abstract out error logging a bit

just spitting things to stderr isn't always going to be good enough, so
let's at least provide one place to change that when necessary

1 files changed, 13 insertions, 0 deletions

diff --git a/src/util.c b/src/util.c
new file mode 100644
index 0000000..d87fd72
--- /dev/null
+++ b/src/util.c
@@ -0,0 +1,13 @@
+#include <stdarg.h>
+#include <stdio.h>
+
+#include "runes.h"
+
+void runes_warn(const char *fmt, ...)
+{
+    va_list ap;
+    va_start(ap, fmt);
+    /* XXX make this do something else on windows */
+    vfprintf(stderr, fmt, ap);
+    va_end(ap);
+}