Disable TWO_PASS_IPO if NVHPC Version < 23.11 (#686)

Co-authored-by: Spencer Bryngelson <[email protected]>

Author: okBrian

CMakeLists.txt

@@ -69,8 +69,8 @@ elseif ((CMAKE_Fortran_COMPILER_ID STREQUAL "NVHPC") OR (CMAKE_Fortran_COMPILER_
         message(FATAL_ERROR "ERROR: When using NVHPC, v21.7 or newer is required to build MFC.\n${__err_msg}")
     endif()
 
-    if ((CMAKE_Fortran_COMPILER_VERSION VERSION_LESS 23.11) AND (CMAKE_BUILD_TYPE STREQUAL "Debug") AND MFC_OpenACC)
-        message(FATAL_ERROR "ERROR: When using NVHPC, MFC with Debug and GPU options requires NVHPC v23.11 or newer.\n${__err_msg}")
+    if ((CMAKE_Fortran_COMPILER_VERSION VERSION_LESS 24.5) AND (CMAKE_BUILD_TYPE STREQUAL "Debug") AND MFC_OpenACC)
+        message(FATAL_ERROR "ERROR: When using NVHPC, MFC with Debug and GPU options requires NVHPC v24.5 or newer.\n${__err_msg}")
     endif()
 elseif (CMAKE_Fortran_COMPILER_ID STREQUAL "AppleClang" OR CMAKE_C_COMPILER_ID STREQUAL "AppleClang")
     message(FATAL_ERROR "ERROR: MFC does not support the Apple Clang compilers. Please consult the documentation.\n${__err_msg}")
@@ -216,7 +216,9 @@ if (CMAKE_BUILD_TYPE STREQUAL "Release")
     # Enable LTO/IPO if supported
     if (CMAKE_Fortran_COMPILER_ID STREQUAL "NVHPC")
         if (MFC_Unified)
-            message(STATUS "IPO is not available with NVHPC using Unified Memory")
+            message(STATUS "LTO/IPO is not available with NVHPC using Unified Memory")
+        elseif(CMAKE_Fortran_COMPILER_VERSION VERSION_LESS "23.11")
+            message(STATUS "LTO/IPO is not supported in NVHPC Version < 23.11. Use a newer version of NVHPC for best performance.")
         else()
             message(STATUS "Performing IPO using -Mextract followed by -Minline")
             set(NVHPC_USE_TWO_PASS_IPO TRUE)