Hello List,
I have written a program which uses SocketCAN for CAN communication.
The development takes place under Ubuntu Linux and compilation is fine
there (also cross-compilation for an embedded ARM Linux).
But when I compile my program under Scientific Linux 6.7, I get the
following errors:
"
In file included from socket_can/receivethread.h:6,
from socket_can/receivethread.c:4:
/usr/include/linux/can.h:81: error: expected specifier-qualifier-list
before 'sa_family_t'
socket_can/receivethread.c: In function 'receivethread_init':
socket_can/receivethread.c:52: error: 'struct sockaddr_can' has no
member named 'can_family'
socket_can/receivethread.c:53: error: 'struct sockaddr_can' has no
member named 'can_ifindex'
"
Searching for the definition of sa_family_t gave a lot of usages,
but no definition:
$ cd /usr/include/linux
$ grep -r sa_family_t
llc.h: sa_family_t sllc_family; /* AF_LLC */
llc.h: sa_family_t sllc_arphrd; /* ARPHRD_ETHER */
llc.h: unsigned char __pad[__LLC_SOCK_SIZE__ - sizeof(sa_family_t) * 2 -
rose.h: sa_family_t srose_family;
rose.h: sa_family_t srose_family;
x25.h: sa_family_t sx25_family; /* Must be AF_X25 */
if_pppox.h: sa_family_t sa_family; /* address
family, AF_PPPOX */
if_pppox.h: sa_family_t sa_family; /* address family, AF_PPPOX */
in.h: sa_family_t sin_family; /* Address family
*/
ax25.h: sa_family_t sax25_family;
ipx.h: sa_family_t sipx_family;
netlink.h:#include <linux/socket.h> /* for sa_family_t */
netlink.h: sa_family_t nl_family; /* AF_NETLINK */
can.h: sa_family_t can_family;
phonet.h: sa_family_t spn_family;
phonet.h: __u8 spn_zero[sizeof(struct sockaddr) - sizeof(sa_family_t) -
3];
un.h: sa_family_t sun_family; /* AF_UNIX */
irda.h: sa_family_t sir_family; /* AF_IRDA */
atalk.h: sa_family_t sat_family;
If I add the typedef to socket.h, everything is fine until the next
kernel update:
typedef unsigned short sa_family_t;
The system is:
$ uname -a
Linux sl67-x64 2.6.32-573.12.1.el6.x86_64 #1 SMP Tue Dec 15 08:24:23 CST
2015 x86_64 x86_64 x86_64 GNU/Linux
Any opinion on this?
Best regards,
André
