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wasm: set correct exceptions flag

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Emscripten supports two exception types:
   -fexceptions:       Emscripten JS-based exceptions
   -fwasm-exceptions:  WebAssembly (native) exceptions

These are mutually incompatible and a program should only use
one type. Set exceptions flag based on configure option to
make this happen.

Task-number: QTBUG-129747
Change-Id: I7e80a676aebcfea81f07431df7d50c234b0e3d4d
Reviewed-by: Lorn Potter <lorn.potter@qt.io>
This commit is contained in:
Morten Sørvig 2024-10-08 12:40:34 +02:00
parent 75133e0222
commit 48859317a6
1 changed files with 7 additions and 0 deletions
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7
cmake/QtInternalTargets.cmake
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@ -389,6 +389,13 @@ function(qt_internal_add_exceptions_flags)
# this hack since some unknown MSVC version.
set(enable_flag "${enable_flag}" "/d2FH4")
endif()
elseif(WASM)
# Use native WebAssembly exceptions if enabled
if(QT_FEATURE_wasm_exceptions)
set(enable_flag "-fwasm-exceptions")
else()
set(enable_flag "-fexceptions")
endif()
else()
set(enable_flag "-fexceptions")
endif()