curl-7.52.1，axTLS-2.1.2，centos 6.8
1.
axTLS/os_int.h:45:16: error: two or more data types in declaration specifiers
typedef char bool;
^
2.
vtls/axtls.c:269:13: error: too few arguments to function 'ssl_client_new'
ssl = ssl_client_new(ssl_ctx, conn->sock[sockindex],

vtls/axtls.c:276:11: error: too few arguments to function 'ssl_client_new'
ssl = ssl_client_new(ssl_ctx, conn->sock[sockindex], NULL, 0);