diff options
| -rw-r--r-- | mkspecs/wasm-emscripten/qmake.conf | 17 |
1 files changed, 17 insertions, 0 deletions
diff --git a/mkspecs/wasm-emscripten/qmake.conf b/mkspecs/wasm-emscripten/qmake.conf index 82c02c76e7..18562621ac 100644 --- a/mkspecs/wasm-emscripten/qmake.conf +++ b/mkspecs/wasm-emscripten/qmake.conf @@ -8,6 +8,23 @@ include(../common/clang.conf) load(device_config) load(emcc_ver) +# Support enabling asyncify by configuring with "-device-option EMSCRIPTEN_ASYNCIFY=1" +!isEmpty(EMSCRIPTEN_ASYNCIFY): { + !equals(EMSCRIPTEN_ASYNCIFY, 1):!equals(EMSCRIPTEN_ASYNCIFY, 0): \ + message(Error: The value for EMSCRIPTEN_ASYNCIFY must be 0 or 1) + equals(EMSCRIPTEN_ASYNCIFY, 1): { + QMAKE_CFLAGS += -DQT_HAVE_EMSCRIPTEN_ASYNCIFY + QMAKE_CXXFLAGS += -DQT_HAVE_EMSCRIPTEN_ASYNCIFY + QMAKE_LFLAGS += -s ASYNCIFY + + # Emscripten recommends building with optimizations when using asyncify + # in order to reduce wasm file size, and may also generate broken wasm + # (with "wasm validation error: too many locals" type errors) if optimizations + # are omitted. Enable optimizations also for debug builds. + QMAKE_LFLAGS_DEBUG += -Os + } +} + EMTERP_FLAGS = \ -s EMTERPRETIFY=1 \ -s EMTERPRETIFY_ASYNC=1 \ |