make check: avoid an error when no .git dir present.

[gnulib.git] / top / maint.mk

diff --git a/top/maint.mk b/top/maint.mk
index f646e43..33803f3 100644 (file)
--- a/top/maint.mk
+++ b/top/maint.mk
@@ -645,6 +645,12 @@ sc_useless_cpp_parens:
        halt='found useless parentheses in cpp directive'               \
          $(_sc_search_regexp)
 
+# Prohibit checked in backup files.
+sc_prohibit_backup_files:
+       @$(VC_LIST) | grep '~$$' &&                             \
+         { echo '$(ME): found version controlled backup file' 1>&2;    \
+           exit 1; } || :
+
 # Require the latest GPL.
 sc_GPL_version:
        @prohibit='either ''version [^3]'                               \