[task #15481] X11 libraries for Ghostscript

[Mohammad Akhlaghi]

URL:
  <https://savannah.nongnu.org/task/?15481>

                 Summary: X11 libraries for Ghostscript
                 Project: Reproducible paper template
            Submitted by: makhlaghi
            Submitted on: Tue 03 Dec 2019 04:17:15 PM UTC
         Should Start On: Tue 03 Dec 2019 12:00:00 AM UTC
   Should be Finished on: Tue 03 Dec 2019 12:00:00 AM UTC
                Category: Software
                Priority: 5 - Normal
                  Status: Postponed
                 Privacy: Public
        Percent Complete: 0%
             Assigned to: None
             Open/Closed: Open
         Discussion Lock: Any
                  Effort: 0.00

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Details:

Currently the installed Ghostscript in the template uses the host's X11
libraries. For example in [1] you can see the full list of libraries that the
template's Ghostscript depends on.

This can cause problems on some systems, for example on one Ubuntu 18.04.3
LTS, `libXext' (X11 miscellaneous extensions library) wasn't present during
the build of Ghostscript, and it complained with `ld: cannot find -lXext'. 

We should add native builds of the necessary (and possible!) X11 libraries
also. Until then, we should put a check so when its necessary, the user knows
what is missing before starting to compile Ghostscript.

[1] List of the libraries linked with the template's Ghoscript:

$ ldd .local/bin/gs
        linux-vdso.so.1 (0x00007ffd3c125000)
        libXt.so.6 => /usr/lib/libXt.so.6 (0x00007efdbf8cf000)
        libSM.so.6 => /usr/lib/libSM.so.6 (0x00007efdbf8c4000)
        libICE.so.6 => /usr/lib/libICE.so.6 (0x00007efdbf8a7000)
        libXext.so.6 => /usr/lib/libXext.so.6 (0x00007efdbf892000)
        libX11.so.6 => /usr/lib/libX11.so.6 (0x00007efdbf752000)
        libm.so.6 => /usr/lib/libm.so.6 (0x00007efdbf60c000)
        libdl.so.2 => /PROJECT/BUILD/DIRECTORY/software/installed/lib/libdl.so.2
(0x00007efdbf605000)
        libidn.so.12 => /usr/lib/libidn.so.12 (0x00007efdbf5d0000)
        libpaper.so.1 => /usr/lib/libpaper.so.1 (0x00007efdbf5ca000)
        libfontconfig.so.1 => /usr/lib/libfontconfig.so.1 (0x00007efdbf582000)
        libpthread.so.0 =>
/PROJECT/BUILD/DIRECTORY/software/installed/lib/libpthread.so.0
(0x00007efdbf560000)
        libc.so.6 => /usr/lib/libc.so.6 (0x00007efdbf399000)
        libuuid.so.1 => /usr/lib/libuuid.so.1 (0x00007efdbf38e000)
        libxcb.so.1 => /usr/lib/libxcb.so.1 (0x00007efdbf364000)
        /lib64/ld-linux-x86-64.so.2 => /usr/lib64/ld-linux-x86-64.so.2
(0x00007efdc1091000)
        libfreetype.so.6 => /usr/lib/libfreetype.so.6 (0x00007efdbf296000)
        libexpat.so.1 => /usr/lib/libexpat.so.1 (0x00007efdbf269000)
        libXau.so.6 => /usr/lib/libXau.so.6 (0x00007efdbf264000)
        libXdmcp.so.6 => /usr/lib/libXdmcp.so.6 (0x00007efdbf25a000)
        libbz2.so.1.0 =>
/PROJECT/BUILD/DIRECTORY/software/installed/lib/libbz2.so.1.0
(0x00007efdbf247000)
        libpng16.so.16 => /usr/lib/libpng16.so.16 (0x00007efdbf20f000)
        libz.so.1 => /PROJECT/BUILD/DIRECTORY/software/installed/lib/libz.so.1
(0x00007efdbf1f2000)
        libharfbuzz.so.0 => /usr/lib/libharfbuzz.so.0 (0x00007efdbf0ee000)
        libglib-2.0.so.0 => /usr/lib/libglib-2.0.so.0 (0x00007efdbefc7000)
        libgraphite2.so.3 => /usr/lib/libgraphite2.so.3 (0x00007efdbefa2000)
        libpcre.so.1 => /usr/lib/libpcre.so.1 (0x00007efdbef2f000)





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