AIX: Propagate AIX_SHARED_LIBRARY_ARCHIVE through exports

Teach `export()` and `install(EXPORT)` to record this setting on the
imported targets they generate.  Make this property's non-presence
authoritative on imported targets since they represent what was built
elsewhere.

Help/prop_tgt/AIX_SHARED_LIBRARY_ARCHIVE.rst

@@ -16,5 +16,7 @@ the :prop_tgt:`SOVERSION` target property, if set, and otherwise from
 the :prop_tgt:`VERSION` target property, if set.
 
 This property defaults to :variable:`CMAKE_AIX_SHARED_LIBRARY_ARCHIVE`
-if that variable is set when a ``SHARED`` library target is created
-by :command:`add_library`.
+if that variable is set when a non-imported ``SHARED`` library target
+is created by :command:`add_library`.  Imported targets must explicitly
+enable :prop_tgt:`!AIX_SHARED_LIBRARY_ARCHIVE` if they import an AIX
+shared library archive.

Help/variable/CMAKE_AIX_SHARED_LIBRARY_ARCHIVE.rst

@@ -6,5 +6,5 @@ CMAKE_AIX_SHARED_LIBRARY_ARCHIVE
 On AIX, enable creation of shared library archives.
 
 This variable initializes the :prop_tgt:`AIX_SHARED_LIBRARY_ARCHIVE`
-target property on ``SHARED`` library targets as they are created
-by :command:`add_library`.  See that target property for details.
+target property on non-imported ``SHARED`` library targets as they are
+created by :command:`add_library`.  See that target property for details.

Source/cmExportCMakeConfigGenerator.cxx

@@ -334,6 +334,12 @@ void cmExportCMakeConfigGenerator::GenerateImportTargetCode(
     os << "set_property(TARGET " << targetName << " PROPERTY BUNDLE 1)\n";
   }
 
+  // Mark the imported library if it is an AIX shared library archive.
+  if (target->IsArchivedAIXSharedLibrary()) {
+    os << "set_property(TARGET " << targetName
+       << " PROPERTY AIX_SHARED_LIBRARY_ARCHIVE 1)\n";
+  }
+
   // generate DEPRECATION
   if (target->IsDeprecated()) {
     os << "set_property(TARGET " << targetName << " PROPERTY DEPRECATION "

Source/cmInstallImportedRuntimeArtifactsGenerator.cxx

@@ -107,11 +107,13 @@ void cmInstallImportedRuntimeArtifactsGenerator::GenerateScriptForConfig(
         }
       } else {
         std::vector<std::string> files{ location };
-        auto soName = this->Target->GetSOName(config);
-        auto soNameFile =
-          cmStrCat(this->Target->GetDirectory(config), '/', soName);
-        if (!soName.empty() && soNameFile != location) {
-          files.push_back(soNameFile);
+        if (!this->Target->IsArchivedAIXSharedLibrary()) {
+          auto soName = this->Target->GetSOName(config);
+          auto soNameFile =
+            cmStrCat(this->Target->GetDirectory(config), '/', soName);
+          if (!soName.empty() && soNameFile != location) {
+            files.push_back(soNameFile);
+          }
         }
         this->AddInstallRule(os, this->GetDestination(config),
                              cmInstallType_SHARED_LIBRARY, files,

Source/cmTarget.cxx

@@ -1087,6 +1087,11 @@ cmTarget::cmTarget(std::string const& name, cmStateEnums::TargetType type,
       }
     }
 
+    // Imported targets must set AIX_SHARED_LIBRARY_ARCHIVE explicitly.
+    if (this->IsImported() && property == "AIX_SHARED_LIBRARY_ARCHIVE"_s) {
+      return;
+    }
+
     // Replace everything after "CMAKE_"
     defKey.replace(defKey.begin() + 6, defKey.end(), property);
     if (cmValue value = mf->GetDefinition(defKey)) {

Tests/ExportImport/Export/CMakeLists.txt

@@ -5,6 +5,8 @@ if(POLICY CMP0129)
 endif()
 project(Export C CXX)
 
+set(CMAKE_AIX_SHARED_LIBRARY_ARCHIVE 1)
+
 find_package(Foo REQUIRED CONFIG NO_DEFAULT_PATH)
 
