cmake_minimum_required(VERSION 3.11 FATAL_ERROR)
cmake_policy(VERSION 3.11)

option(GLM_QUIET "No CMake Message" OFF)
option(GLM_BUILD_SHARED_LIBS "Build shared library" ON)
option(GLM_BUILD_STATIC_LIBS "Build static library" ON)

option(GLM_ENABLE_SIMD_SSE2 "Enable SSE2 optimizations" OFF)
option(GLM_ENABLE_SIMD_SSE3 "Enable SSE3 optimizations" OFF)
option(GLM_ENABLE_SIMD_SSSE3 "Enable SSSE3 optimizations" OFF)
option(GLM_ENABLE_SIMD_SSE4_1 "Enable SSE 4.1 optimizations" OFF)
option(GLM_ENABLE_SIMD_SSE4_2 "Enable SSE 4.2 optimizations" OFF)
option(GLM_ENABLE_SIMD_AVX "Enable AVX optimizations" OFF)
option(GLM_ENABLE_SIMD_AVX2 "Enable AVX2 optimizations" OFF)
option(GLM_FORCE_PURE "Force 'pure' instructions" OFF)

option(GLM_ENABLE_CXX_98 "Enable C++ 98" OFF)
option(GLM_ENABLE_CXX_11 "Enable C++ 11" OFF)
option(GLM_ENABLE_CXX_14 "Enable C++ 14" OFF)
option(GLM_ENABLE_CXX_17 "Enable C++ 17" OFF)
option(GLM_ENABLE_CXX_20 "Enable C++ 20" OFF)
option(GLM_ENABLE_CXX_23 "Enable C++ 23" OFF)

set(CMAKE_CXX_STANDARD_REQUIRED ON)

if(GLM_ENABLE_CXX_23)
	set(CMAKE_CXX_STANDARD 23)
	add_definitions(-DGLM_FORCE_CXX23)
	if(NOT GLM_QUIET)
		message(STATUS "GLM: Build with C++23 features")
	endif()

elseif(GLM_ENABLE_CXX_20)
	set(CMAKE_CXX_STANDARD 20)
	add_definitions(-DGLM_FORCE_CXX20)
	if(NOT GLM_QUIET)
		message(STATUS "GLM: Build with C++20 features")
	endif()

elseif(GLM_ENABLE_CXX_17)
	set(CMAKE_CXX_STANDARD 17)
	add_definitions(-DGLM_FORCE_CXX17)
	if(NOT GLM_QUIET)
		message(STATUS "GLM: Build with C++17 features")
	endif()

elseif(GLM_ENABLE_CXX_14)
	set(CMAKE_CXX_STANDARD 14)
	add_definitions(-DGLM_FORCE_CXX14)
	if(NOT GLM_QUIET)
		message(STATUS "GLM: Build with C++14 features")
	endif()

elseif(GLM_ENABLE_CXX_11)
	set(CMAKE_CXX_STANDARD 11)
	add_definitions(-DGLM_FORCE_CXX11)
	if(NOT GLM_QUIET)
		message(STATUS "GLM: Build with C++11 features")
	endif()

elseif(GLM_ENABLE_CXX_98)
	set(CMAKE_CXX_STANDARD 98)
	add_definitions(-DGLM_FORCE_CXX98)
	if(NOT GLM_QUIET)
		message(STATUS "GLM: Build with C++98 features")
	endif()
endif()

option(GLM_ENABLE_LANG_EXTENSIONS "Enable language extensions" OFF)

option(GLM_DISABLE_AUTO_DETECTION "Enable language extensions" OFF)

if(GLM_DISABLE_AUTO_DETECTION)
	add_definitions(-DGLM_FORCE_PLATFORM_UNKNOWN -DGLM_FORCE_COMPILER_UNKNOWN -DGLM_FORCE_ARCH_UNKNOWN -DGLM_FORCE_CXX_UNKNOWN)
endif()

