ref: 140c67a5cb2632cff3db59e7a217323cb10b5ff6
parent: 169a755ec3cd9c833de3731edc0a03a8e2f18b77
author: Clownacy <Clownacy@users.noreply.github.com>
date: Sat Mar 14 15:09:32 EDT 2020
Make CMake file match the portable branch one
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -6,16 +6,49 @@
option(FIX_BUGS "Fix various bugs in the game" ON)
option(DEBUG_SAVE "Re-enable the ability to drag-and-drop save files onto the window" OFF)
+option(LTO "Enable link-time optimisation" OFF)
+option(NATIVE_OPTIMIZATIONS "Enable processor-specific optimisations (executable might not work on other architectures) (GCC-compatible compilers only)" OFF)
+
+option(WARNINGS "Enable common compiler warnings (for GCC-compatible compilers and MSVC only)" OFF)
+option(WARNINGS_ALL "Enable ALL compiler warnings (for Clang and MSVC only)" OFF)
+option(WARNINGS_FATAL "Stop compilation on any compiler warning (for GCC-compatible compilers and MSVC only)" OFF)
+
project(CSE2 LANGUAGES C CXX)
-#if(MSVC)
+message(STATUS "Compiler ID : ${CMAKE_CXX_COMPILER_ID}")+
+# Has to be placed after "project()"
+if(CMAKE_CXX_COMPILER_ID MATCHES "Clang")
+ # Using Clang (this is a match so that we also get "AppleClang" which is the Apple-provided Clang
+ set(COMPILER_IS_CLANG true)
+ message(STATUS "Compiling with Clang")
+endif()
+
+if(CMAKE_CXX_COMPILER_ID STREQUAL "GNU")
+ # Using GCC
+ set(COMPILER_IS_GCC true)
+ message(STATUS "Compiling with GCC")
+endif()
+
+if(CMAKE_CXX_COMPILER_ID STREQUAL "Intel")
+ # Using Intel C++
+ set(COMPILER_IS_ICC true)
+ message(STATUS "Compiling with ICC")
+endif()
+
+if(COMPILER_IS_CLANG OR COMPILER_IS_GCC OR COMPILER_IS_ICC)
+ set(COMPILER_IS_GCC_COMPATIBLE true)
+ message(STATUS "Compiling with a GCC-compatible compiler")
+endif()
+
+if(MSVC)
# Statically-link the CRT (vcpkg static libs do this)
-# foreach(flag_var CMAKE_C_FLAGS CMAKE_C_FLAGS_DEBUG CMAKE_C_FLAGS_RELEASE CMAKE_C_FLAGS_MINSIZEREL CMAKE_C_FLAGS_RELWITHDEBINFO CMAKE_CXX_FLAGS CMAKE_CXX_FLAGS_DEBUG CMAKE_CXX_FLAGS_RELEASE CMAKE_CXX_FLAGS_MINSIZEREL CMAKE_CXX_FLAGS_RELWITHDEBINFO)
-# if(${flag_var} MATCHES "/MD")-# string(REGEX REPLACE "/MD" "/MT" ${flag_var} "${${flag_var}}")-# endif()
-# endforeach()
-#endif()
+ foreach(flag_var CMAKE_C_FLAGS CMAKE_C_FLAGS_DEBUG CMAKE_C_FLAGS_RELEASE CMAKE_C_FLAGS_MINSIZEREL CMAKE_C_FLAGS_RELWITHDEBINFO CMAKE_CXX_FLAGS CMAKE_CXX_FLAGS_DEBUG CMAKE_CXX_FLAGS_RELEASE CMAKE_CXX_FLAGS_MINSIZEREL CMAKE_CXX_FLAGS_RELWITHDEBINFO)
+ if(${flag_var} MATCHES "/MD")+ string(REGEX REPLACE "/MD" "/MT" ${flag_var} "${${flag_var}}")+ endif()
+ endforeach()
+endif()
##
# CSE2
@@ -163,6 +196,60 @@
target_compile_definitions(CSE2 PRIVATE DEBUG_SAVE)
endif()
+if(WARNINGS)
+ # HACK : Replace this with CMake provided stuff when possible (when CMake makes avoiding this possible (it isn't currently))
+
+ if(MSVC)
+ # Force to always compile with /W4 on MSVC
+
+ # Can't do this with target_compile_options
+ # if(CMAKE_CXX_FLAGS MATCHES "/W[0-4]")
+ # string(REGEX REPLACE "/W[0-4]" "/W4" CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS}")+ # else()
+ # target_compile_options(CSE2 PRIVATE /W4)
+ # endif()
+
+ target_compile_options(CSE2 PRIVATE /W4)
+ elseif(COMPILER_IS_GCC_COMPATIBLE)
+ target_compile_options(CSE2 PRIVATE -Wall -Wextra -pedantic)
