Did you put the function prototype in the udf.h file? ----- Original Message ----- From: "Shmagi Kavtaradze" <kavtaradze.s@gmail.com> To: "users-list" <users-list@monetdb.org> Sent: Thursday, March 31, 2016 2:49:25 PM Subject: No previous prototype for function I use two versions of Monetdb. 1 is PythonUDF and another Monetdb 11.21.13. Function "bitand" is compiled and used well in Monetdb, but when I try to compile PythonUDF it gives me errors: udf.c:14:1: error: no previous prototype for 'UDFbitand' [-Werror=missing-prototypes] UDFbitand(flt *ret, lng*a, lng *b) ^ cc1: all warnings being treated as errors Makefile:876: recipe for target 'lib_udf_la-udf.lo' failed any ideas? thanks in advance. _______________________________________________ users-list mailing list users-list@monetdb.org https://www.monetdb.org/mailman/listinfo/users-list