5.8. GCC-4.1.1 - Cross Compiler Final

The following patch fixes the searching of multilib dirs for specs file. The patch standardizes the gcc drivers path iteration functions, ensuring multilib directories are searched in the correct order. This fixes various issues, most noticably with libtool on multilib systems:

patch -Np1 -i ../gcc-4.1.1-PR20425-1.patch

Make a couple of essential adjustments to the specs file to ensure GCC uses our build environment:

patch -Np1 -i ../gcc-4.1.1-specs-1.patch

To make sure that a couple of tools use the proper syntax, apply the following patch:

patch -Np1 -i ../gcc-4.1.1-posix-1.patch

The following patch ensures that gcc does not search the /usr directory for libgcc_s.so when cross-compiling:

patch -Np1 -i ../gcc-4.1.1-cross_search_paths-1.patch

Change the StartFile Spec to point to the correct library location:

echo "
#undef STARTFILE_PREFIX_SPEC
#define STARTFILE_PREFIX_SPEC \"/tools/lib/\"" >> gcc/config/rs6000/linux.h

Now alter gcc's c preprocessor's default include search path to use /tools only:

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

The GCC documentation recommends building GCC outside of the source directory in a dedicated build directory:

mkdir -v ../gcc-build
cd ../gcc-build

Prepare GCC for compilation:

../gcc-4.1.1/configure --prefix=/cross-tools \
    --target=${CLFS_TARGET} --host=${CLFS_HOST} --disable-multilib \
    --with-local-prefix=/tools --disable-nls --enable-shared \
    --enable-languages=c,c++ --enable-__cxa_atexit \
    --enable-c99 --enable-long-long --enable-threads=posix

Continue with compiling the package:

make AS_FOR_TARGET="${CLFS_TARGET}-as" \
    LD_FOR_TARGET="${CLFS_TARGET}-ld"

Install the package:

make install