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- <sect2>
- <title>Command explanations</title>
- <para><userinput>patch -Np1 -i ../gcc-&gcc-version;.patch:</userinput>
- This new patch deals with incorrect handling of weak symbols, the
- over-optimization of calls to those weak symbols, an atexit issue and
- the __dso_handle symbol required for atexit's proper function.</para>
- <para><userinput>--enable-languages=c,c++:</userinput> This only builds the C
- and C++ compilers and not the other available compilers as they are, on
- the average, not often used. If those other compilers are needed,
- the --enable-languages parameter can be omitted.</para>
- <para><userinput>--enable-threads:</userinput> C++ exception handling for
- multithreaded code will not work if gcc is compiled without
- --enable-threads.</para>
- <para><userinput>ln -s ../usr/bin/cpp:</userinput> This
- creates the $LFS/lib/cpp symlink. Some packages explicitly try to find
- cpp in /lib.</para>
- <para><userinput>ln -s ../bin/cpp:</userinput> This
- creates the $LFS/usr/lib/cpp symlink as there are packages that expect
- cpp to be in /usr/lib.</para>
- </sect2>
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