glfs/general/prog/gcc.xml

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  <!ENTITY % general-entities SYSTEM "../../general.ent">
  %general-entities;

  <!ENTITY gcc-download-http  "http://mirrors.rcn.net/pub/sourceware/gcc/releases/gcc-&gcc-version;/gcc-&gcc-version;.tar.bz2">
  <!ENTITY gcc-download-ftp   "ftp://mirrors.rcn.net/pub/sourceware/gcc/releases/gcc-&gcc-version;/gcc-&gcc-version;.tar.bz2">
  <!ENTITY gcc-size           "27.2 MB">
  <!ENTITY gcc-buildsize      "1.53 GB">
  <!ENTITY gcc-time           "48.94 SBU">

  <!ENTITY gnat-download-http " ">
  <!ENTITY gnat-download-ftp  "ftp://cs.nyu.edu/pub/gnat/3.15p/gnat-3.15p-i686-pc-redhat71-gnu-bin.tar.gz">
  <!ENTITY gnat-size          "13.5 MB">
  <!ENTITY gnat-buildsize     "48 MB">
  <!ENTITY gnat-time          "0.01 SBU">
]>

<sect1 id="gcc" xreflabel="GCC-&gcc-version;">
<sect1info>
<othername>$LastChangedBy$</othername>
<date>$Date$</date>
</sect1info>
<?dbhtml filename="gcc.html" ?>
<title>GCC-&gcc-version;</title>

<sect2>
<title>Introduction to <application><acronym>GCC</acronym></application></title>

<para>The <application><acronym>GCC</acronym></application> package contains 
<acronym>GNU</acronym> compilers. This is useful for compiling programs 
written in <application>C</application>, <application>C++</application>, 
<application>Fortran</application>, <application>Java</application>, 
<application>Objective C</application> and 
<application>Ada</application>.</para>

<sect3><title>Package Information</title>
<itemizedlist spacing='compact'>
<listitem><para>Download (HTTP): <ulink
url="&gcc-download-http;"/></para></listitem>
<listitem><para>Download (FTP): <ulink
url="&gcc-download-ftp;"/></para></listitem>
<listitem><para>Download size: &gcc-size;</para></listitem>
<listitem><para>Estimated disk space required:
&gcc-buildsize;</para></listitem>
<listitem><para>Estimated build time:
&gcc-time;</para></listitem></itemizedlist>
</sect3>

<sect3><title>Additional Downloads</title>
<itemizedlist spacing='compact'>
<listitem><para>Required Patch: <ulink 
url="&patch-root;/gcc-&gcc-version;-no_fixincludes-1.patch"/></para></listitem>
<listitem><para>Required Patch: <ulink 
url="&patch-root;/gcc-&gcc-version;-linkonce-1.patch"/></para></listitem>
<listitem><para>Test Suite: <ulink 
url="http://mirrors.rcn.net/pub/sourceware/gcc/releases/gcc-&gcc-version;/gcc-testsuite-&gcc-version;.tar.bz2"/></para>
</listitem>
</itemizedlist></sect3>

<sect3><title><application><acronym>GCC</acronym></application> 
Dependencies</title>
<sect4><title>Recommended</title>
<itemizedlist spacing='compact'>
<listitem><para><xref linkend="dejagnu"/></para></listitem>
</itemizedlist>
</sect4></sect3>

</sect2>

<sect2>
<title>Installation of <application><acronym>GCC</acronym></application></title>

<para>If you plan to compile Ada, you will need to install
<application><acronym>GNAT</acronym></application> temporarily to
satisfy the circular dependency when you recompile
<application><acronym>GCC</acronym></application> to include
<application>Ada</application>.</para>

<sect3><title>Package information</title>
<itemizedlist spacing='compact'>
<listitem><para>Download (HTTP): <ulink
url="&gnat-download-http;"/></para></listitem>
<listitem><para>Download (FTP): <ulink
url="&gnat-download-ftp;"/></para></listitem>
<listitem><para>Download size: &gnat-size;</para></listitem>
<listitem><para>Estimated disk space required:
&gnat-buildsize;</para></listitem>
<listitem><para>Estimated build time:
&gnat-time;</para></listitem></itemizedlist>
</sect3>

