View source for How to build GNU cross-compilers

=== Toolchain preparation and kernel build information ===
by Pavel Píša

Debian PowerPC GCC build log

[http://buildd.debian.org/build.php?arch=&pkg=gcc-4.3 Debian GCC-4.3 build logs]

==== Kernel headers install ====

[http://xilinx.wikidot.com/u-boot http://xilinx.wikidot.com/u-boot]

 mkdir src
 cd src
 git clone  git://git.xilinx.com/u-boot-xlnx.git
 git clone  git://git.xilinx.com/gen-mhs-devtree.git
 git clone --reference /usr/src/linux-devel git://git.xilinx.com/linux-2.6-xlnx.git

 mkdir -p build/ml403/linux
 cd build/ml403/linux

Copy and adapt GNUmakefile to override ARCH and select kernel source directory

Run

 make headers_install

The header-files for building GCC nd GLIB are prepared in usr/include directory.
Copy files found there to the directory /usr/powerpc-linux-gnu/sys-include

==== Glibc ====

The required files are glibc-2.7ds1.tar.bz2 glibc-linuxthreads-20071023.tar.bz2 glibc-libidn-2.7.tar.bz2 glibc-ports-2.7.tar.bz2

 mkdir -p src
 cd src
 tar -xjf ../glibc-2.7ds1.tar.bz2
 tar -xjf ../glibc-linuxthreads-20071023.tar.bz2
 tar -xjf ../glibc-libidn-2.7.tar.bz2
 ( cd glibc-2.7 ; mv glibc-libidn-2.7 libidn )
 tar -xjf ../glibc-ports-2.7.tar.bz2
 ( cd glibc-2.7 ; mv glibc-ports-2.7 ports )
 ln -s glibc-2.7 glibc

Prepare directory to build PowerPC version of GLIBC

 mkdir -p build/powerpc-linux/glibc

If there is no previous install of GLIBC, use next dummy build to install headers.
They are required to build GCC later

 libc_cv_ppc_machine=yes \
 libc_cv_mabi_ibmlongdouble=yes \
 libc_cv_mlong_double_128=yes \
 libc_cv_forced_unwind=yes \
 libc_cv_c_cleanup=yes \
 CC=gcc \
 ../../../src/glibc/configure --prefix=/usr \
        --build=x86_64-linux-gnu \
        --host=powerpc-linux-gnu \
        --prefix=/usr \
        --without-cvs \
        --enable-add-ons=libidn,nptl \
        --enable-profile \
        --without-selinux \
        --with-headers=/usr/powerpc-linux-gnu/sys-include \
        --enable-kernel=2.6.26 \
        --enable-hacker-mode \
        --without-cvs --disable-sanity-checks

 make DESTDIR=/usr-pkg/glibc-linux-powerpc-2.7-1 \
       inst_includedir=/usr-pkg/glibc-linux-powerpc-2.7-1/include \
       install-headers

==== Build binutils ====

 ../../../binutils/configure \
        --prefix=/usr \
        --disable-nls \
        --build=x86_64-linux-gnu \
        --host=x86_64-linux-gnu \
        --target=powerpc-linux-gnu \
        --enable-targets=powerpc64-linux-gnu

 make && make DESTDIR=/usr-pkg/binutils-powerpc-linux-gnu_2.18-2_amd64 install

==== Build GCC ====

 ../../../gcc-4.3/configure -v \
         --enable-languages=c,c++ \
         --prefix=/usr \
         --enable-shared \
         --with-system-zlib \
         --without-included-gettext \
         --enable-threads=posix \
         --disable-nls \
         --enable-clocale=gnu \
         --enable-libstdcxx-debug \
         --enable-objc-gc \
         --enable-mpfr \
         --enable-softfloat \
         --enable-tls \
         --enable-secureplt \
         --enable-targets=powerpc-linux,powerpc64-linux \
         --with-cpu=default32 \
         --with-long-double-128 \
         --enable-checking=release \
         --build=x86_64-linux-gnu \
         --host=x86_64-linux-gnu \
         --target=powerpc-linux-gnu \
         --enable-version-specific-runtime-libs \
         --disable-libgomp \
         --disable-libmudflap

==== Finally build GLIBC ====

 ../../../src/glibc/configure \
        --build=x86_64-linux-gnu \
        --host=powerpc-linux-gnu \
        --prefix=/usr \
        --without-cvs \
        --enable-add-ons=libidn,nptl \
        --enable-profile \
        --without-selinux \
        --with-headers=/usr/powerpc-linux-gnu/sys-include \
        --enable-kernel=2.6.20

 make

 make install_root=/usr-pkg/glibc-2.7-powerpc install