more fixes regarding issue #28 ; added useful cmake variables

README.md

@@ -26,6 +26,13 @@ $ cmake -DCMAKE_INSTALL_PREFIX=/path-install/wi4mpi-%version /path/to/wi4mpi/sou
 $ make -j 4 && make install
 ```
 
+You may use the following environment variables to customize the configure and build steps :
+WI4MPI_COMPILER=<INTEL, GNU, PGI, LLVM, ARMCLANG, FUJITSU>
+
+WI4MPI_RELEASE=<DEBUG, RELEASE, GCC_JITI>
+
+
+
 ## Quick start
 
 WI4MPI dedicated launcher available in /path-install/wi4mpi-%version/bin/mpirun allow an easy use of the

src/interface/header/_MPC/run_mpi.h

@@ -922,6 +922,8 @@ typedef enum {
 } MPC_T_binding;
 
 /** Initialization and Finalization */
+#define R_MPI_T_ERR_INVALID_NAME      73  /* Name doesn't match */
+#define R_MPI_T_ERR_INVALID           74  /* Generic error code for MPI_T added in MPI-3.1 */
 
 /** Initialize the R_MPI_T environment
 * @arg required The level of thread safety required
@@ -931,8 +933,6 @@ typedef enum {
 int R_MPI_T_init_thread(int required, int *provided);
 
 /** Close the R_MPI_T Context
-#define R_MPI_T_ERR_INVALID_NAME      73  /* Name doesn't match */
-#define R_MPI_T_ERR_INVALID           74  /* Generic error code for MPI_T added in MPI-3.1 */
 * @note R_MPI_T does refcounting
 * @return MPI Error
 */