if(GLM_ENABLE_LANG_EXTENSIONS)
	set(CMAKE_CXX_EXTENSIONS ON)
	if((CMAKE_CXX_COMPILER_ID MATCHES "Clang") OR (CMAKE_CXX_COMPILER_ID MATCHES "GNU"))
		add_compile_options(-fms-extensions)
	endif()
	message(STATUS "GLM: Build with C++ language extensions")
else()
	set(CMAKE_CXX_EXTENSIONS OFF)
	if(CMAKE_CXX_COMPILER_ID MATCHES "MSVC")
		add_compile_options(/Za)
		if(MSVC15)
			add_compile_options(/permissive-)
		endif()
	endif()
endif()

option(GLM_ENABLE_FAST_MATH "Enable fast math optimizations" OFF)
if(GLM_ENABLE_FAST_MATH)
	if(NOT GLM_QUIET)
		message(STATUS "GLM: Build with fast math optimizations")
	endif()

	if((CMAKE_CXX_COMPILER_ID MATCHES "Clang") OR (CMAKE_CXX_COMPILER_ID MATCHES "GNU"))
		add_compile_options(-ffast-math)

	elseif(CMAKE_CXX_COMPILER_ID MATCHES "MSVC")
		add_compile_options(/fp:fast)
	endif()
else()
	if(CMAKE_CXX_COMPILER_ID MATCHES "MSVC")
		add_compile_options(/fp:precise)
	endif()
endif()

option(GLM_TEST_ENABLE "Build unit tests" ON)

if(GLM_FORCE_PURE)
	add_definitions(-DGLM_FORCE_PURE)

	if(CMAKE_CXX_COMPILER_ID MATCHES "GNU")
		add_compile_options(-mfpmath=387)
	endif()
	message(STATUS "GLM: No SIMD instruction set")

elseif(GLM_ENABLE_SIMD_AVX2)
	add_definitions(-DGLM_FORCE_INTRINSICS)

	if((CMAKE_CXX_COMPILER_ID MATCHES "GNU") OR (CMAKE_CXX_COMPILER_ID MATCHES "Clang"))
		add_compile_options(-mavx2)
	elseif(CMAKE_CXX_COMPILER_ID MATCHES "Intel")
		add_compile_options(/QxAVX2)
	elseif(CMAKE_CXX_COMPILER_ID MATCHES "MSVC")
		add_compile_options(/arch:AVX2)
	endif()
	message(STATUS "GLM: AVX2 instruction set")

elseif(GLM_ENABLE_SIMD_AVX)
	add_definitions(-DGLM_FORCE_INTRINSICS)

	if((CMAKE_CXX_COMPILER_ID MATCHES "GNU") OR (CMAKE_CXX_COMPILER_ID MATCHES "Clang"))
		add_compile_options(-mavx)
	elseif(CMAKE_CXX_COMPILER_ID MATCHES "Intel")
		add_compile_options(/QxAVX)
	elseif(CMAKE_CXX_COMPILER_ID MATCHES "MSVC")
		add_compile_options(/arch:AVX)
	endif()
	message(STATUS "GLM: AVX instruction set")

elseif(GLM_ENABLE_SIMD_SSE4_2)
	add_definitions(-DGLM_FORCE_INTRINSICS)

	if((CMAKE_CXX_COMPILER_ID MATCHES "GNU") OR (CMAKE_CXX_COMPILER_ID MATCHES "Clang"))
		add_compile_options(-msse4.2)
	elseif(CMAKE_CXX_COMPILER_ID MATCHES "Intel")
		add_compile_options(/QxSSE4.2)
	elseif((CMAKE_CXX_COMPILER_ID MATCHES "MSVC") AND NOT CMAKE_CL_64)
		add_compile_options(/arch:SSE2) # VC doesn't support SSE4.2
	endif()
	message(STATUS "GLM: SSE4.2 instruction set")

