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cmake: Rework LTO support under emscripten

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Sebastian Krzyszkowiak 2020-05-10 18:06:58 +02:00
parent 6b6566d7e4
commit 92d9f1c1bf
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GPG key ID: E8F235CF3BDBC3FF
1 changed files with 15 additions and 6 deletions
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21
cmake/libsuperderpy.cmake
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@ -165,7 +165,11 @@ if (NOT LIBSUPERDERPY_CONFIG_INCLUDED)
endif()
endif()
option(LIBSUPERDERPY_LTO "Use link-time optimization" OFF)
if (EMSCRIPTEN)
option(LIBSUPERDERPY_LTO "Use link-time optimization" ON)
else()
option(LIBSUPERDERPY_LTO "Use link-time optimization" OFF)
endif()
if(POLICY CMP0069 AND LIBSUPERDERPY_LTO)
if(NOT USE_CLANG_TIDY AND NOT MINGW) # clang-tidy + GCC + LTO = errors; also, MinGW crashes
cmake_policy(SET CMP0069 NEW)
@ -173,10 +177,15 @@ if (NOT LIBSUPERDERPY_CONFIG_INCLUDED)
check_ipo_supported(RESULT IPO_SUPPORTED)
message(STATUS "Link time optimization: ${IPO_SUPPORTED}")
if(IPO_SUPPORTED)
set(CMAKE_SHARED_LINKER_FLAGS "${CMAKE_SHARED_LINKER_FLAGS} -flto")
set(CMAKE_EXE_LINKER_FLAGS "${CMAKE_EXE_LINKER_FLAGS} -flto")
set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -flto")
set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -flto")
if(NOT EMSCRIPTEN)
set(CMAKE_SHARED_LINKER_FLAGS "${CMAKE_SHARED_LINKER_FLAGS} -flto")
set(CMAKE_EXE_LINKER_FLAGS "${CMAKE_EXE_LINKER_FLAGS} -flto")
set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -flto")
set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -flto")
else()
set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} --llvm-lto 3")
set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} --llvm-lto 3")
endif()
endif()
endif()
endif()
@ -271,7 +280,7 @@ if (NOT LIBSUPERDERPY_CONFIG_INCLUDED)
set(CMAKE_MODULE_LINKER_FLAGS "${CMAKE_SHARED_LINKER_FLAGS} -s SIDE_MODULE=2 -s EXPORTED_FUNCTIONS=[\"_Gamestate_ProgressCount\"]")
set(CMAKE_SHARED_LINKER_FLAGS "${CMAKE_SHARED_LINKER_FLAGS} --ignore-dynamic-linking")
set(CMAKE_EXE_LINKER_FLAGS "${CMAKE_EXE_LINKER_FLAGS} --ignore-dynamic-linking")
set(EMSCRIPTEN_FLAGS -s TOTAL_MEMORY=${EMSCRIPTEN_TOTAL_MEMORY}MB --emit-symbol-map --llvm-lto 3 --use-preload-plugins --use-preload-cache -s FULL_ES2=1 -s EMTERPRETIFY=1 -s EMTERPRETIFY_FILE=\"${LIBSUPERDERPY_GAMENAME}.emterpret.js\" -s EMTERPRETIFY_ASYNC=1 -s EMTERPRETIFY_WHITELIST=[\"_libsuperderpy_emscripten_mainloop\",\"_libsuperderpy_mainloop\",\"_MainloopTick\",\"_GamestateLoadingThread\"] -s INCLUDE_FULL_LIBRARY=1 -s ERROR_ON_MISSING_LIBRARIES=1)
set(EMSCRIPTEN_FLAGS -s TOTAL_MEMORY=${EMSCRIPTEN_TOTAL_MEMORY}MB --emit-symbol-map --use-preload-plugins --use-preload-cache -s FULL_ES2=1 -s EMTERPRETIFY=1 -s EMTERPRETIFY_FILE=\"${LIBSUPERDERPY_GAMENAME}.emterpret.js\" -s EMTERPRETIFY_ASYNC=1 -s EMTERPRETIFY_WHITELIST=[\"_libsuperderpy_emscripten_mainloop\",\"_libsuperderpy_mainloop\",\"_MainloopTick\",\"_GamestateLoadingThread\"] -s INCLUDE_FULL_LIBRARY=1 -s ERROR_ON_MISSING_LIBRARIES=1)
set(LIBSUPERDERPY_EMSCRIPTEN_MODE "wasm" CACHE STRING "Emscripten compilation mode (JavaScript or WebAssembly)")
set_property(CACHE LIBSUPERDERPY_EMSCRIPTEN_MODE PROPERTY STRINGS "asm.js;wasm")