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[[!meta copyright="Copyright © 2007, 2008, 2010, 2011 Free Software Foundation,
Inc."]]
[[!meta license="""[[!toggle id="license" text="GFDL 1.2+"]][[!toggleable
id="license" text="Permission is granted to copy, distribute and/or modify this
document under the terms of the GNU Free Documentation License, Version 1.2 or
any later version published by the Free Software Foundation; with no Invariant
Sections, no Front-Cover Texts, and no Back-Cover Texts. A copy of the license
is included in the section entitled [[GNU Free Documentation
License|/fdl]]."]]"""]]
[[!tag open_issue_gdb]]
Here's what's to be done for maintaining GNU GDB.
[[!toc levels=2]]
# [[General information|/gdb]]
# [[Sources|source_repositories/gdb]]
# Configuration
Last reviewed up to the [[Git mirror's a6276821b897bb7b1140e156c189badedd6adddc
(2011-07-04) sources|source_repositories/gdb]].
* Globally
* a.out, COFF, PE image support and 64 bit support are not interesting.
* In the testsuites, `.exp` and `.d` files very likely should not only
care for `*-*-linux*`, but also `*-*-gnu*`. (If the need to be
conditionalized like this at all.)
* `bfd/`
See [[binutils]].
* `libdecnumber/`
Should/can probably align to GNU/Linux.
* Have a look at config/i386/i386gnu.mh.
* configure.tgt
* glibc-tdep et al. also for GNU/Hurd?
# Build
Here's a log of a binutils build run; this is from our [[Git repository's
d53cbf2a89a11bb98304490663a75229116d3e5a (2011-07-04)
sources|source_repositories/binutils]], run on kepler.SCHWINGE and
coulomb.SCHWINGE.
$ export LC_ALL=C
$ ../master/configure --prefix="$PWD".install SHELL=/bin/dash CC=gcc-4.6 CXX=g++-4.6 --disable-werror 2>&1 | tee log_build
[...]
$ make 2>&1 | tee log_build_
[...]
Different hosts may default to different shells and compiler versions; thus
harmonized.
There are several occurences of *error: dereferencing type-punned pointer will
break strict-aliasing rules* in the MIG-generated stub files; thus no `-Werror`
until that is resolved.
This takes up around 200 MiB, and needs roughly TODO min on kepler.SCHWINGE,
and takes up areound 130 MiB, and needs roughly TODO min on coulomb.SCHWINGE.
## Analysis
x86 GNU/Linux' and GNU/Hurd's configurations are slightly different, thus mask
out most of the differences that are due to GNU/Linux supporting more core file
formats, and more emulation vectors.
$ diff -wu <(ssh kepler.SCHWINGE 'cd tmp/source/gdb/ && cat hurd/master.build/log_build* | sed -e "s%\(/media/data\)\?${PWD}%[...]%g"' | sed -f open_issues/gdb/log_build-linux.sed) <(ssh coulomb.SCHWINGE 'cd tmp/gdb/ && cat hurd/master.build/log_build* | sed "s%\(/media/erich\)\?${PWD}%[...]%g"' | sed -f open_issues/gdb/log_build-hurd.sed) > open_issues/gdb/log_build.diff
[[log_build.diff]].
* Why do we specify `-D_GNU_SOURCE`, and GNU/Linux doesn't?
* Why does GNU/Linux have an additional `-ldl -rdynamic` when linking `gdb`?
# Install
$ make install 2>&1 | tee log_install
[...]
This takes up around 50 MiB, and needs roughly TODO min on kepler.SCHWINGE, and
takes up areound 45 MiB, and needs roughly TODO min on coulomb.SCHWINGE.
## Analysis
$ diff -wu <(ssh kepler.SCHWINGE 'cd tmp/source/gdb/ && cat hurd/master.build/log_install | sed -e "s%\(/media/data\)\?${PWD}%[...]%g"' | sed -f open_issues/gdb/log_install-linux.sed) <(ssh coulomb.SCHWINGE 'cd tmp/gdb/ && cat hurd/master.build/log_install | sed "s%\(/media/erich\)\?${PWD}%[...]%g"' | sed -f open_issues/gdb/log_install-hurd.sed) > open_issues/gdb/log_install.diff
[[log_install.diff]].
* `libtool: finish`: `ldconfig` is not run for the Hurd.
# Testsuite
On GNU/Hurd, hampered by the [[term_blocking]] issue.
$ make -k check
[...]
This needs roughly TODO min on kepler.SCHWINGE, and TODO min on
coulomb.SCHWINGE.
$ ssh kepler.SCHWINGE 'cd tmp/source/gdb/ && sed < hurd/master.build/gdb/testsuite/gdb.sum -e "s%\(/media/data\)\?${PWD}%[...]%g"' > open_issues/gdb/sum_linux
$ ssh coulomb.SCHWINGE 'cd tmp/gdb/ && sed < hurd/master.build/gdb/testsuite/gdb.sum -e "s%\(/media/erich\)\?${PWD}%[...]%g"' > open_issues/gdb/sum_hurd
Comparing the results files, [[sum_linux]] to [[sum_hurd]]:
$ diff -u -F ^Running open_issues/gdb/sum_linux open_issues/gdb/sum_hurd
TODO
## Analysis
TODO.
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