Link step: Enable to configure deduplication of libraries

Some platforms, Apple or Windows for instance, do not require to duplicate
static libraries to resolve mutual dependencies. Moreover, Xcode version 15
emits a warning if a library is duplicated.
On Windows, enable a better control of libraries order.

Fixes: #20722, #25297

115 files changed, 480 insertions, 24 deletions

diff --git a/Tests/RunCMake/CMP0156/CMP0156-Common.cmake b/Tests/RunCMake/CMP0156/CMP0156-Common.cmake
new file mode 100644
index 0000000..a382c77
--- /dev/null
+++ b/Tests/RunCMake/CMP0156/CMP0156-Common.cmake
@@ -0,0 +1,27 @@
+
+enable_language(C)
+
+# ensure link is successful in case of circular dependency
+add_library(lib1 STATIC lib1.c)
+add_library(lib2 STATIC lib2.c)
+
+target_link_libraries(lib1 PRIVATE lib2)
+target_link_libraries(lib2 PRIVATE lib1)
+
+add_executable(main main.c)
+target_link_libraries(main PRIVATE lib1)
+if (APPLE_TEST)
+  target_link_options(main PRIVATE "LINKER:-fatal_warnings")
+else()
+  target_link_options(main PRIVATE "$<$<AND:$<NOT:$<TARGET_POLICY:CMP0156>>,$<C_COMPILER_ID:AppleClang>,$<VERSION_GREATER_EQUAL:$<C_COMPILER_VERSION>,15.0>>:LINKER:-no_warn_duplicate_libraries>")
+endif()
+
+
+add_library(lib3 SHARED lib3.c)
+add_library(lib4 STATIC lib4.c)
+target_link_libraries(lib4 PRIVATE lib3)
+
+# link specifying a shared library not directly used by the target
+# on Windows, with CMP0156=NEW, lib3 is specified before lib4 on link step
+add_executable(main2 main2.c)
+target_link_libraries(main2 PRIVATE lib3 lib4)
diff --git a/Tests/RunCMake/CMP0156/CMP0156-NEW-AppleClang.cmake b/Tests/RunCMake/CMP0156/CMP0156-NEW-AppleClang.cmake
new file mode 100644
index 0000000..59f5ecd
--- /dev/null
+++ b/Tests/RunCMake/CMP0156/CMP0156-NEW-AppleClang.cmake
@@ -0,0 +1,5 @@
+
+cmake_policy(SET CMP0156 NEW)
+set(APPLE_TEST TRUE)
+
+include (CMP0156-Common.cmake)
diff --git a/Tests/RunCMake/CMP0156/CMP0156-NEW.cmake b/Tests/RunCMake/CMP0156/CMP0156-NEW.cmake
new file mode 100644
index 0000000..4387b37
--- /dev/null
+++ b/Tests/RunCMake/CMP0156/CMP0156-NEW.cmake
@@ -0,0 +1,4 @@
+
+cmake_policy(SET CMP0156 NEW)
+
+include (CMP0156-Common.cmake)
diff --git a/Tests/RunCMake/CMP0156/CMP0156-OLD-AppleClang-build-result.txt b/Tests/RunCMake/CMP0156/CMP0156-OLD-AppleClang-build-result.txt
new file mode 100644
index 0000000..b18168c
--- /dev/null
+++ b/Tests/RunCMake/CMP0156/CMP0156-OLD-AppleClang-build-result.txt
@@ -0,0 +1 @@
+.+
diff --git a/Tests/RunCMake/CMP0156/CMP0156-OLD-AppleClang-build-stdout.txt b/Tests/RunCMake/CMP0156/CMP0156-OLD-AppleClang-build-stdout.txt
new file mode 100644
index 0000000..b4afc27
--- /dev/null
+++ b/Tests/RunCMake/CMP0156/CMP0156-OLD-AppleClang-build-stdout.txt
@@ -0,0 +1,3 @@
+ld: warning: ignoring duplicate libraries: '.*liblib1.a', '.*liblib2.a'
+ld: fatal warning\(s\) induced error \(-fatal_warnings\)
+clang: error: linker command failed with exit code 1 \(use -v to see invocation\)
diff --git a/Tests/RunCMake/CMP0156/CMP0156-OLD-AppleClang.cmake b/Tests/RunCMake/CMP0156/CMP0156-OLD-AppleClang.cmake
new file mode 100644
index 0000000..33e1287
--- /dev/null
+++ b/Tests/RunCMake/CMP0156/CMP0156-OLD-AppleClang.cmake
@@ -0,0 +1,5 @@
+
+cmake_policy(SET CMP0156 OLD)
+set(APPLE_TEST TRUE)
+
+include (CMP0156-Common.cmake)
diff --git a/Tests/RunCMake/CMP0156/CMP0156-OLD.cmake b/Tests/RunCMake/CMP0156/CMP0156-OLD.cmake
new file mode 100644
index 0000000..b012a1a
--- /dev/null
+++ b/Tests/RunCMake/CMP0156/CMP0156-OLD.cmake
@@ -0,0 +1,4 @@
+
+cmake_policy(SET CMP0156 OLD)
+
+include (CMP0156-Common.cmake)
diff --git a/Tests/RunCMake/CMP0156/CMP0156-WARN-stderr.txt b/Tests/RunCMake/CMP0156/CMP0156-WARN-stderr.txt
new file mode 100644
index 0000000..f52d7d8
--- /dev/null
+++ b/Tests/RunCMake/CMP0156/CMP0156-WARN-stderr.txt
@@ -0,0 +1,35 @@
+CMake Warning \(dev\) at CMP0156-Common.cmake:[0-9]+ \(add_library\):
+  Policy CMP0156 is not set: De-duplicate libraries on link lines based on
+  linker capabilities.  Run "cmake --help-policy CMP0156" for policy details.
+  Use the cmake_policy command to set the policy and suppress this warning.
+
+  Since the policy is not set, legacy libraries de-duplication strategy will
+  be applied.
+Call Stack \(most recent call first\):
+  CMP0156-WARN.cmake:[0-9]+ \(include\)
+  CMakeLists.txt:[0-9]+ \(include\)
+This warning is for project developers.  Use -Wno-dev to suppress it.
+
+CMake Warning \(dev\) at CMP0156-Common.cmake:[0-9]+ \(add_library\):
+  Policy CMP0156 is not set: De-duplicate libraries on link lines based on
+  linker capabilities.  Run "cmake --help-policy CMP0156" for policy details.
+  Use the cmake_policy command to set the policy and suppress this warning.
+
+  Since the policy is not set, legacy libraries de-duplication strategy will
+  be applied.
+Call Stack \(most recent call first\):
+  CMP0156-WARN.cmake:[0-9]+ \(include\)
+  CMakeLists.txt:[0-9]+ \(include\)
+This warning is for project developers.  Use -Wno-dev to suppress it.
+
+CMake Warning \(dev\) at CMP0156-Common.cmake:[0-9]+ \(add_executable\):
+  Policy CMP0156 is not set: De-duplicate libraries on link lines based on
+  linker capabilities.  Run "cmake --help-policy CMP0156" for policy details.
+  Use the cmake_policy command to set the policy and suppress this warning.
+
+  Since the policy is not set, legacy libraries de-duplication strategy will
+  be applied.
+Call Stack \(most recent call first\):
+  CMP0156-WARN.cmake:[0-9]+ \(include\)
+  CMakeLists.txt:[0-9]+ \(include\)
+This warning is for project developers.  Use -Wno-dev to suppress it.
diff --git a/Tests/RunCMake/CMP0156/CMP0156-WARN.cmake b/Tests/RunCMake/CMP0156/CMP0156-WARN.cmake
new file mode 100644
index 0000000..5f469ef
--- /dev/null
+++ b/Tests/RunCMake/CMP0156/CMP0156-WARN.cmake
@@ -0,0 +1,4 @@
+
+set(CMAKE_POLICY_WARNING_CMP0156 TRUE)
+
+include (CMP0156-Common.cmake)
diff --git a/Tests/RunCMake/CMP0156/CMakeLists.txt b/Tests/RunCMake/CMP0156/CMakeLists.txt
new file mode 100644
index 0000000..922aad6
--- /dev/null
+++ b/Tests/RunCMake/CMP0156/CMakeLists.txt
@@ -0,0 +1,3 @@
+cmake_minimum_required(VERSION 3.27)
+project(${RunCMake_TEST} NONE)
+include(${RunCMake_TEST}.cmake)
diff --git a/Tests/RunCMake/CMP0156/RunCMakeTest.cmake b/Tests/RunCMake/CMP0156/RunCMakeTest.cmake
new file mode 100644
index 0000000..bd51830
--- /dev/null
+++ b/Tests/RunCMake/CMP0156/RunCMakeTest.cmake
@@ -0,0 +1,26 @@
+include(RunCMake)
+
+# CMP0156 control how libraries are specified for the link step
+# a sensible configuration is how circular dependency is handled
+
+macro(run_cmake_and_build test)
+  set(RunCMake_TEST_BINARY_DIR ${RunCMake_BINARY_DIR}/${test}-build)
+  set(RunCMake_TEST_OUTPUT_MERGE TRUE)
+  run_cmake(${test})
+  set(RunCMake_TEST_NO_CLEAN TRUE)
+  run_cmake_command(${test}-build ${CMAKE_COMMAND} --build . --config Release)
+  unset(RunCMake_TEST_NO_CLEAN)
+  unset(RunCMake_TEST_BINARY_DIR)
+  unset(RunCMake_TEST_OUTPUT_MERGE)
+endmacro()
+
+run_cmake(CMP0156-WARN)
+run_cmake_and_build(CMP0156-OLD)
+run_cmake_and_build(CMP0156-NEW)
+
+if (CMAKE_C_COMPILER_ID STREQUAL "AppleClang"
+    AND CMAKE_C_COMPILER_VERSION GREATER_EQUAL "15.0")
+  # special case for Apple: with CMP0156=OLD, linker will warning on duplicate libraries
+  run_cmake_and_build(CMP0156-OLD-AppleClang)
+  run_cmake_and_build(CMP0156-NEW-AppleClang)
+endif()
diff --git a/Tests/RunCMake/CMP0156/lib1.c b/Tests/RunCMake/CMP0156/lib1.c
new file mode 100644
index 0000000..faad375
--- /dev/null
+++ b/Tests/RunCMake/CMP0156/lib1.c
@@ -0,0 +1,7 @@
+
+extern void lib2(void);
+
+void lib1(void)
+{
+  lib2();
+}
diff --git a/Tests/RunCMake/CMP0156/lib2.c b/Tests/RunCMake/CMP0156/lib2.c
new file mode 100644
index 0000000..9db7914
--- /dev/null
+++ b/Tests/RunCMake/CMP0156/lib2.c
@@ -0,0 +1,7 @@
+
+extern void lib1(void);
+
+void lib2(void)
+{
+  lib1();
+}
diff --git a/Tests/RunCMake/CMP0156/lib3.c b/Tests/RunCMake/CMP0156/lib3.c
new file mode 100644
index 0000000..e63e456
--- /dev/null
+++ b/Tests/RunCMake/CMP0156/lib3.c
@@ -0,0 +1,7 @@
+
+#if defined(_WIN32)
+__declspec(dllexport)
+#endif
+  void lib3(void)
+{
+}
diff --git a/Tests/RunCMake/CMP0156/lib4.c b/Tests/RunCMake/CMP0156/lib4.c
new file mode 100644
index 0000000..a992168
--- /dev/null
+++ b/Tests/RunCMake/CMP0156/lib4.c
@@ -0,0 +1,9 @@
+
+#if defined(_WIN32)
+__declspec(dllimport)
+#endif
+  void lib3(void);
+
+void lib4(void)
+{
+}
diff --git a/Tests/RunCMake/CMP0156/main.c b/Tests/RunCMake/CMP0156/main.c
new file mode 100644
index 0000000..06edfd5
--- /dev/null
+++ b/Tests/RunCMake/CMP0156/main.c
@@ -0,0 +1,9 @@
+
+extern void lib1(void);
+
+int main(void)
+{
+  lib1();
+
+  return 0;
+}
