973d4d56fa
- Add minimal compiler flag testing. - Generate aom_config.c and aom_config.h. Note: hard coded to generic-gnu values for now. - Still a work in progress. This will not build anything. BUG=https://bugs.chromium.org/p/aomedia/issues/detail?id=76 Change-Id: Id65b42ea9f4c4f744d788660e2de7234886ce039
57 lines
2.0 KiB
CMake
57 lines
2.0 KiB
CMake
##
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## Copyright (c) 2016, Alliance for Open Media. All rights reserved
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##
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## This source code is subject to the terms of the BSD 2 Clause License and
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## the Alliance for Open Media Patent License 1.0. If the BSD 2 Clause License
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## was not distributed with this source code in the LICENSE file, you can
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## obtain it at www.aomedia.org/license/software. If the Alliance for Open
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## Media Patent License 1.0 was not distributed with this source code in the
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## PATENTS file, you can obtain it at www.aomedia.org/license/patent.
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##
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cmake_minimum_required(VERSION 3.2)
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include(CheckCCompilerFlag)
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include(CheckCXXCompilerFlag)
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function (add_c_flag_if_supported c_flag)
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unset(C_FLAG_SUPPORTED CACHE)
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message("Checking C compiler flag support for: " ${c_flag})
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check_c_compiler_flag("${c_flag}" C_FLAG_SUPPORTED)
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if (C_FLAG_SUPPORTED)
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set(CMAKE_C_FLAGS "${c_flag} ${CMAKE_C_FLAGS}" CACHE STRING "" FORCE)
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endif ()
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endfunction ()
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function (add_cxx_flag_if_supported cxx_flag)
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unset(CXX_FLAG_SUPPORTED CACHE)
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message("Checking CXX compiler flag support for: " ${cxx_flag})
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check_cxx_compiler_flag("${cxx_flag}" CXX_FLAG_SUPPORTED)
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if (CXX_FLAG_SUPPORTED)
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set(CMAKE_CXX_FLAGS "${cxx_flag} ${CMAKE_CXX_FLAGS}" CACHE STRING "" FORCE)
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endif ()
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endfunction ()
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function (add_compiler_flag_if_supported flag)
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add_c_flag_if_supported(${flag})
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add_cxx_flag_if_supported(${flag})
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endfunction ()
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# Set warning levels.
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if (MSVC)
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add_compiler_flag_if_supported("/W3")
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# Disable MSVC warnings that suggest making code non-portable.
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add_compiler_flag_if_supported("/wd4996")
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if (ENABLE_WERROR)
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add_compiler_flag_if_supported("/WX")
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endif ()
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else ()
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add_compiler_flag_if_supported("-Wall")
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add_compiler_flag_if_supported("-Wextra")
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add_compiler_flag_if_supported("-Wno-deprecated")
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add_compiler_flag_if_supported("-Wshorten-64-to-32")
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add_compiler_flag_if_supported("-Wnarrowing")
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if (ENABLE_WERROR)
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add_compiler_flag_if_supported("-Werror")
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endif ()
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endif ()
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