| 1 | <sect2>
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| 2 | <title>Command explanations</title>
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| 3 |
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| 4 | <para><userinput>patch -Np1 -i ../gcc-&gcc-patch-version;.patch:</userinput>
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| 5 | This patch fixes a few bugs. In particular it contains the "copy fix" and
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| 6 | "var fix" documented at
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| 7 | <ulink url="http://www.zipworld.com.au/~gschafer/lfs-tweaks.html"/>.</para>
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| 8 |
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| 9 | <para><userinput>patch -Np1 -i ../gcc-3.2-nofixincludes-2.patch:</userinput>
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| 10 | This prevents the fixincludes script from running. This is needed because
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| 11 | under normal circumstances the GCC installation will run the fixincludes
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| 12 | scripts which scans your system for header files that need to be fixed. Say
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| 13 | it finds Glibc header files. It will fix them and will end up in
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| 14 | $LFS/static/lib/gcc-lib/i686-pc-linux-gnu/3.2. Later on in chapter 6 you
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| 15 | will install Glibc which will install header files in /usr/include. Next
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| 16 | you will install other programs which will use Glibc headers. GCC will look
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| 17 | in /static/lib/gcc-lib before looking in /usr/include, whichhas the result
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| 18 | of Glibc header files from your host distribution being found and used which
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| 19 | are probably incompatible with the Glibc version actually in use on the LFS
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| 20 | system.</para>
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| 21 |
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| 22 | <para><userinput>--prefix=/static:</userinput> This is NOT a typo. GCC hard
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| 23 | codes some paths while compiling and so we need to pass /static as the
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| 24 | prefix during ./configure. We pass the real install prefix during the
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| 25 | make install command later.</para>
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| 26 |
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| 27 | <para><userinput>echo "#define HAVE_GAS_HIDDEN 1":</userinput>
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| 28 | This defines the .hidden assembler directive so that we don't build
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| 29 | a faulty Glibc later on.</para>
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| 30 |
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| 31 | <para><userinput>make BOOT_LDFLAGS=-static:</userinput>
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| 32 | This is the equivalent to make LDFLAGS=-static as we use with other
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| 33 | packages to compile them statically.</para>
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| 34 |
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| 35 | <para><userinput>ln -s gcc $LFS/static/bin/cc:</userinput> This
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| 36 | creates the $LFS/static/bin/gcc symlink, which some packages need.</para>
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| 37 |
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| 38 | </sect2>
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