diff --git a/Tests/RunCMake/CMP0156/main2.c b/Tests/RunCMake/CMP0156/main2.c
new file mode 100644
index 0000000..9fc2838
--- /dev/null
+++ b/Tests/RunCMake/CMP0156/main2.c
@@ -0,0 +1,9 @@
+
+extern void lib4(void);
+
+int main(void)
+{
+  lib4();
+
+  return 0;
+}
diff --git a/Tests/RunCMake/CMakeLists.txt b/Tests/RunCMake/CMakeLists.txt
index 9902e0a..86fa76e 100644
--- a/Tests/RunCMake/CMakeLists.txt
+++ b/Tests/RunCMake/CMakeLists.txt
@@ -170,6 +170,8 @@ if(NOT WIN32 OR CYGWIN)
 endif()
 
 add_RunCMake_test(CMP0153)
+add_RunCMake_test(CMP0156 -DCMAKE_C_COMPILER_ID=${CMAKE_C_COMPILER_ID}
+                          -DCMAKE_C_COMPILER_VERSION=${CMAKE_C_COMPILER_VERSION})
 
 # The test for Policy 65 requires the use of the
 # CMAKE_SHARED_LIBRARY_LINK_CXX_FLAGS variable, which both the VS and Xcode
@@ -747,6 +749,7 @@ if (CMAKE_SYSTEM_NAME MATCHES "(Linux|Darwin|Windows)"
                                     -DCMAKE_C_COMPILER_VERSION=${CMAKE_C_COMPILER_VERSION})
 endif()
 
+add_RunCMake_test(LinkLibrariesProcessing)
 add_RunCMake_test(File_Archive)
 add_RunCMake_test(File_Configure)
 add_RunCMake_test(File_Generate)
diff --git a/Tests/RunCMake/LinkLibrariesProcessing/CMakeLists.txt b/Tests/RunCMake/LinkLibrariesProcessing/CMakeLists.txt
new file mode 100644
index 0000000..5773ae3
--- /dev/null
+++ b/Tests/RunCMake/LinkLibrariesProcessing/CMakeLists.txt
@@ -0,0 +1,3 @@
+cmake_minimum_required(VERSION 3.28...3.29)
+project(${RunCMake_TEST} NONE)
+include(${RunCMake_TEST}.cmake)
diff --git a/Tests/RunCMake/LinkLibrariesProcessing/InvalidConfiguration1-result.txt b/Tests/RunCMake/LinkLibrariesProcessing/InvalidConfiguration1-result.txt
new file mode 100644
index 0000000..d00491f
--- /dev/null
+++ b/Tests/RunCMake/LinkLibrariesProcessing/InvalidConfiguration1-result.txt
@@ -0,0 +1 @@
+1
diff --git a/Tests/RunCMake/LinkLibrariesProcessing/InvalidConfiguration1-stderr.txt b/Tests/RunCMake/LinkLibrariesProcessing/InvalidConfiguration1-stderr.txt
new file mode 100644
index 0000000..2566d8f
--- /dev/null
+++ b/Tests/RunCMake/LinkLibrariesProcessing/InvalidConfiguration1-stderr.txt
@@ -0,0 +1,7 @@
+CMake Error at InvalidConfiguration1.cmake:[0-9]+ \(add_executable\):
+  Erroneous option\(s\) for 'CMAKE_C_LINK_LIBRARIES_PROCESSING':
+
+    ORDER=
+
+Call Stack \(most recent call first\):
+  CMakeLists.txt:[0-9]+ \(include\)
diff --git a/Tests/RunCMake/LinkLibrariesProcessing/InvalidConfiguration1.cmake b/Tests/RunCMake/LinkLibrariesProcessing/InvalidConfiguration1.cmake
new file mode 100644
index 0000000..e79eb45
--- /dev/null
+++ b/Tests/RunCMake/LinkLibrariesProcessing/InvalidConfiguration1.cmake
@@ -0,0 +1,9 @@
+
+enable_language(C)
+
+set(CMAKE_C_LINK_LIBRARIES_PROCESSING ORDER= UNICITY=ALL)
+
+add_library(lib STATIC lib.c)
+
+add_executable(main main.c)
+target_link_libraries(main PRIVATE lib)
diff --git a/Tests/RunCMake/LinkLibrariesProcessing/InvalidConfiguration2-result.txt b/Tests/RunCMake/LinkLibrariesProcessing/InvalidConfiguration2-result.txt
new file mode 100644
index 0000000..d00491f
--- /dev/null
+++ b/Tests/RunCMake/LinkLibrariesProcessing/InvalidConfiguration2-result.txt
@@ -0,0 +1 @@
+1
diff --git a/Tests/RunCMake/LinkLibrariesProcessing/InvalidConfiguration2-stderr.txt b/Tests/RunCMake/LinkLibrariesProcessing/InvalidConfiguration2-stderr.txt
new file mode 100644
index 0000000..933031d
--- /dev/null
+++ b/Tests/RunCMake/LinkLibrariesProcessing/InvalidConfiguration2-stderr.txt
@@ -0,0 +1,7 @@
+CMake Error at InvalidConfiguration2.cmake:[0-9]+ \(add_executable\):
+  Erroneous option\(s\) for 'CMAKE_C_LINK_LIBRARIES_PROCESSING':
+
+    ORDER
+
+Call Stack \(most recent call first\):
+  CMakeLists.txt:[0-9]+ \(include\)
diff --git a/Tests/RunCMake/LinkLibrariesProcessing/InvalidConfiguration2.cmake b/Tests/RunCMake/LinkLibrariesProcessing/InvalidConfiguration2.cmake
new file mode 100644
index 0000000..c9da734
--- /dev/null
+++ b/Tests/RunCMake/LinkLibrariesProcessing/InvalidConfiguration2.cmake
@@ -0,0 +1,9 @@
+
+enable_language(C)
+
+set(CMAKE_C_LINK_LIBRARIES_PROCESSING UNICITY=ALL ORDER)
+
+add_library(lib STATIC lib.c)
+
+add_executable(main main.c)
+target_link_libraries(main PRIVATE lib)
diff --git a/Tests/RunCMake/LinkLibrariesProcessing/InvalidConfiguration3-result.txt b/Tests/RunCMake/LinkLibrariesProcessing/InvalidConfiguration3-result.txt
new file mode 100644
index 0000000..d00491f
--- /dev/null
+++ b/Tests/RunCMake/LinkLibrariesProcessing/InvalidConfiguration3-result.txt
@@ -0,0 +1 @@
+1
diff --git a/Tests/RunCMake/LinkLibrariesProcessing/InvalidConfiguration3-stderr.txt b/Tests/RunCMake/LinkLibrariesProcessing/InvalidConfiguration3-stderr.txt
new file mode 100644
index 0000000..eba1eb2
--- /dev/null
+++ b/Tests/RunCMake/LinkLibrariesProcessing/InvalidConfiguration3-stderr.txt
@@ -0,0 +1,7 @@
+CMake Error at InvalidConfiguration3.cmake:[0-9]+ \(add_executable\):
+  Erroneous option\(s\) for 'CMAKE_C_LINK_LIBRARIES_PROCESSING':
+
+    WRONG=REVERSE
+
+Call Stack \(most recent call first\):
+  CMakeLists.txt:[0-9]+ \(include\)
diff --git a/Tests/RunCMake/LinkLibrariesProcessing/InvalidConfiguration3.cmake b/Tests/RunCMake/LinkLibrariesProcessing/InvalidConfiguration3.cmake
new file mode 100644
index 0000000..a1311fe
--- /dev/null
+++ b/Tests/RunCMake/LinkLibrariesProcessing/InvalidConfiguration3.cmake
@@ -0,0 +1,9 @@
+
+enable_language(C)
+
+set(CMAKE_C_LINK_LIBRARIES_PROCESSING WRONG=REVERSE UNICITY=ALL)
+
+add_library(lib STATIC lib.c)
+
+add_executable(main main.c)
+target_link_libraries(main PRIVATE lib)
diff --git a/Tests/RunCMake/LinkLibrariesProcessing/InvalidConfiguration4-result.txt b/Tests/RunCMake/LinkLibrariesProcessing/InvalidConfiguration4-result.txt
new file mode 100644
index 0000000..d00491f
--- /dev/null
+++ b/Tests/RunCMake/LinkLibrariesProcessing/InvalidConfiguration4-result.txt
@@ -0,0 +1 @@
+1
diff --git a/Tests/RunCMake/LinkLibrariesProcessing/InvalidConfiguration4-stderr.txt b/Tests/RunCMake/LinkLibrariesProcessing/InvalidConfiguration4-stderr.txt
new file mode 100644
index 0000000..46d5513
--- /dev/null
+++ b/Tests/RunCMake/LinkLibrariesProcessing/InvalidConfiguration4-stderr.txt
@@ -0,0 +1,8 @@
+CMake Error at InvalidConfiguration4.cmake:[0-9]+ \(add_executable\):
+  Erroneous option\(s\) for 'CMAKE_C_LINK_LIBRARIES_PROCESSING':
+
+    WRONG=REVERSE
+    UNICITY=WRONG
+
+Call Stack \(most recent call first\):
+  CMakeLists.txt:[0-9]+ \(include\)
diff --git a/Tests/RunCMake/LinkLibrariesProcessing/InvalidConfiguration4.cmake b/Tests/RunCMake/LinkLibrariesProcessing/InvalidConfiguration4.cmake
new file mode 100644
index 0000000..9d48f4f
--- /dev/null
+++ b/Tests/RunCMake/LinkLibrariesProcessing/InvalidConfiguration4.cmake
@@ -0,0 +1,9 @@
+
+enable_language(C)
+
+set(CMAKE_C_LINK_LIBRARIES_PROCESSING WRONG=REVERSE UNICITY=WRONG)
+
+add_library(lib STATIC lib.c)
+
+add_executable(main main.c)
+target_link_libraries(main PRIVATE lib)
diff --git a/Tests/RunCMake/LinkLibrariesProcessing/Invalid_ORDER-result.txt b/Tests/RunCMake/LinkLibrariesProcessing/Invalid_ORDER-result.txt
new file mode 100644
index 0000000..d00491f
--- /dev/null
+++ b/Tests/RunCMake/LinkLibrariesProcessing/Invalid_ORDER-result.txt
@@ -0,0 +1 @@
+1
diff --git a/Tests/RunCMake/LinkLibrariesProcessing/Invalid_ORDER-stderr.txt b/Tests/RunCMake/LinkLibrariesProcessing/Invalid_ORDER-stderr.txt
new file mode 100644
index 0000000..33a7552
--- /dev/null
+++ b/Tests/RunCMake/LinkLibrariesProcessing/Invalid_ORDER-stderr.txt
@@ -0,0 +1,7 @@
+CMake Error at Invalid_ORDER.cmake:[0-9]+ \(add_executable\):
+  Erroneous option\(s\) for 'CMAKE_C_LINK_LIBRARIES_PROCESSING':
+
+    ORDER=WRONG
+
+Call Stack \(most recent call first\):
+  CMakeLists.txt:[0-9]+ \(include\)
diff --git a/Tests/RunCMake/LinkLibrariesProcessing/Invalid_ORDER.cmake b/Tests/RunCMake/LinkLibrariesProcessing/Invalid_ORDER.cmake
new file mode 100644
index 0000000..72a7e02
--- /dev/null
+++ b/Tests/RunCMake/LinkLibrariesProcessing/Invalid_ORDER.cmake
@@ -0,0 +1,9 @@
+
+enable_language(C)
+
+set(CMAKE_C_LINK_LIBRARIES_PROCESSING ORDER=WRONG UNICITY=ALL)
+
+add_library(lib STATIC lib.c)
+
+add_executable(main main.c)
+target_link_libraries(main PRIVATE lib)
diff --git a/Tests/RunCMake/LinkLibrariesProcessing/Invalid_UNICITY-result.txt b/Tests/RunCMake/LinkLibrariesProcessing/Invalid_UNICITY-result.txt
new file mode 100644
index 0000000..d00491f
--- /dev/null
+++ b/Tests/RunCMake/LinkLibrariesProcessing/Invalid_UNICITY-result.txt
@@ -0,0 +1 @@
+1
diff --git a/Tests/RunCMake/LinkLibrariesProcessing/Invalid_UNICITY-stderr.txt b/Tests/RunCMake/LinkLibrariesProcessing/Invalid_UNICITY-stderr.txt
new file mode 100644
index 0000000..4d759b7
--- /dev/null
