X-Git-Url: https://arthur.barton.de/cgi-bin/gitweb.cgi?a=blobdiff_plain;f=lib%2Fbup%2F_helpers.c;h=13f72c691c805f225c152ffa16f99e3ecff38d98;hb=9af44b1829ad46f0550325cf871f76d7b40b1ca8;hp=67c39b568c66d5598dfbcc899188f34220e00a4e;hpb=d632a13fb8c9e5f47151c70da07bfd78e7c09f28;p=bup.git

diff --git a/lib/bup/_helpers.c b/lib/bup/_helpers.c
index 67c39b5..13f72c6 100644
--- a/lib/bup/_helpers.c
+++ b/lib/bup/_helpers.c
@@ -46,10 +46,12 @@
 #include <time.h>
 #endif
 
-#ifdef BUP_HAVE_READLINE
-#if ! defined(_XOPEN_SOURCE) || _XOPEN_SOURCE < BUP_RL_EXPECTED_XOPEN_SOURCE
-# warning "_XOPEN_SOURCE version is too low for readline"
+#if defined(BUP_RL_EXPECTED_XOPEN_SOURCE) \
+    && (!defined(_XOPEN_SOURCE) || _XOPEN_SOURCE < BUP_RL_EXPECTED_XOPEN_SOURCE)
+# warning "_XOPEN_SOURCE version is incorrect for readline"
 #endif
+
+#ifdef BUP_HAVE_READLINE
 #include <readline/readline.h>
 #include <readline/history.h>
 #endif