Support nvfortran compiler (#92)

nvfortran is bundled with the NVIDIA HPC SDK.

Author: kvrigor

cmake/SetBuildOptions.cmake

@@ -44,6 +44,14 @@ elseif(COMPILER STREQUAL "Intel" OR COMPILER STREQUAL "IntelLLVM")
       set(CMAKE_Fortran_FLAGS_DEBUG "-O0 -g -fpe0 -check all")
     endif()
     set(CMAKE_Fortran_FLAGS_RELEASE "-O2 -debug minimal")
+elseif(COMPILER STREQUAL "NVHPC")
+    add_compile_definitions(CPRNVHPC)
+    set(CMAKE_C_FLAGS "-fPIC")
+    set(CMAKE_C_FLAGS_DEBUG "-g -O0")
+    set(CMAKE_C_FLAGS_RELEASE "-Ofast")
+    set(CMAKE_Fortran_FLAGS "-fPIC")
+    set(CMAKE_Fortran_FLAGS_DEBUG "-g -O0")
+    set(CMAKE_Fortran_FLAGS_RELEASE "-Ofast") 
 elseif(COMPILER STREQUAL "LFortran")
     add_compile_definitions(CPRLFORTRAN)
     # There is an issue, some modules require --cpp as a flag in their compilation
@@ -75,4 +83,4 @@ message(STATUS " ******* ${CMAKE_PROJECT_NAME} build options ******* ")
 message(STATUS " Build type = '${CMAKE_BUILD_TYPE}'")
 message(STATUS " Compiler = '${COMPILER}'")
 message(STATUS " Coupling mode = '${COUPLING_MODE}'")
-message(STATUS " ********************************** ")
+message(STATUS " ********************************** ")