Genex-LINK_GROUP: Add possibility to group libraries at link step

Fixes: #23121

25 files changed, 260 insertions, 0 deletions

diff --git a/Tests/RunCMake/target_link_libraries-LINK_GROUP/CMakeLists.txt b/Tests/RunCMake/target_link_libraries-LINK_GROUP/CMakeLists.txt
new file mode 100644
index 0000000..915fc41
--- /dev/null
+++ b/Tests/RunCMake/target_link_libraries-LINK_GROUP/CMakeLists.txt
@@ -0,0 +1,3 @@
+cmake_minimum_required(VERSION 3.1...3.22)
+project(${RunCMake_TEST} NONE)
+include(${RunCMake_TEST}.cmake NO_POLICY_SCOPE)
diff --git a/Tests/RunCMake/target_link_libraries-LINK_GROUP/LINK_GROUP-group-and-single-check.cmake b/Tests/RunCMake/target_link_libraries-LINK_GROUP/LINK_GROUP-group-and-single-check.cmake
new file mode 100644
index 0000000..3b8f3ba
--- /dev/null
+++ b/Tests/RunCMake/target_link_libraries-LINK_GROUP/LINK_GROUP-group-and-single-check.cmake
@@ -0,0 +1,4 @@
+
+if (NOT actual_stdout MATCHES "(/|-)-START_GROUP\"? +.*${LINK_SHARED_LIBRARY_PREFIX}base1${LINK_SHARED_LIBRARY_SUFFIX} +.*${LINK_SHARED_LIBRARY_PREFIX}base3${LINK_SHARED_LIBRARY_SUFFIX} +\"?(/|-)-END_GROUP\"? +.*${LINK_SHARED_LIBRARY_PREFIX}base5${LINK_SHARED_LIBRARY_SUFFIX} +\"?(/|-)-START_GROUP\"? +.*${LINK_SHARED_LIBRARY_PREFIX}base1${LINK_SHARED_LIBRARY_SUFFIX} +.*${LINK_SHARED_LIBRARY_PREFIX}base3${LINK_SHARED_LIBRARY_SUFFIX} +\"?(/|-)-END_GROUP")
+  set (RunCMake_TEST_FAILED "Not found expected '--START_GROUP <base1> <base3> --END_GROUP <base5> --START_GROUP <base1> <base3> --END_GROUP'.")
+endif()
diff --git a/Tests/RunCMake/target_link_libraries-LINK_GROUP/LINK_GROUP-group-and-single-result.txt b/Tests/RunCMake/target_link_libraries-LINK_GROUP/LINK_GROUP-group-and-single-result.txt
new file mode 100644
index 0000000..8d98f9d
--- /dev/null
+++ b/Tests/RunCMake/target_link_libraries-LINK_GROUP/LINK_GROUP-group-and-single-result.txt
@@ -0,0 +1 @@
+.*
diff --git a/Tests/RunCMake/target_link_libraries-LINK_GROUP/LINK_GROUP-multiple-groups-check.cmake b/Tests/RunCMake/target_link_libraries-LINK_GROUP/LINK_GROUP-multiple-groups-check.cmake
new file mode 100644
index 0000000..97732a5
--- /dev/null
+++ b/Tests/RunCMake/target_link_libraries-LINK_GROUP/LINK_GROUP-multiple-groups-check.cmake
@@ -0,0 +1,4 @@
+
+if (NOT actual_stdout MATCHES "(/|-)-START_GROUP\"? +.*${LINK_SHARED_LIBRARY_PREFIX}base2${LINK_SHARED_LIBRARY_SUFFIX} +.*${LINK_SHARED_LIBRARY_PREFIX}base4${LINK_SHARED_LIBRARY_SUFFIX} +\"?(/|-)-END_GROUP\"? +\"?(/|-)-START_GROUP\"? +.*${LINK_SHARED_LIBRARY_PREFIX}base1${LINK_SHARED_LIBRARY_SUFFIX} +.*${LINK_SHARED_LIBRARY_PREFIX}base2${LINK_SHARED_LIBRARY_SUFFIX} +\"?(/|-)-END_GROUP")
+  set (RunCMake_TEST_FAILED "Not found expected '--START_GROUP <base2> <base4> --END_GROUP --START_GROUP <base1> <base2> --END_GROUP'.")
