2011/8/22 Ian Lance Taylor <iant@xxxxxxxxxx>:
> Maciej Bliziński <maciej@xxxxxxxxxxx> writes:
>
>> type Iovec_len_t int32
>> type Iovec struct { Base _caddr_t; Len Iovec_len_t; }
>> type Msghdr_controllen_t
>> type Msghdr struct { Name *byte; Namelen uint32; Iov *Iovec; Iovlen
>> int32; msg_accrights _caddr_t; msg_accrightslen int32; }
>>
>> The first observation is that on sparc there's nothing after the
>> Msghdr_controllen_t. Does anyone have an advice where to look to make
>> it build?
>
> Which version of gcc are you building? Best to stick with mainline for
> this.
I started with the gcc-4.6.1 tarball.
> If you are using mainline, then what does the definition of "struct
> msghdr" look like in <sys/socket.h> (it may be defined in some header
> file #included by <sys/socket.h>)?
maciej@unstable9s :~/src/opencsw/pkg/gcc4/branches/gccgo > ggrep -A14
"struct msghdr {" /usr/include/sys/socket.h
struct msghdr {
void *msg_name; /* optional address */
socklen_t msg_namelen; /* size of address */
struct iovec *msg_iov; /* scatter/gather array */
int msg_iovlen; /* # elements in msg_iov */
#if defined(_XPG4_2) || defined(_KERNEL)
void *msg_control; /* ancillary data */
socklen_t msg_controllen; /* ancillary data buffer len */
int msg_flags; /* flags on received message */
#else
caddr_t msg_accrights; /* access rights sent/received */
int msg_accrightslen;
#endif /* defined(_XPG4_2) || defined(_KERNEL) */
};
> Also, look for "type _msghdr" in gen-sysinfo.go. What does the type
> look like?
Splitting into multi-line:
type _msghdr struct {
msg_name *byte;
msg_namelen uint32;
msg_iov *_iovec;
msg_iovlen int32;
msg_accrights _caddr_t;
msg_accrightslen int32;
}
> The definition of Msghdr_controllen_t is generated by the shell script
> mksysinfo.sh. Something is going wrong there.
Looking at mksysinfo.sh, the first thing I noticed is the use of the
"if ! ...; then ..; fi" construct together with "#!/bin/sh". On
Solaris, /bin/sh does not support the "if ! ..." syntax. You need to
say "if ...; then nothing; else ...; fi".
#!/bin/sh
# Invalid
if ! false; then
echo "Test 1"
fi
# Valid
if false; then
echo -n # nothing
else
echo "Test 2"
fi
The other option is to use a different shell.
What's the exact problem with Msghdr_controllen_t I don't know yet, I
will look at the shell script more closely and reply again.
Maciej
