[csw-maintainers] GAR: Adding a /opt/csw/lib/foo/64 --> /opt/csw/lib/foo/{amd64, sparcv9} link

[Maciej (Matchek) Blizinski]

On Mon, Nov 23, 2009 at 5:56 PM, Philip Brown <phil at bolthole.com> wrote:
> On Mon, Nov 23, 2009 at 4:41 AM, Maciej (Matchek) Blizinski
> <maciej at opencsw.org> wrote:
>> I'm working on a library package with the *.so files in
>> /opt/csw/lib/foo.  The package will have 64-bit support, so the shared
>> objects will be:
>>
>> /opt/csw/lib/foo/*.so
>> /opt/csw/lib/foo/sparcv9/*.so
>> /opt/csw/lib/foo/amd64/*.so
>>
>> I've noticed that CSWcommon provides a symlink: /opt/csw/lib/64.  It
>> points to amd64 or sparcv9 depending on the host architecture.  This
>> link is needed to provide a architecture independent -L flag for
>> 64-bit builds: /opt/csw/lib/foo/64.
>>
>> I guess that something along the lines of ln -s sparcv9
>> /opt/csw/lib/foo/64, or amd64, depending on the architecture.  What's
>> the right GAR idiom for it?  Should it be a post-merge target?
>>
>
> Eh, that's just a convention. If the library (or packages USING the
> library) work as-is, there's no need for you to be making those
> symlinks.

It seems to me as those links are very useful.  When you have the 64
--> {sparcv9,amd64} symlinks, you can say:

LD_OPTIONS = -R/opt/csw/lib/$ISALIST -R/opt/csw/lib/64

...and it will work on both sparcv9 and amd64.

Here's how I did it in GAR:

post-merge:
        if [ "$(GARCH)" = sparc ]; then \
                gln -sf sparc9 $(PKGROOT)$(libdir)/64; \
        elif [ "$(GARCH)" = i386 ]; then \
                gln -sf amd64 $(PKGROOT)$(libdir)/64; \
        fi
        @$(MAKECOOKIE)

It created the right structure:

maciej at build8s [build8s]:~/src/opencsw/pkg/nspr/trunk > tree
work/solaris8-sparc/pkgroot/opt/csw/lib/nspr
work/solaris8-sparc/pkgroot/opt/csw/lib/nspr
|-- 64 -> sparc9
|-- cpu
|   `-- sparcv8plus
|       `-- libnspr_flt4.so
|-- libnspr4.so -> libnspr4.so.8
|-- libnspr4.so.8
|-- libplc4.so -> libplc4.so.8
|-- libplc4.so.8
|-- libplds4.so -> libplds4.so.8
|-- libplds4.so.8
`-- sparcv9
    |-- libnspr4.so -> libnspr4.so.8
    |-- libnspr4.so.8
    |-- libplc4.so -> libplc4.so.8
    |-- libplc4.so.8
    |-- libplds4.so -> libplds4.so.8
    `-- libplds4.so.8

3 directories, 14 files

After making the package:

d none /opt/csw/lib/nspr 0755 root bin
s none /opt/csw/lib/nspr/64=sparcv9
(...)

I'll be able now to create NSS packages using -L/opt/csw/lib/nspr/64.