elseif(GLM_ENABLE_SIMD_SSE4_1)
	add_definitions(-DGLM_FORCE_INTRINSICS)

	if((CMAKE_CXX_COMPILER_ID MATCHES "GNU") OR (CMAKE_CXX_COMPILER_ID MATCHES "Clang"))
		add_compile_options(-msse4.1)
	elseif(CMAKE_CXX_COMPILER_ID MATCHES "Intel")
		add_compile_options(/QxSSE4.1)
	elseif((CMAKE_CXX_COMPILER_ID MATCHES "MSVC") AND NOT CMAKE_CL_64)
		add_compile_options(/arch:SSE2) # VC doesn't support SSE4.1
	endif()
	message(STATUS "GLM: SSE4.1 instruction set")

elseif(GLM_ENABLE_SIMD_SSSE3)
	add_definitions(-DGLM_FORCE_INTRINSICS)

	if((CMAKE_CXX_COMPILER_ID MATCHES "GNU") OR (CMAKE_CXX_COMPILER_ID MATCHES "Clang"))
		add_compile_options(-mssse3)
	elseif(CMAKE_CXX_COMPILER_ID MATCHES "Intel")
		add_compile_options(/QxSSSE3)
	elseif((CMAKE_CXX_COMPILER_ID MATCHES "MSVC") AND NOT CMAKE_CL_64)
		add_compile_options(/arch:SSE2) # VC doesn't support SSSE3
	endif()
	message(STATUS "GLM: SSSE3 instruction set")

elseif(GLM_ENABLE_SIMD_SSE3)
	add_definitions(-DGLM_FORCE_INTRINSICS)

	if((CMAKE_CXX_COMPILER_ID MATCHES "GNU") OR (CMAKE_CXX_COMPILER_ID MATCHES "Clang"))
		add_compile_options(-msse3)
	elseif(CMAKE_CXX_COMPILER_ID MATCHES "Intel")
		add_compile_options(/QxSSE3)
	elseif((CMAKE_CXX_COMPILER_ID MATCHES "MSVC") AND NOT CMAKE_CL_64)
		add_compile_options(/arch:SSE2) # VC doesn't support SSE3
	endif()
	message(STATUS "GLM: SSE3 instruction set")

elseif(GLM_ENABLE_SIMD_SSE2)
	add_definitions(-DGLM_FORCE_INTRINSICS)

	if((CMAKE_CXX_COMPILER_ID MATCHES "GNU") OR (CMAKE_CXX_COMPILER_ID MATCHES "Clang"))
		add_compile_options(-msse2)
	elseif(CMAKE_CXX_COMPILER_ID MATCHES "Intel")
		add_compile_options(/QxSSE2)
	elseif((CMAKE_CXX_COMPILER_ID MATCHES "MSVC") AND NOT CMAKE_CL_64)
		add_compile_options(/arch:SSE2)
	endif()
	message(STATUS "GLM: SSE2 instruction set")
endif()

# Compiler and default options

if(CMAKE_CXX_COMPILER_ID MATCHES "Clang")
	if(NOT GLM_QUIET)
		message("GLM: Clang - ${CMAKE_CXX_COMPILER_ID} compiler")
	endif()

	add_compile_options(-Werror -Weverything)
	add_compile_options(-Wno-c++98-compat -Wno-c++98-compat-pedantic -Wno-c++11-long-long -Wno-padded -Wno-gnu-anonymous-struct -Wno-nested-anon-types)
    add_compile_options(-Wno-undefined-reinterpret-cast -Wno-sign-conversion -Wno-unused-variable -Wno-missing-prototypes -Wno-unreachable-code -Wno-missing-variable-declarations -Wno-sign-compare -Wno-global-constructors -Wno-unused-macros -Wno-format-nonliteral -Wno-float-equal)