+++ b/Tests/RunCMake/LinkLibrariesProcessing/Invalid_UNICITY-stderr.txt
@@ -0,0 +1,7 @@
+CMake Error at Invalid_UNICITY.cmake:[0-9]+ \(add_executable\):
+  Erroneous option\(s\) for 'CMAKE_C_LINK_LIBRARIES_PROCESSING':
+
+    UNICITY=WRONG
+
+Call Stack \(most recent call first\):
+  CMakeLists.txt:[0-9]+ \(include\)
diff --git a/Tests/RunCMake/LinkLibrariesProcessing/Invalid_UNICITY.cmake b/Tests/RunCMake/LinkLibrariesProcessing/Invalid_UNICITY.cmake
new file mode 100644
index 0000000..f423eef
--- /dev/null
+++ b/Tests/RunCMake/LinkLibrariesProcessing/Invalid_UNICITY.cmake
@@ -0,0 +1,9 @@
+
+enable_language(C)
+
+set(CMAKE_C_LINK_LIBRARIES_PROCESSING ORDER=REVERSE UNICITY=WRONG)
+
+add_library(lib STATIC lib.c)
+
+add_executable(main main.c)
+target_link_libraries(main PRIVATE lib)
diff --git a/Tests/RunCMake/LinkLibrariesProcessing/RunCMakeTest.cmake b/Tests/RunCMake/LinkLibrariesProcessing/RunCMakeTest.cmake
new file mode 100644
index 0000000..763f48b
--- /dev/null
+++ b/Tests/RunCMake/LinkLibrariesProcessing/RunCMakeTest.cmake
@@ -0,0 +1,8 @@
+include(RunCMake)
+
+run_cmake(Invalid_ORDER)
+run_cmake(Invalid_UNICITY)
+run_cmake(InvalidConfiguration1)
+run_cmake(InvalidConfiguration2)
+run_cmake(InvalidConfiguration3)
+run_cmake(InvalidConfiguration4)
diff --git a/Tests/RunCMake/LinkLibrariesProcessing/lib.c b/Tests/RunCMake/LinkLibrariesProcessing/lib.c
new file mode 100644
index 0000000..17a4148
--- /dev/null
+++ b/Tests/RunCMake/LinkLibrariesProcessing/lib.c
@@ -0,0 +1,4 @@
+
+void lib(void)
+{
+}
diff --git a/Tests/RunCMake/LinkLibrariesProcessing/main.c b/Tests/RunCMake/LinkLibrariesProcessing/main.c
new file mode 100644
index 0000000..402eac3
--- /dev/null
+++ b/Tests/RunCMake/LinkLibrariesProcessing/main.c
@@ -0,0 +1,5 @@
+
+int main(void)
+{
+  return 0;
+}
diff --git a/Tests/RunCMake/TargetPolicies/PolicyList-stderr.txt b/Tests/RunCMake/TargetPolicies/PolicyList-stderr.txt
index c2187ae..389a63e 100644
--- a/Tests/RunCMake/TargetPolicies/PolicyList-stderr.txt
+++ b/Tests/RunCMake/TargetPolicies/PolicyList-stderr.txt
@@ -39,6 +39,7 @@
    \* CMP0142
    \* CMP0154
    \* CMP0155
+   \* CMP0156
 
 Call Stack \(most recent call first\):
   CMakeLists.txt:3 \(include\)
diff --git a/Tests/RunCMake/target_link_libraries-LINK_LIBRARY/LINK_LIBRARY-nested-feature1-check.cmake b/Tests/RunCMake/target_link_libraries-LINK_LIBRARY/LINK_LIBRARY-CMP0156-NEW-group1-check.cmake
index 255c9a6..255c9a6 100644
--- a/Tests/RunCMake/target_link_libraries-LINK_LIBRARY/LINK_LIBRARY-nested-feature1-check.cmake
+++ b/Tests/RunCMake/target_link_libraries-LINK_LIBRARY/LINK_LIBRARY-CMP0156-NEW-group1-check.cmake
diff --git a/Tests/RunCMake/target_link_libraries-LINK_LIBRARY/LINK_LIBRARY-simple2-result.txt b/Tests/RunCMake/target_link_libraries-LINK_LIBRARY/LINK_LIBRARY-CMP0156-NEW-group1-result.txt
index 8d98f9d..8d98f9d 100644
--- a/Tests/RunCMake/target_link_libraries-LINK_LIBRARY/LINK_LIBRARY-simple2-result.txt
+++ b/Tests/RunCMake/target_link_libraries-LINK_LIBRARY/LINK_LIBRARY-CMP0156-NEW-group1-result.txt
diff --git a/Tests/RunCMake/target_link_libraries-LINK_LIBRARY/LINK_LIBRARY-nested-feature2-check.cmake b/Tests/RunCMake/target_link_libraries-LINK_LIBRARY/LINK_LIBRARY-CMP0156-NEW-group2-check.cmake
index a8e0da7..a8e0da7 100644
--- a/Tests/RunCMake/target_link_libraries-LINK_LIBRARY/LINK_LIBRARY-nested-feature2-check.cmake
+++ b/Tests/RunCMake/target_link_libraries-LINK_LIBRARY/LINK_LIBRARY-CMP0156-NEW-group2-check.cmake
diff --git a/Tests/RunCMake/target_link_libraries-LINK_LIBRARY/LINK_LIBRARY-simple1-result.txt b/Tests/RunCMake/target_link_libraries-LINK_LIBRARY/LINK_LIBRARY-CMP0156-NEW-group2-result.txt
index 8d98f9d..8d98f9d 100644
--- a/Tests/RunCMake/target_link_libraries-LINK_LIBRARY/LINK_LIBRARY-simple1-result.txt
+++ b/Tests/RunCMake/target_link_libraries-LINK_LIBRARY/LINK_LIBRARY-CMP0156-NEW-group2-result.txt
diff --git a/Tests/RunCMake/target_link_libraries-LINK_LIBRARY/LINK_LIBRARY-link-items1-check.cmake b/Tests/RunCMake/target_link_libraries-LINK_LIBRARY/LINK_LIBRARY-CMP0156-NEW-link-items1-check.cmake
index 54cef2c..54cef2c 100644
--- a/Tests/RunCMake/target_link_libraries-LINK_LIBRARY/LINK_LIBRARY-link-items1-check.cmake
+++ b/Tests/RunCMake/target_link_libraries-LINK_LIBRARY/LINK_LIBRARY-CMP0156-NEW-link-items1-check.cmake
diff --git a/Tests/RunCMake/target_link_libraries-LINK_LIBRARY/LINK_LIBRARY-override-with-DEFAULT-result.txt b/Tests/RunCMake/target_link_libraries-LINK_LIBRARY/LINK_LIBRARY-CMP0156-NEW-link-items1-result.txt
index 8d98f9d..8d98f9d 100644
--- a/Tests/RunCMake/target_link_libraries-LINK_LIBRARY/LINK_LIBRARY-override-with-DEFAULT-result.txt
+++ b/Tests/RunCMake/target_link_libraries-LINK_LIBRARY/LINK_LIBRARY-CMP0156-NEW-link-items1-result.txt
diff --git a/Tests/RunCMake/target_link_libraries-LINK_LIBRARY/LINK_LIBRARY-link-items2-check.cmake b/Tests/RunCMake/target_link_libraries-LINK_LIBRARY/LINK_LIBRARY-CMP0156-NEW-link-items2-check.cmake
index 7c38134..7c38134 100644
--- a/Tests/RunCMake/target_link_libraries-LINK_LIBRARY/LINK_LIBRARY-link-items2-check.cmake
+++ b/Tests/RunCMake/target_link_libraries-LINK_LIBRARY/LINK_LIBRARY-CMP0156-NEW-link-items2-check.cmake
diff --git a/Tests/RunCMake/target_link_libraries-LINK_LIBRARY/LINK_LIBRARY-override-features4-result.txt b/Tests/RunCMake/target_link_libraries-LINK_LIBRARY/LINK_LIBRARY-CMP0156-NEW-link-items2-result.txt
index 8d98f9d..8d98f9d 100644
--- a/Tests/RunCMake/target_link_libraries-LINK_LIBRARY/LINK_LIBRARY-override-features4-result.txt
+++ b/Tests/RunCMake/target_link_libraries-LINK_LIBRARY/LINK_LIBRARY-CMP0156-NEW-link-items2-result.txt
diff --git a/Tests/RunCMake/target_link_libraries-LINK_LIBRARY/LINK_LIBRARY-link-items3-check.cmake b/Tests/RunCMake/target_link_libraries-LINK_LIBRARY/LINK_LIBRARY-CMP0156-NEW-link-items3-check.cmake
index 88b5cf6..88b5cf6 100644
--- a/Tests/RunCMake/target_link_libraries-LINK_LIBRARY/LINK_LIBRARY-link-items3-check.cmake
+++ b/Tests/RunCMake/target_link_libraries-LINK_LIBRARY/LINK_LIBRARY-CMP0156-NEW-link-items3-check.cmake
diff --git a/Tests/RunCMake/target_link_libraries-LINK_LIBRARY/LINK_LIBRARY-override-features3-result.txt b/Tests/RunCMake/target_link_libraries-LINK_LIBRARY/LINK_LIBRARY-CMP0156-NEW-link-items3-result.txt
index 8d98f9d..8d98f9d 100644
--- a/Tests/RunCMake/target_link_libraries-LINK_LIBRARY/LINK_LIBRARY-override-features3-result.txt
+++ b/Tests/RunCMake/target_link_libraries-LINK_LIBRARY/LINK_LIBRARY-CMP0156-NEW-link-items3-result.txt
diff --git a/Tests/RunCMake/target_link_libraries-LINK_LIBRARY/LINK_LIBRARY-link-items4-check.cmake b/Tests/RunCMake/target_link_libraries-LINK_LIBRARY/LINK_LIBRARY-CMP0156-NEW-link-items4-check.cmake
index c473637..c473637 100644
--- a/Tests/RunCMake/target_link_libraries-LINK_LIBRARY/LINK_LIBRARY-link-items4-check.cmake
+++ b/Tests/RunCMake/target_link_libraries-LINK_LIBRARY/LINK_LIBRARY-CMP0156-NEW-link-items4-check.cmake
diff --git a/Tests/RunCMake/target_link_libraries-LINK_LIBRARY/LINK_LIBRARY-override-features2-result.txt b/Tests/RunCMake/target_link_libraries-LINK_LIBRARY/LINK_LIBRARY-CMP0156-NEW-link-items4-result.txt
index 8d98f9d..8d98f9d 100644
--- a/Tests/RunCMake/target_link_libraries-LINK_LIBRARY/LINK_LIBRARY-override-features2-result.txt
+++ b/Tests/RunCMake/target_link_libraries-LINK_LIBRARY/LINK_LIBRARY-CMP0156-NEW-link-items4-result.txt
diff --git a/Tests/RunCMake/target_link_libraries-LINK_LIBRARY/LINK_LIBRARY-CMP0156-NEW-mix-features1-check.cmake b/Tests/RunCMake/target_link_libraries-LINK_LIBRARY/LINK_LIBRARY-CMP0156-NEW-mix-features1-check.cmake
new file mode 100644
index 0000000..eb1f755
--- /dev/null
+++ b/Tests/RunCMake/target_link_libraries-LINK_LIBRARY/LINK_LIBRARY-CMP0156-NEW-mix-features1-check.cmake
@@ -0,0 +1,12 @@
+
+include("${RunCMake_BINARY_DIR}/LINK_LIBRARY-CMP0156-NEW-build/LIBRARIES_PROCESSING.cmake")
+
+if (CMAKE_C_LINK_LIBRARIES_PROCESSING MATCHES "ORDER=FORWARD")
+  if (NOT actual_stdout MATCHES "(/|-)-PREFIXGROUP\"? +\"?(/|-)-LIBGROUP.*${LINK_SHARED_LIBRARY_PREFIX}base1${LINK_SHARED_LIBRARY_SUFFIX}\"? +\"?(/|-)-LIBGROUP.*${LINK_SHARED_LIBRARY_PREFIX}base3${LINK_SHARED_LIBRARY_SUFFIX}\"? +\"?(/|-)-SUFFIXGROUP")
+    set (RunCMake_TEST_FAILED "Not found expected '--PREFIXGROUP --LIBGROUP<base1> --LIBGROUP<base3> --SUFFIXGROUP'.")
+  endif()
+else()
+  if (NOT actual_stdout MATCHES "(/|-)-PREFIXGROUP\"? +\"?(/|-)-LIBGROUP.*${LINK_SHARED_LIBRARY_PREFIX}base3${LINK_SHARED_LIBRARY_SUFFIX}\"? +\"?(/|-)-LIBGROUP.*${LINK_SHARED_LIBRARY_PREFIX}base1${LINK_SHARED_LIBRARY_SUFFIX}\"? +\"?(/|-)-SUFFIXGROUP")
+    set (RunCMake_TEST_FAILED "Not found expected '--PREFIXGROUP --LIBGROUP<base3> --LIBGROUP<base1> --SUFFIXGROUP'.")
