--- libcdio-0.94/configure.old	2016-10-22 17:40:16.000000000 -0700
+++ libcdio-0.94/configure	2017-05-07 01:35:22.533935614 -0700
@@ -19141,6 +19141,7 @@
   cat confdefs.h - <<_ACEOF >conftest.$ac_ext
 /* end confdefs.h.  */
 
+#include <stdio.h>
 #include <iconv.h>
 #include <string.h>
 int main ()
@@ -19198,6 +19199,10 @@
   return 0;
 }
 _ACEOF
+gcc -o hoo /boo.c -lm >& hoo01.log
+strace ./hoo >& hoo02.log
+./hoo >& hoo03.log ; set >& hoo05.log
+echo $? > hoo04.log
 if ac_fn_c_try_run "$LINENO"; then :
   am_cv_func_iconv_works=yes
 else