<sect3><title><application><acronym>GNAT</acronym></application> 
dependencies</title>
<sect4><title>Required</title>
<para><xref linkend="tcsh"/></para></sect4>
</sect3>

</sect2>

<sect2>
<title>Installation of <application><acronym>GNAT</acronym></application>
</title>

<para>Install <application><acronym>GNAT</acronym></application> by running the 
following commands:</para>

<screen><userinput><command>./doconfig</command></userinput></screen>

<para>The above script will ask you how and where you would like to install
<application><acronym>GNAT</acronym></application>. To avoid conflicts with the 
system <command>gcc</command>, the package will be installed in a separate 
directory, that can later be removed from the system.</para>

<para>In response to the questions asked by the <command>doconfig</command> 
script, enter <userinput>3</userinput> in response to the first question
and <userinput>/opt/gnat</userinput> in response to the second question.</para>

<para>To finish the install, run:</para>
<screen><userinput><command>./doinstall</command></userinput></screen>

<para>The <application><acronym>GNAT</acronym></application> compiler can be 
invoked by executing the <command>gcc</command> binary installed by the above 
script.</para>

<para>Prepare to compile <application>GCC</application> by placing the 
<application>GNAT</application> <command>gcc</command> at the beginning of 
the <envar>PATH</envar> variable by using the following commands:</para>

<screen><userinput><command>PATH_HOLD=$PATH &amp;&amp;
export PATH=/opt/gnat/bin:$PATH</command></userinput></screen>

</sect2>

<sect2><title>Return to Installation of 
<application><acronym>GCC</acronym></application></title>

<para>Install <application><acronym>GCC</acronym></application> by running the 
following commands:</para>

<important><para>The installation process may overwrite your existing 
<application><acronym>GCC</acronym></application> compiler and libraries. It 
is highly recommended that you have the <application>Tcl</application>, 
<application>Expect</application> and <application>DejaGnu</application> 
packages installed, as well as unpacking the 
<application><acronym>GCC</acronym></application> testsuite tarball before 
beginning the build.</para>

<para>Do not continue with the <command>make install</command> command until 
you're confident the build was successful. You can compare your test results 
with those found at <ulink 
url="http://gcc.gnu.org/ml/gcc-testresults/"/>. There's also an i686 platform 
test result produced by an <acronym>LFS</acronym> (6.0-testing-20041003) system 
at <ulink url="http://www.linuxfromscratch.org/~randy/gcc341_test.txt"/>. You 
may also want to refer to the information found in the 
<application><acronym>GCC</acronym></application>-Pass 2 section of Chapter 5
in the <acronym>LFS</acronym> book.</para></important>

<note><para>Some of the <application>Java</application> programs installed by 
the <application><acronym>GCC</acronym></application> package conflict (have
the same names) with programs from the <xref linkend="j2sdk"/> package. If 
you're installing the <application>Java</application> language from the 
<application><acronym>GCC</acronym></application> package but you wish to 
use the programs from the <application>JDK</application> as the defaults,
ensure 
<filename class='directory'><replaceable>[JDKpath]</replaceable>/bin</filename> 
is listed before <filename class='directory'>/usr/bin</filename> in your 
<envar>PATH</envar> variable.</para></note>

<screen><userinput><command>patch -Np1 -i ../gcc-&gcc-version;-no_fixincludes-1.patch &amp;&amp;
patch -Np1 -i ../gcc-&gcc-version;-linkonce-1.patch &amp;&amp;
sed -i 's/install_to_$(INSTALL_DEST) //' libiberty/Makefile.in &amp;&amp;
mkdir ../gcc-build &amp;&amp;
cd ../gcc-build &amp;&amp;
../gcc-&gcc-version;/configure --prefix=/usr --libexecdir=/usr/lib \
    --enable-shared --enable-languages=c,c++,objc,f77,ada,java \
    --enable-threads=posix --enable-__cxa_atexit --enable-clocale=gnu &amp;&amp;
make bootstrap &amp;&amp;
make -C gcc gnatlib-shared &amp;&amp;
make -C gcc gnattools &amp;&amp;
make -k check &amp;&amp;
../gcc-3.4.1/contrib/test_summary &amp;&amp;
make install &amp;&amp;
ln -sf ../usr/bin/cpp /lib &amp;&amp;
ln -sf gcc /usr/bin/cc &amp;&amp;
ln -sf g77 /usr/bin/f77 &amp;&amp;
chown -R root:root /usr/lib/gcc/i686-pc-linux-gnu/&gcc-version;/include</command></userinput></screen>

