1 files changed, 85 insertions, 0 deletions
diff --git a/src/boost/libs/hana/cmake/CheckCxxCompilerSupport.cmake b/src/boost/libs/hana/cmake/CheckCxxCompilerSupport.cmake
new file mode 100644
index 000000000..0b5d72a6a
--- /dev/null
+++ b/src/boost/libs/hana/cmake/CheckCxxCompilerSupport.cmake
@@ -0,0 +1,85 @@
+# Copyright Louis Dionne 2013-2017
+# Copyright Markus J. Weber 2015
+# Distributed under the Boost Software License, Version 1.0.
+# (See accompanying file LICENSE.md or copy at http://boost.org/LICENSE_1_0.txt)
+#
+#
+# This CMake module checks whether the current compiler is supported, and
+# provides friendly hints to the user.
+
+if (${CMAKE_CXX_COMPILER_ID} STREQUAL "Clang")
+    if (${CMAKE_CXX_COMPILER_VERSION} VERSION_LESS "3.9.1")
+        message(WARNING "
+    ### You appear to be using Clang ${CMAKE_CXX_COMPILER_VERSION}, which is known
+    ### to be unable to compile Hana. Consider switching to
+    ### Clang >= 3.9.1. If it is already installed on your
+    ### system, you can tell CMake about it with
+    ###
+    ###     cmake .. -DCMAKE_CXX_COMPILER=/path/to/clang
+        ")
+    endif()
+
+    if (MSVC)
+        if(${MSVC_VERSION} LESS 1900)
+            message(WARNING "
+    ###
+    ### We detected that you were using Clang for Windows with a
+    ### -fms-compatibility-version parameter lower than 19. Only
+    ### -fms-compatibility-version=19 and above are supported by
+    ### Hana for lack of proper C++14 support prior for versions
+    ### below that.
+    ###
+    ### If this diagnostic is wrong and you are not using
+    ### -fms-compatibility-version, please file an issue at
+    ### https://github.com/boostorg/hana/issues.
+    ###
+            ")
+        endif()
+    endif()
+elseif (${CMAKE_CXX_COMPILER_ID} STREQUAL "AppleClang")
+    if (${CMAKE_CXX_COMPILER_VERSION} VERSION_LESS "6.1.0")
+        message(WARNING "
+    ### You appear to be using Apple's Clang ${CMAKE_CXX_COMPILER_VERSION}, which is
+    ### shipped with Xcode < 6.3. Unfortunately, only Apple's Clang
+    ### >= 6.1.0 (shipped with Xcode >= 6.3) can compile Hana.
+    ### You should consider updating to Xcode >= 6.3 (requires Yosemite)
+    ### or using a non-Apple Clang >= 3.9.1, which can be installed via
+    ### Homebrew with
+    ###
+    ###     brew install llvm --with-clang
+    ###
+    ### You can then tell CMake to use that non-system Clang with
+    ###
+    ###     cmake .. -DCMAKE_CXX_COMPILER=/path/to/clang
+        ")
+    endif()
+elseif (${CMAKE_CXX_COMPILER_ID} STREQUAL "GNU")
+    if (${CMAKE_CXX_COMPILER_VERSION} VERSION_LESS "6.0.0")
+        message(WARNING "
+    ### You appear to be using GCC ${CMAKE_CXX_COMPILER_VERSION}, which is known to be
+    ### unable to compile Hana. Only GCC >= 6.0.0 is supported.
+    ### Consider using a more recent GCC or switching to Clang.
+    ### If a more recent compiler is already installed on your
+    ### system, you can tell CMake to use it with
+    ###
+    ###     cmake .. -DCMAKE_CXX_COMPILER=/path/to/compiler
+        ")
+    endif()
+elseif (MSVC)
+    message(WARNING "
+    ### Using the native Microsoft compiler (MSVC) is not supported for lack
+    ### of proper C++14 support. However, you can install pre-built Clang for
+    ### Windows binaries (with Visual Studio integration if desired) at
+    ### http://llvm.org/releases/download.html.
+    ###
+    ### More information about how to set up Hana with Clang for Windows is
+    ### available on Hana's wiki at http://git.io/vBYIp.
+    ")
+else()
+    message(WARNING "
+    ### You appear to be using a compiler that is not yet tested with Hana.
+    ### Please tell us whether it successfully compiles or if and how it
+    ### fails by opening an issue at https://github.com/boostorg/hana/issues.
+    ### Thanks!
+    ")
+endif()