Add initial support for python bindings

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

diff --git a/cmake/gmxManageNvccConfig.cmake b/cmake/gmxManageNvccConfig.cmake
index d7743c24e907b8951f4c82ed8b237a28c3e02b6b..33d42ea6991e9d3dbcdb80affc1a84f04dfeab4f 100644 (file)
--- a/cmake/gmxManageNvccConfig.cmake
+++ b/cmake/gmxManageNvccConfig.cmake
@@ -1,3 +1,37 @@
+#
+# This file is part of the GROMACS molecular simulation package.
+#
+# 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.
+#
+# GROMACS is free software; you can redistribute it and/or
+# modify it under the terms of the GNU Lesser General Public License
+# as published by the Free Software Foundation; either version 2.1
+# of the License, or (at your option) any later version.
+#
+# GROMACS is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+# Lesser General Public License for more details.
+#
+# You should have received a copy of the GNU Lesser General Public
+# License along with GROMACS; if not, see
+# http://www.gnu.org/licenses, or write to the Free Software Foundation,
+# Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA.
+#
+# If you want to redistribute modifications to GROMACS, please
+# consider that scientific software is very special. Version
+# control is crucial - bugs must be traceable. We will be happy to
+# consider code for inclusion in the official distribution, but
+# derived work must not be called official GROMACS. Details are found
+# in the README & COPYING files - if they are missing, get the
+# official version at http://www.gromacs.org.
+#
+# To help us fund GROMACS development, we humbly ask that you cite
+# the research papers on the package. Check out http://www.gromacs.org.
+
 # Manage CUDA nvcc compilation configuration, try to be smart to ease the users'
 # pain as much as possible:
 # - use the CUDA_HOST_COMPILER if defined by the user, otherwise
@@ -72,7 +106,7 @@ if (NOT DEFINED CUDA_NVCC_FLAGS_SET)
 
         # On *nix force icc in gcc 4.4 compatibility mode with CUDA 3.2/4.0 and
         # gcc 4.5 compatibility mode with later CUDA versions. This is needed
-        # as even with icc use as host compiler, when icc's gcc compatibility
+        # as even with icc used as host compiler, when icc's gcc compatibility
         # mode is higher than the max gcc version officially supported by CUDA,
         # nvcc will freak out.
         if (UNIX AND CMAKE_C_COMPILER_ID MATCHES "Intel" AND
@@ -91,22 +125,25 @@ if (NOT DEFINED CUDA_NVCC_FLAGS_SET)
         mark_as_advanced(CUDA_HOST_COMPILER CUDA_HOST_COMPILER_OPTIONS)
     endif()
 
-    # on Linux we need to add -fPIC when building shared gmx libs
-    # Note: will add -fPIC for any compiler that supports it as it shouldn't hurt
-    if(BUILD_SHARED_LIBS)
-        GMX_TEST_CXXFLAG(CXXFLAG_FPIC "-fPIC" _FPIC_NVCC_FLAG)
-        if(_FPIC_NVCC_FLAG)
-            set(CUDA_HOST_COMPILER_OPTIONS "${CUDA_HOST_COMPILER_OPTIONS}-Xcompiler;${_FPIC_NVCC_FLAG}")
-        endif()
+    if(APPLE AND CMAKE_C_COMPILER_ID MATCHES "GNU")
+        # Some versions of gcc-4.8 and gcc-4.9 produce errors (in particular on OS X)
+        # if we do not use -D__STRICT_ANSI__. It is harmless, so we might as well add it for all versions.
+        set(CUDA_HOST_COMPILER_OPTIONS "${CUDA_HOST_COMPILER_OPTIONS}-D__STRICT_ANSI__;")
+    endif()
+
+    # the legacy CUDA kernels have been dropped, warn with CUDA 4.0
+    if (CUDA_VERSION VERSION_EQUAL "4.0")
+        message(WARNING "The legacy GPU kernels optimized for older CUDA compilers, including the detected version 4.0, have been removed. To avoid performance loss, we strongly recommend upgrading to a newer CUDA toolkit.
+        ")
     endif()
 
     # Set the CUDA GPU architectures to compile for:
     # - with CUDA >v4.2 compute capability 2.0, 2.1 is, but 3.0 is not supported:
     #     => compile sm_20, sm_21 cubin, and compute_20 PTX
-    # - with CUDA >=4.2 compute capabity <=3.0 is supported:
+    # - with CUDA >=4.2 compute capability <=3.0 is supported:
     #     => compile sm_20, sm_21, sm_30 cubin, and compute_30 PTX
-    # - with CUDA 5.0 compute capabity 3.5 is supported, but generating code
-    #   optimized for sm_35 results in lower performance than with sm_30.
+    # - with CUDA 5.0 and later compute capability 3.5 is supported
+    #     => compile sm_20, sm_21, sm_30, sm_35 cubin, and compute_35 PTX
     if(CUDA_VERSION VERSION_LESS "4.2")
         set(_CUDA_ARCH_STR "-gencode;arch=compute_20,code=sm_20;-gencode;arch=compute_20,code=sm_21;-gencode;arch=compute_20,code=compute_20")
     elseif(CUDA_VERSION VERSION_LESS "5.0")