mirror of
https://github.com/Zeckmathederg/glfs.git
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372 lines
11 KiB
XML
372 lines
11 KiB
XML
<?xml version="1.0" encoding="ISO-8859-1"?>
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<!DOCTYPE sect1 PUBLIC "-//OASIS//DTD DocBook XML V4.5//EN"
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"http://www.oasis-open.org/docbook/xml/4.5/docbookx.dtd" [
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<!ENTITY % general-entities SYSTEM "../../general.ent">
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%general-entities;
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<!ENTITY gdb-download-http "&gnu-http;/gdb/gdb-&gdb-version;.tar.xz">
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<!ENTITY gdb-download-ftp "&gnu-ftp;/gdb/gdb-&gdb-version;.tar.xz">
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<!ENTITY gdb-md5sum "fbd3cdae16c581e8a742cb766ba35076">
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<!ENTITY gdb-size "23 MB">
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<!ENTITY gdb-buildsize "914 MB (add 805 MB for docs; add 575 MB for tests)">
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<!ENTITY gdb-time "2.1 SBU (add 0.4 SBU for docs; add 18 SBU for tests; all using parallelism=4)">
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]>
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<sect1 id="gdb" xreflabel="GDB-&gdb-version;">
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<?dbhtml filename="gdb.html"?>
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<title>GDB-&gdb-version;</title>
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<indexterm zone="gdb">
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<primary sortas="a-GDB">GDB</primary>
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</indexterm>
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<sect2 role="package">
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<title>Introduction to GDB</title>
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<para>
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<application>GDB</application>, the GNU Project debugger, allows you
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to see what is going on <quote>inside</quote> another program while it
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executes -- or what another program was doing at the moment it crashed.
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Note that <application>GDB</application> is most effective when tracing
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programs and libraries that were built with debugging symbols and not
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stripped.
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</para>
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&lfs113_checked;
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<bridgehead renderas="sect3">Package Information</bridgehead>
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<itemizedlist spacing="compact">
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<listitem>
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<para>
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Download (HTTP): <ulink url="&gdb-download-http;"/>
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</para>
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</listitem>
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<listitem>
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<para>
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Download (FTP): <ulink url="&gdb-download-ftp;"/>
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</para>
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</listitem>
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<listitem>
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<para>
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Download MD5 sum: &gdb-md5sum;
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</para>
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</listitem>
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<listitem>
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<para>
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Download size: &gdb-size;
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</para>
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</listitem>
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<listitem>
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<para>
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Estimated disk space required: &gdb-buildsize;
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</para>
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</listitem>
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<listitem>
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<para>
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Estimated build time: &gdb-time;
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</para>
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</listitem>
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</itemizedlist>
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<!--
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<bridgehead renderas="sect3">Additional Downloads</bridgehead>
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<itemizedlist spacing="compact">
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<listitem>
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<para>
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Required patch:
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<ulink url="&patch-root;/gdb-&gdb-version;-upstream_fixes-1.patch"/>
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</para>
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</listitem>
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</itemizedlist>
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-->
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<bridgehead renderas="sect3">GDB Dependencies</bridgehead>
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<bridgehead renderas="sect4">Recommended Runtime Dependency</bridgehead>
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<para role="recommended">
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<xref linkend="six"/> (Python 3 module, required at run-time to
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use GDB scripts from various LFS/BLFS packages with Python 3
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installed in LFS)
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</para>
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<bridgehead renderas="sect4">Optional</bridgehead>
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<para role="optional">
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<xref linkend="doxygen"/>,
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<xref linkend="gcc"/> (ada, gfortran, and go are used for tests),
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<xref linkend="guile"/>,
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<!-- don't advertise python2...
