From bde9d4ad014bd93181281fdfc2262d84ac9fd487 Mon Sep 17 00:00:00 2001
From: Ben Boeckel <ben.boeckel@kitware.com>
Date: Tue, 31 Jan 2023 22:46:25 -0500
Subject: cmCommonTargetGenerator: also consider synthetic targets

---
 Source/cmCommonTargetGenerator.cxx | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/Source/cmCommonTargetGenerator.cxx b/Source/cmCommonTargetGenerator.cxx
index a63c162..1705763 100644
--- a/Source/cmCommonTargetGenerator.cxx
+++ b/Source/cmCommonTargetGenerator.cxx
@@ -176,7 +176,9 @@ std::vector<std::string> cmCommonTargetGenerator::GetLinkedTargetDirectories(
           // We can ignore the INTERFACE_LIBRARY items because
           // Target->GetLinkInformation already processed their
           // link interface and they don't have any output themselves.
-          && linkee->GetType() != cmStateEnums::INTERFACE_LIBRARY &&
+          && (linkee->GetType() != cmStateEnums::INTERFACE_LIBRARY
+              // Synthesized targets may have relevant rules.
+              || linkee->IsSynthetic()) &&
           ((lang == "CXX"_s && linkee->HaveCxx20ModuleSources()) ||
            (lang == "Fortran"_s && linkee->HaveFortranSources(config))) &&
           emitted.insert(linkee).second) {
-- 
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