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| author | Lorn Potter <lorn.potter@gmail.com> | 2020-09-03 18:29:41 +1000 |
|---|---|---|
| committer | Lorn Potter <lorn.potter@gmail.com> | 2021-04-01 19:23:42 +1000 |
| commit | 4972fdb350fe79e18b0413e74028cd9b9803f96b (patch) | |
| tree | 1db1aed90773da8b543576819ea8a156e3748bb2 /cmake/QtAutoDetect.cmake | |
| parent | 5bf4133c1752c8d38afaac0064a0726d6036e52c (diff) | |
wasm: add cmake build support
A few configure defines get changed:
QMAKE_WASM_PTHREAD_POOL_SIZE is now QT_WASM_PTHREAD_POOL_SIZE
QMAKE_WASM_TOTAL_MEMORY is now QT_WASM_INITIAL_MEMORY
QMAKE_WASM_SOURCE_MAP_BASE is now QT_WASM_SOURCE_MAP_BASE
device-option EMSCRIPTEN_ASYNCIFY=1 is QT_EMSCRIPTEN_ASYNCIFY=1
To create source maps for debugging. use
device-option QT_WASM_SOURCE_MAP=1
Task-number: QTBUG-78647
Change-Id: If9f30cd7fb408c386d6d69b5f7b1beecf1ab44b5
Reviewed-by: Alexandru Croitor <alexandru.croitor@qt.io>
Diffstat (limited to 'cmake/QtAutoDetect.cmake')
| -rw-r--r-- | cmake/QtAutoDetect.cmake | 59 |
1 files changed, 59 insertions, 0 deletions
diff --git a/cmake/QtAutoDetect.cmake b/cmake/QtAutoDetect.cmake index d3173dfad0..b32258e929 100644 --- a/cmake/QtAutoDetect.cmake +++ b/cmake/QtAutoDetect.cmake @@ -5,6 +5,64 @@ # Make sure to not run detection when building standalone tests, because the detection was already # done when initially configuring qtbase. + +function(qt_auto_detect_wasm) + if("${QT_QMAKE_TARGET_MKSPEC}" STREQUAL "wasm-emscripten" AND DEFINED ENV{EMSDK}) + if(NOT DEFINED QT_AUTODETECT_WASM) + set(QT_AUTODETECT_WASM TRUE CACHE BOOL "") + # detect EMSCRIPTEN_ROOT path + file(READ "$ENV{EMSDK}/.emscripten" ver) + string(REGEX MATCH "EMSCRIPTEN_ROOT.*$" EMROOT "${ver}") + string(REGEX MATCH "'([^' ]*)'" EMROOT2 "${EMROOT}") + string(REPLACE "'" "" EMROOT_PATH "${EMROOT2}") + + # get emscripten version + if(CMAKE_HOST_SYSTEM_NAME STREQUAL "Windows") + set (EXECUTE_COMMANDPATH "$ENV{EMSDK}/${EMROOT_PATH}/emcc.bat") + else() + set (EXECUTE_COMMANDPATH "$ENV{EMSDK}/${EMROOT_PATH}/emcc") + endif() + + file(TO_NATIVE_PATH "${EXECUTE_COMMANDPATH}" EXECUTE_COMMAND) + execute_process(COMMAND ${EXECUTE_COMMAND} --version + OUTPUT_VARIABLE emOutput + OUTPUT_STRIP_TRAILING_WHITESPACE + ERROR_VARIABLE emrun_error + RESULT_VARIABLE result) + if(NOT emOutput) + message(FATAL_ERROR + "Can't determine Emscripten version! Error: ${emrun_error}") + endif() + string(REGEX MATCH "[0-9]+\\.[0-9]+\\.[0-9]+" CMAKE_EMSDK_REGEX_VERSION "${emOutput}") + set(EMCC_VERSION "${CMAKE_EMSDK_REGEX_VERSION}" CACHE STRING INTERNAL FORCE) + + # find toolchain file + if(NOT DEFINED CMAKE_TOOLCHAIN_FILE) + set(wasm_toolchain_file "$ENV{EMSDK}/${EMROOT_PATH}/cmake/Modules/Platform/Emscripten.cmake") + set(CMAKE_TOOLCHAIN_FILE "${wasm_toolchain_file}" CACHE STRING "" FORCE) + endif() + + if(EXISTS "${CMAKE_TOOLCHAIN_FILE}") + message(STATUS "Emscripten ${CMAKE_EMSDK_REGEX_VERSION} toolchain file detected at ${CMAKE_TOOLCHAIN_FILE}") + else() + message(FATAL_ERROR "Cannot find the toolchain file Emscripten.cmake. " + "Please specify the toolchain file with -DCMAKE_TOOLCHAIN_FILE=<file>.") + endif() + + if(NOT DEFINED BUILD_SHARED_LIBS) + set(BUILD_SHARED_LIBS OFF CACHE BOOL "Build Qt statically or dynamically" FORCE) + endif() + + if(BUILD_SHARED_LIBS) + message(FATAL_ERROR + "Building Qt for ${CMAKE_SYSTEM_NAME} as shared libraries is not supported.") + endif() + # this version of Qt needs this version of emscripten + set(QT_EMCC_RECOMMENDED_VERSION 2.0.14 CACHE STRING INTERNAL FORCE) + endif() + endif() +endfunction() + function(qt_auto_detect_cmake_generator) if(NOT CMAKE_GENERATOR MATCHES "Ninja" AND NOT QT_SILENCE_CMAKE_GENERATOR_WARNING) message(WARNING @@ -340,3 +398,4 @@ qt_auto_detect_ios() qt_auto_detect_android() qt_auto_detect_vpckg() qt_auto_detect_pch() +qt_auto_detect_wasm() |