Difference between revisions of "Cross Compiling"

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** export GCC_TARGET=i386
 
** export GCC_TARGET=i386
 
** export DEB_CROSS_INDEPENDENT=yes
 
** export DEB_CROSS_INDEPENDENT=yes
 +
** export WITHOUT_LANG=java,fortran,pascal,obj,obj-c++,ada,treelang
 
** debian/rules control
 
** debian/rules control
 
** dpkg-buildpackage -b -rfakeroot
 
** dpkg-buildpackage -b -rfakeroot

Revision as of 15:11, 13 July 2007

Instructions for compiling an i386 multlib toolchain:

  • Install apt-cross, dpkg-cross, autoconf, automake, gawk, flex, bison, debhelper, devscript, cdbs, fakeroot
  • Download i386 binary packages of linux-kernel-headers, libc6, libc6-dev, libc6-amd64, libc6-dev-amd64
  • Run 'dpkg-cross -a i386 -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=i486-linux-gnu fakeroot debian/rules binary-cross
  • Install resulting cross binutils
  • cd gcc-4.1 and run:
    • export GCC_TARGET=i386
    • export DEB_CROSS_INDEPENDENT=yes
    • export WITHOUT_LANG=java,fortran,pascal,obj,obj-c++,ada,treelang
    • debian/rules control
    • dpkg-buildpackage -b -rfakeroot
    • 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. The problem is that .changes files don't get generated. dpkg-genchanges might be able to help here.

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