2ed267c820
Rather than fail with obscure can't find Qt packages errors when the Webassembly CMake toolchain file can not be found, error out with a clear error on how to ensure it is found. Pick-to: 6.2 Task-number: QTBUG-96843 Change-Id: I0f34cdcde05efb25c93017f3fd365186335ed52c Reviewed-by: Joerg Bornemann <joerg.bornemann@qt.io>
72 lines
2.9 KiB
CMake
72 lines
2.9 KiB
CMake
# Assuming EMSDK == /path/emsdk
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#
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# Then we expect /path/emsdk/.emscripten file to contain the following line
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# EMSCRIPTEN_ROOT = emsdk_path + '/upstream/emscripten'
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#
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# then we set out_var to '/upstream/emscripten', so it's not a full path
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function(__qt_internal_get_emroot_path_suffix_from_emsdk_env out_var)
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# Query EMSCRIPTEN_ROOT path.
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file(READ "$ENV{EMSDK}/.emscripten" ver)
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string(REGEX MATCH "EMSCRIPTEN_ROOT.*$" EMROOT "${ver}")
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string(REGEX MATCH "'([^' ]*)'" EMROOT2 "${EMROOT}")
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string(REPLACE "'" "" EMROOT_PATH "${EMROOT2}")
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set(${out_var} "${EMROOT_PATH}" PARENT_SCOPE)
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endfunction()
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function(__qt_internal_get_emscripten_cmake_toolchain_file_path_from_emsdk_env emroot_path out_var)
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set(wasm_toolchain_file "$ENV{EMSDK}/${emroot_path}/cmake/Modules/Platform/Emscripten.cmake")
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set(${out_var} "${wasm_toolchain_file}" PARENT_SCOPE)
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endfunction()
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function(__qt_internal_query_emsdk_version emroot_path is_fatal out_var)
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# get emscripten version
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if(CMAKE_HOST_SYSTEM_NAME STREQUAL "Windows")
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set(EXECUTE_COMMANDPATH "$ENV{EMSDK}/${emroot_path}/emcc.bat")
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else()
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set(EXECUTE_COMMANDPATH "$ENV{EMSDK}/${emroot_path}/emcc")
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endif()
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file(TO_NATIVE_PATH "${EXECUTE_COMMANDPATH}" EXECUTE_COMMAND)
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execute_process(COMMAND ${EXECUTE_COMMAND} --version
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OUTPUT_VARIABLE emOutput
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OUTPUT_STRIP_TRAILING_WHITESPACE
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ERROR_VARIABLE emrun_error
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RESULT_VARIABLE result)
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message(DEBUG "emcc --version output: ${emOutput}")
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if(NOT emOutput)
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if(is_fatal)
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message(FATAL_ERROR
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"Couldn't determine Emscripten version from running ${EXECUTE_COMMAND} --version. "
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"Error: ${emrun_error}")
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endif()
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set(${out_var} "" PARENT_SCOPE)
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else()
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string(REGEX MATCH "[0-9]+\\.[0-9]+\\.[0-9]+" CMAKE_EMSDK_REGEX_VERSION "${emOutput}")
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set(${out_var} "${CMAKE_EMSDK_REGEX_VERSION}" PARENT_SCOPE)
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endif()
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endfunction()
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function(__qt_internal_get_emcc_recommended_version out_var)
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# This version of Qt needs this version of emscripten.
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set(QT_EMCC_RECOMMENDED_VERSION "2.0.14")
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set(${out_var} "${QT_EMCC_RECOMMENDED_VERSION}" PARENT_SCOPE)
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endfunction()
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function(__qt_internal_show_error_no_emscripten_toolchain_file_found_when_building_qt)
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message(FATAL_ERROR
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"Cannot find the toolchain file Emscripten.cmake. "
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"Please specify the toolchain file with -DCMAKE_TOOLCHAIN_FILE=<file> "
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"or provide a path to a valid emscripten installation via the EMSDK "
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"environment variable.")
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endfunction()
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function(__qt_internal_show_error_no_emscripten_toolchain_file_found_when_using_qt)
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message(FATAL_ERROR
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"Cannot find the toolchain file Emscripten.cmake. "
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"Please specify the toolchain file with -DQT_CHAINLOAD_TOOLCHAIN_FILE=<file> "
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"or provide a path to a valid emscripten installation via the EMSDK "
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"environment variable.")
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endfunction()
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