+endif()
diff --git a/Tests/RunCMake/target_link_libraries-LINK_GROUP/LINK_GROUP-multiple-groups-result.txt b/Tests/RunCMake/target_link_libraries-LINK_GROUP/LINK_GROUP-multiple-groups-result.txt
new file mode 100644
index 0000000..8d98f9d
--- /dev/null
+++ b/Tests/RunCMake/target_link_libraries-LINK_GROUP/LINK_GROUP-multiple-groups-result.txt
@@ -0,0 +1 @@
+.*
diff --git a/Tests/RunCMake/target_link_libraries-LINK_GROUP/LINK_GROUP-simple1-check.cmake b/Tests/RunCMake/target_link_libraries-LINK_GROUP/LINK_GROUP-simple1-check.cmake
new file mode 100644
index 0000000..3e53d26
--- /dev/null
+++ b/Tests/RunCMake/target_link_libraries-LINK_GROUP/LINK_GROUP-simple1-check.cmake
@@ -0,0 +1,4 @@
+
+if (NOT actual_stdout MATCHES "(/|-)-START_GROUP\"? +.*${LINK_SHARED_LIBRARY_PREFIX}base1${LINK_SHARED_LIBRARY_SUFFIX} +.*${LINK_SHARED_LIBRARY_PREFIX}base2${LINK_SHARED_LIBRARY_SUFFIX} +\"?(/|-)-END_GROUP")
+  set (RunCMake_TEST_FAILED "Not found expected '--START_GROUP <base1> <base2> --END_GROUP'.")
+endif()
diff --git a/Tests/RunCMake/target_link_libraries-LINK_GROUP/LINK_GROUP-simple1-result.txt b/Tests/RunCMake/target_link_libraries-LINK_GROUP/LINK_GROUP-simple1-result.txt
new file mode 100644
index 0000000..8d98f9d
--- /dev/null
+++ b/Tests/RunCMake/target_link_libraries-LINK_GROUP/LINK_GROUP-simple1-result.txt
@@ -0,0 +1 @@
+.*
diff --git a/Tests/RunCMake/target_link_libraries-LINK_GROUP/LINK_GROUP-simple2-check.cmake b/Tests/RunCMake/target_link_libraries-LINK_GROUP/LINK_GROUP-simple2-check.cmake
new file mode 100644
index 0000000..475a0e2
--- /dev/null
+++ b/Tests/RunCMake/target_link_libraries-LINK_GROUP/LINK_GROUP-simple2-check.cmake
@@ -0,0 +1,4 @@
+
+if (NOT actual_stdout MATCHES "(/|-)-START_GROUP\"? +.*${LINK_SHARED_LIBRARY_PREFIX}base2${LINK_SHARED_LIBRARY_SUFFIX} +.*${LINK_SHARED_LIBRARY_PREFIX}base3${LINK_SHARED_LIBRARY_SUFFIX} +\"?(/|-)-END_GROUP\"? +.*${LINK_SHARED_LIBRARY_PREFIX}base1${LINK_SHARED_LIBRARY_SUFFIX}")
+  set (RunCMake_TEST_FAILED "Not found expected '--START_GROUP <base2> <base3> --END_GROUP <base1>'.")