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<xref linkend="python2"/>,-->
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<xref linkend="rust"/> (used for some tests),
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<xref linkend="valgrind"/>, and
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<ulink url="https://sourceware.org/systemtap/">SystemTap</ulink>
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(run-time, used for tests)
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</para>
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</sect2>
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<sect2 role="installation">
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<title>Installation of GDB</title>
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<!--
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<para>
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First, apply a patch that fixes problems when debugging programs compiled
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with <xref linkend="rust" role="nodep"/>:
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</para>
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<screen><userinput remap="pre">patch -Np1 -i ../gdb-&gdb-version;-upstream_fixes-1.patch</userinput></screen>
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-->
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<para>
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Install <application>GDB</application> by running the following
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commands:
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</para>
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<screen><userinput>mkdir build &&
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cd build &&
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../configure --prefix=/usr \
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--with-system-readline \
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--with-python=/usr/bin/python3 &&
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make</userinput></screen>
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<para>
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Optionally, to build the API documentation using
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<xref linkend="doxygen"/>, run:
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</para>
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<screen remap="doc"><userinput>make -C gdb/doc doxy</userinput></screen>
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<para>
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To test the results, issue:
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</para>
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<screen remap="test"><userinput>pushd gdb/testsuite &&
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make site.exp &&
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echo "set gdb_test_timeout 120" >> site.exp &&
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runtest
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popd</userinput></screen>
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<para>
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See <emphasis>gdb/testsuite/README</emphasis> and <ulink
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url="https://sourceware.org/gdb/wiki/TestingGDB">TestingGDB</ulink>.
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There are many problems with the test suite:
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</para>
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<itemizedlist>
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<listitem>
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<para>
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Clean directories are needed if re-running the tests. For that
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reason, make a copy of the compiled source code
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directory before the tests in case you need to run the tests again.
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</para>
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</listitem>
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<listitem>
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<para>
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Results depend on installed compilers.
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</para>
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</listitem>
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<!-- I did not see this
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<listitem>
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<para>
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There are a large number of timeouts (there is a variable
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that can be set to increase time for timeout, but
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changing it will result in a different number of tests being
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run).
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</para>
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</listitem>
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or this
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<listitem>
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<para>
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There are failures associated with system readline 6.x.
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</para>
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</listitem>
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-->
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<!--
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<listitem>
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<para>
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A few tests assume that the header file
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<filename><sys/sdt.h></filename>, part of <ulink
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url="https://sourceware.org/systemtap/">SystemTap</ulink>, is
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present.
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</para>
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</listitem>
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-->
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<!-- I don't know if this is true or not. I tested on a Haswell.
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<listitem>
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<para>
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If the test suite is run on a Skylake-based Intel CPU or newer,
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many tests will fail due to the removal of the deprecated/problematic
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libmpx library in GCC.
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</para>
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</listitem>
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-->
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<listitem>
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<para>
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<!-- for gdb-11.1, gcc-11.2 - pierre
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A test run of the test suite had about 1700 unexpected failures
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(out of over 80000 tests). Over 1370 of the failures were related
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to FORTRAN tests. -->
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<!-- for gdb-12.1, gcc-11.3.0 - bdubbs
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A test run of the test suite had a little over 200 unexpected failures
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out of over 94000 tests.-->
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<!-- for gdb-13.0, gcc-12.2.0 - bdubbs
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A test run of the test suite had 33 unexpected failures
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out of over 106000 tests. -->
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<!-- for gdb-13.2, gcc-13.1.0 - pierre -->
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A test run of the test suite had 183 unexpected failures
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out of over 105000 tests.
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</para>
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</listitem>
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<listitem>
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<para>
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On some systems, the gdb.tui test suite will fail if running over
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SSH.
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</para>
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</listitem>
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<listitem>
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<para>
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On some AMD-based systems, over 200 additional tests
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may fail due to a difference in the threading implementation
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on those CPUs.
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</para>
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</listitem>
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</itemizedlist>
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<para>
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Now, as the <systemitem class="username">root</systemitem> user:
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</para>
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<screen role="root"><userinput>make -C gdb install &&
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make -C gdbserver install</userinput></screen>
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<para>
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If you have built the API documentation, it is now in gdb/doc/doxy.
