patch 8.2.0711: temp directory might be cleared
Problem: With a long running Vim the temp directory might be cleared on
some systems.
Solution: Lock the temp directory. (closes #6044)
diff --git a/src/auto/configure b/src/auto/configure
index 6087e0e..659ef82 100755
--- a/src/auto/configure
+++ b/src/auto/configure
@@ -13823,6 +13823,53 @@
rm -f core conftest.err conftest.$ac_objext \
conftest$ac_exeext conftest.$ac_ext
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for dirfd" >&5
+$as_echo_n "checking for dirfd... " >&6; }
+cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h. */
+#include <sys/types.h>
+#include <dirent.h>
+int
+main ()
+{
+DIR * dir=opendir("dirname"); dirfd(dir);
+ ;
+ return 0;
+}
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"; then :
+ { $as_echo "$as_me:${as_lineno-$LINENO}: result: yes" >&5
+$as_echo "yes" >&6; }; $as_echo "#define HAVE_DIRFD 1" >>confdefs.h
+
+else
+ { $as_echo "$as_me:${as_lineno-$LINENO}: result: not usable" >&5
+$as_echo "not usable" >&6; }
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
+
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for flock" >&5
+$as_echo_n "checking for flock... " >&6; }
+cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h. */
+#include <sys/file.h>
+int
+main ()
+{
+flock(10, LOCK_SH);
+ ;
+ return 0;
+}
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"; then :
+ { $as_echo "$as_me:${as_lineno-$LINENO}: result: yes" >&5
+$as_echo "yes" >&6; }; $as_echo "#define HAVE_FLOCK 1" >>confdefs.h
+
+else
+ { $as_echo "$as_me:${as_lineno-$LINENO}: result: not usable" >&5
+$as_echo "not usable" >&6; }
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
+
{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for sysctl" >&5
$as_echo_n "checking for sysctl... " >&6; }
cat confdefs.h - <<_ACEOF >conftest.$ac_ext