+endif()
diff --git a/Tests/RunCMake/target_link_libraries-LINK_GROUP/LINK_GROUP-simple2-result.txt b/Tests/RunCMake/target_link_libraries-LINK_GROUP/LINK_GROUP-simple2-result.txt
new file mode 100644
index 0000000..8d98f9d
--- /dev/null
+++ b/Tests/RunCMake/target_link_libraries-LINK_GROUP/LINK_GROUP-simple2-result.txt
@@ -0,0 +1 @@
+.*
diff --git a/Tests/RunCMake/target_link_libraries-LINK_GROUP/LINK_GROUP-with-LINK_LIBRARY-check.cmake b/Tests/RunCMake/target_link_libraries-LINK_GROUP/LINK_GROUP-with-LINK_LIBRARY-check.cmake
new file mode 100644
index 0000000..2b2460e
--- /dev/null
+++ b/Tests/RunCMake/target_link_libraries-LINK_GROUP/LINK_GROUP-with-LINK_LIBRARY-check.cmake
@@ -0,0 +1,4 @@
+
+if (NOT actual_stdout MATCHES "(/|-)-START_GROUP\"? +\"?(/|-)-LIBFLAG.*${LINK_SHARED_LIBRARY_PREFIX}base1${LINK_SHARED_LIBRARY_SUFFIX}\"? +.*${LINK_SHARED_LIBRARY_PREFIX}base2${LINK_SHARED_LIBRARY_SUFFIX} +\"?(/|-)-END_GROUP")
+  set (RunCMake_TEST_FAILED "Not found expected '--START_GROUP --LIBFLAG<base1> <base2> --END_GROUP'.")
+endif()
diff --git a/Tests/RunCMake/target_link_libraries-LINK_GROUP/LINK_GROUP-with-LINK_LIBRARY-result.txt b/Tests/RunCMake/target_link_libraries-LINK_GROUP/LINK_GROUP-with-LINK_LIBRARY-result.txt
new file mode 100644
index 0000000..8d98f9d
--- /dev/null
+++ b/Tests/RunCMake/target_link_libraries-LINK_GROUP/LINK_GROUP-with-LINK_LIBRARY-result.txt
@@ -0,0 +1 @@
+.*
diff --git a/Tests/RunCMake/target_link_libraries-LINK_GROUP/LINK_GROUP-with-LINK_LIBRARY_OVERRIDE-check.cmake b/Tests/RunCMake/target_link_libraries-LINK_GROUP/LINK_GROUP-with-LINK_LIBRARY_OVERRIDE-check.cmake
new file mode 100644
index 0000000..5ef830c
--- /dev/null
+++ b/Tests/RunCMake/target_link_libraries-LINK_GROUP/LINK_GROUP-with-LINK_LIBRARY_OVERRIDE-check.cmake
@@ -0,0 +1,4 @@
+
+if (NOT actual_stdout MATCHES "(/|-)-START_GROUP\"? +\"?(/|-)-LIBFLAG.*${LINK_SHARED_LIBRARY_PREFIX}base1${LINK_SHARED_LIBRARY_SUFFIX}\"? +\"?(/|-)-LIBFLAG.*${LINK_SHARED_LIBRARY_PREFIX}base3${LINK_SHARED_LIBRARY_SUFFIX}\"? +.*${LINK_SHARED_LIBRARY_PREFIX}base2${LINK_SHARED_LIBRARY_SUFFIX} +\"?(/|-)-END_GROUP")
+  set (RunCMake_TEST_FAILED "Not found expected '--START_GROUP --LIBFLAG<base1> --LIBFLAG<base3> <base2> --END_GROUP'.")
