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-rw-r--r--cmake/cmake-cxx11/Modules/CheckCXX11Features.cmake142
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diff --git a/cmake/cmake-cxx11/Modules/CheckCXX11Features.cmake b/cmake/cmake-cxx11/Modules/CheckCXX11Features.cmake
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+# - Check which parts of the C++11 standard the compiler supports
+#
+# When found it will set the following variables
+#
+# CXX11_COMPILER_FLAGS - the compiler flags needed to get C++11 features
+#
+# HAS_CXX11_AUTO - auto keyword
+# HAS_CXX11_AUTO_RET_TYPE - function declaration with deduced return types
+# HAS_CXX11_CLASS_OVERRIDE - override and final keywords for classes and methods
+# HAS_CXX11_CONSTEXPR - constexpr keyword
+# HAS_CXX11_CSTDINT_H - cstdint header
+# HAS_CXX11_DECLTYPE - decltype keyword
+# HAS_CXX11_FUNC - __func__ preprocessor constant
+# HAS_CXX11_INITIALIZER_LIST - initializer list
+# HAS_CXX11_LAMBDA - lambdas
+# HAS_CXX11_LIB_REGEX - regex library
+# HAS_CXX11_LONG_LONG - long long signed & unsigned types
+# HAS_CXX11_NULLPTR - nullptr
+# HAS_CXX11_RVALUE_REFERENCES - rvalue references
+# HAS_CXX11_SIZEOF_MEMBER - sizeof() non-static members
+# HAS_CXX11_STATIC_ASSERT - static_assert()
+# HAS_CXX11_VARIADIC_TEMPLATES - variadic templates
+
+#=============================================================================
+# Copyright 2011,2012 Rolf Eike Beer <[email protected]>
+# Copyright 2012 Andreas Weis
+#
+# Distributed under the OSI-approved BSD License (the "License");
+# see accompanying file Copyright.txt for details.
+#
+# This software is distributed WITHOUT ANY WARRANTY; without even the
+# implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
+# See the License for more information.
+#=============================================================================
+# (To distribute this file outside of CMake, substitute the full
+# License text for the above reference.)
+
+#
+# Each feature may have up to 3 checks, every one of them in it's own file
+# FEATURE.cpp - example that must build and return 0 when run
+# FEATURE_fail.cpp - example that must build, but may not return 0 when run
+# FEATURE_fail_compile.cpp - example that must fail compilation
+#
+# The first one is mandatory, the latter 2 are optional and do not depend on
+# each other (i.e. only one may be present).
+#
+
+if (NOT CMAKE_CXX_COMPILER_LOADED)
+ message(FATAL_ERROR "CheckCXX11Features modules only works if language CXX is enabled")
+endif ()
+
+cmake_minimum_required(VERSION 2.8.3)
+
+#
+### Check for needed compiler flags
+#
+include(CheckCXXCompilerFlag)
+check_cxx_compiler_flag("-std=c++11" _HAS_CXX11_FLAG)
+if (NOT _HAS_CXX11_FLAG)
+ check_cxx_compiler_flag("-std=c++0x" _HAS_CXX0X_FLAG)
+endif ()
+
+if (_HAS_CXX11_FLAG)
+ set(CXX11_COMPILER_FLAGS "-std=c++11")
+elseif (_HAS_CXX0X_FLAG)
+ set(CXX11_COMPILER_FLAGS "-std=c++0x")
+endif ()
+
+function(cxx11_check_feature FEATURE_NAME RESULT_VAR)
+ if (NOT DEFINED ${RESULT_VAR})
+ set(_bindir "${CMAKE_CURRENT_BINARY_DIR}/cxx11_${FEATURE_NAME}")
+
+ set(_SRCFILE_BASE ${CMAKE_CURRENT_LIST_DIR}/CheckCXX11Features/cxx11-test-${FEATURE_NAME})
