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git-svn-id: http://svn.linuxfromscratch.org/LFS/trunk/BOOK@1871 4aa44e1e-78dd-0310-a6d2-fbcd4c07a689
32 lines
1.2 KiB
XML
32 lines
1.2 KiB
XML
<sect2>
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<title>Installation of GCC</title>
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<para>This package requires its patch to be applied before you can
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install it. Make sure it's unpacked before running the installation
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commands.</para>
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<para>This package is known to behave badly when you have changed its
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default optimization flags (including the -march and -mcpu options). GCC is
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best left alone. Therefore, if you have defined any environment variables
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that override default optimizations, such as CFLAGS and CXXFLAGS, we
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recommend unsetting or modifying them when building GCC. You have
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been warned.</para>
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<para>Install GCC by running the following commands:</para>
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<para><screen><userinput>patch -Np1 -i ../gcc-&gcc-patch-version;.patch &&
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mkdir ../gcc-build &&
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cd ../gcc-build &&
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../gcc-&gcc-version;/configure --prefix=/usr --enable-languages=c,c++ \
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--disable-nls --disable-shared --enable-threads=posix &&
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make BOOT_LDFLAGS=-static bootstrap &&
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make prefix=$LFS/usr install &&
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ln -sf ../usr/bin/cpp $LFS/lib &&
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ln -sf ../bin/cpp $LFS/usr/lib &&
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ln -sf gcc $LFS/usr/bin/cc &&
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rmdir $LFS/usr/*-gnu/include &&
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rmdir $LFS/usr/*-gnu</userinput></screen></para>
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</sect2>
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