From 1980e47192eaea554fe521c7919fbf28684b1b4c Mon Sep 17 00:00:00 2001
From: Ben Boeckel <ben.boeckel@kitware.com>
Date: Wed, 17 Sep 2025 14:23:15 -0400
Subject: [PATCH] Tests/IntermediateDirStrategy: test install paths when using
 SHORT

See: #27233
---
 .../IntermediateDirStrategy/CMakeLists.txt    |  4 ++++
 .../IntermediateDirStrategy/Inspect.cmake     | 10 +++++++++
 .../RunCMakeTest.cmake                        | 22 +++++++++++++++++++
 ...ectDoesntChangeInstall-install-check.cmake | 11 ++++++++++
 .../ShortObjectDoesntChangeInstall.cmake      |  5 +++++
 .../IntermediateDirStrategy/subdir/obj.c      |  4 ++++
 6 files changed, 56 insertions(+)
 create mode 100644 Tests/RunCMake/IntermediateDirStrategy/Inspect.cmake
 create mode 100644 Tests/RunCMake/IntermediateDirStrategy/ShortObjectDoesntChangeInstall-install-check.cmake
 create mode 100644 Tests/RunCMake/IntermediateDirStrategy/ShortObjectDoesntChangeInstall.cmake
 create mode 100644 Tests/RunCMake/IntermediateDirStrategy/subdir/obj.c

diff --git a/Tests/RunCMake/IntermediateDirStrategy/CMakeLists.txt b/Tests/RunCMake/IntermediateDirStrategy/CMakeLists.txt
index 5d1e2985e2..dd1af9492d 100644
--- a/Tests/RunCMake/IntermediateDirStrategy/CMakeLists.txt
+++ b/Tests/RunCMake/IntermediateDirStrategy/CMakeLists.txt
@@ -1,2 +1,6 @@
 cmake_minimum_required(VERSION 3.10)
 project(${RunCMake_TEST} NONE)
+
+if (NOT RunCMake_TEST MATCHES "IntDirStrategy")
+  include(${RunCMake_TEST}.cmake)
+endif ()
diff --git a/Tests/RunCMake/IntermediateDirStrategy/Inspect.cmake b/Tests/RunCMake/IntermediateDirStrategy/Inspect.cmake
new file mode 100644
index 0000000000..ec74ed8e36
--- /dev/null
+++ b/Tests/RunCMake/IntermediateDirStrategy/Inspect.cmake
@@ -0,0 +1,10 @@
+enable_language(C)
+
+set(info "")
+
+# Forward information about the C++ compile features.
+string(APPEND info "\
+set(CMAKE_C_OUTPUT_EXTENSION \"${CMAKE_C_OUTPUT_EXTENSION}\")
+")
+
+file(WRITE "${CMAKE_CURRENT_BINARY_DIR}/info.cmake" "${info}")
diff --git a/Tests/RunCMake/IntermediateDirStrategy/RunCMakeTest.cmake b/Tests/RunCMake/IntermediateDirStrategy/RunCMakeTest.cmake
index b719dfd0dd..eb2a5f5c03 100644
--- a/Tests/RunCMake/IntermediateDirStrategy/RunCMakeTest.cmake
+++ b/Tests/RunCMake/IntermediateDirStrategy/RunCMakeTest.cmake
@@ -27,3 +27,25 @@ foreach (kind IN ITEMS Object Autogen)
     run_cmake_intdir_strategy(IntDirStrategyEnv ${strategy} ${kind})
   endforeach ()
 endforeach ()
+
+# The following tests perform installation of `OBJECT` libraries which does not
+# work with multi-arch compilation under Xcode.
+if (RunCMake_GENERATOR STREQUAL "Xcode" AND "$ENV{CMAKE_OSX_ARCHITECTURES}" MATCHES "[;$]")
+  return ()
+endif ()
+
+run_cmake(Inspect)
+include("${RunCMake_BINARY_DIR}/Inspect-build/info.cmake")
+
+function(run_install_test case)
+  set(RunCMake_TEST_BINARY_DIR ${RunCMake_BINARY_DIR}/${case}-build)
+  set(RunCMake_TEST_OPTIONS -DCMAKE_BUILD_TYPE:STRING=Debug "-DCMAKE_INSTALL_PREFIX:PATH=${RunCMake_TEST_BINARY_DIR}/fake_install")
+  run_cmake(${case})
+  set(RunCMake_TEST_NO_CLEAN 1)
+  run_cmake_command(${case}-build ${CMAKE_COMMAND} --build . --config Debug)
+  run_cmake_command(${case}-install ${CMAKE_COMMAND} --install . --config Debug --prefix "${RunCMake_TEST_BINARY_DIR}/real_install")
+endfunction()
+
+if (RunCMake_GENERATOR MATCHES "(Ninja|Makefiles|Visual Studio)")
+  run_install_test(ShortObjectDoesntChangeInstall)
+endif ()
diff --git a/Tests/RunCMake/IntermediateDirStrategy/ShortObjectDoesntChangeInstall-install-check.cmake b/Tests/RunCMake/IntermediateDirStrategy/ShortObjectDoesntChangeInstall-install-check.cmake
new file mode 100644
index 0000000000..8fb33086f3
--- /dev/null
+++ b/Tests/RunCMake/IntermediateDirStrategy/ShortObjectDoesntChangeInstall-install-check.cmake
@@ -0,0 +1,11 @@
+set(subdir "subdir/")
+set(ext_suffix ".c")
+if (RunCMake_GENERATOR MATCHES "(Visual Studio|Xcode)")
+  set(ext_suffix "")
+  set(subdir "")
+endif ()
+set(path "${RunCMake_TEST_BINARY_DIR}/real_install/lib/objlib/objects-Debug/objlib/${subdir}obj${ext_suffix}${CMAKE_C_OUTPUT_EXTENSION}")
+if (NOT EXISTS "${path}")
+  list(APPEND RunCMake_TEST_FAILED
+    "Expected install object '${path}' does not exist")
+endif ()
diff --git a/Tests/RunCMake/IntermediateDirStrategy/ShortObjectDoesntChangeInstall.cmake b/Tests/RunCMake/IntermediateDirStrategy/ShortObjectDoesntChangeInstall.cmake
new file mode 100644
index 0000000000..6fcce47b8e
--- /dev/null
+++ b/Tests/RunCMake/IntermediateDirStrategy/ShortObjectDoesntChangeInstall.cmake
@@ -0,0 +1,5 @@
+set(CMAKE_INTERMEDIATE_DIR_STRATEGY SHORT CACHE STRING "" FORCE)
+enable_language(C)
+
+add_library(objlib OBJECT subdir/obj.c)
+install(TARGETS objlib OBJECTS DESTINATION lib/objlib)
diff --git a/Tests/RunCMake/IntermediateDirStrategy/subdir/obj.c b/Tests/RunCMake/IntermediateDirStrategy/subdir/obj.c
new file mode 100644
index 0000000000..a482372785
--- /dev/null
+++ b/Tests/RunCMake/IntermediateDirStrategy/subdir/obj.c
@@ -0,0 +1,4 @@
+int f(int a)
+{
+  return a;
+}