1 # Copyright (c) 2016, Intel Corporation 2 # All rights reserved. 3 # 4 # Redistribution and use in source and binary forms, with or without modification, 5 # are permitted provided that the following conditions are met: 6 # 7 # 1. Redistributions of source code must retain the above copyright notice, this 8 # list of conditions and the following disclaimer. 9 # 10 # 2. Redistributions in binary form must reproduce the above copyright notice, 11 # this list of conditions and the following disclaimer in the documentation and/or 12 # other materials provided with the distribution. 13 # 14 # 3. Neither the name of the copyright holder nor the names of its contributors 15 # may be used to endorse or promote products derived from this software without 16 # specific prior written permission. 17 # 18 # THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND 19 # ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED 20 # WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE 21 # DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR 22 # ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES 23 # (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 24 # LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON 25 # ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 26 # (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS 27 # SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 28 29 add_library(asio INTERFACE) 30 31 if (NETWORKING) 32 # Find ASIO (the standalone version, not Boost) If asio isn't installed in 33 # a standard directory, add the correct directory to CMAKE_PREFIX_PATH (see 34 # the main README for more information). 35 find_path(ASIO_DIR NAMES asio.hpp) 36 # Hide this variable from CMake GUIs and `cmake -L` 37 set_property(CACHE ASIO_DIR PROPERTY ADVANCED TRUE) 38 if (NOT ASIO_DIR) 39 message(SEND_ERROR 40 " ASIO header (asio.hpp) could not be found. 41 ASIO is used for networking. On Linux, you should install it using your 42 package manager. On Windows, please refer to the main README.") 43 endif() 44 45 # Ubuntu 14.04 packages asio 1.10.1 and clang 3.4.1. 46 # In this environment, asio stand alone (set ASIO_STANDALONE) 47 # does not correcly detect that the stl has CHRONO support (c++11). 48 # Force the use of std::chrono by setting ASIO_HAS_STD_CHRONO 49 target_include_directories(asio SYSTEM INTERFACE "${ASIO_DIR}") 50 target_link_libraries(asio INTERFACE "${CMAKE_THREAD_LIBS_INIT}") 51 target_compile_definitions(asio 52 INTERFACE ASIO_STANDALONE 53 INTERFACE ASIO_HAS_STD_CHRONO) 54 else() 55 # Stubbed version 56 target_include_directories(asio INTERFACE "${CMAKE_CURRENT_SOURCE_DIR}/stub") 57 endif() 58
