From 14e21fa9922555f64f1f604284a83b9e3110ff28 Mon Sep 17 00:00:00 2001
From: Brad King <brad.king@kitware.com>
Date: Wed, 16 Jul 2025 14:07:48 -0400
Subject: [PATCH 1/2] bootstrap: Compile with 64-bit time_t on 32-bit Linux if
 possible

Extend commit 1b9e8f833f (Linux: Compile with 64-bit time_t even on
32-bit architectures, 2025-06-26, v4.1.0-rc2~16^2) to `bootstrap`.
---
 bootstrap | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/bootstrap b/bootstrap
index 2ec6aacca7..d88a88db96 100755
--- a/bootstrap
+++ b/bootstrap
@@ -1848,7 +1848,7 @@ fi
 system_flags=''
 case "${cmake_system}" in
   # Ensure filesystem access uses 64-bit offsets even on 32-bit hosts.
-  *Linux*) system_flags='-D_FILE_OFFSET_BITS=64' ;;
+  *Linux*) system_flags='-D_FILE_OFFSET_BITS=64 -D_TIME_BITS=64' ;;
 esac
 if test "x${system_flags}" != "x"; then
   cmake_c_flags="${cmake_c_flags} ${system_flags}"

From a760a74abfbb6feb753daf2508453ce9eb508de4 Mon Sep 17 00:00:00 2001
From: Brad King <brad.king@kitware.com>
Date: Wed, 16 Jul 2025 14:12:34 -0400
Subject: [PATCH 2/2] Tests: Optionally skip tests requiring 64-bit time_t

On some platforms, `time_t` is always 32-bit.  Add an explicit option
to skip tests that require 64-bit `time_t`.
---
 Tests/RunCMake/CMakeLists.txt            | 1 +
 Tests/RunCMake/string/RunCMakeTest.cmake | 1 +
 2 files changed, 2 insertions(+)

diff --git a/Tests/RunCMake/CMakeLists.txt b/Tests/RunCMake/CMakeLists.txt
index c92aac1484..e8fc9dad84 100644
--- a/Tests/RunCMake/CMakeLists.txt
+++ b/Tests/RunCMake/CMakeLists.txt
@@ -747,6 +747,7 @@ add_RunCMake_test(set_property)
 add_RunCMake_test(string
   -DCMAKE_SYSTEM_NAME=${CMAKE_SYSTEM_NAME}
   -DCMAKE_SYSTEM_PROCESSOR=${CMAKE_SYSTEM_PROCESSOR}
+  -DCMake_TEST_NO_64BIT_TIME=${CMake_TEST_NO_64BIT_TIME}
   )
 add_RunCMake_test(test_include_dirs)
 add_RunCMake_test(BundleUtilities)
diff --git a/Tests/RunCMake/string/RunCMakeTest.cmake b/Tests/RunCMake/string/RunCMakeTest.cmake
index 6baf6214fc..b0aabb6ca2 100644
--- a/Tests/RunCMake/string/RunCMakeTest.cmake
+++ b/Tests/RunCMake/string/RunCMakeTest.cmake
@@ -23,6 +23,7 @@ run_cmake(JoinNoVar)
 run_cmake(Timestamp)
 if(NOT CMAKE_SYSTEM_NAME STREQUAL "AIX" # FIXME: Needs 64-bit build
     AND NOT CMAKE_SYSTEM_NAME STREQUAL "SunOS" # FIXME: Needs 64-bit build
+    AND NOT CMake_TEST_NO_64BIT_TIME
     )
   run_cmake(Timestamp2038)
 endif()