+  endif()
+endif()
diff --git a/Tests/RunCMake/target_link_libraries-LINK_LIBRARY/LINK_LIBRARY-override-features1-result.txt b/Tests/RunCMake/target_link_libraries-LINK_LIBRARY/LINK_LIBRARY-CMP0156-NEW-mix-features1-result.txt
index 8d98f9d..8d98f9d 100644
--- a/Tests/RunCMake/target_link_libraries-LINK_LIBRARY/LINK_LIBRARY-override-features1-result.txt
+++ b/Tests/RunCMake/target_link_libraries-LINK_LIBRARY/LINK_LIBRARY-CMP0156-NEW-mix-features1-result.txt
diff --git a/Tests/RunCMake/target_link_libraries-LINK_LIBRARY/LINK_LIBRARY-CMP0156-NEW-mix-features2-check.cmake b/Tests/RunCMake/target_link_libraries-LINK_LIBRARY/LINK_LIBRARY-CMP0156-NEW-mix-features2-check.cmake
new file mode 100644
index 0000000..eb1f755
--- /dev/null
+++ b/Tests/RunCMake/target_link_libraries-LINK_LIBRARY/LINK_LIBRARY-CMP0156-NEW-mix-features2-check.cmake
@@ -0,0 +1,12 @@
+
+include("${RunCMake_BINARY_DIR}/LINK_LIBRARY-CMP0156-NEW-build/LIBRARIES_PROCESSING.cmake")
+
+if (CMAKE_C_LINK_LIBRARIES_PROCESSING MATCHES "ORDER=FORWARD")
+  if (NOT actual_stdout MATCHES "(/|-)-PREFIXGROUP\"? +\"?(/|-)-LIBGROUP.*${LINK_SHARED_LIBRARY_PREFIX}base1${LINK_SHARED_LIBRARY_SUFFIX}\"? +\"?(/|-)-LIBGROUP.*${LINK_SHARED_LIBRARY_PREFIX}base3${LINK_SHARED_LIBRARY_SUFFIX}\"? +\"?(/|-)-SUFFIXGROUP")
+    set (RunCMake_TEST_FAILED "Not found expected '--PREFIXGROUP --LIBGROUP<base1> --LIBGROUP<base3> --SUFFIXGROUP'.")
+  endif()
+else()
+  if (NOT actual_stdout MATCHES "(/|-)-PREFIXGROUP\"? +\"?(/|-)-LIBGROUP.*${LINK_SHARED_LIBRARY_PREFIX}base3${LINK_SHARED_LIBRARY_SUFFIX}\"? +\"?(/|-)-LIBGROUP.*${LINK_SHARED_LIBRARY_PREFIX}base1${LINK_SHARED_LIBRARY_SUFFIX}\"? +\"?(/|-)-SUFFIXGROUP")
+    set (RunCMake_TEST_FAILED "Not found expected '--PREFIXGROUP --LIBGROUP<base3> --LIBGROUP<base1> --SUFFIXGROUP'.")
+  endif()
+endif()
diff --git a/Tests/RunCMake/target_link_libraries-LINK_LIBRARY/LINK_LIBRARY-nested-feature2-result.txt b/Tests/RunCMake/target_link_libraries-LINK_LIBRARY/LINK_LIBRARY-CMP0156-NEW-mix-features2-result.txt
index 8d98f9d..8d98f9d 100644
--- a/Tests/RunCMake/target_link_libraries-LINK_LIBRARY/LINK_LIBRARY-nested-feature2-result.txt
+++ b/Tests/RunCMake/target_link_libraries-LINK_LIBRARY/LINK_LIBRARY-CMP0156-NEW-mix-features2-result.txt
diff --git a/Tests/RunCMake/target_link_libraries-LINK_LIBRARY/LINK_LIBRARY-CMP0156-NEW-mix-features3-check.cmake b/Tests/RunCMake/target_link_libraries-LINK_LIBRARY/LINK_LIBRARY-CMP0156-NEW-mix-features3-check.cmake
new file mode 100644
index 0000000..783bad9
--- /dev/null
+++ b/Tests/RunCMake/target_link_libraries-LINK_LIBRARY/LINK_LIBRARY-CMP0156-NEW-mix-features3-check.cmake
@@ -0,0 +1,12 @@
+
+include("${RunCMake_BINARY_DIR}/LINK_LIBRARY-CMP0156-NEW-build/LIBRARIES_PROCESSING.cmake")
+
+if (CMAKE_C_LINK_LIBRARIES_PROCESSING MATCHES "ORDER=FORWARD")
+  if (NOT actual_stdout MATCHES "${LINK_SHARED_LIBRARY_PREFIX}base2${LINK_SHARED_LIBRARY_SUFFIX}\"? +\"?(/|-)-PREFIXGROUP\"? +\"?(/|-)-LIBGROUP.*${LINK_SHARED_LIBRARY_PREFIX}base1${LINK_SHARED_LIBRARY_SUFFIX}\"? +\"?(/|-)-LIBGROUP.*${LINK_SHARED_LIBRARY_PREFIX}base3${LINK_SHARED_LIBRARY_SUFFIX}\"? +\"?(/|-)-SUFFIXGROUP\"? +\"?${CMAKE_LINK_LIBRARY_FLAG}other2${LINK_EXTERN_LIBRARY_SUFFIX}\"? +\"?${CMAKE_LINK_LIBRARY_FLAG}other1${LINK_EXTERN_LIBRARY_SUFFIX}")
+    set (RunCMake_TEST_FAILED "Not found expected '<base2> --PREFIXGROUP --LIBGROUP<base1> --LIBGROUP<base3> --SUFFIXGROUP <other2> <other1>'.")
+  endif()
+else()
+  if (NOT actual_stdout MATCHES "${LINK_SHARED_LIBRARY_PREFIX}base2${LINK_SHARED_LIBRARY_SUFFIX}\"? +\"?(/|-)-PREFIXGROUP\"? +\"?(/|-)-LIBGROUP.*${LINK_SHARED_LIBRARY_PREFIX}base3${LINK_SHARED_LIBRARY_SUFFIX}\"? +\"?(/|-)-SUFFIXGROUP\"? +\"?${CMAKE_LINK_LIBRARY_FLAG}other2${LINK_EXTERN_LIBRARY_SUFFIX}\"? +\"?(/|-)-PREFIXGROUP\"? +\"?(/|-)-LIBGROUP.*${LINK_SHARED_LIBRARY_PREFIX}base1${LINK_SHARED_LIBRARY_SUFFIX}\"? +\"?(/|-)-SUFFIXGROUP\"? +\"?${CMAKE_LINK_LIBRARY_FLAG}other1${LINK_EXTERN_LIBRARY_SUFFIX}")
+    set (RunCMake_TEST_FAILED "Not found expected '<base2> --PREFIXGROUP --LIBGROUP<base3> --SUFFIXGROUP <other2> --PREFIXGROUP --LIBGROUP<base1> --SUFFIXGROUP <other1>'.")
+  endif()
+endif()
diff --git a/Tests/RunCMake/target_link_libraries-LINK_LIBRARY/LINK_LIBRARY-nested-feature1-result.txt b/Tests/RunCMake/target_link_libraries-LINK_LIBRARY/LINK_LIBRARY-CMP0156-NEW-mix-features3-result.txt
index 8d98f9d..8d98f9d 100644
--- a/Tests/RunCMake/target_link_libraries-LINK_LIBRARY/LINK_LIBRARY-nested-feature1-result.txt
+++ b/Tests/RunCMake/target_link_libraries-LINK_LIBRARY/LINK_LIBRARY-CMP0156-NEW-mix-features3-result.txt
diff --git a/Tests/RunCMake/target_link_libraries-LINK_LIBRARY/LINK_LIBRARY-group1-check.cmake b/Tests/RunCMake/target_link_libraries-LINK_LIBRARY/LINK_LIBRARY-CMP0156-NEW-nested-feature1-check.cmake
index 255c9a6..255c9a6 100644
--- a/Tests/RunCMake/target_link_libraries-LINK_LIBRARY/LINK_LIBRARY-group1-check.cmake
+++ b/Tests/RunCMake/target_link_libraries-LINK_LIBRARY/LINK_LIBRARY-CMP0156-NEW-nested-feature1-check.cmake
diff --git a/Tests/RunCMake/target_link_libraries-LINK_LIBRARY/LINK_LIBRARY-mix-features3-result.txt b/Tests/RunCMake/target_link_libraries-LINK_LIBRARY/LINK_LIBRARY-CMP0156-NEW-nested-feature1-result.txt
index 8d98f9d..8d98f9d 100644
--- a/Tests/RunCMake/target_link_libraries-LINK_LIBRARY/LINK_LIBRARY-mix-features3-result.txt
+++ b/Tests/RunCMake/target_link_libraries-LINK_LIBRARY/LINK_LIBRARY-CMP0156-NEW-nested-feature1-result.txt
diff --git a/Tests/RunCMake/target_link_libraries-LINK_LIBRARY/LINK_LIBRARY-group2-check.cmake b/Tests/RunCMake/target_link_libraries-LINK_LIBRARY/LINK_LIBRARY-CMP0156-NEW-nested-feature2-check.cmake
index a8e0da7..a8e0da7 100644
--- a/Tests/RunCMake/target_link_libraries-LINK_LIBRARY/LINK_LIBRARY-group2-check.cmake
+++ b/Tests/RunCMake/target_link_libraries-LINK_LIBRARY/LINK_LIBRARY-CMP0156-NEW-nested-feature2-check.cmake
diff --git a/Tests/RunCMake/target_link_libraries-LINK_LIBRARY/LINK_LIBRARY-mix-features2-result.txt b/Tests/RunCMake/target_link_libraries-LINK_LIBRARY/LINK_LIBRARY-CMP0156-NEW-nested-feature2-result.txt
index 8d98f9d..8d98f9d 100644
--- a/Tests/RunCMake/target_link_libraries-LINK_LIBRARY/LINK_LIBRARY-mix-features2-result.txt
+++ b/Tests/RunCMake/target_link_libraries-LINK_LIBRARY/LINK_LIBRARY-CMP0156-NEW-nested-feature2-result.txt
diff --git a/Tests/RunCMake/target_link_libraries-LINK_LIBRARY/LINK_LIBRARY-CMP0156-NEW-override-features1-check.cmake b/Tests/RunCMake/target_link_libraries-LINK_LIBRARY/LINK_LIBRARY-CMP0156-NEW-override-features1-check.cmake
new file mode 100644
index 0000000..ce72570
--- /dev/null
+++ b/Tests/RunCMake/target_link_libraries-LINK_LIBRARY/LINK_LIBRARY-CMP0156-NEW-override-features1-check.cmake
@@ -0,0 +1,12 @@
+
+include("${RunCMake_BINARY_DIR}/LINK_LIBRARY-CMP0156-NEW-build/LIBRARIES_PROCESSING.cmake")
+
+if (CMAKE_C_LINK_LIBRARIES_PROCESSING MATCHES "ORDER=FORWARD")
+  if (NOT actual_stdout MATCHES "(/|-)-LIBFLAG.*${LINK_SHARED_LIBRARY_PREFIX}base1${LINK_SHARED_LIBRARY_SUFFIX}\"? +\"?(/|-)-LIBFLAG.*${LINK_SHARED_LIBRARY_PREFIX}base3${LINK_SHARED_LIBRARY_SUFFIX}\"? +\"?${CMAKE_LINK_LIBRARY_FLAG}other1")
+    set (RunCMake_TEST_FAILED "Not found expected '--LIBFLAG<base1> --LIBFLAG<base3> <other1>'.")
+  endif()
+else()
+  if (NOT actual_stdout MATCHES "(/|-)-LIBFLAG.*${LINK_SHARED_LIBRARY_PREFIX}base3${LINK_SHARED_LIBRARY_SUFFIX}\"? +\"?(/|-)-LIBFLAG.*${LINK_SHARED_LIBRARY_PREFIX}base1${LINK_SHARED_LIBRARY_SUFFIX}\"? +\"?${CMAKE_LINK_LIBRARY_FLAG}other1")
+    set (RunCMake_TEST_FAILED "Not found expected '--LIBFLAG<base3> --LIBFLAG<base1> <other1>'.")
