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| author | Alex Beregszaszi <alex@rtfs.hu> | 2017-07-19 04:57:47 +0800 |
|---|---|---|
| committer | Alex Beregszaszi <alex@rtfs.hu> | 2017-07-19 04:59:32 +0800 |
| commit | 5050164d9e55a8f7ab437bd0983eb0a2e25ca6b1 (patch) | |
| tree | 33ba87e5ec8c9cf3bbd5bd0b20d8c9fb7c655318 /cmake | |
| parent | 01fbc636239f78134b37f9dedeacf40455ee2e0c (diff) | |
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Add comments to Emscripten flags
Diffstat (limited to 'cmake')
| -rw-r--r-- | cmake/EthCompilerSettings.cmake | 24 |
1 files changed, 20 insertions, 4 deletions
diff --git a/cmake/EthCompilerSettings.cmake b/cmake/EthCompilerSettings.cmake index ea3b185a..43317ae1 100644 --- a/cmake/EthCompilerSettings.cmake +++ b/cmake/EthCompilerSettings.cmake @@ -160,10 +160,26 @@ if (("${CMAKE_CXX_COMPILER_ID}" MATCHES "GNU") OR ("${CMAKE_CXX_COMPILER_ID}" MA endif() if (EMSCRIPTEN) - set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} --memory-init-file 0 -O3 -s LINKABLE=1 -s DISABLE_EXCEPTION_CATCHING=0 -s NO_EXIT_RUNTIME=1 -s ALLOW_MEMORY_GROWTH=1 -s NO_DYNAMIC_EXECUTION=1") - set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -fdata-sections -ffunction-sections -Wl,--gc-sections") - set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -fvisibility=hidden") - set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -s NO_FILESYSTEM=1 -s AGGRESSIVE_VARIABLE_ELIMINATION=1") + # Do emit a separate memory initialiser file + set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} --memory-init-file 0") + # Leave only exported symbols as public and agressively remove others + set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -fdata-sections -ffunction-sections -Wl,--gc-sections -fvisibility=hidden") + # Optimisation level + set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -O3") + # Keep every public symbols (disables dead code elimination) + set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -s LINKABLE=1") + # Re-enable exception catching (optimisations above -O1 disable it) + set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -s DISABLE_EXCEPTION_CATCHING=0") + # Remove any code related to exit (such as atexit) + set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -s NO_EXIT_RUNTIME=1") + # Remove any code related to filesystem access + set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -s NO_FILESYSTEM=1") + # Remove variables even if it needs to be duplicated (can improve speed at the cost of size) + set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -s AGGRESSIVE_VARIABLE_ELIMINATION=1") + # Allow memory growth, but disable some optimisations + set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -s ALLOW_MEMORY_GROWTH=1") + # Disable eval() + set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -s NO_DYNAMIC_EXECUTION=1") add_definitions(-DETH_EMSCRIPTEN=1) endif() endif() |