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# Copyright (C) 2022 The Qt Company Ltd.
# SPDX-License-Identifier: BSD-3-Clause
# WARNING must keep in sync with wasm-emscripten/qmake.conf!
function (qt_internal_setup_wasm_target_properties wasmTarget)
target_link_options("${wasmTarget}" INTERFACE
"SHELL:-s MAX_WEBGL_VERSION=2"
"SHELL:-s WASM_BIGINT=1"
"SHELL:-s STACK_SIZE=5MB")
set(executable_link_flags "-sFETCH")
## wasm64
if (WASM64)
target_compile_options("${wasmTarget}" INTERFACE "SHELL:-s MEMORY64=1" )
target_link_options("${wasmTarget}" INTERFACE "SHELL:-s MEMORY64=1" -mwasm64)
endif()
#simd
if (QT_FEATURE_wasm_simd128)
target_compile_options("${wasmTarget}" INTERFACE -msimd128)
endif()
if (QT_FEATURE_sse2)
target_compile_options("${wasmTarget}" INTERFACE -O2 -msimd128 -msse -msse2)
endif()
# exceptions
if (QT_FEATURE_wasm_exceptions)
target_compile_options("${wasmTarget}" INTERFACE -fwasm-exceptions)
target_link_options("${wasmTarget}" INTERFACE -fwasm-exceptions)
elseif(QT_FEATURE_exceptions)
# add link option only, compile option is added in cross-platform code
target_link_options("${wasmTarget}" INTERFACE -fexceptions)
endif()
# setjmp/longjmp type. The type is "emscripten" by default, but must
# be set to "wasm" when wasm-exceptions are used, for compatibility reasons.
if (QT_FEATURE_wasm_exceptions)
target_compile_options("${wasmTarget}" INTERFACE -s SUPPORT_LONGJMP=wasm)
target_link_options("${wasmTarget}" INTERFACE -s SUPPORT_LONGJMP=wasm)
endif()
if (QT_FEATURE_thread)
target_compile_options("${wasmTarget}" INTERFACE "SHELL:-pthread")
target_link_options("${wasmTarget}" INTERFACE "SHELL:-pthread")
endif()
target_link_options("${wasmTarget}" INTERFACE "SHELL:-s ALLOW_MEMORY_GROWTH")
# debug add_compile_options
if ("QT_WASM_SOURCE_MAP=1" IN_LIST QT_QMAKE_DEVICE_OPTIONS)
set(WASM_SOURCE_MAP_BASE "http://localhost:8000/")
if(DEFINED QT_WASM_SOURCE_MAP_BASE)
set(WASM_SOURCE_MAP_BASE "${QT_WASM_SOURCE_MAP_BASE}")
endif()
# Pass --source-map-base on the linker line. This informs the
# browser where to find the source files when debugging.
# -g4 to make source maps for debugging
target_link_options("${wasmTarget}" INTERFACE "-gsource-map" "--source-map-base" "${WASM_SOURCE_MAP_BASE}")
endif()
# a few good defaults to make console more verbose while debugging
target_link_options("${wasmTarget}" INTERFACE $<$<CONFIG:Debug>:
--profiling-funcs>)
# target_link_options("${wasmTarget}" INTERFACE "SHELL:-s LIBRARY_DEBUG=1") # print out library calls, verbose
# target_link_options("${wasmTarget}" INTERFACE "SHELL:-s SYSCALL_DEBUG=1") # print out sys calls, verbose
# target_link_options("${wasmTarget}" INTERFACE "SHELL:-s FS_LOG=1") # print out filesystem ops, verbose
# target_link_options("${wasmTarget}" INTERFACE "SHELL:-s SOCKET_DEBUG") # print out socket,network data transfer
if ("QT_EMSCRIPTEN_ASYNCIFY=1" IN_LIST QT_QMAKE_DEVICE_OPTIONS)
# 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.
set(QT_CFLAGS_OPTIMIZE_DEBUG "-Os" CACHE STRING INTERNAL FORCE)
set(QT_FEATURE_optimize_debug ON CACHE BOOL INTERNAL FORCE)
target_link_options("${wasmTarget}" INTERFACE "SHELL:-s ASYNCIFY" "-Os")
target_compile_definitions("${wasmTarget}" INTERFACE QT_HAVE_EMSCRIPTEN_ASYNCIFY)
elseif ("QT_EMSCRIPTEN_ASYNCIFY=2" IN_LIST QT_QMAKE_DEVICE_OPTIONS OR QT_FEATURE_wasm_jspi)
# Enable JSPI (also known as asyncify 2). Unlike asyncify 1 this
# is supported natively by the browsers, and does not require
# enabling optimizations.
target_link_options("${wasmTarget}" INTERFACE "SHELL:-s JSPI")
target_compile_definitions("${wasmTarget}" INTERFACE QT_HAVE_EMSCRIPTEN_ASYNCIFY)
endif()
_qt_internal_handle_target_supports_shared_libs()
if(QT_FEATURE_shared)
set(side_modules
MODULE_LIBRARY SHARED_LIBRARY)
set(enable_side_module_if_needed
"$<$<IN_LIST:$<TARGET_PROPERTY:TYPE>,${side_modules}>:SHELL:-s SIDE_MODULE=1>")
set(enable_main_module_if_needed
"$<$<IN_LIST:$<TARGET_PROPERTY:TYPE>,EXECUTABLE>:SHELL:-sMAIN_MODULE=1 ${executable_link_flags}>")
set(set_shared_module_type_if_needed
"${enable_side_module_if_needed}"
"${enable_main_module_if_needed}"
)
# Add Qt libdir to linker library paths
set(qt_lib_location
"${QT_BUILD_INTERNALS_RELOCATABLE_INSTALL_PREFIX}/${INSTALL_LIBDIR}")
target_link_options("${wasmTarget}" INTERFACE
"$<$<STREQUAL:$<TARGET_PROPERTY:TYPE>,EXECUTABLE>:SHELL:" -L${qt_lib_location}/>)
target_compile_options("${wasmTarget}" INTERFACE "${set_shared_module_type_if_needed}")
target_link_options("${wasmTarget}" INTERFACE "${set_shared_module_type_if_needed}")
else()
target_link_options("${wasmTarget}" INTERFACE "SHELL:-sERROR_ON_UNDEFINED_SYMBOLS=1 ${executable_link_flags}")
endif()
# Suppress warnings for known issues for developer builds
if(FEATURE_developer_build)
target_link_options("${wasmTarget}" INTERFACE "SHELL:-Wno-pthreads-mem-growth")
endif()
endfunction()
function(qt_internal_wasm_add_finalizers target)
qt_add_list_file_finalizer(_qt_internal_finalize_wasm_app ${target})
endfunction()
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