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| author | Morten Johan Sørvig <morten.sorvig@qt.io> | 2020-02-13 11:16:36 +0100 |
|---|---|---|
| committer | Morten Johan Sørvig <morten.sorvig@qt.io> | 2020-04-03 13:32:56 +0200 |
| commit | 8a9ba8b2ce7c32b7e08560f56e4243f856dad1fe (patch) | |
| tree | ffd9382f60162e651fd484c827254f576605cff5 /mkspecs/wasm-emscripten | |
| parent | f7722394f457169c90511d73d0ec40588b37850d (diff) | |
wasm: add support for enabling Asyncify
./configure […] --device-option EMSCRIPTEN_ASYNCIFY=1
Set QT_HAVE_EMSCRIPTEN_ASYNCIFY as a feature flag,
enable optimizations for asyncified debug builds.
Change-Id: I81c887a411780e328aed48ec09ff6b9277c3bccf
Reviewed-by: Lorn Potter <lorn.potter@gmail.com>
Diffstat (limited to 'mkspecs/wasm-emscripten')
| -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 \ |