+endif()
diff --git a/Tests/RunCMake/target_link_libraries-LINK_GROUP/LINK_GROUP-with-LINK_LIBRARY_OVERRIDE-result.txt b/Tests/RunCMake/target_link_libraries-LINK_GROUP/LINK_GROUP-with-LINK_LIBRARY_OVERRIDE-result.txt
new file mode 100644
index 0000000..8d98f9d
--- /dev/null
+++ b/Tests/RunCMake/target_link_libraries-LINK_GROUP/LINK_GROUP-with-LINK_LIBRARY_OVERRIDE-result.txt
@@ -0,0 +1 @@
+.*
diff --git a/Tests/RunCMake/target_link_libraries-LINK_GROUP/LINK_GROUP.cmake b/Tests/RunCMake/target_link_libraries-LINK_GROUP/LINK_GROUP.cmake
new file mode 100644
index 0000000..d08db16
--- /dev/null
+++ b/Tests/RunCMake/target_link_libraries-LINK_GROUP/LINK_GROUP.cmake
@@ -0,0 +1,52 @@
+enable_language(C)
+
+# ensure command line is always displayed and do not use any response file
+set(CMAKE_VERBOSE_MAKEFILE TRUE)
+set(CMAKE_C_USE_RESPONSE_FILE_FOR_LIBRARIES FALSE)
+
+if (CMAKE_GENERATOR MATCHES "Borland|NMake")
+  string(REPLACE "${CMAKE_START_TEMP_FILE}" "" CMAKE_C_CREATE_SHARED_LIBRARY "${CMAKE_C_CREATE_SHARED_LIBRARY}")
+  string(REPLACE "${CMAKE_END_TEMP_FILE}" "" CMAKE_C_CREATE_SHARED_LIBRARY "${CMAKE_C_CREATE_SHARED_LIBRARY}")
+endif()
+
+
+add_library(base1 SHARED base.c)
+add_library(base2 SHARED base.c)
+
+
+set(CMAKE_C_LINK_GROUP_USING_feat1 "--START_GROUP" "--END_GROUP")
+set(CMAKE_C_LINK_GROUP_USING_feat1_SUPPORTED TRUE)
+
+set(CMAKE_C_LINK_LIBRARY_USING_feat1 "--LIBFLAG<LIBRARY>")
+set(CMAKE_C_LINK_LIBRARY_USING_feat1_SUPPORTED TRUE)
+
+
+add_library(LinkGroup_simple1 SHARED lib.c)
+target_link_libraries(LinkGroup_simple1 PRIVATE "$<LINK_GROUP:feat1,base1,base2>")
+
+
+add_library(base3 SHARED base.c)
+target_link_libraries(base3 PUBLIC base1)
+add_library(LinkGroup_simple2 SHARED lib.c)
+target_link_libraries(LinkGroup_simple2 PRIVATE "$<LINK_GROUP:feat1,base2,base3>")
+
+
+add_library(base4 SHARED base.c)
+target_link_libraries(base4 INTERFACE "$<LINK_GROUP:feat1,base1,base2>")
+add_library(LinkGroup_multiple-groups SHARED lib.c)
+target_link_libraries(LinkGroup_multiple-groups PRIVATE "$<LINK_GROUP:feat1,base2,base4>")
+
+
+add_library(base5 SHARED base.c)
+target_link_libraries(base5 PUBLIC base1)
+add_library(LinkGroup_group-and-single SHARED lib.c)
+target_link_libraries(LinkGroup_group-and-single PRIVATE "$<LINK_GROUP:feat1,base1,base3>" base5)
+
+
+add_library(LinkGroup_with-LINK_LIBRARY SHARED lib.c)
+target_link_libraries(LinkGroup_with-LINK_LIBRARY PRIVATE "$<LINK_GROUP:feat1,$<LINK_LIBRARY:feat1,base1>,base2>")
+
+
+add_library(LinkGroup_with-LINK_LIBRARY_OVERRIDE SHARED lib.c)
+target_link_libraries(LinkGroup_with-LINK_LIBRARY_OVERRIDE PRIVATE "$<LINK_GROUP:feat1,$<LINK_LIBRARY:feat1,base1,base3>,base2>")
+set_property(TARGET LinkGroup_with-LINK_LIBRARY_OVERRIDE PROPERTY LINK_LIBRARY_OVERRIDE_base1 feat1)
diff --git a/Tests/RunCMake/target_link_libraries-LINK_GROUP/RunCMakeTest.cmake b/Tests/RunCMake/target_link_libraries-LINK_GROUP/RunCMakeTest.cmake
