15 files changed, 50 insertions, 0 deletions
diff --git a/Tests/RunCMake/CMP0135/CMP0135-Common.cmake b/Tests/RunCMake/CMP0135/CMP0135-Common.cmake
new file mode 100644
index 0000000..4b7cce5
--- /dev/null
+++ b/Tests/RunCMake/CMP0135/CMP0135-Common.cmake
@@ -0,0 +1,18 @@
+include(ExternalProject)
+
+set(stamp_dir "${CMAKE_CURRENT_BINARY_DIR}/stamps")
+
+ExternalProject_Add(fake_ext_proj
+  # We don't actually do a build, so we never try to download from this URL
+  URL https://example.com/something.zip
+  STAMP_DIR ${stamp_dir}
+)
+
+# Report whether the --touch option was added to the extraction script
+set(extraction_script "${stamp_dir}/extract-fake_ext_proj.cmake")
+file(STRINGS "${extraction_script}" results REGEX "--touch")
+if("${results}" STREQUAL "")
+  message(STATUS "Using timestamps from archive")
+else()
+  message(STATUS "Using extraction time for the timestamps")
+endif()
diff --git a/Tests/RunCMake/CMP0135/CMP0135-NEW-stdout.txt b/Tests/RunCMake/CMP0135/CMP0135-NEW-stdout.txt
new file mode 100644
index 0000000..bf53c0b
--- /dev/null
+++ b/Tests/RunCMake/CMP0135/CMP0135-NEW-stdout.txt
@@ -0,0 +1 @@
+Using extraction time for the timestamps
diff --git a/Tests/RunCMake/CMP0135/CMP0135-NEW.cmake b/Tests/RunCMake/CMP0135/CMP0135-NEW.cmake
new file mode 100644
index 0000000..1fd6354
--- /dev/null
+++ b/Tests/RunCMake/CMP0135/CMP0135-NEW.cmake
@@ -0,0 +1,2 @@
+cmake_policy(SET CMP0135 NEW)
+include(CMP0135-Common.cmake)
diff --git a/Tests/RunCMake/CMP0135/CMP0135-OLD-stdout.txt b/Tests/RunCMake/CMP0135/CMP0135-OLD-stdout.txt
new file mode 100644
index 0000000..ee57beb
--- /dev/null
+++ b/Tests/RunCMake/CMP0135/CMP0135-OLD-stdout.txt
@@ -0,0 +1 @@
+Using timestamps from archive
diff --git a/Tests/RunCMake/CMP0135/CMP0135-OLD.cmake b/Tests/RunCMake/CMP0135/CMP0135-OLD.cmake
new file mode 100644
index 0000000..80d58a7
--- /dev/null
+++ b/Tests/RunCMake/CMP0135/CMP0135-OLD.cmake
@@ -0,0 +1,2 @@
+cmake_policy(SET CMP0135 OLD)
+include(CMP0135-Common.cmake)
diff --git a/Tests/RunCMake/CMP0135/CMP0135-WARN-stderr.txt b/Tests/RunCMake/CMP0135/CMP0135-WARN-stderr.txt
new file mode 100644
index 0000000..8ba0027
--- /dev/null
+++ b/Tests/RunCMake/CMP0135/CMP0135-WARN-stderr.txt
@@ -0,0 +1,10 @@
+CMake Warning \(dev\) at .*/Modules/ExternalProject.cmake:[0-9]+ \(message\):
+  The DOWNLOAD_EXTRACT_TIMESTAMP option was not given and policy CMP0135 is
+  not set\.  The policy's OLD behavior will be used\.  When using a URL
+  download, the timestamps of extracted files should preferably be that of
+  the time of extraction, otherwise code that depends on the extracted
+  contents might not be rebuilt if the URL changes\.  The OLD behavior
+  preserves the timestamps from the archive instead, but this is usually not
+  what you want\.  Update your project to the NEW behavior or specify the
+  DOWNLOAD_EXTRACT_TIMESTAMP option with a value of true to avoid this
+  robustness issue\.
diff --git a/Tests/RunCMake/CMP0135/CMP0135-WARN-stdout.txt b/Tests/RunCMake/CMP0135/CMP0135-WARN-stdout.txt
new file mode 100644
index 0000000..ee57beb
--- /dev/null
+++ b/Tests/RunCMake/CMP0135/CMP0135-WARN-stdout.txt
@@ -0,0 +1 @@
+Using timestamps from archive
diff --git a/Tests/RunCMake/CMP0135/CMP0135-WARN.cmake b/Tests/RunCMake/CMP0135/CMP0135-WARN.cmake
new file mode 100644
index 0000000..ab71c40
--- /dev/null
+++ b/Tests/RunCMake/CMP0135/CMP0135-WARN.cmake
@@ -0,0 +1,2 @@
+
+include(CMP0135-Common.cmake)
diff --git a/Tests/RunCMake/CMP0135/CMakeLists.txt b/Tests/RunCMake/CMP0135/CMakeLists.txt
new file mode 100644
index 0000000..5ff8d3e
--- /dev/null
+++ b/Tests/RunCMake/CMP0135/CMakeLists.txt
@@ -0,0 +1,3 @@
+cmake_minimum_required(VERSION 3.23)
+project(${RunCMake_TEST} NONE)
+include(${RunCMake_TEST}.cmake)
diff --git a/Tests/RunCMake/CMP0135/RunCMakeTest.cmake b/Tests/RunCMake/CMP0135/RunCMakeTest.cmake
new file mode 100644
index 0000000..da92391
--- /dev/null
+++ b/Tests/RunCMake/CMP0135/RunCMakeTest.cmake
@@ -0,0 +1,5 @@
+include(RunCMake)
+
+run_cmake(CMP0135-WARN)
+run_cmake(CMP0135-OLD)
+run_cmake(CMP0135-NEW)
diff --git a/Tests/RunCMake/CMakeLists.txt b/Tests/RunCMake/CMakeLists.txt
index c2677a0..515c6d8 100644
--- a/Tests/RunCMake/CMakeLists.txt
+++ b/Tests/RunCMake/CMakeLists.txt
@@ -149,6 +149,7 @@ if("${CMAKE_C_COMPILER_ID}" STREQUAL "LCC" OR
 endif()
 
