NAME

       cross-gcc-gensource - generates sources to build a Debian cross toolchain

SYNOPSIS

        [TARGET_LIST=<arches to target>] [HOST_LIST=<build arches>] [SUFFIX=.1] cross-gcc-gensource <gcc-version>

        example:
        /tmp$ TARGET_LIST="armel armhf" HOST_LIST="amd64" cross-gcc-gensource 5

        .... lots of verbose output ....

        /tmp$ cd cross-gcc-packages-amd64/cross-gcc-5-armel

        /tmp/cross-gcc-packages-amd64/cross-gcc-5-armel$ ls

        debian

        /tmp/cross-gcc-packages-amd64/cross-gcc-5-armel$ dpkg-buildpackage

        .... building cross-toolchain ....

DESCRIPTION

       This is a utility that prepares a directory with debianized sources which build cross
       toolchain packages. The sources produced by this tool are very small; the code itself
       comes from the "gcc-version-source" package and the necessary patches and extra build
       stuff comes from the "cross-gcc-dev" package.

ARGUMENTS

       Normal usage is

        cross-gcc-gensource gcc_version

       Where "gcc_version" is the base version of the toolchain we're building. At the time of
       this writing we know about versions 4.9, 5 and 6. This commandline argument is required.

   Specifying the target architectures
       This tool generates a separate source package for each target architecture (the
       architecture targetted by the cross-compiler being built). By default these architectures
       are targetted:

       arm64
       armel
       armhf
       mips
       mipsel
       powerpc
       ppc64el

       If a different set of target architectures is required, set the "TARGET_LIST" environment
       variable. For instance, to build for "armel" and "armhf":

        TARGET_LIST="armel armhf" cross-gcc-gensource 5

   Specifying the host architectures
       Similarly, this tool generates a separate source tree for each host architecture (the
       architecture the cross-compiler being built runs on). By default these architectures are
       targetted:

       amd64
       i386

       If a different set of host architectures is required, set the "HOST_LIST" environment
       variable. For instance, to build just for "amd64":

        HOST_LIST="amd64" cross-gcc-gensource 5

   Specifying a verison suffix
       If you need to upload a new source package when the version of gcc-source built-against
       hasn't changed, then you need to add a version suffix to avoid binary-version clashes. An
       optional SUFFIX env var allows this.

        TARGET_LIST="armel armhf" SUFFIX=.1 cross-gcc-gensource 5