 # Pretend that RelWithDebInfo should link to debug libraries to test
@@ -482,8 +484,8 @@ add_library(testMod1 MODULE empty.cpp)
 add_library(testMod2 MODULE empty.cpp)
 set_property(TARGET testMod2 PROPERTY BUNDLE 1)
 
-add_library(testSharedLibArchiveAIX SHARED testSharedLibArchiveAIX.c)
-set_property(TARGET testSharedLibArchiveAIX PROPERTY AIX_SHARED_LIBRARY_ARCHIVE 1)
+add_library(testSharedObjectAIX SHARED testSharedObjectAIX.c)
+set_property(TARGET testSharedObjectAIX PROPERTY AIX_SHARED_LIBRARY_ARCHIVE 0)
 
 install(TARGETS testLibRequired
         EXPORT RequiredExp DESTINATION lib
@@ -625,7 +627,7 @@ install(
   systemlib
   testInterfaceIncludeUser
   testInterfaceIncludeUser2
-  testSharedLibArchiveAIX
+  testSharedObjectAIX
   EXPORT exp
   RUNTIME DESTINATION $<1:bin>$<0:/wrong>
   LIBRARY DESTINATION $<1:lib>$<0:/wrong> NAMELINK_SKIP
@@ -703,7 +705,7 @@ export(TARGETS testExe2 testLib4 testLib5 testLib6 testLib7 testExe3 testExe4 te
   testExeWithPluginHelper testExePluginHelperObj
   testMod1 testMod2
   testLibPerConfigDest
-  testSharedLibArchiveAIX
+  testSharedObjectAIX
   NAMESPACE bld_
   APPEND FILE ExportBuildTree.cmake
   )

Tests/ExportImport/Export/testSharedObjectAIX.c

@@ -4,7 +4,7 @@
 #  define EXPORT
 #endif
 
-EXPORT int testSharedLibArchiveAIX(void)
+EXPORT int testSharedObjectAIX(void)
 {
   return 0;
 }

Tests/ExportImport/Import/A/CMakeLists.txt

@@ -68,7 +68,7 @@ target_link_libraries(imp_testExe1
   exp_testLib7
   exp_testLibCycleA
   exp_testLibPerConfigDest
-  exp_testSharedLibArchiveAIX
+  exp_testSharedObjectAIX
   exp_testStaticLibWithPlugin
   )
 
@@ -124,7 +124,7 @@ target_link_libraries(imp_testExe1b
   bld_testLib7
   bld_testLibCycleA
   bld_testLibPerConfigDest
-  bld_testSharedLibArchiveAIX
+  bld_testSharedObjectAIX
   bld_testStaticLibWithPlugin
   )
 

Tests/ExportImport/Import/A/imp_testExe1.c

@@ -11,7 +11,7 @@ extern int testLib7(void);
 extern int testLibCycleA1(void);
 extern int testLibPerConfigDest(void);
 extern int testStaticLibPlugin(void);
-extern int testSharedLibArchiveAIX(void);
+extern int testSharedObjectAIX(void);
 
 /* Switch a symbol between debug and optimized builds to make sure the
    proper library is found from the testLib4 link interface.  */
@@ -27,6 +27,6 @@ int main(void)
   return (testLib2() + generated_by_testExe1() + testLib3() + testLib4() +
           testLib5() + testLib6() + testLib7() + testLibCycleA1() +
           testLibPerConfigDest() + testStaticLibPlugin() +
-          testSharedLibArchiveAIX() + generated_by_testExe3() +
+          testSharedObjectAIX() + generated_by_testExe3() +
           generated_by_testExe4() + testLib4lib() + testLib4libcfg());
 }

Tests/SharedLibraryArchive/CMakeLists.txt

@@ -36,3 +36,9 @@ if(aix_sla_versioned)
   message(FATAL_ERROR "AIX_SHARED_LIBRARY_ARCHIVE initialized on EXECUTABLE")
 endif()
 target_link_libraries(UseSLA_versioned PRIVATE sla_versioned)
+
+add_library(imported SHARED IMPORTED)
+get_property(aix_sla TARGET imported PROPERTY AIX_SHARED_LIBRARY_ARCHIVE)
+if(aix_sla)
+  message(FATAL_ERROR "AIX_SHARED_LIBRARY_ARCHIVE initialized on imported target")
+endif()