From 1056ef500d201e35fc1ff5530f842cf69765eff3 Mon Sep 17 00:00:00 2001
From: George Gayno <ggayno@hercules-login-2.hpc.msstate.edu>
Date: Tue, 20 Aug 2024 15:08:59 -0500
Subject: [PATCH] Update main CMakeLists.txt to set 'C' compiler options.

Fixes #879.
---
 CMakeLists.txt | 8 ++++++--
 1 file changed, 6 insertions(+), 2 deletions(-)

diff --git a/CMakeLists.txt b/CMakeLists.txt
index 95dc62e87..4e3d764c6 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -86,10 +86,14 @@ elseif(CMAKE_Fortran_COMPILER_ID MATCHES "^(GNU)$")
   set(CMAKE_Fortran_FLAGS_DEBUG "-O0 -ggdb -Wall -fcheck=all")
 endif()
 
-if(CMAKE_C_COMPILER_ID MATCHES "^(Intel)$")
+if(CMAKE_C_COMPILER_ID MATCHES "^(Intel|IntelLLVM)$")
   set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -g -traceback")
-  set(CMAKE_C_FLAGS_RELEASE "-O2")
   set(CMAKE_C_FLAGS_DEBUG "-O0")
+  if(CMAKE_C_COMPILER_ID MATCHES "^(Intel)$")
+    set(CMAKE_C_FLAGS_RELEASE "-O2")
+  else()
+    set(CMAKE_C_FLAGS_RELEASE "-O1")
+  endif()
 endif()
 
 # Find packages.