONFIG}" COMPATIBILITY SameMajorVersion
)

# Use variables:
#   * TARGETS_EXPORT_NAME
#   * PROJECT_NAME
configure_package_config_file(
    "cmake/Config.cmake.in"
    "${PROJECT_CONFIG}"
    INSTALL_DESTINATION "${CONFIG_INSTALL_DIR}"
)

install(
    FILES "${PROJECT_CONFIG}" "${VERSION_CONFIG}"
    DESTINATION "${CONFIG_INSTALL_DIR}"
)

install(
    EXPORT "${TARGETS_EXPORT_NAME}"
    NAMESPACE "${NAMESPACE}"
    DESTINATION "${CONFIG_INSTALL_DIR}"
)

install(TARGETS ${PROJECT_NAME}
        EXPORT ${TARGETS_EXPORT_NAME}
        RUNTIME DESTINATION bin
        ARCHIVE DESTINATION lib
        LIBRARY DESTINATION lib
        INCLUDES DESTINATION ${INCLUDE_INSTALL_DIR}
)
install(FILES ${PROJECT_SOURCE_DIR}/src/zip.h DESTINATION ${INCLUDE_INSTALL_DIR}/zip)

# uninstall target (https://gitlab.kitware.com/cmake/community/wikis/FAQ#can-i-do-make-uninstall-with-cmake)
if(NOT TARGET uninstall)
    configure_file(
        "${CMAKE_CURRENT_SOURCE_DIR}/cmake/cmake_uninstall.cmake.in"
        "${CMAKE_CURRENT_BINARY_DIR}/cmake/cmake_uninstall.cmake"
        IMMEDIATE @ONLY)

    add_custom_target(uninstall
        COMMAND ${CMAKE_COMMAND} -P ${CMAKE_CURRENT_BINARY_DIR}/cmake/cmake_uninstall.cmake)
endif()

if(ZIP_BUILD_DOCS)
    find_package(Doxygen REQUIRED)
    configure_file(${CMAKE_CURRENT_SOURCE_DIR}/Doxyfile.in ${CMAKE_CURRENT_BINARY_DIR}/Doxyfile @ONLY)
    add_custom_target(doc
        ${DOXYGEN_EXECUTABLE} ${CMAKE_CURRENT_BINARY_DIR}/Doxyfile
        WORKING_DIRECTORY ${CMAKE_CURRENT_BINARY_DIR}
        COMMENT "Generating API documentation with Doxygen" VERBATIM)
endif()