diff --git a/bundles/org.eclipse.swt/Eclipse SWT PI/cocoa/library/build.sh b/bundles/org.eclipse.swt/Eclipse SWT PI/cocoa/library/build.sh
index ba8de7a..2b3114e 100644
--- a/bundles/org.eclipse.swt/Eclipse SWT PI/cocoa/library/build.sh
+++ b/bundles/org.eclipse.swt/Eclipse SWT PI/cocoa/library/build.sh
@@ -21,14 +21,21 @@
 	export CFLAGS_JAVA_VM="-I $(/usr/libexec/java_home)/include -I $(/usr/libexec/java_home)/include/darwin"
 fi
 
-export ARCHS="-arch x86_64 -arch arm64"
-if [ "x${OUTPUT_DIR}" = "x" ]; then
-	export OUTPUT_DIR=../../../org.eclipse.swt.cocoa.macosx.x86_64
-fi
-if [ -d "chromium_subp/cef_macosx" ]; then
-	export CHROMIUM_HEADERS=./chromium_subp/cef_macosx
-else
-	export CHROMIUM_HEADERS=$CHROMIUM_OUTPUT_DIR/../../../../eclipse.platform.swt/bundles/org.eclipse.swt.browser.chromium/common/rust-library/chromium_subp/cef_macosx
+if [ "x${MODEL}" = "xx86_64" ]; then
+	export ARCHS="-arch x86_64"
+	if [ "x${OUTPUT_DIR}" = "x" ]; then
+		export OUTPUT_DIR=../../../org.eclipse.swt.cocoa.macosx.x86_64
+	fi
+	if [ -d "chromium_subp/cef_macosx" ]; then
+		export CHROMIUM_HEADERS=./chromium_subp/cef_macosx
+	else
+		export CHROMIUM_HEADERS=$CHROMIUM_OUTPUT_DIR/../../../../eclipse.platform.swt/bundles/org.eclipse.swt.browser.chromium/common/rust-library/chromium_subp/cef_macosx
+	fi
+elif [ "x${MODEL}" = "xarm64" ]; then
+	export ARCHS="-arch arm64"
+	if [ "x${OUTPUT_DIR}" = "x" ]; then
+		export OUTPUT_DIR=../../../org.eclipse.swt.cocoa.macosx.arm64
+	fi
 fi
 
 export MACOSX_DEPLOYMENT_TARGET=10.10