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cmake_minimum_required(VERSION 3.24)
project(daw
VERSION 0.0.1
DESCRIPTION "A Simple Hobby Game Engine"
LANGUAGES C)
# We really don't want any in-source builds
set(CMAKE_DISABLE_IN_SOURCE_BUILD ON CACHE BOOL "Prevents cmake -S. -B.")
set(CMAKE_DISABLE_SOURCE_CHANGES ON CACHE BOOL "Prevent writing files to CMAKE_SOURCE_DIR under configure")
# Check whether daw is build/used as a sub project/module or not
if(CMAKE_PROJECT_NAME STREQUAL PROJECT_NAME)
set(MAINPROJECT ON)
else()
set(MAINPROJECT OFF)
endif()
include(CMakeDependentOption)
include(FetchContent)
option(ASAN "Enable address sanitizer. Only enabled when DAW_BUILD_DEBUG=ON")
option(UBSAN "Enable undefined behaviour sanitizer. Only enabled when DAW_BUILD_DEBUG=ON")
cmake_dependent_option(DAW_BUILD_DEBUG
"Compile daw engine with debugging features" ON
"CMAKE_BUILD_TYPE STREQUAL Debug" OFF)
cmake_dependent_option(DAW_BUILD_HOTRELOAD
"Compile daw engine with hot reloading enabled" ON
"NOT MAINPROJECT;CMAKE_BUILD_TYPE STREQUAL Debug;NOT WIN32" OFF)
cmake_dependent_option(DAW_BUILD_ASAN
"Compile daw engine with address sanitizer (asan)" ON
"DAW_BUILD_DEBUG;ASAN" OFF)
cmake_dependent_option(DAW_BUILD_UBSAN
"Compile daw engine with undefined behaviour sanitizer (ubsan)" ON
"DAW_BUILD_DEBUG;UBSAN" OFF)
# Unused
cmake_dependent_option(DAW_BUILD_TOOLS
"Build tools to manipulate a daw project" ON
"MAINPROJECT" OFF)
if("${CMAKE_BUILD_TYPE}" STREQUAL "Release")
message("Enabling LTO")
set(CMAKE_INTERPROCEDURAL_OPTIMIZATION TRUE)
set(CMAKE_POSITION_INDEPENDENT_CODE TRUE)
endif()
if(DAW_BUILD_DEBUG AND MAINPROJECT)
set(CMAKE_EXPORT_COMPILE_COMMANDS ON)
endif()
if(DAW_BUILD_HOTRELOAD)
set(BUILD_SHARED_LIBS ON)
endif()
if(DAW_BUILD_UBSAN AND DAW_BUILD_ASAN)
message(FATAL_ERROR "You cannot build both asan and ubsan")
endif()
if(DAW_BUILD_DEBUG)
set(BUILD_OPTS -Og -ggdb3 -fno-omit-frame-pointer)
else()
set(BUILD_OPTS -O2 -flto=auto -fuse-linker-plugin -ffat-lto-objects
-funroll-loops -ffast-math -fno-signed-zeros -fno-trapping-math
-ffunction-sections -fdata-sections)
endif()
## Add some information before project configuration
# Git Sha1
execute_process(COMMAND
${GIT_EXECUTABLE} describe --match=NeVeRmAtCh --always --abbrev=6 --dirty
WORKING_DIRECTORY ${CMAKE_CURRENT_LIST_DIR}
OUTPUT_VARIABLE GIT_SHA
OUTPUT_STRIP_TRAILING_WHITESPACE
)
## Versioning
string(TIMESTAMP COMPILATION_DATE "%F")
set(ENGINE_VERSION_MAJOR ${PROJECT_VERSION_MAJOR})
set(ENGINE_VERSION_MINOR ${PROJECT_VERSION_MINOR})
set(ENGINE_VERSION_PATCH ${PROJECT_VERSION_PATCH})
set(ENGINE_VERSION_TWEAK ${GIT_SHA})
set(ENGINE_VERSION "${PROJECT_VERSION_MAJOR}.${PROJECT_VERSION_MINOR}.${PROJECT_VERSION_PATCH}-${GIT_SHA}")
if("${CMAKE_BUILD_TYPE}" STREQUAL "")
set(ENGINE_BUILD_TYPE "default")
else()
string(TOLOWER "${CMAKE_BUILD_TYPE}" ENGINE_BUILD_TYPE)
endif()
## Packages
set(GLFW_USE_WAYLAND ON)
find_package(glfw3 3.3 REQUIRED)
find_package(OpenGL REQUIRED)
FetchContent_Declare(cglm
GIT_REPOSITORY https://github.com/recp/cglm.git
GIT_TAG v0.9.6
)
FetchContent_Declare(stb
GIT_REPOSITORY https://github.com/nothings/stb.git
GIT_TAG master
)
FetchContent_MakeAvailable(cglm stb)
## Glad
# TODO: make sure the glad command is run before building
set(GLAD_HEADER ${CMAKE_BINARY_DIR}/include/glad/gl.h)
## Compilation information
add_compile_options(${RELEASE_OPTS})
add_link_options(${RELEASE_OPTS})
# The main engine compilation target is defined here
add_subdirectory(src)
# Configuration files
configure_file(${CMAKE_CURRENT_LIST_DIR}/tools/cmake/configure.h.in
${CMAKE_BINARY_DIR}/include/engine/configure.h)
configure_file(${CMAKE_CURRENT_LIST_DIR}/tools/cmake/list_of_states.h.in
${CMAKE_BINARY_DIR}/include/states/list_of_states.h)
configure_file(${CMAKE_CURRENT_LIST_DIR}/tools/cmake/all_states.h.in
${CMAKE_BINARY_DIR}/include/states/all_states.h)
list(APPEND CMAKE_MODULE_PATH "${CMAKE_CURRENT_LIST_DIR}/tools/cmake")
if (NOT MAINPROJECT)
set(CMAKE_MODULE_PATH "${CMAKE_MODULE_PATH}" PARENT_SCOPE)
endif()
include(DawAddState)
message("Configured ${PROJECT_NAME} ${PROJECT_VERSION}")
message("version: ${ENGINE_VERSION} (${ENGINE_BUILD_TYPE} build)")
message("enable debug: ${DAW_BUILD_DEBUG}")
message("enable hotreload: ${DAW_BUILD_HOTRELOAD}")
message("enable asan: ${DAW_BUILD_ASAN}")
message("enable ubsan: ${DAW_BUILD_UBSAN}")
message("build tools: ${DAW_BUILD_TOOLS}")
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