Something messed up in linux emulation

[Kevin Oberman]

On Sun, Jun 10, 2018 at 1:31 PM, Theron <theron.tarigo at gmail.com> wrote:

>
> I think you miss my point. I know how to install  linux-c7-libpng. My
> concern is why this whole set of ports was not already installed.
>
> Sorry to have been unclear.  I meant to suggest that linux-c7-libpng was
> already "installed" i.e. registered as such, but that its files were
> missing due to some other problem.
>
> I kept adding one port after another, but I have no idea where that ends.
> The ports  system should install all dependencies automatically. Since only
> a single linux emulation port is a dependency, I guessed that linux-c7-gtk2
> is the culprit, bu reinstalling it generated that odd message:
> Installing linux-c7-gtk2-2.24.31...
> /compat/linux/usr/bin/gtk-query-immodules-2.0-32: error while loading
> shared libraries: libpng15.so.15: cannot open shared object file: No such
> file or directory
>
> Looking at linux-c7-gtk2, I see "USE_LINUX=      atk gdkpixbuf2 pango
> xorglibs". I have already re-installed atk and pango, but the others are
> not installed. Since pkg shows that these are not installed, I would have
> expected that building linux-c7-gtk2 to have installed them.
> /usr/ports/Mk/Uses/linux.mk states "# USE_LINUX     List of Linux
> packages to depend on." So I am baffled as to why these ports are not being
> installed. (I have tried both portmaster(8) and a simple make(1).) Clearly
> something is broken here and it looks a lot like the ports system, mabey
> linux.mk.
>
> Deleting /compat/linux/usr/lib/libpng15.so.15* (but leaving
> linux-c7-libpng "installed", although damaged) and then installing
> linux-c7-gtk2 seems to reproduce the behavior you are seeing.  If I remove
> linux-c7-libpng completely, by 'pkg remove' or 'make deinstall', then a
> 'make install' for linux-c7-gtk2 installs the libpng as expected.
>
> On your system, is the Linux libpng port not installed at all, or is there
> some possibility the installation is damaged?
>
> The linux gtk2 has a USE_LINUX for gdkpixbuf2, which in turn has a
> USE_LINUX for png.  While ideally installing a port would check for all
> needed files, this doesn't seem to work, at least for the Linux ports.
>

Thanks for lookingat this, but my concern is that installing
nspluginwrapper failed to trigger the installation of these dependencies.

The system does NOT think any of these ports are installed. I ran "pkg
info" on all of them and none showed up as installed. None was installed
when I re-installed linux-c7-gtk2. That includes atk, pango,  gdkpixbf2 or
png (the linux-c7 versions). linux-c7-gtk2 sis install with only the
message about the lack of libpng-15.so.15 that I mentioned. I suspect that
these ports have been missing since I moved to 11.0-BETA, deleted all ports
and reinstalled. At that time nspluginwraper installed without failing, but
it looks like the USES_LINUX dependencies were not re-installed, so any
problem probably goes back that far, though it is possible that they were
deleted more recently.

To be clear, I have been using BSD for over 40 years, originally when doing
some work for UC Davis and FreeBSD for over 20 years. I am quite conversant
(though not expert) in make and Makefiles. I have been using ports for over
20 years and pkg since back when bapt@ was still doing beta testing. my
concern is that these ports were clearly NOT installed and that I could
install nspluginwrapper and, later, linux-c7-gtk2 without the ports system
noticing the missing dependencies.

--
Kevin Oberman, Part time kid herder and retired Network Engineer
E-mail: rkoberman at gmail.com
PGP Fingerprint: D03FB98AFA78E3B78C1694B318AB39EF1B055683