source: chapter05/gcc-inst.xml@ 766fc82

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Last change on this file since 766fc82 was fd132b0, checked in by Gerard Beekmans <gerard@…>, 22 years ago

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git-svn-id: http://svn.linuxfromscratch.org/LFS/trunk/BOOK@1871 4aa44e1e-78dd-0310-a6d2-fbcd4c07a689

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[6370fa6]1<sect2>
[a36091d]2<title>Installation of GCC</title>
[6370fa6]3
[689a79b]4<para>This package requires its patch to be applied before you can
5install it. Make sure it's unpacked before running the installation
6commands.</para>
7
[e69a59f]8<para>This package is known to behave badly when you have changed its
9default optimization flags (including the -march and -mcpu options). GCC is
10best left alone. Therefore, if you have defined any environment variables
11that override default optimizations, such as CFLAGS and CXXFLAGS, we
[fd132b0]12recommend unsetting or modifying them when building GCC. You have
[e69a59f]13been warned.</para>
[b43aab1]14
[b822811]15<para>Install GCC by running the following commands:</para>
[6370fa6]16
[4d6fc2da]17<para><screen><userinput>patch -Np1 -i ../gcc-&gcc-patch-version;.patch &amp;&amp;
18mkdir ../gcc-build &amp;&amp;
19cd ../gcc-build &amp;&amp;
20../gcc-&gcc-version;/configure --prefix=/usr --enable-languages=c,c++ \
21&nbsp;&nbsp;&nbsp;--disable-nls --disable-shared --enable-threads=posix &amp;&amp;
22make BOOT_LDFLAGS=-static bootstrap &amp;&amp;
23make prefix=$LFS/usr install &amp;&amp;
[3f12743]24ln -sf ../usr/bin/cpp $LFS/lib &amp;&amp;
25ln -sf ../bin/cpp $LFS/usr/lib &amp;&amp;
26ln -sf gcc $LFS/usr/bin/cc &amp;&amp;
[5fb9eb8]27rmdir $LFS/usr/*-gnu/include &amp;&amp;
28rmdir $LFS/usr/*-gnu</userinput></screen></para>
[6370fa6]29
30</sect2>
31
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