+  endif()
+endif()
diff --git a/Tests/RunCMake/target_link_libraries-LINK_LIBRARY/LINK_LIBRARY-mix-features1-result.txt b/Tests/RunCMake/target_link_libraries-LINK_LIBRARY/LINK_LIBRARY-CMP0156-NEW-override-features1-result.txt
index 8d98f9d..8d98f9d 100644
--- a/Tests/RunCMake/target_link_libraries-LINK_LIBRARY/LINK_LIBRARY-mix-features1-result.txt
+++ b/Tests/RunCMake/target_link_libraries-LINK_LIBRARY/LINK_LIBRARY-CMP0156-NEW-override-features1-result.txt
diff --git a/Tests/RunCMake/target_link_libraries-LINK_LIBRARY/LINK_LIBRARY-CMP0156-NEW-override-features2-check.cmake b/Tests/RunCMake/target_link_libraries-LINK_LIBRARY/LINK_LIBRARY-CMP0156-NEW-override-features2-check.cmake
new file mode 100644
index 0000000..817b6e2
--- /dev/null
+++ b/Tests/RunCMake/target_link_libraries-LINK_LIBRARY/LINK_LIBRARY-CMP0156-NEW-override-features2-check.cmake
@@ -0,0 +1,12 @@
+
+include("${RunCMake_BINARY_DIR}/LINK_LIBRARY-CMP0156-NEW-build/LIBRARIES_PROCESSING.cmake")
+
+if (CMAKE_C_LINK_LIBRARIES_PROCESSING MATCHES "ORDER=FORWARD")
+  if (NOT actual_stdout MATCHES "(/|-)-PREFIXGROUP\"? +\"?(/|-)-LIBGROUP.*${LINK_SHARED_LIBRARY_PREFIX}base1${LINK_SHARED_LIBRARY_SUFFIX}\"? +\"?(/|-)-SUFFIXGROUP\"? +\"?(/|-)-LIBFLAG.*${LINK_SHARED_LIBRARY_PREFIX}base3${LINK_SHARED_LIBRARY_SUFFIX}\"? +\"?(/|-)-PREFIXGROUP\"? +\"?(/|-)-LIBGROUP.*${LINK_SHARED_LIBRARY_PREFIX}other1${LINK_SHARED_LIBRARY_SUFFIX}\"? +\"?(/|-)-SUFFIXGROUP")
+    set (RunCMake_TEST_FAILED "Not found expected '--PREFIXGROUP --LIBGROUP<base1> --SUFFIXGROUP --LIBFLAG<base3> --PREFIXGROUP --LIBGROUP<other1> --SUFFIXGROUP'.")
+  endif()
+else()
+  if (NOT actual_stdout MATCHES "(/|-)-LIBFLAG.*${LINK_SHARED_LIBRARY_PREFIX}base3${LINK_SHARED_LIBRARY_SUFFIX}\"? +\"?(/|-)-PREFIXGROUP\"? +\"?(/|-)-LIBGROUP.*${LINK_SHARED_LIBRARY_PREFIX}base1${LINK_SHARED_LIBRARY_SUFFIX}\"? +\"?(/|-)-LIBGROUPother1${LINK_EXTERN_LIBRARY_SUFFIX}\"? +\"?(/|-)-SUFFIXGROUP")
+    set (RunCMake_TEST_FAILED "Not found expected '--LIBFLAG<base3> --PREFIXGROUP --LIBGROUP<base1> --LIBGROUP<other1> --SUFFIXGROUP'.")
+  endif()
+endif()
diff --git a/Tests/RunCMake/target_link_libraries-LINK_LIBRARY/LINK_LIBRARY-link-items4-result.txt b/Tests/RunCMake/target_link_libraries-LINK_LIBRARY/LINK_LIBRARY-CMP0156-NEW-override-features2-result.txt
index 8d98f9d..8d98f9d 100644
--- a/Tests/RunCMake/target_link_libraries-LINK_LIBRARY/LINK_LIBRARY-link-items4-result.txt
+++ b/Tests/RunCMake/target_link_libraries-LINK_LIBRARY/LINK_LIBRARY-CMP0156-NEW-override-features2-result.txt
diff --git a/Tests/RunCMake/target_link_libraries-LINK_LIBRARY/LINK_LIBRARY-CMP0156-NEW-override-features3-check.cmake b/Tests/RunCMake/target_link_libraries-LINK_LIBRARY/LINK_LIBRARY-CMP0156-NEW-override-features3-check.cmake
new file mode 100644
index 0000000..ce72570
--- /dev/null
+++ b/Tests/RunCMake/target_link_libraries-LINK_LIBRARY/LINK_LIBRARY-CMP0156-NEW-override-features3-check.cmake
@@ -0,0 +1,12 @@
+
+include("${RunCMake_BINARY_DIR}/LINK_LIBRARY-CMP0156-NEW-build/LIBRARIES_PROCESSING.cmake")
+
+if (CMAKE_C_LINK_LIBRARIES_PROCESSING MATCHES "ORDER=FORWARD")
+  if (NOT actual_stdout MATCHES "(/|-)-LIBFLAG.*${LINK_SHARED_LIBRARY_PREFIX}base1${LINK_SHARED_LIBRARY_SUFFIX}\"? +\"?(/|-)-LIBFLAG.*${LINK_SHARED_LIBRARY_PREFIX}base3${LINK_SHARED_LIBRARY_SUFFIX}\"? +\"?${CMAKE_LINK_LIBRARY_FLAG}other1")
+    set (RunCMake_TEST_FAILED "Not found expected '--LIBFLAG<base1> --LIBFLAG<base3> <other1>'.")
+  endif()
+else()
+  if (NOT actual_stdout MATCHES "(/|-)-LIBFLAG.*${LINK_SHARED_LIBRARY_PREFIX}base3${LINK_SHARED_LIBRARY_SUFFIX}\"? +\"?(/|-)-LIBFLAG.*${LINK_SHARED_LIBRARY_PREFIX}base1${LINK_SHARED_LIBRARY_SUFFIX}\"? +\"?${CMAKE_LINK_LIBRARY_FLAG}other1")
+    set (RunCMake_TEST_FAILED "Not found expected '--LIBFLAG<base3> --LIBFLAG<base1> <other1>'.")
+  endif()
+endif()
diff --git a/Tests/RunCMake/target_link_libraries-LINK_LIBRARY/LINK_LIBRARY-link-items3-result.txt b/Tests/RunCMake/target_link_libraries-LINK_LIBRARY/LINK_LIBRARY-CMP0156-NEW-override-features3-result.txt
index 8d98f9d..8d98f9d 100644
--- a/Tests/RunCMake/target_link_libraries-LINK_LIBRARY/LINK_LIBRARY-link-items3-result.txt
+++ b/Tests/RunCMake/target_link_libraries-LINK_LIBRARY/LINK_LIBRARY-CMP0156-NEW-override-features3-result.txt
diff --git a/Tests/RunCMake/target_link_libraries-LINK_LIBRARY/LINK_LIBRARY-CMP0156-NEW-override-features4-check.cmake b/Tests/RunCMake/target_link_libraries-LINK_LIBRARY/LINK_LIBRARY-CMP0156-NEW-override-features4-check.cmake
new file mode 100644
index 0000000..700bcf2
--- /dev/null
+++ b/Tests/RunCMake/target_link_libraries-LINK_LIBRARY/LINK_LIBRARY-CMP0156-NEW-override-features4-check.cmake
@@ -0,0 +1,12 @@
+
+include("${RunCMake_BINARY_DIR}/LINK_LIBRARY-CMP0156-NEW-build/LIBRARIES_PROCESSING.cmake")
+
+if (CMAKE_C_LINK_LIBRARIES_PROCESSING MATCHES "ORDER=FORWARD")
+  if (NOT actual_stdout MATCHES "(/|-)-PREFIXGROUP\"? +\"?(/|-)-LIBGROUP.*${LINK_SHARED_LIBRARY_PREFIX}base1${LINK_SHARED_LIBRARY_SUFFIX}\"? +\"?(/|-)-SUFFIXGROUP\"? +\"?(/|-)-LIBFLAG.*${LINK_SHARED_LIBRARY_PREFIX}base3${LINK_SHARED_LIBRARY_SUFFIX}\"? +\"?(/|-)-PREFIXGROUP\"? +\"?(/|-)-LIBGROUPother1${LINK_EXTERN_LIBRARY_SUFFIX}\"? +\"?(/|-)-SUFFIXGROUP\"?")
+    set (RunCMake_TEST_FAILED "Not found expected '--PREFIXGROUP --LIBGROUP<base1> --SUFFIXGROUP --LIBFLAG<base3> --PREFIXGROUP --LIBGROUP<other1> --SUFFIXGROUP'.")
+  endif()
+else()
+  if (NOT actual_stdout MATCHES "(/|-)-LIBFLAG.*${LINK_SHARED_LIBRARY_PREFIX}base3${LINK_SHARED_LIBRARY_SUFFIX}\"? +\"?(/|-)-PREFIXGROUP\"? +\"?(/|-)-LIBGROUP.*${LINK_SHARED_LIBRARY_PREFIX}base1${LINK_SHARED_LIBRARY_SUFFIX}\"? +\"?(/|-)-LIBGROUPother1${LINK_EXTERN_LIBRARY_SUFFIX}\"? +\"?(/|-)-SUFFIXGROUP")
+    set (RunCMake_TEST_FAILED "Not found expected '--LIBFLAG<base3> --PREFIXGROUP --LIBGROUP<base1> --LIBGROUP<other1> --SUFFIXGROUP'.")
+  endif()
+endif()
diff --git a/Tests/RunCMake/target_link_libraries-LINK_LIBRARY/LINK_LIBRARY-link-items2-result.txt b/Tests/RunCMake/target_link_libraries-LINK_LIBRARY/LINK_LIBRARY-CMP0156-NEW-override-features4-result.txt
index 8d98f9d..8d98f9d 100644
--- a/Tests/RunCMake/target_link_libraries-LINK_LIBRARY/LINK_LIBRARY-link-items2-result.txt
+++ b/Tests/RunCMake/target_link_libraries-LINK_LIBRARY/LINK_LIBRARY-CMP0156-NEW-override-features4-result.txt
diff --git a/Tests/RunCMake/target_link_libraries-LINK_LIBRARY/LINK_LIBRARY-CMP0156-NEW-override-with-DEFAULT-check.cmake b/Tests/RunCMake/target_link_libraries-LINK_LIBRARY/LINK_LIBRARY-CMP0156-NEW-override-with-DEFAULT-check.cmake
new file mode 100644
index 0000000..3a44bc0
--- /dev/null
+++ b/Tests/RunCMake/target_link_libraries-LINK_LIBRARY/LINK_LIBRARY-CMP0156-NEW-override-with-DEFAULT-check.cmake
@@ -0,0 +1,12 @@
+
+include("${RunCMake_BINARY_DIR}/LINK_LIBRARY-CMP0156-NEW-build/LIBRARIES_PROCESSING.cmake")
+
+if (CMAKE_C_LINK_LIBRARIES_PROCESSING MATCHES "ORDER=FORWARD")
+  if (NOT actual_stdout MATCHES "${LINK_SHARED_LIBRARY_PREFIX}base1${LINK_SHARED_LIBRARY_SUFFIX}\"? +\"?(/|-)-LIBFLAG.*${LINK_SHARED_LIBRARY_PREFIX}base3${LINK_SHARED_LIBRARY_SUFFIX}\"? +\"?${CMAKE_LINK_LIBRARY_FLAG}other1${LINK_EXTERN_LIBRARY_SUFFIX}\"?")
+    set (RunCMake_TEST_FAILED "Not found expected '<base1> --LIBFLAG<base3> <other1>'.")
+  endif()
+else()
+  if (NOT actual_stdout MATCHES "(/|-)-LIBFLAG.*${LINK_SHARED_LIBRARY_PREFIX}base3${LINK_SHARED_LIBRARY_SUFFIX}\"? +\"?.*${LINK_SHARED_LIBRARY_PREFIX}base1${LINK_SHARED_LIBRARY_SUFFIX}\"? +\"?${CMAKE_LINK_LIBRARY_FLAG}other1${LINK_EXTERN_LIBRARY_SUFFIX}\"?")
+    set (RunCMake_TEST_FAILED "Not found expected '--LIBFLAG<base3> <base1> <other1>'.")
