f7953cdee6
There's no guarantee that qconfig.h will be present when __qt_internal_get_qt_build_emsdk_version() is called during configure, since the file is written by a file(GENERATE) call which does not write the file immediately. Handle this case and allow configure to complete. Change-Id: Iab85790f9f133fd1ba5f276cdd7bc55f9af1d980 Pick-to: 6.6 Reviewed-by: Lorn Potter <lorn.potter@gmail.com> Reviewed-by: Piotr Wierciński <piotr.wiercinski@qt.io>
109 lines
4.6 KiB
CMake
109 lines
4.6 KiB
CMake
# Copyright (C) 2022 The Qt Company Ltd.
|
|
# SPDX-License-Identifier: BSD-3-Clause
|
|
|
|
# Assuming EMSDK == /path/emsdk
|
|
#
|
|
# Then we expect /path/emsdk/.emscripten file to contain the following line
|
|
# EMSCRIPTEN_ROOT = emsdk_path + '/upstream/emscripten'
|
|
#
|
|
# then we set out_var to '/upstream/emscripten', so it's not a full path
|
|
function(__qt_internal_get_emroot_path_suffix_from_emsdk_env out_var)
|
|
# Query 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 "${EMROOT2}")
|
|
|
|
set(${out_var} "${EMROOT_PATH}" PARENT_SCOPE)
|
|
endfunction()
|
|
|
|
function(__qt_internal_get_emscripten_cmake_toolchain_file_path_from_emsdk_env emroot_path out_var)
|
|
set(wasm_toolchain_file "$ENV{EMSDK}/${emroot_path}/cmake/Modules/Platform/Emscripten.cmake")
|
|
set(${out_var} "${wasm_toolchain_file}" PARENT_SCOPE)
|
|
endfunction()
|
|
|
|
function(__qt_internal_query_emsdk_version emroot_path is_fatal out_var)
|
|
# get emscripten version
|
|
if(CMAKE_HOST_SYSTEM_NAME STREQUAL "Windows")
|
|
set(EXECUTE_COMMANDPATH "$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)
|
|
message(DEBUG "emcc --version output: ${emOutput}")
|
|
|
|
if(NOT emOutput)
|
|
if(is_fatal)
|
|
message(FATAL_ERROR
|
|
"Couldn't determine Emscripten version from running ${EXECUTE_COMMAND} --version. "
|
|
"Error: ${emrun_error}")
|
|
endif()
|
|
set(${out_var} "" PARENT_SCOPE)
|
|
else()
|
|
string(REGEX MATCH "[0-9]+\\.[0-9]+\\.[0-9]+" CMAKE_EMSDK_REGEX_VERSION "${emOutput}")
|
|
set(${out_var} "${CMAKE_EMSDK_REGEX_VERSION}" PARENT_SCOPE)
|
|
endif()
|
|
endfunction()
|
|
|
|
function(__qt_internal_get_emcc_recommended_version out_var)
|
|
# This version of Qt needs this version of emscripten.
|
|
set(QT_EMCC_RECOMMENDED_VERSION "3.1.37")
|
|
set(${out_var} "${QT_EMCC_RECOMMENDED_VERSION}" PARENT_SCOPE)
|
|
endfunction()
|
|
|
|
function(__qt_internal_show_error_no_emscripten_toolchain_file_found_when_building_qt)
|
|
message(FATAL_ERROR
|
|
"Cannot find the toolchain file Emscripten.cmake. "
|
|
"Please specify the toolchain file with -DCMAKE_TOOLCHAIN_FILE=<file> "
|
|
"or provide a path to a valid emscripten installation via the EMSDK "
|
|
"environment variable.")
|
|
endfunction()
|
|
|
|
function(__qt_internal_show_error_no_emscripten_toolchain_file_found_when_using_qt)
|
|
message(FATAL_ERROR
|
|
"Cannot find the toolchain file Emscripten.cmake. "
|
|
"Please specify the toolchain file with -DQT_CHAINLOAD_TOOLCHAIN_FILE=<file> "
|
|
"or provide a path to a valid emscripten installation via the EMSDK "
|
|
"environment variable.")
|
|
endfunction()
|
|
|
|
function(__qt_internal_get_qt_build_emsdk_version out_var)
|
|
if(QT6_INSTALL_PREFIX)
|
|
set(WASM_BUILD_DIR "${QT6_INSTALL_PREFIX}")
|
|
elseif(QT_BUILD_DIR)
|
|
set(WASM_BUILD_DIR "${QT_BUILD_DIR}")
|
|
endif()
|
|
if(EXISTS "${WASM_BUILD_DIR}/src/corelib/global/qconfig.h")
|
|
file(READ "${WASM_BUILD_DIR}/src/corelib/global/qconfig.h" ver)
|
|
elseif(EXISTS "${WASM_BUILD_DIR}/include/QtCore/qconfig.h")
|
|
file(READ "${WASM_BUILD_DIR}/include/QtCore/qconfig.h" ver)
|
|
else()
|
|
message("qconfig.h not found, unable to determine Qt build Emscripten version")
|
|
endif()
|
|
if (ver)
|
|
string(REGEX MATCH "#define QT_EMCC_VERSION.\"[0-9]+\\.[0-9]+\\.[0-9]+\"" emOutput ${ver})
|
|
string(REGEX MATCH "[0-9]+\\.[0-9]+\\.[0-9]+" build_emcc_version "${emOutput}")
|
|
set(${out_var} "${build_emcc_version}" PARENT_SCOPE)
|
|
endif()
|
|
endfunction()
|
|
|
|
function(_qt_test_emscripten_version)
|
|
__qt_internal_get_emcc_recommended_version(_recommended_emver)
|
|
__qt_internal_get_emroot_path_suffix_from_emsdk_env(emroot_path)
|
|
__qt_internal_query_emsdk_version("${emroot_path}" TRUE current_emsdk_ver)
|
|
__qt_internal_get_qt_build_emsdk_version(qt_build_emcc_version)
|
|
|
|
if(NOT "${qt_build_emcc_version}" STREQUAL "${current_emsdk_ver}")
|
|
message("Qt Wasm built with Emscripten version: ${qt_build_emcc_version}")
|
|
message("You are using Emscripten version: ${current_emsdk_ver}")
|
|
message("The recommended version of Emscripten for this Qt is: ${_recommended_emver}")
|
|
message("This may not work correctly")
|
|
endif()
|
|
endfunction()
|