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You can install it (as the <systemitem class="username">root</systemitem>
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user):
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</para>
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<screen role="root"
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remap="doc"><userinput>install -d /usr/share/doc/gdb-&gdb-version; &&
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rm -rf gdb/doc/doxy/xml &&
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cp -Rv gdb/doc/doxy /usr/share/doc/gdb-&gdb-version;</userinput></screen>
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</sect2>
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<sect2 role="commands">
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<title>Command Explanations</title>
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<para>
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<parameter>--with-system-readline</parameter>: This switch forces
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<application>GDB</application> to use the copy of
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<application>Readline</application> installed in LFS.
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</para>
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<para>
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<parameter>--with-python=/usr/bin/python3</parameter>: This switch
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forces <application>GDB</application> to use Python 3.
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<!-- We don't advise to use python2 anymore
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Remove this switch if you have installed
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<xref linkend="python2"/> and want to use it instead of Python 3.-->
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</para>
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</sect2>
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<sect2 role="content">
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<title>Contents</title>
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<segmentedlist>
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<segtitle>Installed Programs</segtitle>
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<segtitle>Installed Library</segtitle>
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<segtitle>Installed Directories</segtitle>
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<seglistitem>
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<seg>
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gcore, gdb, gdbserver, and gdb-add-index
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</seg>
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<seg>
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libinproctrace.so
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</seg>
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<seg>
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/usr/{include,share}/gdb and /usr/share/doc/gdb-&gdb-version;
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</seg>
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</seglistitem>
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</segmentedlist>
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<variablelist>
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<bridgehead renderas="sect3">Short Descriptions</bridgehead>
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<?dbfo list-presentation="list"?>
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<?dbhtml list-presentation="table"?>
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<varlistentry id="gcore">
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<term><command>gcore</command></term>
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<listitem>
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<para>
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generates a core dump of a running program
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</para>
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<indexterm zone="gdb gcore">
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<primary sortas="b-gcore">gcore</primary>
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</indexterm>
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</listitem>
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</varlistentry>
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<varlistentry id="gdb-prog">
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<term><command>gdb</command></term>
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<listitem>
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<para>
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is the GNU Debugger
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</para>
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<indexterm zone="gdb gdb-prog">
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<primary sortas="b-gdb-prog">gdb-prog</primary>
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</indexterm>
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</listitem>
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</varlistentry>
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<varlistentry id="gdbserver">
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<term><command>gdbserver</command></term>
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<listitem>
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<para>
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is a remote server for the GNU debugger (it allows programs
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to be debugged from a different machine)
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</para>
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<indexterm zone="gdb gdbserver">
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<primary sortas="b-gdbserver">gdbserver</primary>
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</indexterm>
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</listitem>
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</varlistentry>
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<varlistentry id="gdb-add-index">
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<term><command>gdb-add-index</command></term>
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<listitem>
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<para>
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Allows adding index files to ELF binaries. This speeds up
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<command>gdb</command> start on large programs.
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</para>
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<indexterm zone="gdb gdb-add-index">
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<primary sortas="b-gdb-add-index">gdb-add-index</primary>
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</indexterm>
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</listitem>
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</varlistentry>
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<varlistentry id="libinproctrace">
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<term><filename class="libraryfile">libinproctrace.so</filename></term>
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<listitem>
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<para>
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contains functions for the in-process tracing agent. The agent
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allows for installing fast tracepoints, listing static tracepoint
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markers, probing static tracepoints markers, and starting trace
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monitoring.
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</para>
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<indexterm zone="gdb libinproctrace">
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<primary sortas="c-libinproctrace">libinproctrace.so</primary>
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</indexterm>
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</listitem>
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</varlistentry>
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</variablelist>
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</sect2>
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</sect1>
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