+  endif()
+endif()
diff --git a/Tests/RunCMake/target_link_libraries-LINK_LIBRARY/LINK_LIBRARY-link-items1-result.txt b/Tests/RunCMake/target_link_libraries-LINK_LIBRARY/LINK_LIBRARY-CMP0156-NEW-override-with-DEFAULT-result.txt
index 8d98f9d..8d98f9d 100644
--- a/Tests/RunCMake/target_link_libraries-LINK_LIBRARY/LINK_LIBRARY-link-items1-result.txt
+++ b/Tests/RunCMake/target_link_libraries-LINK_LIBRARY/LINK_LIBRARY-CMP0156-NEW-override-with-DEFAULT-result.txt
diff --git a/Tests/RunCMake/target_link_libraries-LINK_LIBRARY/LINK_LIBRARY-simple2-check.cmake b/Tests/RunCMake/target_link_libraries-LINK_LIBRARY/LINK_LIBRARY-CMP0156-NEW-simple1-check.cmake
index 32b58fe..32b58fe 100644
--- a/Tests/RunCMake/target_link_libraries-LINK_LIBRARY/LINK_LIBRARY-simple2-check.cmake
+++ b/Tests/RunCMake/target_link_libraries-LINK_LIBRARY/LINK_LIBRARY-CMP0156-NEW-simple1-check.cmake
diff --git a/Tests/RunCMake/target_link_libraries-LINK_LIBRARY/LINK_LIBRARY-group2-result.txt b/Tests/RunCMake/target_link_libraries-LINK_LIBRARY/LINK_LIBRARY-CMP0156-NEW-simple1-result.txt
index 8d98f9d..8d98f9d 100644
--- a/Tests/RunCMake/target_link_libraries-LINK_LIBRARY/LINK_LIBRARY-group2-result.txt
+++ b/Tests/RunCMake/target_link_libraries-LINK_LIBRARY/LINK_LIBRARY-CMP0156-NEW-simple1-result.txt
diff --git a/Tests/RunCMake/target_link_libraries-LINK_LIBRARY/LINK_LIBRARY-simple1-check.cmake b/Tests/RunCMake/target_link_libraries-LINK_LIBRARY/LINK_LIBRARY-CMP0156-NEW-simple2-check.cmake
index 32b58fe..32b58fe 100644
--- a/Tests/RunCMake/target_link_libraries-LINK_LIBRARY/LINK_LIBRARY-simple1-check.cmake
+++ b/Tests/RunCMake/target_link_libraries-LINK_LIBRARY/LINK_LIBRARY-CMP0156-NEW-simple2-check.cmake
diff --git a/Tests/RunCMake/target_link_libraries-LINK_LIBRARY/LINK_LIBRARY-group1-result.txt b/Tests/RunCMake/target_link_libraries-LINK_LIBRARY/LINK_LIBRARY-CMP0156-NEW-simple2-result.txt
index 8d98f9d..8d98f9d 100644
--- a/Tests/RunCMake/target_link_libraries-LINK_LIBRARY/LINK_LIBRARY-group1-result.txt
+++ b/Tests/RunCMake/target_link_libraries-LINK_LIBRARY/LINK_LIBRARY-CMP0156-NEW-simple2-result.txt
diff --git a/Tests/RunCMake/target_link_libraries-LINK_LIBRARY/LINK_LIBRARY-CMP0156-OLD-group1-check.cmake b/Tests/RunCMake/target_link_libraries-LINK_LIBRARY/LINK_LIBRARY-CMP0156-OLD-group1-check.cmake
new file mode 100644
index 0000000..255c9a6
--- /dev/null
+++ b/Tests/RunCMake/target_link_libraries-LINK_LIBRARY/LINK_LIBRARY-CMP0156-OLD-group1-check.cmake
@@ -0,0 +1,4 @@
+
+if (NOT actual_stdout MATCHES "(/|-)-LIBFLAG.*${LINK_SHARED_LIBRARY_PREFIX}base1${LINK_SHARED_LIBRARY_SUFFIX}\"? +\"?(/|-)-LIBFLAG.*${LINK_SHARED_LIBRARY_PREFIX}base2${LINK_SHARED_LIBRARY_SUFFIX}")
+  set (RunCMake_TEST_FAILED "Not found expected '--LIBFLAG<base1> --LIBFLAG<base2>'.")
+endif()
diff --git a/Tests/RunCMake/target_link_libraries-LINK_LIBRARY/LINK_LIBRARY-CMP0156-OLD-group1-result.txt b/Tests/RunCMake/target_link_libraries-LINK_LIBRARY/LINK_LIBRARY-CMP0156-OLD-group1-result.txt
new file mode 100644
index 0000000..8d98f9d
--- /dev/null
+++ b/Tests/RunCMake/target_link_libraries-LINK_LIBRARY/LINK_LIBRARY-CMP0156-OLD-group1-result.txt
@@ -0,0 +1 @@
+.*
diff --git a/Tests/RunCMake/target_link_libraries-LINK_LIBRARY/LINK_LIBRARY-CMP0156-OLD-group2-check.cmake b/Tests/RunCMake/target_link_libraries-LINK_LIBRARY/LINK_LIBRARY-CMP0156-OLD-group2-check.cmake
new file mode 100644
index 0000000..a8e0da7
--- /dev/null
+++ b/Tests/RunCMake/target_link_libraries-LINK_LIBRARY/LINK_LIBRARY-CMP0156-OLD-group2-check.cmake
@@ -0,0 +1,4 @@
+
+if (NOT actual_stdout MATCHES "(/|-)-PREFIXGROUP\"? +\"?(/|-)-LIBGROUP.*${LINK_SHARED_LIBRARY_PREFIX}base1${LINK_SHARED_LIBRARY_SUFFIX}\"? +\"?(/|-)-LIBGROUP.*${LINK_SHARED_LIBRARY_PREFIX}base2${LINK_SHARED_LIBRARY_SUFFIX}\"? +\"?(/|-)-SUFFIXGROUP")
+  set (RunCMake_TEST_FAILED "Not found expected '--PREFIXGROUP --LIBGROUP<base1> --LIBGROUP<base2> --SUFFIXGROUP'.")
+endif()
diff --git a/Tests/RunCMake/target_link_libraries-LINK_LIBRARY/LINK_LIBRARY-CMP0156-OLD-group2-result.txt b/Tests/RunCMake/target_link_libraries-LINK_LIBRARY/LINK_LIBRARY-CMP0156-OLD-group2-result.txt
new file mode 100644
index 0000000..8d98f9d
--- /dev/null
+++ b/Tests/RunCMake/target_link_libraries-LINK_LIBRARY/LINK_LIBRARY-CMP0156-OLD-group2-result.txt
@@ -0,0 +1 @@
+.*
diff --git a/Tests/RunCMake/target_link_libraries-LINK_LIBRARY/LINK_LIBRARY-CMP0156-OLD-link-items1-check.cmake b/Tests/RunCMake/target_link_libraries-LINK_LIBRARY/LINK_LIBRARY-CMP0156-OLD-link-items1-check.cmake
new file mode 100644
index 0000000..54cef2c
--- /dev/null
+++ b/Tests/RunCMake/target_link_libraries-LINK_LIBRARY/LINK_LIBRARY-CMP0156-OLD-link-items1-check.cmake
@@ -0,0 +1,4 @@
+
+if (NOT actual_stdout MATCHES "(/|-)-PREFIXGROUP\"? +\"?.*${LINK_SHARED_LIBRARY_PREFIX}base1${LINK_SHARED_LIBRARY_SUFFIX}\"? +\"?${CMAKE_LINK_LIBRARY_FLAG}other${LINK_EXTERN_LIBRARY_SUFFIX}\"? +\"?(/|-)-SUFFIXGROUP")
+  set (RunCMake_TEST_FAILED "Not found expected '--PREFIXGROUP <base1> <other> --SUFFIXGROUP'.")
+endif()
diff --git a/Tests/RunCMake/target_link_libraries-LINK_LIBRARY/LINK_LIBRARY-CMP0156-OLD-link-items1-result.txt b/Tests/RunCMake/target_link_libraries-LINK_LIBRARY/LINK_LIBRARY-CMP0156-OLD-link-items1-result.txt
new file mode 100644
index 0000000..8d98f9d
--- /dev/null
+++ b/Tests/RunCMake/target_link_libraries-LINK_LIBRARY/LINK_LIBRARY-CMP0156-OLD-link-items1-result.txt
@@ -0,0 +1 @@
+.*
diff --git a/Tests/RunCMake/target_link_libraries-LINK_LIBRARY/LINK_LIBRARY-CMP0156-OLD-link-items2-check.cmake b/Tests/RunCMake/target_link_libraries-LINK_LIBRARY/LINK_LIBRARY-CMP0156-OLD-link-items2-check.cmake
new file mode 100644
index 0000000..7c38134
--- /dev/null
+++ b/Tests/RunCMake/target_link_libraries-LINK_LIBRARY/LINK_LIBRARY-CMP0156-OLD-link-items2-check.cmake
@@ -0,0 +1,4 @@
+
+if (NOT actual_stdout MATCHES "(/|-)-PREFIXGROUP\"? +\"?(/|-)-LIBGROUP.*${LINK_SHARED_LIBRARY_PREFIX}base1${LINK_SHARED_LIBRARY_SUFFIX}\"? +\"?(/|-)-LIBGROUPother${LINK_EXTERN_LIBRARY_SUFFIX}\"? +\"?(/|-)-SUFFIXGROUP")
+  set (RunCMake_TEST_FAILED "Not found expected '--PREFIXGROUP --LIBGROUP<base1> --LIBGROUP<other> --SUFFIXGROUP'.")
+endif()
diff --git a/Tests/RunCMake/target_link_libraries-LINK_LIBRARY/LINK_LIBRARY-CMP0156-OLD-link-items2-result.txt b/Tests/RunCMake/target_link_libraries-LINK_LIBRARY/LINK_LIBRARY-CMP0156-OLD-link-items2-result.txt
new file mode 100644
index 0000000..8d98f9d
--- /dev/null
+++ b/Tests/RunCMake/target_link_libraries-LINK_LIBRARY/LINK_LIBRARY-CMP0156-OLD-link-items2-result.txt
@@ -0,0 +1 @@
+.*
diff --git a/Tests/RunCMake/target_link_libraries-LINK_LIBRARY/LINK_LIBRARY-CMP0156-OLD-link-items3-check.cmake b/Tests/RunCMake/target_link_libraries-LINK_LIBRARY/LINK_LIBRARY-CMP0156-OLD-link-items3-check.cmake
new file mode 100644
index 0000000..88b5cf6
--- /dev/null
+++ b/Tests/RunCMake/target_link_libraries-LINK_LIBRARY/LINK_LIBRARY-CMP0156-OLD-link-items3-check.cmake
@@ -0,0 +1,4 @@
+
+if (NOT actual_stdout MATCHES "(/|-)-PREFIXGROUP\"? +\"?(/|-)-LIBFLAG.*${LINK_SHARED_LIBRARY_PREFIX}base1${LINK_SHARED_LIBRARY_SUFFIX}\"? +\"?(/|-)-ITEMFLAG.*${LINK_SHARED_LIBRARY_PREFIX}base1${LINK_SHARED_LIBRARY_SUFFIX}\"? +\"?(/|-)-LIBFLAGother${LINK_EXTERN_LIBRARY_SUFFIX}\"? +\"?(/|-)-ITEMFLAGother\"? +\"?(/|-)-SUFFIXGROUP")
+  set (RunCMake_TEST_FAILED "Not found expected '--PREFIXGROUP --LIBFLAG<base1> --ITEMFLAG<base1> --LIBFLAG<other> --ITEMFLAG<other> --SUFFIXGROUP'.")
+endif()
diff --git a/Tests/RunCMake/target_link_libraries-LINK_LIBRARY/LINK_LIBRARY-CMP0156-OLD-link-items3-result.txt b/Tests/RunCMake/target_link_libraries-LINK_LIBRARY/LINK_LIBRARY-CMP0156-OLD-link-items3-result.txt
new file mode 100644
index 0000000..8d98f9d
--- /dev/null
+++ b/Tests/RunCMake/target_link_libraries-LINK_LIBRARY/LINK_LIBRARY-CMP0156-OLD-link-items3-result.txt
@@ -0,0 +1 @@
+.*
diff --git a/Tests/RunCMake/target_link_libraries-LINK_LIBRARY/LINK_LIBRARY-CMP0156-OLD-link-items4-check.cmake b/Tests/RunCMake/target_link_libraries-LINK_LIBRARY/LINK_LIBRARY-CMP0156-OLD-link-items4-check.cmake
new file mode 100644
index 0000000..c473637
--- /dev/null
+++ b/Tests/RunCMake/target_link_libraries-LINK_LIBRARY/LINK_LIBRARY-CMP0156-OLD-link-items4-check.cmake
@@ -0,0 +1,4 @@
+
+if (NOT actual_stdout MATCHES "(/|-)-PREFIXGROUP\"? +\"?(/|-)-LIBFLAG.*${LINK_SHARED_LIBRARY_PREFIX}base1${LINK_SHARED_LIBRARY_SUFFIX}\"? +\"?(/|-)-ITEMFLAGother\"? +\"?(/|-)-SUFFIXGROUP")
+  set (RunCMake_TEST_FAILED "Not found expected '--PREFIXGROUP --LIBFLAG<base1> --ITEMFLAG<other> --SUFFIXGROUP'.")