elseif(CMAKE_CXX_COMPILER_ID MATCHES "GNU")
	if(NOT GLM_QUIET)
		message("GLM: GCC - ${CMAKE_CXX_COMPILER_ID} compiler")
	endif()

	add_compile_options(-O2)
	add_compile_options(-Wno-long-long)

elseif(CMAKE_CXX_COMPILER_ID MATCHES "Intel")
	if(NOT GLM_QUIET)
		message("GLM: Intel - ${CMAKE_CXX_COMPILER_ID} compiler")
	endif()

elseif(CMAKE_CXX_COMPILER_ID MATCHES "MSVC")
	if(NOT GLM_QUIET)
		message("GLM: Visual C++ - ${CMAKE_CXX_COMPILER_ID} compiler")
	endif()

	add_compile_options(/W4 /WX)
	add_compile_options(/wd4309 /wd4324 /wd4389 /wd4127 /wd4267 /wd4146 /wd4201 /wd4464 /wd4514 /wd4701 /wd4820 /wd4365)
	add_definitions(-D_CRT_SECURE_NO_WARNINGS)
endif()

file(READ "glm/detail/setup.hpp" GLM_SETUP_FILE)
string(REGEX MATCH "#define[ ]+GLM_VERSION_MAJOR[ ]+([0-9]+)" _ ${GLM_SETUP_FILE})
set(GLM_VERSION_MAJOR "${CMAKE_MATCH_1}")
string(REGEX MATCH "#define[ ]+GLM_VERSION_MINOR[ ]+([0-9]+)" _ ${GLM_SETUP_FILE})
set(GLM_VERSION_MINOR "${CMAKE_MATCH_1}")
string(REGEX MATCH "#define[ ]+GLM_VERSION_PATCH[ ]+([0-9]+)" _ ${GLM_SETUP_FILE})
set(GLM_VERSION_PATCH "${CMAKE_MATCH_1}")
string(REGEX MATCH "#define[ ]+GLM_VERSION_REVISION[ ]+([0-9]+)" _ ${GLM_SETUP_FILE})
set(GLM_VERSION_REVISION "${CMAKE_MATCH_1}")

set(GLM_VERSION ${GLM_VERSION_MAJOR}.${GLM_VERSION_MINOR}.${GLM_VERSION_PATCH}.${GLM_VERSION_REVISION})
project(glm VERSION ${GLM_VERSION} LANGUAGES CXX)
message(STATUS "GLM: Version " ${GLM_VERSION})

add_subdirectory(glm)
add_library(glm::glm ALIAS glm)

if(${CMAKE_SOURCE_DIR} STREQUAL ${CMAKE_CURRENT_SOURCE_DIR})

	include(CPack)
	install(DIRECTORY glm DESTINATION ${CMAKE_INSTALL_INCLUDEDIR} PATTERN "CMakeLists.txt" EXCLUDE)
	install(EXPORT glm FILE glmConfig.cmake DESTINATION ${CMAKE_INSTALL_LIBDIR}/cmake/glm NAMESPACE glm::)
	include(CMakePackageConfigHelpers)
	write_basic_package_version_file("glmConfigVersion.cmake" COMPATIBILITY AnyNewerVersion)
	install(FILES ${CMAKE_CURRENT_BINARY_DIR}/glmConfigVersion.cmake DESTINATION ${CMAKE_INSTALL_LIBDIR}/cmake/glm)

	include(CTest)
	if(BUILD_TESTING)
		add_subdirectory(test)
	endif()

endif(${CMAKE_SOURCE_DIR} STREQUAL ${CMAKE_CURRENT_SOURCE_DIR})

if (NOT TARGET uninstall)
configure_file(cmake/cmake_uninstall.cmake.in
               cmake_uninstall.cmake IMMEDIATE @ONLY)

add_custom_target(uninstall
                  "${CMAKE_COMMAND}" -P
                  "${CMAKE_BINARY_DIR}/cmake_uninstall.cmake")
endif()