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git-svn-id: http://svn.linuxfromscratch.org/LFS/trunk/BOOK@2700 4aa44e1e-78dd-0310-a6d2-fbcd4c07a689
55 lines
2.4 KiB
XML
55 lines
2.4 KiB
XML
<sect1 id="ch05-locking-glibc">
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<title>"Locking in" Glibc</title>
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<?dbhtml filename="lockingglibc.html" dir="chapter05"?>
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<para>Now that the temporary C libraries have been installed, we want all
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the tools compiled in the rest of this chapter to be linked against these
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libraries. To accomplish this, we need to adjust the linker's scripts and the
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compiler's specs file.</para>
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<para>First install the adjusted linker scripts by running the following from
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within the <filename class="directory">binutils-build</filename>
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directory:</para>
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<para><screen><userinput>make -C ld install-data-local</userinput></screen></para>
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<para>These scripts were adjusted a little while back, at the end of the first
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pass of Binutils, and contain no mention of <filename>/lib</filename>,
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<filename>/usr/lib</filename> or <filename>/usr/local/lib</filename>.
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From this point onwards everything will link <emphasis>only</emphasis>
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against the libraries in <filename>/stage1/lib</filename>.</para>
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<para>You can now remove Binutils' build and source directories.</para>
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<para>The other thing to do is to amend our GCC specs file so that it points
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to the new dynamic linker. A simple sed will accomplish this:</para>
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<para><screen><userinput>SPECFILE=/stage1/lib/gcc-lib/*/*/specs
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sed -e 's@/lib/ld.so.1@/stage1/lib/ld.so.1@g' \
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-e 's@/lib/ld-linux.so.2@/stage1/lib/ld-linux.so.2@g' \
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$SPECFILE > tempspecfile
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mv tempspecfile $SPECFILE
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unset SPECFILE</userinput></screen></para>
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<para>We recommend that you cut-and-paste the above rather than try and type
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it all in. Or you can edit the specs file by hand if you want to: just replace
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"/lib/ld-linux.so.2" with "/stage1/lib/ld-linux.so.2".</para>
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<para>Also, because we allowed GCC's "Fixincludes" script to modify our host's
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header files (and this was necessary because of improper use of the __thread
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keyword in some older software), we want to get rid of those modified header
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files, and replace them with pristine ones.</para>
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<para><screen><userinput>GCCDIR=/stage1/lib/gcc-lib/*/*
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rm -rf $GCCDIR/include/*
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cp $GCCDIR/install-tools/include/* $GCCDIR/include
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cp $GCCDIR/install-tools/gsyslimits.h \
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$GCCDIR/include/syslimits.h
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unset GCCDIR</userinput></screen></para>
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<para>This completes the installation of the self-contained toolchain, which
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can now be used to build the rest of the temporary tools.</para>
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</sect1>
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