Clarify GCC+Win+AVX warning

[alexxy/gromacs.git] / cmake / gmxTestCompilerProblems.cmake

diff --git a/cmake/gmxTestCompilerProblems.cmake b/cmake/gmxTestCompilerProblems.cmake
index ec4fed218535fd483a48a60f39957c49408e0d6a..a8cdb870df10e7f0cfbebe22e6928e79ef0f41f7 100644 (file)
--- a/cmake/gmxTestCompilerProblems.cmake
+++ b/cmake/gmxTestCompilerProblems.cmake
@@ -1,7 +1,7 @@
 #
 # This file is part of the GROMACS molecular simulation package.
 #
-# Copyright (c) 2012,2013, by the GROMACS development team, led by
+# Copyright (c) 2012,2013,2014, by the GROMACS development team, led by
 # Mark Abraham, David van der Spoel, Berk Hess, and Erik Lindahl,
 # and including many others, as listed in the AUTHORS file in the
 # top-level source directory and at http://www.gromacs.org.
@@ -80,6 +80,22 @@ macro(gmx_test_compiler_problems)
         message(WARNING "All tested PGI compiler versions (up to 12.9.0) generate binaries which produce incorrect results, or even fail to  compile Gromacs. Highly recommended to use a different compiler. If you choose to use PGI, make sure to run the regressiontests.")
     endif()
 
+    if(CMAKE_COMPILER_IS_GNUCC AND
+            (CMAKE_C_COMPILER_VERSION VERSION_LESS "4.9.0" OR CMAKE_SIZEOF_VOID_P EQUAL 8)
+            AND (WIN32 OR CYGWIN)
+            AND GMX_SIMD MATCHES "AVX" AND NOT GMX_SIMD STREQUAL AVX_128_FMA)
+        message(WARNING "GCC on Windows (GCC older than 4.9 or any version when compiling for 64bit) with AVX (other than AVX_128_FMA) crashes. Choose a different GMX_SIMD or a different compiler.") # GCC bug 49001, 54412.
+    endif()
+
+    if(CMAKE_C_COMPILER_ID MATCHES "Clang" AND WIN32 AND NOT CYGWIN)
+        if(CMAKE_VERSION VERSION_LESS 3.0.0)
+            message(WARNING "Clang on Windows requires cmake 3.0.0")
+        endif()
+        if(CMAKE_C_COMPILER_VERSION VERSION_LESS 3.5.0)
+            message(WARNING "Clang on Windows requires clang 3.5.0")
+        endif()
+    endif()
+
     if(CMAKE_C_COMPILER_ID MATCHES "Intel" AND CMAKE_C_COMPILER_VERSION VERSION_LESS "12.0.0")
         message(WARNING "Intel compilers before 12.0.0 are not routinely tested, so there may be problems. Version 11.1 with SSE4.1 is known to produce incorrect results. It is highly recommended to use a more up-to-date compiler. If you choose to use this version, make sure you run the regressiontests.")
     endif()