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# Copy in Qt HTML/JS launch files for apps.
function(_qt_internal_wasm_add_target_helpers target)
get_target_property(targetType "${target}" TYPE)
if("${targetType}" STREQUAL "EXECUTABLE")
set(APPNAME ${target})
if(QT6_INSTALL_PREFIX)
set(WASM_BUILD_DIR "${QT6_INSTALL_PREFIX}")
elseif(QT_BUILD_DIR)
set(WASM_BUILD_DIR "${QT_BUILD_DIR}")
endif()
configure_file("${WASM_BUILD_DIR}/plugins/platforms/wasm_shell.html"
"${target}.html")
configure_file("${WASM_BUILD_DIR}/plugins/platforms/qtloader.js"
qtloader.js COPYONLY)
configure_file("${WASM_BUILD_DIR}/plugins/platforms/qtlogo.svg"
qtlogo.svg COPYONLY)
if(QT_FEATURE_thread)
set(POOL_SIZE 4)
get_target_property(_tmp_poolSize "${target}" QT_WASM_PTHREAD_POOL_SIZE)
if(_tmp_poolSize)
set(POOL_SIZE ${_tmp_poolSize})
elseif(DEFINED QT_WASM_PTHREAD_POOL_SIZE)
set(POOL_SIZE ${QT_WASM_PTHREAD_POOL_SIZE})
endif()
target_link_options("${target}" PRIVATE "SHELL:-s PTHREAD_POOL_SIZE=${POOL_SIZE}")
message(DEBUG "Setting PTHREAD_POOL_SIZE to ${POOL_SIZE} for ${target}")
endif()
# Hardcode wasm memory size.
get_target_property(_tmp_initialMemory "${target}" QT_WASM_INITIAL_MEMORY)
if(_tmp_initialMemory)
set(QT_WASM_INITIAL_MEMORY "${_tmp_initialMemory}")
elseif(NOT DEFINED QT_WASM_INITIAL_MEMORY)
if(QT_FEATURE_thread)
# Pthreads and ALLOW_MEMORY_GROWTH can cause javascript wasm memory access to
# be slow and having to update HEAP* views. Instead, we specify the memory size
# at build time. Further, browsers limit the maximum initial memory size to 1GB.
# https://github.com/WebAssembly/design/issues/1271
set(QT_WASM_INITIAL_MEMORY "1GB")
else()
# emscripten default is 16MB, we need slightly more sometimes
set(QT_WASM_INITIAL_MEMORY "50MB")
endif()
endif()
if(DEFINED QT_WASM_INITIAL_MEMORY)
# QT_WASM_INITIAL_MEMORY must be a multiple of 65536
target_link_options("${target}"
PRIVATE "SHELL:-s INITIAL_MEMORY=${QT_WASM_INITIAL_MEMORY}")
message(DEBUG "-- Setting INITIAL_MEMORY to ${QT_WASM_INITIAL_MEMORY} for ${target}")
endif()
endif()
endfunction()
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