Xcode: Add tests for OBJECT library per target OSX_ARCHITECTURES

Added test to cover handling of when `CMAKE_OSX_ARCHITECTURES` differs from
OBJECT library target's `OSX_ARCHITECTURES`:

TargetOverrideSingleArch:
- When `CMAKE_OSX_ARCHITECTURES` is set to multiple archs,
- But OBJECT library's `OSX_ARCHITECTURES` is set to single
- Assert that OBJECT library target "`HasKnownObjectFileLocation`" and is
  installable

TargetOverrideMultiArch:
- When `CMAKE_OSX_ARCHITECTURES` is set to single arch,
- But OBJECT library's `OSX_ARCHITECTURES` is set to multiple
- Assert that OBJECT library target does not "`HasKnownObjectFileLocation`"
  and hence not installable

Tests/RunCMake/CMakeLists.txt

@@ -352,6 +352,9 @@ if(MSVC)
   add_RunCMake_test(MSVCRuntimeTypeInfo)
   add_RunCMake_test(MSVCWarningFlags)
 endif()
+if(XCODE_VERSION)
+  set(ObjectLibrary_ARGS -DXCODE_VERSION=${XCODE_VERSION})
+endif()
 add_RunCMake_test(ObjectLibrary)
 add_RunCMake_test(ParseImplicitIncludeInfo)
 add_RunCMake_test(ParseImplicitLinkInfo)

Tests/RunCMake/ObjectLibrary/RunCMakeTest.cmake

@@ -8,12 +8,21 @@ run_cmake(BadObjSource2)
 if(RunCMake_GENERATOR STREQUAL "Xcode" AND "$ENV{CMAKE_OSX_ARCHITECTURES}" MATCHES "[;$]")
   run_cmake(ImportMultiArch)
   run_cmake(InstallNotSupported)
+
+  set(osx_archs $ENV{CMAKE_OSX_ARCHITECTURES})
+  list(GET osx_archs 0 osx_arch)
+  run_cmake_with_options(TargetOverrideSingleArch -Dosx_arch=${osx_arch})
 else()
   run_cmake(Import)
   run_cmake(Install)
   run_cmake(InstallLinkedObj1)
   run_cmake(InstallLinkedObj2)
+
+  if(RunCMake_GENERATOR STREQUAL "Xcode" AND XCODE_VERSION VERSION_GREATER_EQUAL 13)
+    run_cmake(TargetOverrideMultiArch)
+  endif()
 endif()
+
 run_cmake(Export)
 
 function (run_object_lib_build name)

Tests/RunCMake/ObjectLibrary/TargetOverrideMultiArch-result.txt

@@ -0,0 +1 @@
+1

Tests/RunCMake/ObjectLibrary/TargetOverrideMultiArch-stderr.txt

@@ -0,0 +1,5 @@
+CMake Error at TargetOverrideMultiArch.cmake:[0-9]+ \(install\):
+  install TARGETS given OBJECT library "A" whose objects may not be installed
+  under Xcode with multiple architectures.
+Call Stack \(most recent call first\):
+  CMakeLists.txt:3 \(include\)

Tests/RunCMake/ObjectLibrary/TargetOverrideMultiArch.cmake

@@ -0,0 +1,3 @@
+add_library(A OBJECT a.c)
+set_target_properties(A PROPERTIES OSX_ARCHITECTURES "x86_64;arm64")
+install(TARGETS A DESTINATION lib)

Tests/RunCMake/ObjectLibrary/TargetOverrideSingleArch.cmake

@@ -0,0 +1,3 @@
+add_library(A OBJECT a.c)
+set_target_properties(A PROPERTIES OSX_ARCHITECTURES ${osx_arch})
+install(TARGETS A DESTINATION lib)