new file mode 100644
index 0000000..eedc5b9
--- /dev/null
+++ b/Tests/RunCMake/target_link_libraries-LINK_GROUP/RunCMakeTest.cmake
@@ -0,0 +1,63 @@
+
+include(RunCMake)
+
+cmake_policy(SET CMP0054 NEW)
+
+macro(run_cmake_target test subtest target)
+  set(RunCMake_TEST_BINARY_DIR ${RunCMake_BINARY_DIR}/${test}-build)
+  set(RunCMake_TEST_NO_CLEAN 1)
+  run_cmake_command(${test}-${subtest} ${CMAKE_COMMAND} --build . --target ${target} --config Release --verbose ${ARGN})
+
+  unset(RunCMake_TEST_BINARY_DIR)
+  unset(RunCMake_TEST_NO_CLEAN)
+endmacro()
+
+
+# Some environments are excluded because they are not able to honor verbose mode
+if ((RunCMake_GENERATOR MATCHES "Makefiles|Ninja|Xcode"
+    OR (RunCMake_GENERATOR MATCHES "Visual Studio" AND MSVC_VERSION GREATER_EQUAL "1600"))
+    AND NOT CMAKE_C_COMPILER_ID STREQUAL "Intel")
+
+  set(RunCMake_TEST_OUTPUT_MERGE TRUE)
+  if (NOT RunCMake_GENERATOR_IS_MULTI_CONFIG)
+    set(RunCMake_TEST_OPTIONS -DCMAKE_BUILD_TYPE=Release)
+  endif()
+
+  if (CMAKE_SYSTEM_NAME STREQUAL "Windows"
+      OR CMAKE_SYSTEM_NAME STREQUAL "CYGWIN"
+      OR CMAKE_SYSTEM_NAME STREQUAL "MSYS")
+    set(LINK_SHARED_LIBRARY_PREFIX ${CMAKE_IMPORT_LIBRARY_PREFIX})
+    set(LINK_SHARED_LIBRARY_SUFFIX ${CMAKE_IMPORT_LIBRARY_SUFFIX})
+  else()
+    set(LINK_SHARED_LIBRARY_PREFIX ${CMAKE_SHARED_LIBRARY_PREFIX})
+    set(LINK_SHARED_LIBRARY_SUFFIX ${CMAKE_SHARED_LIBRARY_SUFFIX})
+  endif()
+  if (MINGW OR MSYS OR CYGWIN)
+    set(LINK_EXTERN_LIBRARY_SUFFIX "")
+  else()
+    set(LINK_EXTERN_LIBRARY_SUFFIX "${CMAKE_IMPORT_LIBRARY_SUFFIX}")
+  endif()
+
+  run_cmake(LINK_GROUP)
+
+  run_cmake_target(LINK_GROUP simple1 LinkGroup_simple1)
+  run_cmake_target(LINK_GROUP simple2 LinkGroup_simple2)
+  run_cmake_target(LINK_GROUP multiple-groups LinkGroup_multiple-groups)
+  run_cmake_target(LINK_GROUP group-and-single LinkGroup_group-and-single)
+  run_cmake_target(LINK_GROUP with-LINK_LIBRARY LinkGroup_with-LINK_LIBRARY)
+  run_cmake_target(LINK_GROUP with-LINK_LIBRARY_OVERRIDE LinkGroup_with-LINK_LIBRARY_OVERRIDE)
+
+  run_cmake(imported-target)
+
+  # tests using features as described in the documentation
+  if((CMAKE_C_COMPILER_ID STREQUAL "GNU" AND CMAKE_SYSTEM_NAME STREQUAL "Linux")
+      OR (CMAKE_C_COMPILER_ID STREQUAL "SunPro" AND CMAKE_C_COMPILER_VERSION VERSION_GREATER "5.9"
+          AND CMAKE_SYSTEM_NAME STREQUAL "SunOS"))
+    run_cmake(cross_refs)
+    run_cmake_target(cross_refs link main)
+  endif()
+
+  unset(RunCMake_TEST_OPTIONS)
+  unset(RunCMake_TEST_OUTPUT_MERGE)
+
+endif()
diff --git a/Tests/RunCMake/target_link_libraries-LINK_GROUP/base.c b/Tests/RunCMake/target_link_libraries-LINK_GROUP/base.c
new file mode 100644
index 0000000..a5075d4
--- /dev/null
+++ b/Tests/RunCMake/target_link_libraries-LINK_GROUP/base.c
@@ -0,0 +1,9 @@
+
+#if !defined(STATIC_BASE)
+#  if defined(_WIN32)
+__declspec(dllexport)
+#  endif
+#endif
+  void base()
+{
+}
