diff --git a/CMakeLists.txt b/CMakeLists.txt
index 066a0af..1a91854 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -1,9 +1,12 @@
-cmake_minimum_required(VERSION 2.8.0)
+cmake_minimum_required(VERSION 3.0.0)
 project(wi4mpi)
 
 if(POLICY CMP0054)
     cmake_policy(SET CMP0054 NEW)
 endif()
+if(POLICY CMP0057)
+    CMAKE_POLICY(SET CMP0057 NEW)
+endif()
 
 set(VERSION_MAJOR 3)
 set(VERSION_MINOR 5)
@@ -119,26 +122,30 @@ else()
    set(WI4MPI_FLAGS ${CMAKE_C_FLAGS_NORMAL})
 endif()
 
+set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -fcommon")
+
 find_package(MPI REQUIRED) 
 if(MPI_C_FOUND AND MPI_Fortran_FOUND) #Need to be OpenMPI
   if(NOT DEFINED OPENMPI_ROOT)
-    execute_process(COMMAND "${MPI_C_COMPILER}" -show
+    execute_process(COMMAND "${MPI_C_COMPILER}" --showme:version
                     OUTPUT_VARIABLE ERR_VAR1
-                    OUTPUT_FILE "compiler_out"
+                    OUTPUT_FILE "compiler_version"
                     ERROR_QUIET)
-    execute_process(COMMAND "grep" openmpi
-                    INPUT_FILE "compiler_out"
+    execute_process(COMMAND "grep" -i "Open MPI"
+                    INPUT_FILE "compiler_version"
                     OUTPUT_VARIABLE ERR_VAR2
                     RESULT_VARIABLE COMMAND_RESULT1
                     ERROR_QUIET)
-    #execute_process(COMMAND "${MPI_C_COMPILER}" -show
-    #                COMMAND "grep" -io openmpi
-    #                 RESULT_VARIABLE RV)
-    #message(STATUS "res command : ${ERR_VAR2}")
+    message(STATUS "res command : ${ERR_VAR2}")
     if(NOT ERR_VAR2)
       message(FATAL_ERROR "Be sure to have an OpenMPI librarie in your PATH or set -DOPENMPI_ROOT=...")
     endif()
-        get_filename_component(OPENMPI_ROOT ${MPI_C_INCLUDE_PATH} DIRECTORY)
+    foreach(p ${MPI_C_INCLUDE_PATH})
+      get_filename_component(OPENMPI_ROOT_TEST ${p} DIRECTORY)
+      if(EXISTS "${OPENMPI_ROOT_TEST}/lib")
+        set(OPENMPI_ROOT ${OPENMPI_ROOT_TEST})
+      endif ()
+    endforeach(p) 
   endif()
 endif()
 
diff --git a/Testing/compile/CMakeLists.txt b/Testing/compile/CMakeLists.txt
index 174f681..8da3273 100644
--- a/Testing/compile/CMakeLists.txt
+++ b/Testing/compile/CMakeLists.txt
@@ -1,5 +1,5 @@
 project (compile)
-cmake_minimum_required (VERSION 2.8)
+cmake_minimum_required (VERSION 3.0.0)
 
 # Copy source files
 set (LIST_FILES mpi_init.c mpi_init.cpp mpi_init.f mpi_init.f90)
diff --git a/Testing/mpi_init/CMakeLists.txt b/Testing/mpi_init/CMakeLists.txt
index f60d77e..13a8da1 100644
--- a/Testing/mpi_init/CMakeLists.txt
+++ b/Testing/mpi_init/CMakeLists.txt
@@ -1,5 +1,5 @@
 project (mpi_init)
-cmake_minimum_required (VERSION 2.8)
+cmake_minimum_required (VERSION 3.0.0)
 
 # Copy source files
 set (LIST_FILES mpi_init.c mpi_init.cpp mpi_init.f mpi_init.f90)
diff --git a/Testing/mpiio/CMakeLists.txt b/Testing/mpiio/CMakeLists.txt
index e5b513a..b8ffd51 100644
--- a/Testing/mpiio/CMakeLists.txt
+++ b/Testing/mpiio/CMakeLists.txt
@@ -1,5 +1,5 @@
 project (mpiio)
-cmake_minimum_required (VERSION 2.8)
+cmake_minimum_required (VERSION 3.0.0)
 
 # Add tests
 file (COPY ${CMAKE_CURRENT_SOURCE_DIR}/run_mpi_file_open_tests.sh
diff --git a/Testing/mpirun/CMakeLists.txt b/Testing/mpirun/CMakeLists.txt
index 7d473b8..ab890e7 100644
--- a/Testing/mpirun/CMakeLists.txt
+++ b/Testing/mpirun/CMakeLists.txt
@@ -1,5 +1,5 @@
 project (mpirun)
-cmake_minimum_required (VERSION 2.8)
+cmake_minimum_required (VERSION 3.0.0)
 
 # Add tests
 file (COPY ${CMAKE_CURRENT_SOURCE_DIR}/run_mpirun_tests.sh
diff --git a/Testing/timeout/CMakeLists.txt b/Testing/timeout/CMakeLists.txt
index 952a89f..3202b8d 100644
--- a/Testing/timeout/CMakeLists.txt
+++ b/Testing/timeout/CMakeLists.txt
@@ -1,5 +1,5 @@
 project (timeout)
-cmake_minimum_required (VERSION 2.8)
+cmake_minimum_required (VERSION 3.0.0)
 
 file (COPY ${CMAKE_CURRENT_SOURCE_DIR}/timeout_slow_add.c
         DESTINATION ${CMAKE_CURRENT_BINARY_DIR})