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Diffstat (limited to 'cmake/QtWasmHelpers.cmake')
| -rw-r--r-- | cmake/QtWasmHelpers.cmake | 127 |
1 files changed, 127 insertions, 0 deletions
diff --git a/cmake/QtWasmHelpers.cmake b/cmake/QtWasmHelpers.cmake new file mode 100644 index 0000000000..41ef5cb0ba --- /dev/null +++ b/cmake/QtWasmHelpers.cmake @@ -0,0 +1,127 @@ +# 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("${wasmTarget}" INTERFACE + "SHELL:-s MAX_WEBGL_VERSION=2" + "SHELL:-s FETCH=1" + "SHELL:-s WASM_BIGINT=1" + "SHELL:-s STACK_SIZE=5MB") + + target_link_libraries("${wasmTarget}" INTERFACE embind) + + ## wasm64 + if (WASM64) + target_compile_options("${wasmTarget}" INTERFACE "SHELL:-s MEMORY64=1" ) + target_link_options("${wasmTarget}" INTERFACE "SHELL:-s MEMORY64=1" -mwasm64) + endif() + # Enable MODULARIZE so that we are able to set EXPORT_NAME later and instantiate on demand (with + # MODULARIZE=0, emscripten creates a global app instance object at Javascript eval time) + target_link_options("${wasmTarget}" INTERFACE "SHELL:-s MODULARIZE=1") + + #simd + if (QT_FEATURE_wasm_simd128) + target_compile_options("${wasmTarget}" INTERFACE -msimd128) + endif() + if (QT_FEATURE_sse2) + target_compile_options("${wasmTarget}" INTERFACE -O2 -msimd128 -msse -msse2) + endif() + + # wasm exceptions + if (QT_FEATURE_wasm_exceptions) + target_compile_options("${wasmTarget}" INTERFACE -fwasm-exceptions) + target_link_options("${wasmTarget}" INTERFACE -fwasm-exceptions) + endif() + + if (QT_FEATURE_thread) + target_compile_options("${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>: + "SHELL:-s DEMANGLE_SUPPORT=1" + --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) + endif() + + # Set ASYNCIFY_IMPORTS unconditionally in order to support enabling asyncify at link time. + target_link_options("${wasmTarget}" INTERFACE "SHELL:-sASYNCIFY_IMPORTS=qt_asyncify_suspend_js,qt_asyncify_resume_js") + + if(QT_FEATURE_shared) + + set_property(GLOBAL PROPERTY TARGET_SUPPORTS_SHARED_LIBS TRUE) + + set(side_modules + MODULE_LIBRARY SHARED_LIBRARY) + set(enable_side_module_if_needed + "$<$<IN_LIST:$<TARGET_PROPERTY:TYPE>,${side_modules}>:SHELL:-s SIDE_MODULE=1>") + set(enable_main_module_if_needed + "$<$<IN_LIST:$<TARGET_PROPERTY:TYPE>,EXECUTABLE>:SHELL:-s MAIN_MODULE=1>") + 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:-s ERROR_ON_UNDEFINED_SYMBOLS=1") + 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_set_wasm_export_name ${target}) + qt_add_list_file_finalizer(_qt_internal_add_wasm_extra_exported_methods ${target}) + qt_add_list_file_finalizer(_qt_internal_wasm_add_target_helpers ${target}) +endfunction() + + |