+endif()
diff --git a/Tests/RunCMake/target_link_libraries-LINK_LIBRARY/LINK_LIBRARY-CMP0156-OLD-link-items4-result.txt b/Tests/RunCMake/target_link_libraries-LINK_LIBRARY/LINK_LIBRARY-CMP0156-OLD-link-items4-result.txt
new file mode 100644
index 0000000..8d98f9d
--- /dev/null
+++ b/Tests/RunCMake/target_link_libraries-LINK_LIBRARY/LINK_LIBRARY-CMP0156-OLD-link-items4-result.txt
@@ -0,0 +1 @@
+.*
diff --git a/Tests/RunCMake/target_link_libraries-LINK_LIBRARY/LINK_LIBRARY-mix-features2-check.cmake b/Tests/RunCMake/target_link_libraries-LINK_LIBRARY/LINK_LIBRARY-CMP0156-OLD-mix-features1-check.cmake
index ab06726..ab06726 100644
--- a/Tests/RunCMake/target_link_libraries-LINK_LIBRARY/LINK_LIBRARY-mix-features2-check.cmake
+++ b/Tests/RunCMake/target_link_libraries-LINK_LIBRARY/LINK_LIBRARY-CMP0156-OLD-mix-features1-check.cmake
diff --git a/Tests/RunCMake/target_link_libraries-LINK_LIBRARY/LINK_LIBRARY-CMP0156-OLD-mix-features1-result.txt b/Tests/RunCMake/target_link_libraries-LINK_LIBRARY/LINK_LIBRARY-CMP0156-OLD-mix-features1-result.txt
new file mode 100644
index 0000000..8d98f9d
--- /dev/null
+++ b/Tests/RunCMake/target_link_libraries-LINK_LIBRARY/LINK_LIBRARY-CMP0156-OLD-mix-features1-result.txt
@@ -0,0 +1 @@
+.*
diff --git a/Tests/RunCMake/target_link_libraries-LINK_LIBRARY/LINK_LIBRARY-mix-features1-check.cmake b/Tests/RunCMake/target_link_libraries-LINK_LIBRARY/LINK_LIBRARY-CMP0156-OLD-mix-features2-check.cmake
index 858dcfe..ab06726 100644
--- a/Tests/RunCMake/target_link_libraries-LINK_LIBRARY/LINK_LIBRARY-mix-features1-check.cmake
+++ b/Tests/RunCMake/target_link_libraries-LINK_LIBRARY/LINK_LIBRARY-CMP0156-OLD-mix-features2-check.cmake
@@ -1,4 +1,4 @@
 
 if (NOT actual_stdout MATCHES "(/|-)-PREFIXGROUP\"? +\"?(/|-)-LIBGROUP.*${LINK_SHARED_LIBRARY_PREFIX}base3${LINK_SHARED_LIBRARY_SUFFIX}\"? +\"?(/|-)-LIBGROUP.*${LINK_SHARED_LIBRARY_PREFIX}base1${LINK_SHARED_LIBRARY_SUFFIX}\"? +\"?(/|-)-SUFFIXGROUP")
-  set (RunCMake_TEST_FAILED "Not found expected '--PREFIXGROUP --LIBGROUP<base1> --LIBGROUP<base3> --SUFFIXGROUP'.")
+  set (RunCMake_TEST_FAILED "Not found expected '--PREFIXGROUP --LIBGROUP<base3> --LIBGROUP<base1> --SUFFIXGROUP'.")
 endif()
diff --git a/Tests/RunCMake/target_link_libraries-LINK_LIBRARY/LINK_LIBRARY-CMP0156-OLD-mix-features2-result.txt b/Tests/RunCMake/target_link_libraries-LINK_LIBRARY/LINK_LIBRARY-CMP0156-OLD-mix-features2-result.txt
new file mode 100644
index 0000000..8d98f9d
--- /dev/null
+++ b/Tests/RunCMake/target_link_libraries-LINK_LIBRARY/LINK_LIBRARY-CMP0156-OLD-mix-features2-result.txt
@@ -0,0 +1 @@
+.*
diff --git a/Tests/RunCMake/target_link_libraries-LINK_LIBRARY/LINK_LIBRARY-mix-features3-check.cmake b/Tests/RunCMake/target_link_libraries-LINK_LIBRARY/LINK_LIBRARY-CMP0156-OLD-mix-features3-check.cmake
index 62aa17c..62aa17c 100644
--- a/Tests/RunCMake/target_link_libraries-LINK_LIBRARY/LINK_LIBRARY-mix-features3-check.cmake
+++ b/Tests/RunCMake/target_link_libraries-LINK_LIBRARY/LINK_LIBRARY-CMP0156-OLD-mix-features3-check.cmake
diff --git a/Tests/RunCMake/target_link_libraries-LINK_LIBRARY/LINK_LIBRARY-CMP0156-OLD-mix-features3-result.txt b/Tests/RunCMake/target_link_libraries-LINK_LIBRARY/LINK_LIBRARY-CMP0156-OLD-mix-features3-result.txt
new file mode 100644
index 0000000..8d98f9d
--- /dev/null
+++ b/Tests/RunCMake/target_link_libraries-LINK_LIBRARY/LINK_LIBRARY-CMP0156-OLD-mix-features3-result.txt
@@ -0,0 +1 @@
+.*
diff --git a/Tests/RunCMake/target_link_libraries-LINK_LIBRARY/LINK_LIBRARY-CMP0156-OLD-nested-feature1-check.cmake b/Tests/RunCMake/target_link_libraries-LINK_LIBRARY/LINK_LIBRARY-CMP0156-OLD-nested-feature1-check.cmake
new file mode 100644
index 0000000..255c9a6
--- /dev/null
+++ b/Tests/RunCMake/target_link_libraries-LINK_LIBRARY/LINK_LIBRARY-CMP0156-OLD-nested-feature1-check.cmake
@@ -0,0 +1,4 @@
+
+if (NOT actual_stdout MATCHES "(/|-)-LIBFLAG.*${LINK_SHARED_LIBRARY_PREFIX}base1${LINK_SHARED_LIBRARY_SUFFIX}\"? +\"?(/|-)-LIBFLAG.*${LINK_SHARED_LIBRARY_PREFIX}base2${LINK_SHARED_LIBRARY_SUFFIX}")
+  set (RunCMake_TEST_FAILED "Not found expected '--LIBFLAG<base1> --LIBFLAG<base2>'.")
+endif()
diff --git a/Tests/RunCMake/target_link_libraries-LINK_LIBRARY/LINK_LIBRARY-CMP0156-OLD-nested-feature1-result.txt b/Tests/RunCMake/target_link_libraries-LINK_LIBRARY/LINK_LIBRARY-CMP0156-OLD-nested-feature1-result.txt
new file mode 100644
index 0000000..8d98f9d
--- /dev/null
+++ b/Tests/RunCMake/target_link_libraries-LINK_LIBRARY/LINK_LIBRARY-CMP0156-OLD-nested-feature1-result.txt
@@ -0,0 +1 @@
+.*
diff --git a/Tests/RunCMake/target_link_libraries-LINK_LIBRARY/LINK_LIBRARY-CMP0156-OLD-nested-feature2-check.cmake b/Tests/RunCMake/target_link_libraries-LINK_LIBRARY/LINK_LIBRARY-CMP0156-OLD-nested-feature2-check.cmake
new file mode 100644
index 0000000..a8e0da7
--- /dev/null
+++ b/Tests/RunCMake/target_link_libraries-LINK_LIBRARY/LINK_LIBRARY-CMP0156-OLD-nested-feature2-check.cmake
@@ -0,0 +1,4 @@
+
+if (NOT actual_stdout MATCHES "(/|-)-PREFIXGROUP\"? +\"?(/|-)-LIBGROUP.*${LINK_SHARED_LIBRARY_PREFIX}base1${LINK_SHARED_LIBRARY_SUFFIX}\"? +\"?(/|-)-LIBGROUP.*${LINK_SHARED_LIBRARY_PREFIX}base2${LINK_SHARED_LIBRARY_SUFFIX}\"? +\"?(/|-)-SUFFIXGROUP")
+  set (RunCMake_TEST_FAILED "Not found expected '--PREFIXGROUP --LIBGROUP<base1> --LIBGROUP<base2> --SUFFIXGROUP'.")