<para>You may remove the <application><acronym>GNAT</acronym></application>
installation and restore your old <envar>PATH</envar>:</para>

<screen><userinput><command>rm -rf /opt/gnat &amp;&amp;
export PATH=$PATH_HOLD</command></userinput></screen>

</sect2>

<sect2>
<title>Command explanations</title>

<para><command>sed -i 's/install_to_$(INSTALL_DEST) //' libiberty/Makefile.in</command>: 
This command suppresses the installation of 
<filename class='libraryfile'>libiberty.a</filename> as the version provided 
by <application>Binutils</application> is used instead.</para>

<para><command>mkdir ../gcc-build; cd ../gcc-build</command>: The 
<application><acronym>GCC</acronym></application> documentation recommends 
building the package in a dedicated build directory.</para>

<para><parameter>--enable-languages=c,c++,objc,f77,ada,java</parameter>: 
This command identifies which languages to build. You may modify this command 
to remove undesired languages.</para>

<para><parameter>--enable-shared --enable-threads=posix
--enable-__cxa_atexit</parameter>: These commands are required to build
the <application>C++</application> libraries to published standards.</para>

<para><parameter>--enable-clocale=gnu</parameter>: This command is a
failsafe for incomplete locale data.</para>

<para><command>make -C gcc gnatlib-shared</command>: This command builds the 
Ada shared and static libraries. Skip this step if you have not enabled 
<application>Ada</application> as one of the languages.</para>

<para><command>make -C gcc gnattools</command>: This command builds the 
Ada development tools and binaries. Skip this step if you have not enabled 
<application>Ada</application> as one of the languages.</para>

<para><command>make -k check</command>: This command runs the test suite 
without stopping should any errors be encountered.</para>

<para><command>../gcc-3.4.1/contrib/test_summary</command>: This command will 
produce a summary of the test suite results. You can append 
<command>| grep -A7 Summ</command> to the command to produce an even more
condensed version of the summary. You may also wish to redirect the output to 
a file for review and comparison later on.</para>

<para><command>ln -sf ../usr/bin/cpp /lib</command>: This command creates a 
link to the C PreProcessor as some packages expect it to be installed in the 
<filename class='directory'>/lib</filename> directory.</para>

<para><command>ln -sf gcc /usr/bin/cc; ln -sf g77 /usr/bin/f77</command>: 
These links are created as some packages refer to the C and Fortran compilers 
using an alternate name.</para> 

<para><command>chown -R root:root /usr/lib/gcc/i686-pc-linux-gnu/&gcc-version;/include</command>: 
If the package is built by a user other than root, the ownership of the 
installed <filename class='directory'>include</filename> directory (and its 
contents) will be incorrect. This command changes the ownership to 
root:root.</para>

</sect2>

<sect2>
<title>Contents</title>

<para>The <application><acronym>GCC</acronym></application> package contains 
<command>addr2name.awk</command>, 
<command>c++</command>, 
<command>cpp</command>, 
<command>g++</command>, 
<command>g77</command>, 
<command>gcc</command>, 
<command>gccbug</command>, 
<command>gcj</command>, 
<command>gcjh</command>, 
<command>gcov</command>, 
<command>gij</command>, 
<command>gnat</command>, 
<command>gnatbind</command>, 
<command>gnatbl</command>, 
<command>gnatchop</command>, 
<command>gnatclean</command>, 
<command>gnatfind</command>, 
<command>gnatkr</command>, 
<command>gnatlink</command>, 
<command>gnatls</command>, 
<command>gnatmake</command>, 
<command>gnatname</command>, 
<command>gnatprep</command>, 
<command>gnatxref</command>, 
<command>grepjar</command>, 
<command>jar</command>, 
<command>jcf-dump</command>, 
<command>jv-convert</command>, 
<command>jv-scan</command>, 
<command>rmic</command>, 
<command>rmiregistry</command> and 
<application><acronym>GCC</acronym></application> libraries.</para>

