Merge topic 'target-objects'

d7988ff6b8 Merge branch 'backport-target-objects' into target-objects
1814853081 cmCommonTargetGenerator: Drop unused local variable
377b78aef9 cmComputeLinkInformation: Simplify recording OBJECT libraries as link items
50fdaf8f1f cmComputeLinkInformation: Track targets named by TARGET_OBJECTS sources
0e26bd334d cmCommonTargetGenerator: Factor out GetLinkedTargetDirectories loop body

Acked-by: Kitware Robot <kwrobot@kitware.com>
Acked-by: buildbot <buildbot@kitware.com>
Reviewed-by: Ben Boeckel <ben.boeckel@kitware.com>
Merge-request: !8974

5 files changed, 33 insertions, 0 deletions

diff --git a/Tests/ObjectLibrary/CMakeLists.txt b/Tests/ObjectLibrary/CMakeLists.txt
index b57761b..2bc2327 100644
--- a/Tests/ObjectLibrary/CMakeLists.txt
+++ b/Tests/ObjectLibrary/CMakeLists.txt
@@ -77,3 +77,5 @@ add_subdirectory(ExportLanguages)
 add_subdirectory(LinkObjects)
 
 add_subdirectory(Transitive)
+
+add_subdirectory(TransitiveLinkDeps)
diff --git a/Tests/ObjectLibrary/TransitiveLinkDeps/CMakeLists.txt b/Tests/ObjectLibrary/TransitiveLinkDeps/CMakeLists.txt
new file mode 100644
index 0000000..3f561fa
--- /dev/null
+++ b/Tests/ObjectLibrary/TransitiveLinkDeps/CMakeLists.txt
@@ -0,0 +1,15 @@
+add_library(implgather INTERFACE)
+
+add_library(dep STATIC dep.c)
+
+add_library(deps INTERFACE)
+target_link_libraries(deps INTERFACE dep)
+
+add_library(impl_obj OBJECT impl_obj.c)
+target_link_libraries(impl_obj PUBLIC deps)
+
+target_sources(implgather INTERFACE "$<TARGET_OBJECTS:impl_obj>")
+target_link_libraries(implgather INTERFACE impl_obj)
+
+add_executable(useimpl main.c)
+target_link_libraries(useimpl PRIVATE implgather)
diff --git a/Tests/ObjectLibrary/TransitiveLinkDeps/dep.c b/Tests/ObjectLibrary/TransitiveLinkDeps/dep.c
new file mode 100644
index 0000000..7cc62c3
--- /dev/null
+++ b/Tests/ObjectLibrary/TransitiveLinkDeps/dep.c
@@ -0,0 +1,4 @@
+int from_dep(void)
+{
+  return 0;
+}
diff --git a/Tests/ObjectLibrary/TransitiveLinkDeps/impl_obj.c b/Tests/ObjectLibrary/TransitiveLinkDeps/impl_obj.c
new file mode 100644
index 0000000..f5760b7
--- /dev/null
+++ b/Tests/ObjectLibrary/TransitiveLinkDeps/impl_obj.c
@@ -0,0 +1,6 @@
+int from_dep(void);
+
+int impl_obj(void)
+{
+  return from_dep();
+}
diff --git a/Tests/ObjectLibrary/TransitiveLinkDeps/main.c b/Tests/ObjectLibrary/TransitiveLinkDeps/main.c
new file mode 100644
index 0000000..5661f57
--- /dev/null
+++ b/Tests/ObjectLibrary/TransitiveLinkDeps/main.c
@@ -0,0 +1,6 @@
+int impl_obj(void);
+
+int main(int argc, char* argv[])
+{
+  return impl_obj();
+}