+ else()
+ message(WARNING "Could not activate warnings ! (Unsupported compiler)")
+ endif()
+endif()
+
+if (WARNINGS_ALL)
+ # HACK : Replace this with CMake provided stuff when possible (when CMake makes avoiding this possible (it isn't currently))
+
+ if (MSVC)
+ # Force to always compile with /Wall on MSVC
+
+ # Can't do this with target_compile_options
+ # if(CMAKE_CXX_FLAGS MATCHES "/W[0-4]")
+ # string(REGEX REPLACE "/W[0-4]" "/Wall" CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS}")+ # else()
+ # target_compile_options(CSE2 PRIVATE /Wall)
+ # endif()
+
+ target_compile_options(CSE2 PRIVATE /Wall)
+ elseif(COMPILER_IS_CLANG)
+ target_compile_options(CSE2 PRIVATE -Weverything)
+ else()
+ message(WARNING "Could not activate all warnings ! (Unsupported compiler)")
+ endif()
+endif()
+
+if(WARNINGS_FATAL)
+ # HACK : Replace this with CMake provided stuff when possible (when CMake makes avoiding this possible (it isn't currently))
+
+ if(MSVC)
+ target_compile_options(CSE2 PRIVATE /WX)
+ elseif(COMPILER_IS_GCC_COMPATIBLE)
+ target_compile_options(CSE2 PRIVATE -Werror)
+ else()
+ message(WARNING "Could not activate fatal warnings ! (Unsupported compiler)")
+ endif()
+endif()
+
# Make some tweaks if we're targetting Windows
#if(WIN32)
target_sources(CSE2 PRIVATE "${ASSETS_DIRECTORY}/resources/CSE2.rc")@@ -171,11 +258,10 @@
# Make some tweaks if we're using MSVC
if(MSVC)
- target_compile_definitions(CSE2 PRIVATE _CRT_SECURE_NO_WARNINGS) # Disable warnings that normally fire up on MSVC when using "unsafe" functions instead of using MSVC's "safe" _s functions
-endif()
+ # Disable warnings that normally fire up on MSVC when using "unsafe" functions instead of using MSVC's "safe" _s functions
+ target_compile_definitions(CSE2 PRIVATE _CRT_SECURE_NO_WARNINGS)
-# Make it so source files are recognized as UTF-8 by MSVC
-if(MSVC)
+ # Make it so source files are recognized as UTF-8 by MSVC
target_compile_options(CSE2 PRIVATE "/utf-8")
endif()
@@ -204,6 +290,36 @@
RUNTIME_OUTPUT_DIRECTORY_RELWITHDEBINFO ${BUILD_DIRECTORY} RUNTIME_OUTPUT_DIRECTORY_DEBUG ${BUILD_DIRECTORY})
+
+# Enable link-time optimisation if available
+if(LTO)
+ if((${CMAKE_VERSION} VERSION_EQUAL 3.9) OR (${CMAKE_VERSION} VERSION_GREATER 3.9))+ include(CheckIPOSupported)
+ check_ipo_supported(RESULT result)
+ if(result)
+ set_target_properties(CSE2 PROPERTIES INTERPROCEDURAL_OPTIMIZATION TRUE)
+ endif()
+ endif()
+endif()
+
+# Enable -march=native if available
+if(NATIVE_OPTIMIZATIONS)
+ include(CheckCXXCompilerFlag)
+ CHECK_CXX_COMPILER_FLAG("-march=native" COMPILER_SUPPORTS_MARCH_NATIVE) # GCC flag+ if(COMPILER_SUPPORTS_MARCH_NATIVE)
+ target_compile_options(CSE2 PRIVATE -march=native)
+ else()
+ CHECK_CXX_COMPILER_FLAG("-xHost" COMPILER_SUPPORTS_XHOST) # ICC (Linux) flag+ CHECK_CXX_COMPILER_FLAG("/QxHost" COMPILER_SUPPORTS_QXHOST) # ICC (Windows) flag+ if(COMPILER_SUPPORTS_XHOST)
+ target_compile_options(CSE2 PRIVATE -xHost)
+ elseif(COMPILER_SUPPORTS_QXHOST)
+ target_compile_options(CSE2 PRIVATE /QxHost)
+ else()
+ message(WARNING "Couldn't activate native optimizations ! (Unsupported compiler)")
+ endif()
+ endif()
+endif()
# Link libraries
target_link_libraries(CSE2 PRIVATE ddraw.lib dsound.lib Version.lib ShLwApi.Lib Imm32.lib WinMM.lib dxguid.lib)