name: build-essential
description: Toolchain stratum
kind: stratum

chunks:
    # Stage 1: build a minimal cross compiler with the host's tools.
    #
    # Starting with a cross compiler ensures that (a) nothing from the host
    # can leak into the build-essential artifacts, and (b) cross-compiling
    # build-essential is fully tested and supported, since we always use the
    # cross code paths.

    - name: stage1-binutils
      repo: upstream:binutils-redhat
      ref: baserock/build-essential
      build-mode: bootstrap
      prefix: /tools
      build-depends: []

    - name: stage1-gcc
      repo: upstream:gcc-tarball
      ref: baserock/build-essential
      build-mode: bootstrap
      prefix: /tools
      build-depends:
          - stage1-binutils

    # Stage 2: cross-build the whole of build-essential, using the host's tools
    # but the cross-compiler toolchain.
    #
    # Stage 2 GCC outputs code for the same 'bootstrap' machine as stage 1 GCC,
    # but because stage 2 GCC is also built to *run* on the bootstrap machine
    # it can only execute inside the stage 3 chroot (due to being built against
    # a libc with a non-standard prefix).

    - name: stage2-linux-api-headers
      repo: upstream:linux
      ref: baserock/build-essential
      build-mode: bootstrap
      prefix: /tools
      build-depends:
          - stage1-binutils
          - stage1-gcc

    - name: stage2-eglibc
      repo: upstream:eglibc2
      ref: baserock/2.15-build-essential
      build-mode: bootstrap
      prefix: /tools
      build-depends:
          - stage1-binutils
          - stage1-gcc
          - stage2-linux-api-headers

    - name: stage2-zlib
      repo: upstream:zlib
      ref: baserock/build-essential
      build-mode: bootstrap
      prefix: /tools
      build-depends:
          - stage1-binutils
          - stage1-gcc
          - stage2-eglibc

    - name: stage2-binutils
      repo: upstream:binutils-redhat
      ref: baserock/build-essential
      build-mode: bootstrap
      prefix: /tools
      build-depends:
          - stage1-binutils
          - stage1-gcc
          - stage2-eglibc
          - stage2-zlib

    - name: stage2-gcc
      repo: upstream:gcc-tarball
      ref: baserock/build-essential
      build-mode: bootstrap
      prefix: /tools
      build-depends:
          - stage1-binutils
          - stage1-gcc
          - stage2-eglibc
          - stage2-zlib

    - name: stage2-busybox
      repo: upstream:busybox
      ref: baserock/build-essential
      build-mode: bootstrap
      prefix: /tools
      build-depends:
          - stage1-binutils
          - stage1-gcc
          - stage2-eglibc

    - name: stage2-fhs-dirs
      repo: baserock:baserock/fhs-dirs
      ref: master
      build-mode: bootstrap
      prefix: /tools
      build-depends: []

    - name: stage2-gawk
      repo: upstream:gawk
      ref: baserock/build-essential
      build-mode: bootstrap
      prefix: /tools
      build-depends:
          - stage1-binutils
          - stage1-gcc
          - stage2-eglibc

    - name: stage2-make
      repo: upstream:make
      ref: baserock/build-essential
      build-mode: bootstrap
      prefix: /tools
      build-depends:
          - stage1-binutils
          - stage1-gcc
          - stage2-eglibc

    # Stage 3: build the whole of build-essential again, this time using a
    # staging area containing only the output of stage 2. The result of this
    # build is fully reproducible.
    #
    # We do a switch-a-roo between stage 2 and 3: stages 2 chunks are all built
    # to run on a host *-bootstrap-* while stage 3 chunks are built are native
    # built for a *-baserock-* machine. This works, because the cross build was
    # all for show (and cleanliness) and the binaries actually still run on the
    # the host.
    #
    # After build-essential is built we do another trick: stage2-fhs-dirs
    # symlinks /bin to /tools/bin and /lib to /tools/lib, while the stage 3
    # chunks actually install things to those directories. FIXME: which breaks
    # everything!!! This will have to change.
    #