diff --git a/Tests/RunCMake/target_link_libraries-LINK_GROUP/cross_refs.cmake b/Tests/RunCMake/target_link_libraries-LINK_GROUP/cross_refs.cmake
new file mode 100644
index 0000000..4a2a08c
--- /dev/null
+++ b/Tests/RunCMake/target_link_libraries-LINK_GROUP/cross_refs.cmake
@@ -0,0 +1,22 @@
+
+enable_language(C)
+
+  set(CMAKE_C_LINK_GROUP_USING_cross_refs_SUPPORTED TRUE)
+if(CMAKE_C_COMPILER_ID STREQUAL "GNU"
+  AND CMAKE_SYSTEM_NAME STREQUAL "Linux")
+set(CMAKE_C_LINK_GROUP_USING_cross_refs "LINKER:--start-group"
+                                        "LINKER:--end-group")
+elseif(CMAKE_C_COMPILER_ID STREQUAL "SunPro"
+       AND CMAKE_SYSTEM_NAME STREQUAL "SunOS")
+  set(CMAKE_C_LINK_GROUP_USING_cross_refs "LINKER:-z,rescan-start"
+                                          "LINKER:-z,rescan-end")
+else()
+  # feature not yet supported for the other environments
+  set(CMAKE_C_LINK_GROUP_USING_cross_refs_SUPPORTED FALSE)
+endif()
+
+add_library(func1 STATIC func1.c func3.c)
+add_library(func2 STATIC func2.c)
+
+add_executable(main main.c)
+target_link_libraries(main PRIVATE "$<LINK_GROUP:cross_refs,func1,func2>")
diff --git a/Tests/RunCMake/target_link_libraries-LINK_GROUP/func1.c b/Tests/RunCMake/target_link_libraries-LINK_GROUP/func1.c
new file mode 100644
index 0000000..3399e00
--- /dev/null
+++ b/Tests/RunCMake/target_link_libraries-LINK_GROUP/func1.c
@@ -0,0 +1,7 @@
+
+extern void func2();
+
+void func1()
+{
+  func2();
+}
diff --git a/Tests/RunCMake/target_link_libraries-LINK_GROUP/func2.c b/Tests/RunCMake/target_link_libraries-LINK_GROUP/func2.c
new file mode 100644
index 0000000..0f9aa64
--- /dev/null
+++ b/Tests/RunCMake/target_link_libraries-LINK_GROUP/func2.c
@@ -0,0 +1,7 @@
+
+extern void func3();
+
+void func2()
+{
+  func3();
+}
diff --git a/Tests/RunCMake/target_link_libraries-LINK_GROUP/func3.c b/Tests/RunCMake/target_link_libraries-LINK_GROUP/func3.c
new file mode 100644
index 0000000..0b7df64
--- /dev/null
+++ b/Tests/RunCMake/target_link_libraries-LINK_GROUP/func3.c
@@ -0,0 +1,6 @@
+
+extern void func3();
+
+void func3()
+{
+}
diff --git a/Tests/RunCMake/target_link_libraries-LINK_GROUP/imported-target-result.txt b/Tests/RunCMake/target_link_libraries-LINK_GROUP/imported-target-result.txt
new file mode 100644
index 0000000..d00491f
--- /dev/null
+++ b/Tests/RunCMake/target_link_libraries-LINK_GROUP/imported-target-result.txt
@@ -0,0 +1 @@
+1
diff --git a/Tests/RunCMake/target_link_libraries-LINK_GROUP/imported-target-stdout.txt b/Tests/RunCMake/target_link_libraries-LINK_GROUP/imported-target-stdout.txt
new file mode 100644
index 0000000..16b93d1
--- /dev/null
+++ b/Tests/RunCMake/target_link_libraries-LINK_GROUP/imported-target-stdout.txt
@@ -0,0 +1,16 @@
+CMake Warning \(dev\) at imported-target.cmake:[0-9]+ \(add_library\):
+  The 'IMPORTED' target 'NS::lib2' uses the generator-expression
+  '\$<LINK_GROUP>' with the feature 'feat', which is undefined or unsupported.
