Do not expect EINTR when sleep is interrupted on GNU/HUrd

Closes: #1057785

debian/patches/0002-Do-not-expect-EINTR-when-sleep-is-interrupted-on-GNU.patch

@@ -0,0 +1,26 @@
+From: Mattias Ellert <mattias.ellert@physics.uu.se>
+Date: Fri, 8 Dec 2023 10:15:27 +0100
+Subject: Do not expect EINTR when sleep is interrupted on GNU/Hurd
+
+Previously `RunCMake.CTestTimeout` failed on GNU/Hurd because the
+`sleep` command does not set `errno` to `EINTR` when interrupted by a
+signal, which is a Linux-specific feature.
+
+Forwarded: https://gitlab.kitware.com/cmake/cmake/-/merge_requests/9052
+---
+ Tests/RunCMake/CTestTimeout/TestTimeout.c | 2 +-
+ 1 file changed, 1 insertion(+), 1 deletion(-)
+
+diff --git a/Tests/RunCMake/CTestTimeout/TestTimeout.c b/Tests/RunCMake/CTestTimeout/TestTimeout.c
+index 425548c..da397f8 100644
+--- a/Tests/RunCMake/CTestTimeout/TestTimeout.c
++++ b/Tests/RunCMake/CTestTimeout/TestTimeout.c
+@@ -45,7 +45,7 @@ int main(void)
+ #if defined(_WIN32)
+   Sleep((TIMEOUT + 4) * 1000);
+ #elif defined(SIGNAL_IGNORE)
+-#  if defined(__CYGWIN__) || defined(__sun__)
++#  if defined(__CYGWIN__) || defined(__sun__) || defined(__GNU__)
+ #    define ERRNO_IS_EINTR (errno == EINTR || errno == 0)
+ #  else
+ #    define ERRNO_IS_EINTR (errno == EINTR)

debian/patches/series

@@ -1 +1,2 @@
 0001-Prefer-default-Python-version.patch
+0002-Do-not-expect-EINTR-when-sleep-is-interrupted-on-GNU.patch