153 lines
6.0 KiB
Diff
153 lines
6.0 KiB
Diff
From FEDORA_PATCHES Mon Sep 17 00:00:00 2001
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From: =?UTF-8?q?Alexandra=20H=C3=A1jkov=C3=A1?= <ahajkova@redhat.com>
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Date: Mon, 10 Jan 2022 13:00:50 +0100
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Subject: gdb-rhbz2024875-expand-documentation-for-debuginfod.patch
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;;Backport upstream commit from Aaron Merey
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;;3ea44f21299 gdb.texinfo: Expand documentation for debuginfod
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gdb.texinfo: Expand documentation for debuginfod
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Add section describing GDB's usage of debuginfod.
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Refer to this new section in the description of the '--with-debuginfod'
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configure option.
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Mention debuginfod in the 'Separate Debug Files' section.
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diff --git a/gdb/doc/gdb.texinfo b/gdb/doc/gdb.texinfo
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--- a/gdb/doc/gdb.texinfo
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+++ b/gdb/doc/gdb.texinfo
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@@ -184,6 +184,7 @@ software in general. We will miss him.
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the operating system
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* Trace File Format:: GDB trace file format
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* Index Section Format:: .gdb_index section format
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+* Debuginfod:: Download debugging resources with @code{debuginfod}
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* Man Pages:: Manual pages
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* Copying:: GNU General Public License says
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how you can copy and share GDB
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@@ -21373,7 +21374,9 @@ For the ``build ID'' method, @value{GDBN} looks in the
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a file named @file{@var{nn}/@var{nnnnnnnn}.debug}, where @var{nn} are the
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first 2 hex characters of the build ID bit string, and @var{nnnnnnnn}
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are the rest of the bit string. (Real build ID strings are 32 or more
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-hex characters, not 10.)
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+hex characters, not 10.) @value{GDBN} can automatically query
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+@code{debuginfod} servers using build IDs in order to download separate debug
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+files that cannot be found locally. For more information see @ref{Debuginfod}.
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@end itemize
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So, for example, suppose you ask @value{GDBN} to debug
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@@ -21394,6 +21397,10 @@ debug information files, in the indicated order:
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@file{/usr/lib/debug/usr/bin/ls.debug}.
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@end itemize
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+If the debug file still has not been found and @code{debuginfod}
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+(@pxref{Debuginfod}) is enabled, @value{GDBN} will attempt to download the
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+file from @code{debuginfod} servers.
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+
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@anchor{debug-file-directory}
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Global debugging info directories default to what is set by @value{GDBN}
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configure option @option{--with-separate-debug-dir}. During @value{GDBN} run
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@@ -38746,12 +38753,12 @@ Use the curses library instead of the termcap library, for text-mode
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terminal operations.
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@item --with-debuginfod
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-Build @value{GDBN} with libdebuginfod, the debuginfod client library.
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-Used to automatically fetch source files and separate debug files from
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-debuginfod servers using the associated executable's build ID. Enabled
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-by default if libdebuginfod is installed and found at configure time.
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-debuginfod is packaged with elfutils, starting with version 0.178. You
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-can get the latest version from `https://sourceware.org/elfutils/'.
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+Build @value{GDBN} with @file{libdebuginfod}, the @code{debuginfod} client
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+library. Used to automatically fetch ELF, DWARF and source files from
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+@code{debuginfod} servers using build IDs associated with any missing
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+files. Enabled by default if @file{libdebuginfod} is installed and found
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+at configure time. For more information regarding @code{debuginfod} see
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+@ref{Debuginfod}.
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@item --with-libunwind-ia64
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Use the libunwind library for unwinding function call stack on ia64
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@@ -47012,6 +47019,82 @@ switch (die->tag)
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@}
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@end smallexample
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+@node Debuginfod
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+@appendix Download debugging resources with Debuginfod
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+@cindex debuginfod
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+
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+@code{debuginfod} is an HTTP server for distributing ELF, DWARF and source
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+files.
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+
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+With the @code{debuginfod} client library, @file{libdebuginfod}, @value{GDBN}
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+can query servers using the build IDs associated with missing debug info,
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+executables and source files in order to download them on demand.
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+
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+For instructions on building @value{GDBN} with @file{libdebuginfod},
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+@pxref{Configure Options,,--with-debuginfod}. @code{debuginfod} is packaged
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+with @code{elfutils}, starting with version 0.178. See
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+@uref{https://sourceware.org/elfutils/Debuginfod.html} for more information
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+regarding @code{debuginfod}.
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+
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+@menu
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+* Debuginfod Settings:: Configuring debuginfod with @value{GDBN}
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+@end menu
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+
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+@node Debuginfod Settings
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+@section Debuginfod Settings
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+
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+@value{GDBN} provides the following commands for configuring @code{debuginfod}.
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+
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+@table @code
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+@kindex set debuginfod
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+@anchor{set debuginfod}
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+@item set debuginfod
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+@itemx set debuginfod on
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+@cindex enable debuginfod
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+@value{GDBN} will attempt to query @code{debuginfod} servers when missing debug
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+info or source files.
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+
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+@item set debuginfod off
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+@value{GDBN} will not attempt to query @code{debuginfod} servers when missing
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+debug info or source files. By default, @code{debuginfod} is set to @code{off}
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+for non-interactive sessions.
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+
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+@item set debuginfod ask
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+@value{GDBN} will prompt the user to enable or disable @code{debuginfod} before
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+attempting to perform the next query. By default, @code{debuginfod} is set to
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+@code{ask} for interactive sessions.
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+
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+@kindex show debuginfod status
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+@item show debuginfod status
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+Show whether @code{debuginfod} is set to @code{on}, @code{off} or @code{ask}.
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+
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+@kindex set debuginfod urls
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+@cindex configure debuginfod URLs
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+@item set debuginfod urls
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+@itemx set debuginfod urls @var{urls}
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+Set the space-separated list of URLs that @code{debuginfod} will attempt to
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+query. Only @code{http://}, @code{https://} and @code{file://} protocols
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+should be used. The default value of @code{debuginfod urls} is copied from
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+the @var{DEBUGINFOD_URLS} environment variable.
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+
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+@kindex show debuginfod urls
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+@item show debuginfod urls
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+Display the list of URLs that @code{debuginfod} will attempt to query.
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+
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+@kindex set debuginfod verbose
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+@cindex debuginfod verbosity
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+@item set debuginfod verbose
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+@itemx set debuginfod verbose @var{n}
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+Enable or disable @code{debuginfod}-related output. Use a non-zero value
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+to enable and @code{0} to disable. @code{debuginfod} output is shown by
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+default.
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+
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+@kindex show debuginfod verbose
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+@item show debuginfod verbose
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+Show the current verbosity setting.
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+
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+@end table
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+
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@node Man Pages
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@appendix Manual pages
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@cindex Man pages
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