Add initial support for python bindings

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

diff --git a/cmake/gmxTestMPI_IN_PLACE.cmake b/cmake/gmxTestMPI_IN_PLACE.cmake
index 40d395775322ca34203ffd0cde1c44d05c5cfa30..3ed73251a9f4d8ffa47ac40e902aa88b7fb39fac 100644 (file)
--- a/cmake/gmxTestMPI_IN_PLACE.cmake
+++ b/cmake/gmxTestMPI_IN_PLACE.cmake
@@ -1,3 +1,37 @@
+#
+# This file is part of the GROMACS molecular simulation package.
+#
+# Copyright (c) 2009,2011,2012,2014, 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.
+
 # - Define macro to check if MPI_IN_PLACE exists
 #
 #  GMX_TEST_MPI_IN_PLACE(VARIABLE)
@@ -5,20 +39,35 @@
 #  VARIABLE will be set to true if MPI_IN_PLACE exists
 #
 
+include(CheckCSourceCompiles)
 MACRO(GMX_TEST_MPI_IN_PLACE VARIABLE)
+  if(NOT DEFINED MPI_IN_PLACE_COMPILE_OK)
     MESSAGE(STATUS "Checking for MPI_IN_PLACE")
-    # First check without any special flags
-    TRY_COMPILE(MPI_IN_PLACE_COMPILE_OK ${CMAKE_BINARY_DIR}
-                    "${CMAKE_SOURCE_DIR}/cmake/TestMPI_IN_PLACE.c"
-                    COMPILE_DEFINITIONS )
+
+    set(CMAKE_REQUIRED_DEFINITIONS ${MPI_COMPILE_FLAGS})
+    set(CMAKE_REQUIRED_INCLUDES ${MPI_INCLUDE_PATH})
+    set(CMAKE_REQUIRED_LIBRARIES ${MPI_LIBRARIES})
+    check_c_source_compiles(
+      "#include <mpi.h>
+int main(void) {
+  void* buf;
+  MPI_Allreduce(MPI_IN_PLACE, buf, 10, MPI_FLOAT, MPI_SUM, MPI_COMM_WORLD);
+}" MPI_IN_PLACE_COMPILE_OK)
 
     if(MPI_IN_PLACE_COMPILE_OK)
-    MESSAGE(STATUS "Checking for MPI_IN_PLACE - yes")
-        set(${VARIABLE} ${MPI_IN_PLACE_COMPILE_OK} 
-                "Result of test for MPI_IN_PLACE")
-    else(MPI_IN_PLACE_COMPILE_OK)
+        MESSAGE(STATUS "Checking for MPI_IN_PLACE - yes")
+    else()
         MESSAGE(STATUS "Checking for MPI_IN_PLACE - no")
-    endif(MPI_IN_PLACE_COMPILE_OK)
+    endif()
+    set(MPI_IN_PLACE_COMPILE_OK "${MPI_IN_PLACE_COMPILE_OK}" CACHE INTERNAL "Result of mpi_in_place check")
+    set(CMAKE_REQUIRED_DEFINITIONS)
+    set(CMAKE_REQUIRED_INCLUDES)
+    set(CMAKE_REQUIRED_LIBRARIES)
+  endif()
+  if (MPI_IN_PLACE_COMPILE_OK)
+    set(${VARIABLE} ${MPI_IN_PLACE_COMPILE_OK}
+      "Result of test for MPI_IN_PLACE")
+  endif()
 ENDMACRO(GMX_TEST_MPI_IN_PLACE VARIABLE)