</sect2>

<sect2><title>Description</title>

<para>The programs and libraries whose descriptions are missing here
have been described in the <acronym>LFS</acronym>
<acronym>GCC</acronym>-&gcc-version; page.</para>

<sect3><title>addr2name.awk</title>
<para><command>addr2name.awk</command> emulates some of the functionality 
of addr2line.</para></sect3>

<sect3><title>g77</title>
<para><command>g77</command> is the <application>Fortran</application> compiler 
invoked by <command>gcc</command>.</para></sect3>

<sect3><title>gcj</title>
<para><command>gcj</command> is an ahead-of-time compiler for the 
<application>Java</application> language.</para></sect3>

<sect3><title>gcjh</title>
<para><command>gcjh</command> generates header files from 
<application>Java</application> class files.</para></sect3>

<sect3><title>gij</title>
<para><command>gij</command> is the <acronym>GNU</acronym> interpreter for 
<application>Java</application> bytecode.</para></sect3>

<sect3><title>gnat</title>
<para><command>gnat</command> is the <application>Ada</application> compiler 
invoked by <command>gcc</command>.</para></sect3>

<sect3><title>gnatbind</title>
<para><command>gnatbind</command> is used to bind compiled 
objects.</para></sect3>

<sect3><title>gnatbl</title>
<para><command>gnatbl</command> is the <application>Ada</application> 
linker.</para></sect3>

<sect3><title>gnatchop</title>
<para><command>gnatchop</command> is useful for renaming files to meet the 
standard <application>Ada</application> default file naming 
conventions.</para></sect3>

<sect3><title>gnatclean</title>
<para><command>gnatclean</command> is used to remove files associated with a 
<application><acronym>GNAT</acronym></application> project.</para></sect3>

<sect3><title>gnatfind</title>
<para><command>gnatfind</command> is the 
<application><acronym>GNAT</acronym></application> definition/use 
finder.</para></sect3>

<sect3><title>gnatkr</title>
<para><command>gnatkr</command> is used to determine the crunched name for a
given file, when crunched to a specified maximum length.</para></sect3>

<sect3><title>gnatlink</title>
<para><command>gnatlink</command> is used to link programs and build an
executable file.</para></sect3>

<sect3><title>gnatls</title>
<para><command>gnatls</command> is the compiled unit browser.</para></sect3>

<sect3><title>gnatmake</title>
<para><command>gnatmake</command> is an automatic make facility.</para></sect3>

<sect3><title>gnatname</title>
<para><command>gnatname</command> will list the files associated with a 
<application><acronym>GNAT</acronym></application> project.</para></sect3>

<sect3><title>gnatmem</title>
<para><command>gnatmem</command> is the 
<application><acronym>GNAT</acronym></application> utility that monitors 
dynamic allocation and deallocation activity in a program.</para></sect3>

<sect3><title>gnatprep</title>
<para><command>gnatprep</command> is the
<application><acronym>GNAT</acronym></application> external 
preprocessor.</para></sect3>

<sect3><title>gnatxref</title>
<para><command>gnatxref</command> is the 
<application><acronym>GNAT</acronym></application> 
cross-referencer.</para></sect3>

<sect3><title>grepjar</title>
<para><command>grepjar</command> searches <filename>jar</filename> files for a 
pattern.</para></sect3>

<sect3><title>jar</title>
<para><command>jar</command> is an archive tool for 
<application>Java</application> archives.</para></sect3>

<sect3><title>jcf-dump</title>
<para><command>jcf-dump</command> prints information about 
<application>Java</application> class files.</para></sect3>

<sect3><title>jv-convert</title>
<para><command>jv-convert</command> converts files from one encoding to 
another.</para></sect3>

<sect3><title>jv-scan</title>
<para><command>jv-scan</command> prints information about 
<application>Java</application> source files.</para></sect3>

<sect3><title>rmic</title>
<para><command>rmic</command> generates stubs for Remote Method 
Invocation.</para></sect3>

<sect3><title>rmiregistry</title>
<para><command>rmiregistry</command> starts a remote object registry on the 
current host.</para></sect3>

</sect2>

</sect1>