cmd/go: always pass -intgosize flag to swig

[gopherbot]

by giacomo.tartari:

What steps will reproduce the problem?
cd $GOROOT/misc/swig/callback/

$ go build
# _/Users/giacomo/go/misc/swig/callback
SWIG -go: -intgosize option required but not specified

Which compiler are you using (5g, 6g, 8g, gccgo)?
6g


Which operating system are you using?
Mac OS Lion  10.7.5 x86_64


Which version are you using?  (run 'go version')
$ go version
go version devel +437d7aefea45 Mon Feb 04 00:40:11 2013 +0800 darwin/amd64

$ swig -version
SWIG Version 2.0.9
Compiled with g++ [i386-apple-darwin11.4.2]
Configured options: +pcre

[gopherbot]

Comment 1 by giacomo.tartari:

Link do golang-nuts discusion
https://groups.google.com/d/msg/golang-nuts/U-1Ih--TIKc/ZsLJL_KVH-4J

[minux]

Comment 2:

also give a hint about updating swig when swig fails with
"Unrecognized option -intgosize".

Labels changed: added priority-later, go1.1, suggested, removed priority-triage, go1.1maybe.

Status changed to Accepted.

[rsc]

Comment 3:

I believe the specific work is, since earlier versions of SWIG don't have
the flag and even the new version defaults to 32 bit int,
1) pass -intgosize 64 when the int size is 64 bits, no option otherwise.
2) perhaps recognize the 'no intgosize flag' error from SWIG and replace it
with something about needing to update to SWIG version >= x.y.z.
Ian, can you confirm this?

[ianlancetaylor]

Comment 4:

The go command should pass the -intgosize option in all cases.  SWIG now requires it.
If SWIG reports "Unrecognized option -intgosize" on stderr, they need to upgrade to SWIG
2.0.9 or later.

[minux]

Comment 5:

so the issue boils down to this:
should we support pre 2.0.9 swig for 32-bit Go 1.1?

[rsc]

Comment 6:

No.

[cookieo9]

Comment 7:

https://golang.org/cl/7331048

[ianlancetaylor]

Comment 8:

This issue was closed by revision 7c79382.

Status changed to Fixed.