Cross Compiling

Instructions for compiling a toolchain:

• ARCH = architecture (arm, i386, etc...)

• Install apt-cross, dpkg-cross, autoconf, automake, gawk, flex, bison, debhelper, devscripts, cdbs, fakeroot
• Download $ARCH binary packages of linux-kernel-headers, libc6, libc6-dev
• Run 'dpkg-cross -a $ARCH -b package' for each of the above packages
• Install the resulting cross packages that were created by dpkg-cross above
• 'apt-get source' binutils and gcc-4.1
• cd binutils and run:
  • TARGET=$ARCH-linux-gnu fakeroot debian/rules binary-cross
• Install resulting cross binutils
• cd gcc-4.1 and run:
  • export GCC_TARGET=$ARCH
  • export DEB_CROSS_INDEPENDENT=yes
  • export WITHOUT_LANG=java,fortran,pascal,obj,obj-c++,ada,treelang
  • export DEB_CROSS_NO_BIARCH=yes
  • debian/rules control
  • dpkg-buildpackage -b -rfakeroot
  • On the alpha, gcc will fail to build do to a small error:
    • src/libmudflap/mf-runtime.c:172: the type on __mf_lc_mask needs to be set to __mf_uintptr_t
    • dpkg-buildpackage -b -rfakeroot -nc
• Install resulting cross gcc-4.1

It's generally useful to upload these built packages to the CSC debian repository. To do this you need to scp the .deb's over to natural-flavours and run 'rrr includedeb etch deb-files...'.

If you need i386 binary libraries, you can run 'apt-cross -a i386 -i package'.

sun4u

• DEB_TARGET_GNU_TYPE=sparc-sun-solaris2.8
• DEB_TARGET_ALIAS=sparc-sun-solaris2.8
• DEB_TARGET_ARCH=sparc-sun-solaris2.8