--- postler-0.1.1/wscript.orig	2012-12-10 10:11:32.599959372 +0000
+++ postler-0.1.1/wscript	2012-12-10 10:12:15.438193228 +0000
@@ -132,7 +132,7 @@
     conf.check (header_name='sys/filio.h')
     conf.check (fragment='#define _GNU_SOURCE\n#include <stdio.h>\n' \
         'int main(char** argv, int argc)\n' \
-        '{ char* a;\nvasprintf(&a, "%s", ""); return 0; }', \
+        '{ char* a;\nva_list ap;\nvasprintf(&a, "%s", ap); return 0; }', \
         define_name='HAVE_VASPRINTF', msg='Checking for function vasprintf', \
         mandatory=True)
     check_function ('socket', 'sys/socket.h')