    - name: fhs-dirs
      repo: baserock:baserock/fhs-dirs
      ref: master
      build-mode: staging
      prefix: /usr
      build-depends:
          - stage2-binutils
          - stage2-busybox
          - stage2-eglibc
          - stage2-fhs-dirs
          - stage2-gawk
          - stage2-gcc
          - stage2-linux-api-headers
          - stage2-make
          - stage2-zlib

    - name: linux-api-headers
      repo: upstream:linux
      ref: baserock/build-essential
      build-mode: staging
      prefix: /usr
      build-depends:
          - stage2-binutils
          - stage2-busybox
          - stage2-eglibc
          - stage2-fhs-dirs
          - stage2-gawk
          - stage2-gcc
          - stage2-linux-api-headers
          - stage2-make
          - stage2-zlib

    - name: eglibc
      repo: upstream:eglibc2
      ref: baserock/2.15-build-essential
      build-mode: staging
      prefix: /usr
      build-depends:
          - stage2-binutils
          - stage2-busybox
          - stage2-eglibc
          - stage2-fhs-dirs
          - stage2-gawk
          - stage2-gcc
          - stage2-linux-api-headers
          - stage2-make
          - stage2-zlib
          - linux-api-headers

    - name: zlib
      repo: upstream:zlib
      ref: baserock/build-essential
      build-mode: staging
      prefix: /usr
      build-depends:
          - stage2-binutils
          - stage2-busybox
          - stage2-eglibc
          - stage2-fhs-dirs
          - stage2-gawk
          - stage2-gcc
          - stage2-linux-api-headers
          - stage2-make
          - stage2-zlib
          - eglibc

    - name: binutils
      repo: upstream:binutils-redhat
      ref: baserock/build-essential
      build-mode: staging
      prefix: /usr
      build-depends:
          - stage2-binutils
          - stage2-busybox
          - stage2-eglibc
          - stage2-fhs-dirs
          - stage2-gawk
          - stage2-gcc
          - stage2-linux-api-headers
          - stage2-make
          - stage2-zlib
          - eglibc
          - zlib

    - name: busybox
      repo: upstream:busybox
      ref: baserock/build-essential
      build-mode: staging
      prefix: /usr
      build-depends:
          - stage2-binutils
          - stage2-busybox
          - stage2-eglibc
          - stage2-fhs-dirs
          - stage2-gawk
          - stage2-gcc
          - stage2-linux-api-headers
          - stage2-make
          - stage2-zlib
          - eglibc

    - name: gawk
      repo: upstream:gawk
      ref: baserock/build-essential
      build-mode: staging
      prefix: /usr
      build-depends:
          - stage2-binutils
          - stage2-busybox
          - stage2-eglibc
          - stage2-fhs-dirs
          - stage2-gawk
          - stage2-gcc
          - stage2-linux-api-headers
          - stage2-make
          - stage2-zlib
          - eglibc

    - name: gcc
      repo: upstream:gcc-tarball
      ref: baserock/build-essential
      build-mode: staging
      prefix: /usr
      build-depends:
          - stage2-binutils
          - stage2-busybox
          - stage2-eglibc
          - stage2-fhs-dirs
          - stage2-gawk
          - stage2-gcc
          - stage2-linux-api-headers
          - stage2-make
          - stage2-zlib
          - eglibc
          - zlib

    - name: make
      repo: upstream:make
      ref: baserock/build-essential
      build-mode: staging
      prefix: /usr
      build-depends:
          - stage2-binutils
          - stage2-busybox
          - stage2-eglibc
          - stage2-fhs-dirs
          - stage2-gawk
          - stage2-gcc
          - stage2-linux-api-headers
          - stage2-make
          - stage2-zlib
          - eglibc

    # Extras that need to be in build-essential but don't need bootstrapping.

    - name: ccache
      repo: upstream:ccache
      ref: baserock/build-essential
      build-mode: staging
      prefix: /usr
      build-depends:
          - stage2-binutils
          - stage2-busybox
          - stage2-eglibc
          - stage2-fhs-dirs
          - stage2-gawk
          - stage2-gcc
          - stage2-linux-api-headers
          - stage2-make
          - stage2-zlib
          - eglibc
          - zlib