 add_RunCMake_test(CMP0132)
+add_RunCMake_test(CMP0135)
 
 # The test for Policy 65 requires the use of the
 # CMAKE_SHARED_LIBRARY_LINK_CXX_FLAGS variable, which both the VS and Xcode
diff --git a/Tests/RunCMake/ExternalProject/Add_StepDependencies.cmake b/Tests/RunCMake/ExternalProject/Add_StepDependencies.cmake
index bfed4fa..364bf9e 100644
--- a/Tests/RunCMake/ExternalProject/Add_StepDependencies.cmake
+++ b/Tests/RunCMake/ExternalProject/Add_StepDependencies.cmake
@@ -4,6 +4,7 @@ if(CMAKE_XCODE_BUILD_SYSTEM VERSION_GREATER_EQUAL 12)
 else()
   cmake_policy(SET CMP0114 OLD) # Test deprecated behavior.
 endif()
+cmake_policy(SET CMP0135 NEW)
 
 include(ExternalProject)
 
diff --git a/Tests/RunCMake/ExternalProject/Add_StepDependencies_no_target.cmake b/Tests/RunCMake/ExternalProject/Add_StepDependencies_no_target.cmake
index 039dec6..da823cd 100644
--- a/Tests/RunCMake/ExternalProject/Add_StepDependencies_no_target.cmake
+++ b/Tests/RunCMake/ExternalProject/Add_StepDependencies_no_target.cmake
@@ -4,6 +4,7 @@ if(CMAKE_XCODE_BUILD_SYSTEM VERSION_GREATER_EQUAL 12)
 else()
   cmake_policy(SET CMP0114 OLD) # Test deprecated behavior.
 endif()
+cmake_policy(SET CMP0135 NEW)
 
 include(ExternalProject)
 
diff --git a/Tests/RunCMake/ExternalProject/CMakeLists.txt b/Tests/RunCMake/ExternalProject/CMakeLists.txt
index 933a57a..b94f825 100644
--- a/Tests/RunCMake/ExternalProject/CMakeLists.txt
+++ b/Tests/RunCMake/ExternalProject/CMakeLists.txt
@@ -3,4 +3,5 @@ project(${RunCMake_TEST} NONE)
 if(CMAKE_XCODE_BUILD_SYSTEM VERSION_GREATER_EQUAL 12 AND NOT RunCMake_TEST STREQUAL "Xcode-CMP0114")
   cmake_policy(SET CMP0114 NEW)
 endif()
+cmake_policy(SET CMP0135 NEW)
 include(${RunCMake_TEST}.cmake)
diff --git a/Tests/RunCMake/ExternalProject/NO_DEPENDS-CMP0114-NEW-Direct.cmake b/Tests/RunCMake/ExternalProject/NO_DEPENDS-CMP0114-NEW-Direct.cmake
index 7ec1a00..e257425 100644
--- a/Tests/RunCMake/ExternalProject/NO_DEPENDS-CMP0114-NEW-Direct.cmake
+++ b/Tests/RunCMake/ExternalProject/NO_DEPENDS-CMP0114-NEW-Direct.cmake
@@ -1,4 +1,5 @@
 cmake_policy(SET CMP0114 NEW)
+cmake_policy(SET CMP0135 NEW)
 include(ExternalProject)
 ExternalProject_Add(BAR SOURCE_DIR .  TEST_COMMAND echo test)
 ExternalProject_Add_StepTargets(BAR NO_DEPENDS test)