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-rw-r--r--Tests/RunCMake/FetchContent/RunCMakeTest.cmake4
1 files changed, 4 insertions, 0 deletions
diff --git a/Tests/RunCMake/FetchContent/RunCMakeTest.cmake b/Tests/RunCMake/FetchContent/RunCMakeTest.cmake
index 5e2e5e1..f3ed3e2 100644
--- a/Tests/RunCMake/FetchContent/RunCMakeTest.cmake
+++ b/Tests/RunCMake/FetchContent/RunCMakeTest.cmake
@@ -16,6 +16,10 @@ run_cmake(MakeAvailable)
run_cmake(MakeAvailableTwice)
run_cmake(MakeAvailableUndeclared)
+set(RunCMake_TEST_OUTPUT_MERGE 1)
+run_cmake(PreserveEmptyArgs)
+set(RunCMake_TEST_OUTPUT_MERGE 0)
+
# We need to pass through CMAKE_GENERATOR and CMAKE_MAKE_PROGRAM
# to ensure the test can run on machines where the build tool
# isn't on the PATH. Some build slaves explicitly test with such