Add MPI_LIBRARY_VERSION constant (#354)

Author: kpamnany

deps/build.jl

@@ -72,6 +72,8 @@ end
 
 MPI_VERSION = Get_version()
 
+@info "MPI version:\n$(MPI_VERSION)"
+
 function Get_library_version()
     # There is no way to query at runtime what the length of the buffer should be.  
     # https://github.com/mpi-forum/mpi-issues/issues/159    
@@ -88,7 +90,9 @@ function Get_library_version()
     return String(buf)
 end
 
-@info "MPI library version:\n$(Get_library_version())"
+MPI_LIBRARY_VERSION = Get_library_version()
+
+@info "MPI library version:\n$(MPI_LIBRARY_VERSION)"
 
 open("deps.jl","w") do f
     println(f, "# This file is automatically generated")
@@ -97,6 +101,7 @@ open("deps.jl","w") do f
     println(f, :(const libmpi = $libmpi))
     println(f, :(const libmpi_size = $libsize))
     println(f, :(const MPI_VERSION = $MPI_VERSION))
+    println(f, :(const MPI_LIBRARY_VERSION = $MPI_LIBRARY_VERSION))
     println(f, :(const mpiexec_path = $mpiexec_path))
 
     if Sys.iswindows()