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# Copyright 2018 The Amber Authors.
#
# 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 3.0)
if (POLICY CMP0048)
cmake_policy(SET CMP0048 NEW)
endif()
if (POLICY CMP0054)
# Avoid dereferencing variables or interpret keywords that have been
# quoted or bracketed.
# https://cmake.org/cmake/help/v3.1/policy/CMP0054.html
cmake_policy(SET CMP0054 NEW)
endif()
project(amber)
enable_testing()
set(CMAKE_RUNTIME_OUTPUT_DIRECTORY ${PROJECT_BINARY_DIR})
set(CMAKE_POSITION_INDEPENDENT_CODE ON)
if (${AMBER_USE_CLSPV})
set(CMAKE_CXX_STANDARD 14)
else()
set(CMAKE_CXX_STANDARD 11)
endif()
include(CheckIncludeFile)
include(GNUInstallDirs)
option(AMBER_SKIP_TESTS
"Skip building tests along with the library" ${AMBER_SKIP_TESTS})
option(AMBER_SKIP_SPIRV_TOOLS
"Skip building spirv-tools into the library" ${AMBER_SKIP_SPIRV_TOOLS})
option(AMBER_SKIP_SHADERC
"Skip building Shaderc into the library" ${AMBER_SKIP_SHADERC})
option(AMBER_SKIP_SAMPLES
"Skip building sample application" ${AMBER_SKIP_SAMPLES})
option(AMBER_SKIP_LODEPNG
"Skip building lodepng into the library" ${AMBER_SKIP_LODEPNG})
option(AMBER_USE_DXC "Enable DXC integration" ${AMBER_USE_DXC})
option(AMBER_USE_LOCAL_VULKAN "Build with vulkan in third_party" OFF)
option(AMBER_USE_CLSPV "Build with Clspv support" OFF)
option(AMBER_ENABLE_SWIFTSHADER
"Build using SwiftShader" ${AMBER_ENABLE_SWIFTSHADER})
if(WIN32)
# On Windows, CMake by default compiles with the shared CRT.
# Default it to the static CRT.
option(AMBER_ENABLE_SHARED_CRT
"Amber: Use the shared CRT with MSVC instead of the static CRT"
${AMBER_ENABLE_SHARED_CRT})
endif(WIN32)
if (${AMBER_SKIP_SPIRV_TOOLS})
set(AMBER_ENABLE_SPIRV_TOOLS FALSE)
set(AMBER_ENABLE_SHADERC FALSE)
else()
set(AMBER_ENABLE_SPIRV_TOOLS TRUE)
if (${AMBER_SKIP_SHADERC})
set(AMBER_ENABLE_SHADERC FALSE)
else()
set(AMBER_ENABLE_SHADERC TRUE)
endif()
endif()
if (${AMBER_SKIP_TESTS})
set(AMBER_ENABLE_TESTS FALSE)
else()
set(AMBER_ENABLE_TESTS TRUE)
endif()
if (${AMBER_SKIP_SAMPLES})
set(AMBER_ENABLE_SAMPLES FALSE)
else()
set(AMBER_ENABLE_SAMPLES TRUE)
endif()
if (${AMBER_SKIP_LODEPNG})
set(AMBER_ENABLE_LODEPNG FALSE)
else()
set(AMBER_ENABLE_LODEPNG TRUE)
endif()
if (${AMBER_ENABLE_SWIFTSHADER})
# Swiftshader requires the loader to be built.
set(AMBER_USE_LOCAL_VULKAN TRUE)
endif()
if (${AMBER_USE_DXC})
set(AMBER_ENABLE_DXC TRUE)
else()
set(AMBER_ENABLE_DXC FALSE)
endif()
if (${AMBER_USE_CLSPV})
enable_language(ASM)
set(AMBER_ENABLE_CLSPV TRUE)
set(AMBER_ENABLE_SPIRV_TOOLS TRUE)
else()
set(AMBER_ENABLE_CLSPV FALSE)
endif()
message(STATUS "Using python3")
find_package(PythonInterp 3 REQUIRED)
message(STATUS "Amber enable SPIRV-Tools: ${AMBER_ENABLE_SPIRV_TOOLS}")
message(STATUS "Amber enable Shaderc: ${AMBER_ENABLE_SHADERC}")
message(STATUS "Amber enable tests: ${AMBER_ENABLE_TESTS}")
message(STATUS "Amber enable samples: ${AMBER_ENABLE_SAMPLES}")
message(STATUS "Amber enable lodepng: ${AMBER_ENABLE_LODEPNG}")
message(STATUS "Amber enable SwiftShader: ${AMBER_ENABLE_SWIFTSHADER}")
message(STATUS "Amber enable DXC: ${AMBER_ENABLE_DXC}")
message(STATUS "Amber enable Clspv: ${AMBER_ENABLE_CLSPV}")
include_directories("${PROJECT_SOURCE_DIR}/include")
include_directories("${PROJECT_SOURCE_DIR}")
if (${AMBER_ENABLE_SPIRV_TOOLS})
include_directories("${PROJECT_SOURCE_DIR}/third_party/spirv-tools/include")
endif()
if (NOT ANDROID)
include(src/dawn/find_dawn.cmake)
endif()
include(src/vulkan/find_vulkan.cmake)
add_definitions(-DAMBER_CTS_VULKAN_HEADER=$<BOOL:${VULKAN_CTS_HEADER}>)
add_definitions(-DAMBER_ENGINE_VULKAN=$<BOOL:${Vulkan_FOUND}>)
add_definitions(-DAMBER_ENGINE_DAWN=$<BOOL:${Dawn_FOUND}>)
add_definitions(-DAMBER_ENABLE_SPIRV_TOOLS=$<BOOL:${AMBER_ENABLE_SPIRV_TOOLS}>)
add_definitions(-DAMBER_ENABLE_SHADERC=$<BOOL:${AMBER_ENABLE_SHADERC}>)
add_definitions(-DAMBER_ENABLE_DXC=$<BOOL:${AMBER_ENABLE_DXC}>)
add_definitions(-DAMBER_ENABLE_CLSPV=$<BOOL:${AMBER_ENABLE_CLSPV}>)
add_definitions(-DAMBER_ENABLE_LODEPNG=$<BOOL:${AMBER_ENABLE_LODEPNG}>)
set(CMAKE_DEBUG_POSTFIX "")
