From 329484883da800d42bcd0d645350006a06bfb494 Mon Sep 17 00:00:00 2001
From: Harshula Jayasuriya <harshula.jayasuriya@anu.edu.au>
Date: Tue, 25 Feb 2025 23:48:48 +1100
Subject: [PATCH] CMakeLists.txt: use MOM5 C compiler flags

---
 CMakeLists.txt | 17 ++++++++---------
 1 file changed, 8 insertions(+), 9 deletions(-)

diff --git a/CMakeLists.txt b/CMakeLists.txt
index 0f6a160c0..081561bd2 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -117,18 +117,17 @@ elseif(CMAKE_C_COMPILER_ID STREQUAL "Intel")
 
 elseif(CMAKE_C_COMPILER_ID STREQUAL "IntelLLVM")
 
-  # Intel LLVM based C
-  set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -traceback")
-  set(CMAKE_C_FLAGS_RELEASE "-qno-opt-dynamic-align -O2 -debug minimal")
-  set(CMAKE_C_FLAGS_DEBUG "-O0 -g -ftrapuv")
-  set(CMAKE_C_LINK_FLAGS "")
+  # Copied from MOM5/bin/mkmf.template.nci
+  set(CMAKE_C_FLAGS         "${CMAKE_C_FLAGS}")
+  set(CMAKE_C_FLAGS_DEBUG   "-O0 -g -ftrapuv -traceback")
+  set(CMAKE_C_FLAGS_RELEASE "-O2 -debug minimal -xCORE-AVX2")
 
 elseif(CMAKE_C_COMPILER_ID MATCHES "Clang")
 
-  # Clang C
-  set(CMAKE_C_FLAGS_RELEASE     "-O3" )
-  set(CMAKE_C_FLAGS_DEBUG       "-O0 -g" )
-  set(CMAKE_C_LINK_FLAGS        "" )
+  # Copied from MOM5/bin/mkmf.template.nci.gfortran
+  set(CMAKE_C_FLAGS         "${CMAKE_C_FLAGS}")
+  set(CMAKE_C_FLAGS_DEBUG   "-O0 -g")
+  set(CMAKE_C_FLAGS_RELEASE "-O2")
 
 else()
   message(WARNING "C compiler with ID ${CMAKE_C_COMPILER_ID} will be used with CMake default options")