diff --git a/packages/dart/build.sh b/packages/dart/build.sh
index d6d94e9ac..f8d470c83 100644
--- a/packages/dart/build.sh
+++ b/packages/dart/build.sh
@@ -28,21 +28,22 @@ termux_step_get_source() {
 	gclient sync -D --force --reset
 }
 
-termux_step_make() {
-	cd sdk
-
-	local DEST_CPU
+termux_step_post_get_source() {
 	if [ $TERMUX_ARCH = "arm" ]; then
-		DEST_CPU="arm"
+		export DEST_CPU="ARM"
 	elif [ $TERMUX_ARCH = "i686" ]; then
-		DEST_CPU="ia32"
+		export DEST_CPU="IA32"
 	elif [ $TERMUX_ARCH = "aarch64" ]; then
-		DEST_CPU="arm64"
+		export DEST_CPU="ARM64"
 	elif [ $TERMUX_ARCH = "x86_64" ]; then
-		DEST_CPU="x64"
+		export DEST_CPU="X64"
 	else
 		termux_error_exit "Unsupported arch '$TERMUX_ARCH'"
 	fi
+}
+
+termux_step_make() {
+	cd sdk
 
 	rm -f ./out/*/args.gn
 	DART_MAKE_PLATFORM_SDK=true python2 ./tools/build.py --mode release --arch=$DEST_CPU --os=android create_sdk
@@ -51,19 +52,6 @@ termux_step_make() {
 termux_step_make_install() {
 	cd sdk
 
-	local DEST_CPU
-	if [ $TERMUX_ARCH = "arm" ]; then
-		DEST_CPU="ARM"
-	elif [ $TERMUX_ARCH = "i686" ]; then
-		DEST_CPU="IA32"
-	elif [ $TERMUX_ARCH = "aarch64" ]; then
-		DEST_CPU="ARM64"
-	elif [ $TERMUX_ARCH = "x86_64" ]; then
-		DEST_CPU="X64"
-	else
-		termux_error_exit "Unsupported arch '$TERMUX_ARCH'"
-	fi
-
 	chmod +x ./out/ReleaseAndroid${DEST_CPU}/dart-sdk/bin/*
 	cp -r ./out/ReleaseAndroid${DEST_CPU}/dart-sdk ${TERMUX_PREFIX}/lib