From 29c7546a6150b951d5d8e3819ec937dd1a9ad7bc Mon Sep 17 00:00:00 2001
From: Kyle Edwards <kyle.edwards@kitware.com>
Date: Wed, 13 Jul 2022 10:22:26 -0400
Subject: cmGlobalGenerator: Only compute build files for all targets

If we're creating generation objects for imported targets only, we
don't need the export sets. Only compute build file generators
if generating for all targets.

Fixes: #23709
---
 Source/cmGlobalGenerator.cxx                 | 4 +++-
 Tests/RunCMake/export/RunCMakeTest.cmake     | 1 +
 Tests/RunCMake/export/TryCompileExport.cmake | 9 +++++++++
 3 files changed, 13 insertions(+), 1 deletion(-)
 create mode 100644 Tests/RunCMake/export/TryCompileExport.cmake

diff --git a/Source/cmGlobalGenerator.cxx b/Source/cmGlobalGenerator.cxx
index 156ecce..c75198d 100644
--- a/Source/cmGlobalGenerator.cxx
+++ b/Source/cmGlobalGenerator.cxx
@@ -1361,7 +1361,9 @@ void cmGlobalGenerator::CreateGenerationObjects(TargetTypes targetTypes)
     this->CheckTargetProperties();
   }
   this->CreateGeneratorTargets(targetTypes);
-  this->ComputeBuildFileGenerators();
+  if (targetTypes == TargetTypes::AllTargets) {
+    this->ComputeBuildFileGenerators();
+  }
 }
 
 void cmGlobalGenerator::CreateImportedGenerationObjects(
diff --git a/Tests/RunCMake/export/RunCMakeTest.cmake b/Tests/RunCMake/export/RunCMakeTest.cmake
index 0e6020f..ee00b27 100644
--- a/Tests/RunCMake/export/RunCMakeTest.cmake
+++ b/Tests/RunCMake/export/RunCMakeTest.cmake
@@ -18,3 +18,4 @@ run_cmake(DependOnDoubleExport)
 run_cmake(UnknownExport)
 run_cmake(NamelinkOnlyExport)
 run_cmake(SeparateNamelinkExport)
+run_cmake(TryCompileExport)
diff --git a/Tests/RunCMake/export/TryCompileExport.cmake b/Tests/RunCMake/export/TryCompileExport.cmake
new file mode 100644
index 0000000..5ad7c6e
--- /dev/null
+++ b/Tests/RunCMake/export/TryCompileExport.cmake
@@ -0,0 +1,9 @@
+enable_language(CXX)
+
+add_library(interface INTERFACE)
+install(TARGETS interface EXPORT export)
+export(EXPORT export)
+
+add_library(imported IMPORTED INTERFACE)
+
+try_compile(tc "${CMAKE_CURRENT_BINARY_DIR}/tc" "${CMAKE_CURRENT_SOURCE_DIR}/empty.cpp" LINK_LIBRARIES imported)
-- 
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