diff --git a/swift/integration-tests/.gitignore b/swift/integration-tests/.gitignore
index 9ea4244ad915..b613644a5ae4 100644
--- a/swift/integration-tests/.gitignore
+++ b/swift/integration-tests/.gitignore
@@ -7,3 +7,4 @@ DerivedData/
 .swiftpm/xcode/package.xcworkspace/contents.xcworkspacedata
 *.actual
 db
+*.swiftmodule
diff --git a/swift/integration-tests/posix-only/frontend-invocations/F1.swift b/swift/integration-tests/posix-only/frontend-invocations/F1.swift
new file mode 100644
index 000000000000..e69de29bb2d1
diff --git a/swift/integration-tests/posix-only/frontend-invocations/F2.swift b/swift/integration-tests/posix-only/frontend-invocations/F2.swift
new file mode 100644
index 000000000000..e69de29bb2d1
diff --git a/swift/integration-tests/posix-only/frontend-invocations/Files.expected b/swift/integration-tests/posix-only/frontend-invocations/Files.expected
index 319c1010ab4e..f13e45d89a51 100644
--- a/swift/integration-tests/posix-only/frontend-invocations/Files.expected
+++ b/swift/integration-tests/posix-only/frontend-invocations/Files.expected
@@ -3,4 +3,6 @@
 | C.swift:0:0:0:0 | C.swift |
 | D.swift:0:0:0:0 | D.swift |
 | E.swift:0:0:0:0 | E.swift |
+| F1.swift:0:0:0:0 | F1.swift |
+| F2.swift:0:0:0:0 | F2.swift |
 | file://:0:0:0:0 |  |
diff --git a/swift/integration-tests/posix-only/frontend-invocations/Makefile b/swift/integration-tests/posix-only/frontend-invocations/Makefile
deleted file mode 100644
index d3ddece6b9f4..000000000000
--- a/swift/integration-tests/posix-only/frontend-invocations/Makefile
+++ /dev/null
@@ -1,15 +0,0 @@
-OS=$(shell uname)
-ifeq ($(OS),Darwin)
-SDK=-sdk $(shell xcrun -show-sdk-path)
-FRONTEND=$(shell xcrun -find swift-frontend)
-else
-SDK=""
-FRONTEND=swiftc
-endif
-
-all:
-	$(FRONTEND) -frontend -c A.swift $(SDK)
-	$(FRONTEND) -frontend -c B.swift -o B.o $(SDK)
-	$(FRONTEND) -frontend -c -primary-file C.swift $(SDK)
-	$(FRONTEND) -frontend -c -primary-file D.swift -o D.o $(SDK)
-	$(FRONTEND) -frontend -c -primary-file E.swift Esup.swift -o E.o $(SDK)
diff --git a/swift/integration-tests/posix-only/frontend-invocations/build.sh b/swift/integration-tests/posix-only/frontend-invocations/build.sh
new file mode 100755
index 000000000000..03f1148ca05e
--- /dev/null
+++ b/swift/integration-tests/posix-only/frontend-invocations/build.sh
@@ -0,0 +1,18 @@
+#!/bin/bash
+
+if [[ "$(uname)" == Darwin ]]; then
+  SDK="-sdk $(xcrun -show-sdk-path)"
+  FRONTEND="$(xcrun -find swift-frontend)"
+else
+  SDK=""
+  FRONTEND="swift-frontend"
+fi
+
+$FRONTEND -frontend -c A.swift $SDK
+$FRONTEND -frontend -c B.swift -o B.o $SDK
+$FRONTEND -frontend -c -primary-file C.swift $SDK
+$FRONTEND -frontend -c -primary-file D.swift -o D.o $SDK
+$FRONTEND -frontend -c -primary-file E.swift Esup.swift -o E.o $SDK
+$FRONTEND -frontend -emit-module -primary-file F1.swift F2.swift -module-name F -o F1.swiftmodule $SDK
+$FRONTEND -frontend -emit-module F1.swift -primary-file F2.swift -module-name F -o F2.swiftmodule $SDK
+$FRONTEND -merge-modules F1.swiftmodule F2.swiftmodule -o F.swiftmodule $SDK
diff --git a/swift/integration-tests/posix-only/frontend-invocations/test.py b/swift/integration-tests/posix-only/frontend-invocations/test.py
index b415c024e562..4aec427a4b44 100644
--- a/swift/integration-tests/posix-only/frontend-invocations/test.py
+++ b/swift/integration-tests/posix-only/frontend-invocations/test.py
@@ -1,5 +1,5 @@
 from create_database_utils import *
 
 run_codeql_database_create([
-    'make',
+    './build.sh',
 ], lang='swift')