#if GNUTLS_VERSION_NUMBER <= 0x020b00 #include <gcrypt.h> GCRY_THREAD_OPTION_PTHREAD_IMPL; #endif #include "claws.h" #include "utils.h" #include "ssl.h" is a problem, since GNUTLS_VERSION_NUMBER is defined in gnutls headers, included via ssl.h.
Fixed in: http://git.claws-mail.org/?p=claws.git;a=commitdiff;h=845d06230be8876ec0664d362125e1e1b6575507 But wrote a wrong bug number in commit message ;-P