+endif()
diff --git a/Tests/RunCMake/target_link_libraries-LINK_LIBRARY/LINK_LIBRARY-CMP0156-OLD-nested-feature2-result.txt b/Tests/RunCMake/target_link_libraries-LINK_LIBRARY/LINK_LIBRARY-CMP0156-OLD-nested-feature2-result.txt
new file mode 100644
index 0000000..8d98f9d
--- /dev/null
+++ b/Tests/RunCMake/target_link_libraries-LINK_LIBRARY/LINK_LIBRARY-CMP0156-OLD-nested-feature2-result.txt
@@ -0,0 +1 @@
+.*
diff --git a/Tests/RunCMake/target_link_libraries-LINK_LIBRARY/LINK_LIBRARY-override-features3-check.cmake b/Tests/RunCMake/target_link_libraries-LINK_LIBRARY/LINK_LIBRARY-CMP0156-OLD-override-features1-check.cmake
index a9fba20..a9fba20 100644
--- a/Tests/RunCMake/target_link_libraries-LINK_LIBRARY/LINK_LIBRARY-override-features3-check.cmake
+++ b/Tests/RunCMake/target_link_libraries-LINK_LIBRARY/LINK_LIBRARY-CMP0156-OLD-override-features1-check.cmake
diff --git a/Tests/RunCMake/target_link_libraries-LINK_LIBRARY/LINK_LIBRARY-CMP0156-OLD-override-features1-result.txt b/Tests/RunCMake/target_link_libraries-LINK_LIBRARY/LINK_LIBRARY-CMP0156-OLD-override-features1-result.txt
new file mode 100644
index 0000000..8d98f9d
--- /dev/null
+++ b/Tests/RunCMake/target_link_libraries-LINK_LIBRARY/LINK_LIBRARY-CMP0156-OLD-override-features1-result.txt
@@ -0,0 +1 @@
+.*
diff --git a/Tests/RunCMake/target_link_libraries-LINK_LIBRARY/LINK_LIBRARY-override-features4-check.cmake b/Tests/RunCMake/target_link_libraries-LINK_LIBRARY/LINK_LIBRARY-CMP0156-OLD-override-features2-check.cmake
index 58c117e..58c117e 100644
--- a/Tests/RunCMake/target_link_libraries-LINK_LIBRARY/LINK_LIBRARY-override-features4-check.cmake
+++ b/Tests/RunCMake/target_link_libraries-LINK_LIBRARY/LINK_LIBRARY-CMP0156-OLD-override-features2-check.cmake
diff --git a/Tests/RunCMake/target_link_libraries-LINK_LIBRARY/LINK_LIBRARY-CMP0156-OLD-override-features2-result.txt b/Tests/RunCMake/target_link_libraries-LINK_LIBRARY/LINK_LIBRARY-CMP0156-OLD-override-features2-result.txt
new file mode 100644
index 0000000..8d98f9d
--- /dev/null
+++ b/Tests/RunCMake/target_link_libraries-LINK_LIBRARY/LINK_LIBRARY-CMP0156-OLD-override-features2-result.txt
@@ -0,0 +1 @@
+.*
diff --git a/Tests/RunCMake/target_link_libraries-LINK_LIBRARY/LINK_LIBRARY-override-features1-check.cmake b/Tests/RunCMake/target_link_libraries-LINK_LIBRARY/LINK_LIBRARY-CMP0156-OLD-override-features3-check.cmake
index a9fba20..a9fba20 100644
--- a/Tests/RunCMake/target_link_libraries-LINK_LIBRARY/LINK_LIBRARY-override-features1-check.cmake
+++ b/Tests/RunCMake/target_link_libraries-LINK_LIBRARY/LINK_LIBRARY-CMP0156-OLD-override-features3-check.cmake
diff --git a/Tests/RunCMake/target_link_libraries-LINK_LIBRARY/LINK_LIBRARY-CMP0156-OLD-override-features3-result.txt b/Tests/RunCMake/target_link_libraries-LINK_LIBRARY/LINK_LIBRARY-CMP0156-OLD-override-features3-result.txt
new file mode 100644
index 0000000..8d98f9d
--- /dev/null
+++ b/Tests/RunCMake/target_link_libraries-LINK_LIBRARY/LINK_LIBRARY-CMP0156-OLD-override-features3-result.txt
@@ -0,0 +1 @@
+.*
diff --git a/Tests/RunCMake/target_link_libraries-LINK_LIBRARY/LINK_LIBRARY-override-features2-check.cmake b/Tests/RunCMake/target_link_libraries-LINK_LIBRARY/LINK_LIBRARY-CMP0156-OLD-override-features4-check.cmake
index 58c117e..58c117e 100644
--- a/Tests/RunCMake/target_link_libraries-LINK_LIBRARY/LINK_LIBRARY-override-features2-check.cmake
+++ b/Tests/RunCMake/target_link_libraries-LINK_LIBRARY/LINK_LIBRARY-CMP0156-OLD-override-features4-check.cmake
diff --git a/Tests/RunCMake/target_link_libraries-LINK_LIBRARY/LINK_LIBRARY-CMP0156-OLD-override-features4-result.txt b/Tests/RunCMake/target_link_libraries-LINK_LIBRARY/LINK_LIBRARY-CMP0156-OLD-override-features4-result.txt
new file mode 100644
index 0000000..8d98f9d
--- /dev/null
+++ b/Tests/RunCMake/target_link_libraries-LINK_LIBRARY/LINK_LIBRARY-CMP0156-OLD-override-features4-result.txt
@@ -0,0 +1 @@
+.*
diff --git a/Tests/RunCMake/target_link_libraries-LINK_LIBRARY/LINK_LIBRARY-override-with-DEFAULT-check.cmake b/Tests/RunCMake/target_link_libraries-LINK_LIBRARY/LINK_LIBRARY-CMP0156-OLD-override-with-DEFAULT-check.cmake
index d022f7e..d022f7e 100644
--- a/Tests/RunCMake/target_link_libraries-LINK_LIBRARY/LINK_LIBRARY-override-with-DEFAULT-check.cmake
+++ b/Tests/RunCMake/target_link_libraries-LINK_LIBRARY/LINK_LIBRARY-CMP0156-OLD-override-with-DEFAULT-check.cmake
diff --git a/Tests/RunCMake/target_link_libraries-LINK_LIBRARY/LINK_LIBRARY-CMP0156-OLD-override-with-DEFAULT-result.txt b/Tests/RunCMake/target_link_libraries-LINK_LIBRARY/LINK_LIBRARY-CMP0156-OLD-override-with-DEFAULT-result.txt
new file mode 100644
index 0000000..8d98f9d
--- /dev/null
+++ b/Tests/RunCMake/target_link_libraries-LINK_LIBRARY/LINK_LIBRARY-CMP0156-OLD-override-with-DEFAULT-result.txt
@@ -0,0 +1 @@
+.*
diff --git a/Tests/RunCMake/target_link_libraries-LINK_LIBRARY/LINK_LIBRARY-CMP0156-OLD-simple1-check.cmake b/Tests/RunCMake/target_link_libraries-LINK_LIBRARY/LINK_LIBRARY-CMP0156-OLD-simple1-check.cmake
new file mode 100644
index 0000000..32b58fe
--- /dev/null
+++ b/Tests/RunCMake/target_link_libraries-LINK_LIBRARY/LINK_LIBRARY-CMP0156-OLD-simple1-check.cmake
@@ -0,0 +1,4 @@
+
+if (NOT actual_stdout MATCHES "(/|-)-LIBFLAG.*${LINK_SHARED_LIBRARY_PREFIX}base1")
+  set (RunCMake_TEST_FAILED "Not found expected '--LIBFLAG<base1>'.")
+endif()
diff --git a/Tests/RunCMake/target_link_libraries-LINK_LIBRARY/LINK_LIBRARY-CMP0156-OLD-simple1-result.txt b/Tests/RunCMake/target_link_libraries-LINK_LIBRARY/LINK_LIBRARY-CMP0156-OLD-simple1-result.txt
new file mode 100644
index 0000000..8d98f9d
--- /dev/null
+++ b/Tests/RunCMake/target_link_libraries-LINK_LIBRARY/LINK_LIBRARY-CMP0156-OLD-simple1-result.txt
@@ -0,0 +1 @@
+.*
diff --git a/Tests/RunCMake/target_link_libraries-LINK_LIBRARY/LINK_LIBRARY-CMP0156-OLD-simple2-check.cmake b/Tests/RunCMake/target_link_libraries-LINK_LIBRARY/LINK_LIBRARY-CMP0156-OLD-simple2-check.cmake
new file mode 100644
index 0000000..32b58fe
--- /dev/null
+++ b/Tests/RunCMake/target_link_libraries-LINK_LIBRARY/LINK_LIBRARY-CMP0156-OLD-simple2-check.cmake
@@ -0,0 +1,4 @@
+
+if (NOT actual_stdout MATCHES "(/|-)-LIBFLAG.*${LINK_SHARED_LIBRARY_PREFIX}base1")
+  set (RunCMake_TEST_FAILED "Not found expected '--LIBFLAG<base1>'.")
+endif()
diff --git a/Tests/RunCMake/target_link_libraries-LINK_LIBRARY/LINK_LIBRARY-CMP0156-OLD-simple2-result.txt b/Tests/RunCMake/target_link_libraries-LINK_LIBRARY/LINK_LIBRARY-CMP0156-OLD-simple2-result.txt
new file mode 100644
index 0000000..8d98f9d
--- /dev/null
+++ b/Tests/RunCMake/target_link_libraries-LINK_LIBRARY/LINK_LIBRARY-CMP0156-OLD-simple2-result.txt
@@ -0,0 +1 @@
+.*
diff --git a/Tests/RunCMake/target_link_libraries-LINK_LIBRARY/LINK_LIBRARY.cmake b/Tests/RunCMake/target_link_libraries-LINK_LIBRARY/LINK_LIBRARY.cmake
index f19112a..e8f9425 100644
--- a/Tests/RunCMake/target_link_libraries-LINK_LIBRARY/LINK_LIBRARY.cmake
+++ b/Tests/RunCMake/target_link_libraries-LINK_LIBRARY/LINK_LIBRARY.cmake
@@ -1,5 +1,12 @@
 enable_language(C)
 
+if(CMP0156 STREQUAL "NEW")
+  cmake_policy(SET CMP0156 NEW)
+  file(WRITE "${CMAKE_CURRENT_BINARY_DIR}/LIBRARIES_PROCESSING.cmake" "set(CMAKE_C_LINK_LIBRARIES_PROCESSING \"${CMAKE_C_LINK_LIBRARIES_PROCESSING}\")\n")
+else()
+  cmake_policy(SET CMP0156 OLD)
+endif()
+
 # 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)
diff --git a/Tests/RunCMake/target_link_libraries-LINK_LIBRARY/RunCMakeTest.cmake b/Tests/RunCMake/target_link_libraries-LINK_LIBRARY/RunCMakeTest.cmake
index 0f3a6b7..9ef7f34 100644
--- a/Tests/RunCMake/target_link_libraries-LINK_LIBRARY/RunCMakeTest.cmake
+++ b/Tests/RunCMake/target_link_libraries-LINK_LIBRARY/RunCMakeTest.cmake
@@ -37,29 +37,32 @@ if ((RunCMake_GENERATOR MATCHES "Makefiles|Ninja|Xcode"
     set(LINK_EXTERN_LIBRARY_SUFFIX "${CMAKE_IMPORT_LIBRARY_SUFFIX}")
   endif()
 
-  run_cmake(LINK_LIBRARY)
-
-  run_cmake_target(LINK_LIBRARY simple1 LinkLibrary_simple1)
-  run_cmake_target(LINK_LIBRARY simple2 LinkLibrary_simple2)
-  run_cmake_target(LINK_LIBRARY group1 LinkLibrary_group1)
-  run_cmake_target(LINK_LIBRARY group2 LinkLibrary_group2)
-  run_cmake_target(LINK_LIBRARY nested-feature1 LinkLibrary_nested_feature1)
-  run_cmake_target(LINK_LIBRARY nested-feature2 LinkLibrary_nested_feature2)
-  run_cmake_target(LINK_LIBRARY link-items1 LinkLibrary_link_items1)
-  run_cmake_target(LINK_LIBRARY link-items2 LinkLibrary_link_items2)
-  run_cmake_target(LINK_LIBRARY link-items3 LinkLibrary_link_items3)
-  run_cmake_target(LINK_LIBRARY link-items4 LinkLibrary_link_items4)
-  run_cmake_target(LINK_LIBRARY mix-features1 LinkLibrary_mix_features1)
-  run_cmake_target(LINK_LIBRARY mix-features2 LinkLibrary_mix_features2)
-  run_cmake_target(LINK_LIBRARY mix-features3 LinkLibrary_mix_features3)
-
-  # testing target property LINK_LIBRARY_OVERRIDE
-  run_cmake_target(LINK_LIBRARY override-features1 LinkLibrary_override_features1)
-  run_cmake_target(LINK_LIBRARY override-features2 LinkLibrary_override_features2)
-  run_cmake_target(LINK_LIBRARY override-with-DEFAULT LinkLibrary_override_with_default)
-  # testing target property LINK_LIBRARY_OVERRIDE_<LIBRARY>
-  run_cmake_target(LINK_LIBRARY override-features3 LinkLibrary_override_features3)
-  run_cmake_target(LINK_LIBRARY override-features4 LinkLibrary_override_features4)
+  foreach(policy IN ITEMS OLD NEW)
+    set(RunCMake_TEST_BINARY_DIR ${RunCMake_BINARY_DIR}/LINK_LIBRARY-CMP0156-${policy}-build)
+    run_cmake_with_options(LINK_LIBRARY -DCMP0156=${policy})
+
+    run_cmake_target(LINK_LIBRARY-CMP0156-${policy} simple1 LinkLibrary_simple1)
+    run_cmake_target(LINK_LIBRARY-CMP0156-${policy} simple2 LinkLibrary_simple2)
+    run_cmake_target(LINK_LIBRARY-CMP0156-${policy} group1 LinkLibrary_group1)
+    run_cmake_target(LINK_LIBRARY-CMP0156-${policy} group2 LinkLibrary_group2)
+    run_cmake_target(LINK_LIBRARY-CMP0156-${policy} nested-feature1 LinkLibrary_nested_feature1)
+    run_cmake_target(LINK_LIBRARY-CMP0156-${policy} nested-feature2 LinkLibrary_nested_feature2)
+    run_cmake_target(LINK_LIBRARY-CMP0156-${policy} link-items1 LinkLibrary_link_items1)
+    run_cmake_target(LINK_LIBRARY-CMP0156-${policy} link-items2 LinkLibrary_link_items2)
+    run_cmake_target(LINK_LIBRARY-CMP0156-${policy} link-items3 LinkLibrary_link_items3)
+    run_cmake_target(LINK_LIBRARY-CMP0156-${policy} link-items4 LinkLibrary_link_items4)
+    run_cmake_target(LINK_LIBRARY-CMP0156-${policy} mix-features1 LinkLibrary_mix_features1)
+    run_cmake_target(LINK_LIBRARY-CMP0156-${policy} mix-features2 LinkLibrary_mix_features2)
+    run_cmake_target(LINK_LIBRARY-CMP0156-${policy} mix-features3 LinkLibrary_mix_features3)
+
+    # testing target property LINK_LIBRARY_OVERRIDE
+    run_cmake_target(LINK_LIBRARY-CMP0156-${policy} override-features1 LinkLibrary_override_features1)
+    run_cmake_target(LINK_LIBRARY-CMP0156-${policy} override-features2 LinkLibrary_override_features2)
+    run_cmake_target(LINK_LIBRARY-CMP0156-${policy} override-with-DEFAULT LinkLibrary_override_with_default)
+    # testing target property LINK_LIBRARY_OVERRIDE_<LIBRARY>
+    run_cmake_target(LINK_LIBRARY-CMP0156-${policy} override-features3 LinkLibrary_override_features3)
+    run_cmake_target(LINK_LIBRARY-CMP0156-${policy} override-features4 LinkLibrary_override_features4)
+  endforeach()
 
   run_cmake(imported-target)