# GCC-&gcc-version;

## Installation of GCC

Also, we need to set the directory searched by the fixincludes process for system headers, so it won't look at the host's headers:

    cp -v gcc/Makefile.in{,.orig}
    sed -e 's@\(^NATIVE_SYSTEM_HEADER_DIR =\).*@\1 /tools/include@g' \
        gcc/Makefile.in.orig > gcc/Makefile.in

Before starting to build GCC, remember to unset any environment variables that override the default optimization flags.

    ../gcc-&gcc-version;/configure --prefix=/tools \
      --build=${CLFS_HOST} --host=${CLFS_TARGET} --target=${CLFS_TARGET} \
      --with-local-prefix=/tools --enable-long-long --enable-c99 \
      --enable-shared --enable-threads=posix --enable-__cxa_atexit \
      --disable-nls --enable-languages=c,c++ --disable-libstdcxx-pch \
      --disable-multilib

## The meaning of the new configure options:

`--disable-libstdcxx-pch`

- Do not build the pre-compiled header (PCH) for `libstdc++`. It takes up a lot of space, and we have no use for it.

The following will prevent GCC from looking in the wrong directories for headers and libraries:

    cp -v Makefile{,.orig}
    sed "/^HOST_\(GMP\|PPL\|CLOOG\)\(LIBS\|INC\)/s:-[IL]/\(lib\|include\)::" \
        Makefile.orig > Makefile

Compile the package:

    make AS_FOR_TARGET="${AS}" \
        LD_FOR_TARGET="${LD}"

Install the package:

    make install

Details on this package are located in contents-gcc