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# - 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)
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