Merge pull request #617 from ajaypanyala/master

use integer64 flag for Cray Fortran compiler

Author: weslleyspereira

CMAKE/CheckLAPACKCompilerFlags.cmake

@@ -23,7 +23,14 @@ if ( FORTRAN_ILP )
             set(CMAKE_Fortran_FLAGS "${CMAKE_Fortran_FLAGS} -integer-size 64")
         endif()
     else()
-        set(CMAKE_Fortran_FLAGS "${CMAKE_Fortran_FLAGS} -fdefault-integer-8")
+        set(CPE_ENV $ENV{PE_ENV})
+        if(CPE_ENV STREQUAL "CRAY")
+          set(CMAKE_Fortran_FLAGS "${CMAKE_Fortran_FLAGS} -sinteger64")
+        elseif(CPE_ENV STREQUAL "NVIDIA")
+          set(CMAKE_Fortran_FLAGS "${CMAKE_Fortran_FLAGS} -i8")
+        else()
+          set(CMAKE_Fortran_FLAGS "${CMAKE_Fortran_FLAGS} -fdefault-integer-8")  
+        endif()        
     endif()
 endif()