Re: build failures on Solaris

[Denis Ovsienko via tcpdump-workers <tcpdump-workers () lists tcpdump org>]

> --- Begin Message ---
>
>
> From: Denis Ovsienko <denis () ovsienko info>
>
> Date: Mon, 9 Aug 2021 00:01:43 +0100
>
> On Sun, 8 Aug 2021 12:02:53 -0700
> Guy Harris <gharris () sonic net> wrote:
>
> [...]
> > I've checked in a change to explicitly tell CMake "this is a C-only
> > project, don't check for a C++ compiler", so it should now think it's
> > building 64-bit when building with GCC.
> >
> > See whether that fixes things.
>
> Thank you for investigating this problem and making the changes. All
> results below come from the unstable11s host (with OpenCSW packages).
> I confirm this change has fixed GCC+CMake case when building tcpdump
> with the system libpcap (4 builds), in that CMake starts to detect
> libpcap features it did not before, for example:
>
> -- Looking for pcap_findalldevs
> -- Looking for pcap_findalldevs - found
> ("tcpdump -D" works, although does not print anything)
>
> However, in the same context building tcpdump with local libpcap in
> ../libpcap (4 builds) no longer works, in that the resulting tcpdump
> binary segfaults itself and makes ldd segfault:
>
> ldd /tmp/tcpdump_build_matrix.XXYkrCSb/bin/tcpdump
> ldd: /tmp/tcpdump_build_matrix.XXYkrCSb/bin/tcpdump: execution failed
> due to signal 11 (core dumped)
>
> file /tmp/tcpdump_build_matrix.XXYkrCSb/bin/tcpdump
> /tmp/tcpdump_build_matrix.XXYkrCSb/bin/tcpdump: ELF 64-bit MSB
> executable SPARCV9 Version 1, dynamically linked, not stripped, no
> debugging information available
>
> /tmp/tcpdump_build_matrix.XXYkrCSb/bin/tcpdump --version
> Segmentation Fault (core dumped)
>
> Autoconf build with GCC works with both the system and the local
> libpcap (8 builds), as before.
>
> Sun C works with both CMake and Autoconf, with both the system and the
> local libpcap (16 builds), as before.
>
> Let me know in case you need more testing/diagnostics.
>
> -- 
>     Denis Ovsienko
>
> --- End Message ---
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