# - Try to find the Clang/LLVM executable# Once done this will define## EMSCRIPTEN_FOUND - system has Clang# EMSCRIPTEN_VERSION - Clang version# EMSCRIPTEN_EXECUTABLE - Clang executable## Copyright (c) 2013, Vittorio Giovara <vittorio.giovara@gmail.com>## Redistribution and use is allowed according to the terms of the BSD license.# For details see the accompanying COPYING-CMAKE-SCRIPTS file.find_program(EMSCRIPTEN_EXECUTABLE NAMES emcc PATHS /opt/local/bin /usr/local/bin /usr/bin)if (EMSCRIPTEN_EXECUTABLE) execute_process(COMMAND ${EMSCRIPTEN_EXECUTABLE} -v OUTPUT_VARIABLE EMSCRIPTEN_VERSION_OUTPUT ERROR_VARIABLE EMSCRIPTEN_VERSION_ERROR RESULT_VARIABLE EMSCRIPTEN_VERSION_RESULT OUTPUT_STRIP_TRAILING_WHITESPACE ) if(${EMSCRIPTEN_VERSION_RESULT} EQUAL 0) string(REGEX MATCH "[0-9]+\\.[0-9]+\\.[0-9]+" EMSCRIPTEN_VERSION "${EMSCRIPTEN_VERSION_OUTPUT}") string(REGEX REPLACE "([0-9]+\\.[0-9]+\\.[0-9]+)" "\\1" EMSCRIPTEN_VERSION "${EMSCRIPTEN_VERSION}") else() message(SEND_ERROR "Command \"${EMSCRIPTEN_EXECUTABLE} --version\" failed with output: ${EMSCRIPTEN_VERSION_ERROR}") endif()endif()include(FindPackageHandleStandardArgs)find_package_handle_standard_args(Emscripten DEFAULT_MSG EMSCRIPTEN_EXECUTABLE EMSCRIPTEN_VERSION)mark_as_advanced(EMSCRIPTEN_VERSION)