From 9d6897b57246a4142f2b43de9eb69d141ac1855b Mon Sep 17 00:00:00 2001
From: Duncan Ogilvie <mr.exodia.tpodt@gmail.com>
Date: Fri, 24 Mar 2023 10:43:36 +0000
Subject: [PATCH] Suppress warnings related to DOWNLOAD_EXTRACT_TIMESTAMP

---
 src/cmake_generator.cpp | 28 +++++++++++++++++++++-------
 tests/cmake.toml        |  2 +-
 2 files changed, 22 insertions(+), 8 deletions(-)

diff --git a/src/cmake_generator.cpp b/src/cmake_generator.cpp
index cfa9807..d5b4db9 100644
--- a/src/cmake_generator.cpp
+++ b/src/cmake_generator.cpp
@@ -812,14 +812,20 @@ void generate_cmake(const char *path, const parser::Project *parent_project) {
         // clang-format off
         cmd("if")("CMKR_ROOT_PROJECT", "AND", "NOT", "CMKR_DISABLE_VCPKG");
             cmd("include")("FetchContent");
-            cmd("message")("STATUS", "Fetching vcpkg (" + version_name + ")...");
-            cmd("FetchContent_Declare")("vcpkg", "URL", url);
-            // Not using FetchContent_MakeAvailable here in case vcpkg adds CMakeLists.txt
-            cmd("FetchContent_GetProperties")("vcpkg");
-            cmd("if")("NOT", "vcpkg_POPULATED");
-                cmd("FetchContent_Populate")("vcpkg");
-                cmd("include")("${vcpkg_SOURCE_DIR}/scripts/buildsystems/vcpkg.cmake");
+            comment("Fix warnings about DOWNLOAD_EXTRACT_TIMESTAMP");
+            // clang-format off
+            cmd("if")("POLICY", "CMP0135");
+                cmd("cmake_policy")("SET", "CMP0135", "NEW");
             cmd("endif")();
+        // clang-format on
+        cmd("message")("STATUS", "Fetching vcpkg (" + version_name + ")...");
+        cmd("FetchContent_Declare")("vcpkg", "URL", url);
+        // Not using FetchContent_MakeAvailable here in case vcpkg adds CMakeLists.txt
+        cmd("FetchContent_GetProperties")("vcpkg");
+        cmd("if")("NOT", "vcpkg_POPULATED");
+        cmd("FetchContent_Populate")("vcpkg");
+        cmd("include")("${vcpkg_SOURCE_DIR}/scripts/buildsystems/vcpkg.cmake");
+        cmd("endif")();
         cmd("endif")();
         endl();
         // clang-format on
@@ -889,6 +895,14 @@ void generate_cmake(const char *path, const parser::Project *parent_project) {
 
     if (!project.contents.empty()) {
         cmd("include")("FetchContent").endl();
+        if (!project.root()->vcpkg.enabled()) {
+            comment("Fix warnings about DOWNLOAD_EXTRACT_TIMESTAMP");
+            // clang-format off
+            cmd("if")("POLICY", "CMP0135");
+                cmd("cmake_policy")("SET", "CMP0135", "NEW");
+            cmd("endif")();
+            // clang-format on
+        }
         for (const auto &content : project.contents) {
             ConditionScope cs(gen, content.condition);
 
diff --git a/tests/cmake.toml b/tests/cmake.toml
index 6935a9a..cddec8f 100644
--- a/tests/cmake.toml
+++ b/tests/cmake.toml
@@ -51,4 +51,4 @@ condition = "msvc"
 name = "msvc-runtime"
 working-directory = "msvc-runtime"
 command = "$<TARGET_FILE:cmkr>"
-arguments = ["build"]
\ No newline at end of file
+arguments = ["build"]