Re: build failures on Solaris

[Guy Harris via tcpdump-workers <tcpdump-workers () lists tcpdump org>]

> --- Begin Message ---
>
>
> From: Guy Harris <gharris () sonic net>
>
> Date: Mon, 2 Aug 2021 14:31:18 -0700
>
> On Jul 31, 2021, at 3:37 AM, Denis Ovsienko via tcpdump-workers <tcpdump-workers () lists tcpdump org> wrote:
>
> > ##### Solaris 11 with GCC #####
> > This is the opposite: the pre-compile libpcap feature test programs
> > fail to link so all libpcap feature tests fail. However, libpcap is
> > detected as available and the build process resorts to missing/ and
> > produces a binary of tcpdump that is mostly functional:
> >
> > $ /tmp/tcpdump_build_matrix.XX06MD.a/bin/tcpdump -D
> > /tmp/tcpdump_build_matrix.XX06MD.a/bin/tcpdump: illegal option -- D
> >
> > The problem seems to be that the feature test linking instead of using
> > the flags returned by pcap-config points exactly to the 32-bit version
> > of libpcap and fails:
> >
> > $ pcap-config --libs
> > -L/usr/lib  -lpcap
>
>         solaris11$ /usr/bin/pcap-config --libs
>         -L/usr/lib  -lpcap
>         solaris11$ /usr/bin/amd64/pcap-config --libs
>         -L/usr/lib/amd64 -R/usr/lib/amd64 -lpcap
>
> on my x86-64 Solaris 11 VM.
>
> From the Solaris 64-bit Developer's Guide:
>
>         http://math-atlas.sourceforge.net/devel/assembly/816-5138.pdf
>
> the equivalent of "amd64" on SPARC is probably "sparcv9".
>
> So tcpdump (and anything else using libpcap) should, on Solaris, determine the target architecture and run the 
> appropriate version of pcap-config.
>
> I'll look at that.
>
> (Apropos of nothing, that Sun document also says of the 64-bit SPARC ABI:
>
>         Structure passing and return are accomplished differently. Small data structures and some floating point 
> arguments are now passed directly in registers.
>
> I'm curious which, if any, ABIs pass data structures *and unions* that would fit in a single register in a register.
>
> --- End Message ---
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