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-rw-r--r--Source/cmLocalGenerator.cxx1
1 files changed, 1 insertions, 0 deletions
diff --git a/Source/cmLocalGenerator.cxx b/Source/cmLocalGenerator.cxx
index a3003bd..168cd41 100644
--- a/Source/cmLocalGenerator.cxx
+++ b/Source/cmLocalGenerator.cxx
@@ -3196,6 +3196,7 @@ void cmLocalGenerator::AddUnityBuild(cmGeneratorTarget* target)
target->AddSource(file.Path, true);
unity->SetProperty("SKIP_UNITY_BUILD_INCLUSION", "ON");
unity->SetProperty("UNITY_SOURCE_FILE", file.Path);
+ unity->SetProperty("CXX_SCAN_FOR_MODULES", "0");
if (file.PerConfig) {
unity->SetProperty("COMPILE_DEFINITIONS",
"CMAKE_UNITY_CONFIG_$<UPPER_CASE:$<CONFIG>>");