diff --git a/compile_macos.sh b/compile_macos.sh
index 45bb2d1d2..d86d75926 100644
--- a/compile_macos.sh
+++ b/compile_macos.sh
@@ -50,15 +50,16 @@ if test "$1" = "d"; then
   echo "configuring for 64 bit debug"
   echo
 # You may add  --enable-adms to the following command for adding adms generated devices
-# builtin readline not compatible (Big Sur), readline via Homebrew required (in /usr/local/opt)
-  ../configure --with-x --enable-xspice --enable-cider --with-readline=/usr/local/opt/readline --enable-openmp CFLAGS="-m64 -O0 -g -Wall -I/opt/X11/include/freetype2 -I/usr/local/opt/readline/include" LDFLAGS="-m64 -lomp -g -L/usr/local/opt/readline/lib"
+# Builtin readline is not compatible (Big Sur), readline via Homebrew required (in /usr/local/opt)
+# Standard clang does not support OpenMP
+  ../configure --with-x --enable-xspice --enable-cider --with-readline=/usr/local/opt/readline CFLAGS="-m64 -O0 -g -Wall -I/opt/X11/include/freetype2 -I/usr/local/opt/readline/include" LDFLAGS="-m64 -g -L/usr/local/opt/readline/lib"
 else
    cd release
    if [ $? -ne 0 ]; then  echo "cd release failed"; exit 1 ; fi
   echo "configuring for 64 bit release"
   echo
 # You may add  --enable-adms to the following command for adding adms generated devices
-  ../configure --with-x --enable-xspice --enable-cider --with-readline=/usr/local/opt/readline --enable-openmp --disable-debug CFLAGS="-m64 -O2 -I/opt/X11/include/freetype2 -I/usr/local/opt/readline/include" LDFLAGS="-m64 -lomp -L/usr/local/opt/readline/lib"
+  ../configure --with-x --enable-xspice --enable-cider --with-readline=/usr/local/opt/readline --disable-debug CFLAGS="-m64 -O2 -I/opt/X11/include/freetype2 -I/usr/local/opt/readline/include" LDFLAGS="-m64 -L/usr/local/opt/readline/lib"
 fi
 if [ $? -ne 0 ]; then  echo "../configure failed"; exit 1 ; fi