diff --git a/Tests/RunCMake/Swift/RunCMakeTest.cmake b/Tests/RunCMake/Swift/RunCMakeTest.cmake
index 56158e3a32..3711efb1c9 100644
--- a/Tests/RunCMake/Swift/RunCMakeTest.cmake
+++ b/Tests/RunCMake/Swift/RunCMakeTest.cmake
@@ -35,60 +35,62 @@ elseif(RunCMake_GENERATOR STREQUAL Ninja)
     # Test that intermediate static libraries are rebuilt when the public
     # interface of their dependency changes
     block()
-      set(IncrementalSwift_TEST_BINARY_DIR ${RunCMake_BINARY_DIR}/IncrementalSwift-build)
-      set(IncrementalSwift_TEST_NO_CLEAN 1)
-      set(IncrementalSwift_TEST_OUTPUT_MERGE 1)
+      set(RunCMake_TEST_BINARY_DIR ${RunCMake_BINARY_DIR}/IncrementalSwift-build)
       # Since files are modified during test, the files are created in the cmake
       # file into the build directory
       run_cmake(IncrementalSwift)
-      run_cmake_command(IncrementalSwift-first ${CMAKE_COMMAND} --build ${IncrementalSwift_TEST_BINARY_DIR})
+      set(RunCMake_TEST_NO_CLEAN 1)
+      run_cmake_command(IncrementalSwift-first ${CMAKE_COMMAND} --build .)
 
       # Modify public interface of libA requiring rebuild of libB
-      file(WRITE ${IncrementalSwift_TEST_BINARY_DIR}/a.swift
+      file(WRITE ${RunCMake_TEST_BINARY_DIR}/a.swift
         "public func callA() -> Float { return 32.0 }\n")
 
       # Note: We still expect this to fail, but instead of failure at link time,
       # it should fail while re-compiling libB because the function changed
-      run_cmake_command(IncrementalSwift-second ${CMAKE_COMMAND} --build ${IncrementalSwift_TEST_BINARY_DIR} -- -d explain)
+      run_cmake_command(IncrementalSwift-second ${CMAKE_COMMAND} --build . -- -d explain)
     endblock()
 
     block()
-      set(CMP0157-OLD_TEST_BINARY_DIR ${RunCMake_BINARY_DIR}/CMP0157-OLD-build)
-      set(CMP0157-OLD_TEST_NO_CLEAN 1)
-      set(CMP0157-OLD_TEST_OUTPUT_MERGE 1)
-
       run_cmake(CMP0157-NEW)
-      run_cmake(CMP0157-OLD)
-      # -n: dry-run to avoid actually compiling, -v: verbose to capture executed command
-      run_cmake_command(CMP0157-OLD-build ${CMAKE_COMMAND} --build ${CMP0157-OLD_TEST_BINARY_DIR} -- -n -v)
       run_cmake(CMP0157-WARN)
+
+      set(RunCMake_TEST_BINARY_DIR ${RunCMake_BINARY_DIR}/CMP0157-OLD-build)
+      run_cmake(CMP0157-OLD)
+      set(RunCMake_TEST_NO_CLEAN 1)
+      # -n: dry-run to avoid actually compiling, -v: verbose to capture executed command
+      run_cmake_command(CMP0157-OLD-build ${CMAKE_COMMAND} --build . -- -n -v)
     endblock()
 
     block()
-      set(CompileCommands_TEST_BINARY_DIR ${RunCMake_BINARY_DIR}/CompileCommands-build)
+      set(RunCMake_TEST_BINARY_DIR ${RunCMake_BINARY_DIR}/CompileCommands-build)
       run_cmake(CompileCommands)
-      run_cmake_command(CompileCommands-check ${CMAKE_COMMAND} --build ${CompileCommands_TEST_BINARY_DIR})
+      set(RunCMake_TEST_NO_CLEAN 1)
+      run_cmake_command(CompileCommands-check ${CMAKE_COMMAND} --build .)
     endblock()
 
     block()
-      set(ForceResponseFile_TEST_BINARY_DIR ${RunCMake_BINARY_DIR}/ForceResponseFile-build)
+      set(RunCMake_TEST_BINARY_DIR ${RunCMake_BINARY_DIR}/ForceResponseFile-build)
       run_cmake(ForceResponseFile)
+      set(RunCMake_TEST_NO_CLEAN 1)
       # -v: verbose to capture executed commands -n: dry-run to avoid actually compiling
-      run_cmake_command(ForceResponseFile-check ${CMAKE_COMMAND} --build ${ForceResponseFile_TEST_BINARY_DIR} -- -vn)
+      run_cmake_command(ForceResponseFile-check ${CMAKE_COMMAND} --build . -- -vn)
     endblock()
 
     block()
       if(CMAKE_SYSTEM_NAME MATCHES Windows)
-        set(ImportLibraryFlags_TEST_BINARY_DIR ${RunCMake_BINARY_DIR}/SwiftLibraryModuleCommand-build)
+        set(RunCMake_TEST_BINARY_DIR ${RunCMake_BINARY_DIR}/ImportLibraryFlags-build)
         run_cmake(ImportLibraryFlags)
-        run_cmake_command(ImportLibraryFlags-check ${CMAKE_COMMAND} --build ${SwiftLibraryModuleCommand_TEST_BINARY_DIR} -- -n -v)
+        set(RunCMake_TEST_NO_CLEAN 1)
+        run_cmake_command(ImportLibraryFlags-check ${CMAKE_COMMAND} --build . -- -n -v)
       endif()
     endblock()
 
     block()
-      set(SwiftLibraryModuleCommand_TEST_BINARY_DIR ${RunCMake_BINARY_DIR}/SwiftLibraryModuleCommand-build)
+      set(RunCMake_TEST_BINARY_DIR ${RunCMake_BINARY_DIR}/SwiftLibraryModuleCommand-build)
       run_cmake(SwiftLibraryModuleCommand)
-      run_cmake_command(SwiftLibraryModuleCommand-check ${CMAKE_COMMAND} --build ${SwiftLibraryModuleCommand_TEST_BINARY_DIR} -- -n -v)
+      set(RunCMake_TEST_NO_CLEAN 1)
+      run_cmake_command(SwiftLibraryModuleCommand-check ${CMAKE_COMMAND} --build . -- -n -v)
     endblock()
   endif()
 elseif(RunCMake_GENERATOR STREQUAL "Ninja Multi-Config")