# This has to be done very early so the link path will get set correctly for all
# the various libraries and binaries.
if (${AMBER_ENABLE_DXC})
link_directories("${CMAKE_BINARY_DIR}/third_party/dxc/lib")
if (MSVC)
# DXC turns this off all over the place so we have to do the same.
add_definitions(/D_ITERATOR_DEBUG_LEVEL=0)
endif()
endif()
if ("${CMAKE_BUILD_TYPE}" STREQUAL "")
message(STATUS "No build type selected, default to Debug")
set(CMAKE_BUILD_TYPE "Debug")
endif()
if(("${CMAKE_CXX_COMPILER_ID}" STREQUAL "GNU") OR
(("${CMAKE_CXX_COMPILER_ID}" STREQUAL "Clang") AND
(NOT CMAKE_CXX_SIMULATE_ID STREQUAL "MSVC")))
set(COMPILER_IS_LIKE_GNU TRUE)
endif()
if(MSVC)
# We don't want to have to copy the C Runtime DLL everywhere the executable
# goes. So by default compile code to assume the CRT is statically linked,
# i.e. use /MT* options. For debug builds use /MTd, and for release builds
# use /MT. If AMBER_ENABLE_SHARED_CRT is ON, then use the shared C runtime.
# Modify the project-wide options variables. This is ugly, but seems to be
# the state of the art.
if(NOT ${AMBER_ENABLE_SHARED_CRT})
message(STATUS "Amber: Static C runtime selected: replacing /MD* with /MT*")
foreach (flag_var
CMAKE_C_FLAGS CMAKE_C_FLAGS_DEBUG CMAKE_C_FLAGS_RELEASE
CMAKE_C_FLAGS_MINSIZEREL CMAKE_C_FLAGS_RELWITHDEBINFO
CMAKE_CXX_FLAGS CMAKE_CXX_FLAGS_DEBUG CMAKE_CXX_FLAGS_RELEASE
CMAKE_CXX_FLAGS_MINSIZEREL CMAKE_CXX_FLAGS_RELWITHDEBINFO)
string(REPLACE "/MD" "/MT" ${flag_var} "${${flag_var}}")
endforeach()
endif()
endif()
function(amber_default_compile_options TARGET)
if (${COMPILER_IS_LIKE_GNU})
target_compile_options(${TARGET} PRIVATE
-std=c++11
-fno-exceptions
-fno-rtti
-fvisibility=hidden
-Wall
-Werror
-Wextra
-Wno-padded
-Wno-switch-enum
-Wno-unknown-pragmas
-pedantic-errors
)
if("${CMAKE_CXX_COMPILER_ID}" STREQUAL "Clang")
target_compile_options(${TARGET} PRIVATE
-Wno-c++98-compat
-Wno-c++98-compat-pedantic
-Wno-format-pedantic
-Wno-unknown-warning-option
-Weverything
)
endif()
endif()
if (MSVC)
# Specify /EHs for exception handling.
target_compile_options(${TARGET} PRIVATE
/bigobj
/EHsc
/W3
/WX
/wd4068
/wd4514
/wd4571
/wd4625
/wd4626
/wd4710
/wd4774
/wd4820
/wd5026
/wd5027
)
endif()
if (NOT ${AMBER_ENABLE_SHARED_CRT})
# For MinGW cross compile, statically link to the C++ runtime.
# But it still depends on MSVCRT.dll.
if (${CMAKE_SYSTEM_NAME} STREQUAL "Windows")
if (${CMAKE_CXX_COMPILER_ID} STREQUAL "GNU")
set_target_properties(${TARGET} PROPERTIES LINK_FLAGS
-static
-static-libgcc
-static-libstdc++)
endif()
endif()
endif()
endfunction()
add_subdirectory(third_party)
add_subdirectory(src)
if (${AMBER_ENABLE_SAMPLES} AND NOT ANDROID)
add_subdirectory(samples)
endif()