+
+  Did you miss to define it by setting variables
+  "CMAKE_C_LINK_GROUP_USING_feat" and
+  "CMAKE_C_LINK_GROUP_USING_feat_SUPPORTED"\?
+Call Stack \(most recent call first\):
+  CMakeLists.txt:[0-9]+ \(include\)
+This warning is for project developers.  Use -Wno-dev to suppress it.
+
+CMake Error at imported-target.cmake:[0-9]+ \(add_library\):
+  Feature 'feat', specified through generator-expression '\$<LINK_GROUP>' to
+  link target 'lib', is not supported for the 'C' link language.
+Call Stack \(most recent call first\):
+  CMakeLists.txt:[0-9]+ \(include\)
diff --git a/Tests/RunCMake/target_link_libraries-LINK_GROUP/imported-target.cmake b/Tests/RunCMake/target_link_libraries-LINK_GROUP/imported-target.cmake
new file mode 100644
index 0000000..bd83f97
--- /dev/null
+++ b/Tests/RunCMake/target_link_libraries-LINK_GROUP/imported-target.cmake
@@ -0,0 +1,22 @@
+
+enable_language(C)
+
+# Create imported target NS::lib
+add_library(NS::lib STATIC IMPORTED)
+set_target_properties(NS::lib PROPERTIES
+  IMPORTED_LOCATION "/path/to/lib"
+  IMPORTED_IMPLIB "/path/to/import.lib"
+)
+
+# Create imported target NS::lib2
+add_library(NS::lib2 SHARED IMPORTED)
+
+set_target_properties(NS::lib2 PROPERTIES
+  IMPORTED_LOCATION "/path/to/lib"
+  IMPORTED_IMPLIB "/path/to/import.lib"
+  INTERFACE_LINK_LIBRARIES "$<LINK_GROUP:feat,NS::lib>"
+)
+
+
+add_library(lib SHARED lib.c)
+target_link_libraries(lib PRIVATE NS::lib2)
diff --git a/Tests/RunCMake/target_link_libraries-LINK_GROUP/lib.c b/Tests/RunCMake/target_link_libraries-LINK_GROUP/lib.c
new file mode 100644
index 0000000..35ab367
--- /dev/null
+++ b/Tests/RunCMake/target_link_libraries-LINK_GROUP/lib.c
@@ -0,0 +1,15 @@
+
+#if !defined(STATIC_BASE)
+#  if defined(_WIN32)
+__declspec(dllimport)
+#  endif
+#endif
+  void base();
+
+#if defined(_WIN32)
+__declspec(dllexport)
+#endif
+  void lib()
+{
+  base();
+}
diff --git a/Tests/RunCMake/target_link_libraries-LINK_GROUP/main.c b/Tests/RunCMake/target_link_libraries-LINK_GROUP/main.c
new file mode 100644
index 0000000..403583d
--- /dev/null
+++ b/Tests/RunCMake/target_link_libraries-LINK_GROUP/main.c
@@ -0,0 +1,7 @@
+
+extern void func1();
+
+int main()
+{
+  func1();
+}