This package is known to behave badly when you have changed its default optimization flags (including the -march and -mcpu options). GCC is best left alone. Therefore, if you have defined any environment variables that override default optimizations, such as CFLAGS and CXXFLAGS, we recommend unsetting or modifying them when building binutils. You have been warned. Install GCC by running the following commands. These commands will build the C and C++ compiler. Other compilers are available within the gcc package. If you want to build all the other available compilers too, leave out the --enable-languages=c,c++ option in the configure command. See the GCC documentation for more details on which additional compilers are available. Note: the build of other compilers is not tested by the people who actively work on LFS. mkdir ../gcc-build && cd ../gcc-build && ../gcc-&gcc-version;/configure --prefix=/usr --enable-shared \     --enable-languages=c,c++ --enable-threads=posix \     --with-slibdir=/lib && make bootstrap && make install && ln -sf ../usr/bin/cpp /lib && ln -sf ../bin/cpp /usr/lib && ln -sf gcc /usr/bin/cc