Tests: Add cases for usage requirements of linked object libs

Add tests to cover transitive usage requirements on installation and
export of targets that link to object libraries.

Issue: #14778

6 files changed, 48 insertions, 7 deletions

diff --git a/Tests/ExportImport/Export/CMakeLists.txt b/Tests/ExportImport/Export/CMakeLists.txt
index 4f663f6..cbc8c6b 100644
--- a/Tests/ExportImport/Export/CMakeLists.txt
+++ b/Tests/ExportImport/Export/CMakeLists.txt
@@ -88,7 +88,17 @@ else()
   set(maybe_OBJECTS_DESTINATION "")
 endif()
 
-add_library(testLib9Obj OBJECT testLib9Obj.c)
+cmake_policy(PUSH)
+cmake_policy(SET CMP0022 NEW)
+add_library(testLib9ObjPub OBJECT testLib9ObjPub.c)
+target_compile_definitions(testLib9ObjPub INTERFACE testLib9ObjPub_USED)
+add_library(testLib9ObjPriv OBJECT testLib9ObjPriv.c)
+target_compile_definitions(testLib9ObjPriv INTERFACE testLib9ObjPriv_USED)
+add_library(testLib9ObjIface OBJECT testLib9ObjIface.c)
+target_compile_definitions(testLib9ObjIface INTERFACE testLib9ObjIface_USED)
+add_library(testLib9 STATIC testLib9.c)
+target_link_libraries(testLib9 INTERFACE testLib9ObjIface PUBLIC testLib9ObjPub PRIVATE testLib9ObjPriv)
+cmake_policy(POP)
 
 # Test using the target_link_libraries command to set the
 # LINK_INTERFACE_LIBRARIES* properties.  We construct two libraries
@@ -486,6 +496,7 @@ install(
   testExe1 testLib1 testLib2 testExe2 testLib3 testLib4 testExe3 testExe4
   testExe2lib testLib4lib testLib4libdbg testLib4libopt
   testLib6 testLib7 testLib8
+  testLib9
   testLibCycleA testLibCycleB
   testLibNoSONAME
   cmp0022NEW cmp0022OLD
@@ -500,7 +511,7 @@ install(
   )
 install(
   TARGETS
-  testLib9Obj
+  testLib9ObjPub testLib9ObjPriv testLib9ObjIface
   EXPORT exp
   )
 if (APPLE)
@@ -553,7 +564,7 @@ export(TARGETS testExe1 testLib1 testLib2 testLib3
   )
 export(TARGETS testExe2 testLib4 testLib5 testLib6 testLib7 testExe3 testExe4 testExe2lib
   testLib8
-  testLib9Obj
+  testLib9 testLib9ObjPub testLib9ObjPriv testLib9ObjIface
   testLib4lib testLib4libdbg testLib4libopt
   testLibCycleA testLibCycleB
   testLibNoSONAME
diff --git a/Tests/ExportImport/Export/testLib9.c b/Tests/ExportImport/Export/testLib9.c
new file mode 100644
index 0000000..fe8610b
--- /dev/null
+++ b/Tests/ExportImport/Export/testLib9.c
@@ -0,0 +1,15 @@
+#ifndef testLib9ObjPub_USED
+#error "testLib9ObjPub_USED not defined!"
+#endif
+#ifndef testLib9ObjPriv_USED
+#error "testLib9ObjPriv_USED not defined!"
+#endif
+#ifdef testLib9ObjIface_USED
+#error "testLib9ObjIface_USED defined but should not be!"
+#endif
+int testLib9ObjPub(void);
+int testLib9ObjPriv(void);
+int testLib9(void)
+{
+  return (testLib9ObjPub() + testLib9ObjPriv());
+}
diff --git a/Tests/ExportImport/Export/testLib9Obj.c b/Tests/ExportImport/Export/testLib9Obj.c
deleted file mode 100644
index 6a13e48..0000000
--- a/Tests/ExportImport/Export/testLib9Obj.c
+++ /dev/null
@@ -1,4 +0,0 @@
-int testLib9Obj(void)
-{
-  return 0;
-}
diff --git a/Tests/ExportImport/Export/testLib9ObjIface.c b/Tests/ExportImport/Export/testLib9ObjIface.c
new file mode 100644
index 0000000..e75440a
--- /dev/null
+++ b/Tests/ExportImport/Export/testLib9ObjIface.c
@@ -0,0 +1,11 @@
+/* Duplicate symbols from other sources to verify that this source
+   is not included when the object library is used.  */
+int testLib9ObjMissing(void);
+int testLib9ObjPub(void)
+{
+  return testLib9ObjMissing();
+}
+int testLib9ObjPriv(void)
+{
+  return testLib9ObjMissing();
+}
diff --git a/Tests/ExportImport/Export/testLib9ObjPriv.c b/Tests/ExportImport/Export/testLib9ObjPriv.c
new file mode 100644
index 0000000..6fa63cc
--- /dev/null
+++ b/Tests/ExportImport/Export/testLib9ObjPriv.c
@@ -0,0 +1,4 @@
+int testLib9ObjPriv(void)
+{
+  return 0;
+}
diff --git a/Tests/ExportImport/Export/testLib9ObjPub.c b/Tests/ExportImport/Export/testLib9ObjPub.c
new file mode 100644
index 0000000..66e2624
--- /dev/null
+++ b/Tests/ExportImport/Export/testLib9ObjPub.c
@@ -0,0 +1,4 @@
+int testLib9ObjPub(void)
+{
+  return 0;
+}