cmake_minimum_required(VERSION 3.14)

project(
	SimpleIni
	VERSION 4.25
	DESCRIPTION "Cross-platform C++ library providing a simple API to read and write INI-style configuration files"
	LANGUAGES CXX C
)

option(SIMPLEINI_USE_SYSTEM_GTEST "Use system GoogleTest dependency" OFF)

# disable in-source builds
if(CMAKE_SOURCE_DIR STREQUAL CMAKE_BINARY_DIR)
	message(FATAL_ERROR "In-source builds are not allowed, use cmake -S . -B build.")
endif()

set(EXPORT_NAMESPACE "${PROJECT_NAME}::")

# SimpleIni is a header-only library. The ConvertUTF.c/h files in this repository
# are only required if users define SI_CONVERT_GENERIC. In that case, users must
# manually copy and compile ConvertUTF.c into their own projects.
add_library(${PROJECT_NAME} INTERFACE)
add_library(${EXPORT_NAMESPACE}${PROJECT_NAME} ALIAS ${PROJECT_NAME})
target_include_directories(${PROJECT_NAME} INTERFACE
    $<BUILD_INTERFACE:${CMAKE_CURRENT_SOURCE_DIR}>
    $<INSTALL_INTERFACE:${CMAKE_INSTALL_INCLUDEDIR}>
)

include(GNUInstallDirs)

include(CMakePackageConfigHelpers)
write_basic_package_version_file(${CMAKE_CURRENT_BINARY_DIR}/${PROJECT_NAME}ConfigVersion.cmake
	VERSION ${PROJECT_VERSION}
	COMPATIBILITY SameMajorVersion
)
configure_package_config_file(${PROJECT_NAME}Config.cmake.in
	${CMAKE_CURRENT_BINARY_DIR}/${PROJECT_NAME}Config.cmake
	INSTALL_DESTINATION ${CMAKE_INSTALL_LIBDIR}/cmake/${PROJECT_NAME}
)

install(FILES SimpleIni.h
	DESTINATION ${CMAKE_INSTALL_INCLUDEDIR}
)

install(TARGETS ${PROJECT_NAME}
    EXPORT SimpleIniTargets
)

install(EXPORT SimpleIniTargets
    FILE SimpleIniTargets.cmake
    NAMESPACE ${EXPORT_NAMESPACE}
    DESTINATION ${CMAKE_INSTALL_LIBDIR}/cmake/${PROJECT_NAME}
)

install(FILES
    ${CMAKE_CURRENT_BINARY_DIR}/${PROJECT_NAME}Config.cmake
    ${CMAKE_CURRENT_BINARY_DIR}/${PROJECT_NAME}ConfigVersion.cmake
    DESTINATION ${CMAKE_INSTALL_LIBDIR}/cmake/${PROJECT_NAME}
)

# only build tests when top level
if(CMAKE_PROJECT_NAME STREQUAL PROJECT_NAME)
	include(CTest)
	if(BUILD_TESTING)
		add_subdirectory(tests)
	endif()
endif()