+ set(_LOG_NAME "\"${FEATURE_NAME}\"")
+ message(STATUS "Checking C++11 support for ${_LOG_NAME}")
+
+ set(_SRCFILE "${_SRCFILE_BASE}.cpp")
+ set(_SRCFILE_FAIL "${_SRCFILE_BASE}_fail.cpp")
+ set(_SRCFILE_FAIL_COMPILE "${_SRCFILE_BASE}_fail_compile.cpp")
+
+ if (CROSS_COMPILING)
+ try_compile(${RESULT_VAR} "${_bindir}" "${_SRCFILE}"
+ COMPILE_DEFINITIONS "${CXX11_COMPILER_FLAGS}")
+ if (${RESULT_VAR} AND EXISTS ${_SRCFILE_FAIL})
+ try_compile(${RESULT_VAR} "${_bindir}_fail" "${_SRCFILE_FAIL}"
+ COMPILE_DEFINITIONS "${CXX11_COMPILER_FLAGS}")
+ endif (${RESULT_VAR} AND EXISTS ${_SRCFILE_FAIL})
+ else (CROSS_COMPILING)
+ try_run(_RUN_RESULT_VAR _COMPILE_RESULT_VAR
+ "${_bindir}" "${_SRCFILE}"
+ COMPILE_DEFINITIONS "${CXX11_COMPILER_FLAGS}")
+ if (_COMPILE_RESULT_VAR AND NOT _RUN_RESULT_VAR)
+ set(${RESULT_VAR} TRUE)
+ else (_COMPILE_RESULT_VAR AND NOT _RUN_RESULT_VAR)
+ set(${RESULT_VAR} FALSE)
+ endif (_COMPILE_RESULT_VAR AND NOT _RUN_RESULT_VAR)
+ if (${RESULT_VAR} AND EXISTS ${_SRCFILE_FAIL})
+ try_run(_RUN_RESULT_VAR _COMPILE_RESULT_VAR
+ "${_bindir}_fail" "${_SRCFILE_FAIL}"
+ COMPILE_DEFINITIONS "${CXX11_COMPILER_FLAGS}")
+ if (_COMPILE_RESULT_VAR AND _RUN_RESULT_VAR)
+ set(${RESULT_VAR} TRUE)
+ else (_COMPILE_RESULT_VAR AND _RUN_RESULT_VAR)
+ set(${RESULT_VAR} FALSE)
+ endif (_COMPILE_RESULT_VAR AND _RUN_RESULT_VAR)
+ endif (${RESULT_VAR} AND EXISTS ${_SRCFILE_FAIL})
+ endif (CROSS_COMPILING)
+ if (${RESULT_VAR} AND EXISTS ${_SRCFILE_FAIL_COMPILE})
+ try_compile(_TMP_RESULT "${_bindir}_fail_compile" "${_SRCFILE_FAIL_COMPILE}"
+ COMPILE_DEFINITIONS "${CXX11_COMPILER_FLAGS}")
+ if (_TMP_RESULT)
+ set(${RESULT_VAR} FALSE)
+ else (_TMP_RESULT)
+ set(${RESULT_VAR} TRUE)
+ endif (_TMP_RESULT)
+ endif (${RESULT_VAR} AND EXISTS ${_SRCFILE_FAIL_COMPILE})
+
+ if (${RESULT_VAR})
+ message(STATUS "Checking C++11 support for ${_LOG_NAME}: works")
+ else (${RESULT_VAR})
+ message(STATUS "Checking C++11 support for ${_LOG_NAME}: not supported")
+ endif (${RESULT_VAR})
+ set(${RESULT_VAR} ${${RESULT_VAR}} CACHE INTERNAL "C++11 support for ${_LOG_NAME}")
+ endif (NOT DEFINED ${RESULT_VAR})
+endfunction(cxx11_check_feature)
+
+cxx11_check_feature("__func__" HAS_CXX11_FUNC)
+cxx11_check_feature("auto" HAS_CXX11_AUTO)
+cxx11_check_feature("auto_ret_type" HAS_CXX11_AUTO_RET_TYPE)
+cxx11_check_feature("class_override_final" HAS_CXX11_CLASS_OVERRIDE)
+cxx11_check_feature("constexpr" HAS_CXX11_CONSTEXPR)
+cxx11_check_feature("cstdint" HAS_CXX11_CSTDINT_H)
+cxx11_check_feature("decltype" HAS_CXX11_DECLTYPE)
+cxx11_check_feature("initializer_list" HAS_CXX11_INITIALIZER_LIST)
+cxx11_check_feature("lambda" HAS_CXX11_LAMBDA)
+cxx11_check_feature("long_long" HAS_CXX11_LONG_LONG)
+cxx11_check_feature("nullptr" HAS_CXX11_NULLPTR)
+cxx11_check_feature("regex" HAS_CXX11_LIB_REGEX)
+cxx11_check_feature("rvalue-references" HAS_CXX11_RVALUE_REFERENCES)
+cxx11_check_feature("sizeof_member" HAS_CXX11_SIZEOF_MEMBER)
+cxx11_check_feature("static_assert" HAS_CXX11_STATIC_ASSERT)
+cxx11_check_feature("variadic_templates" HAS_CXX11_VARIADIC_TEMPLATES)
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