Dependencies

For the most part the codebase is self-contained (e.g. all dependencies are vendored), but assembly of the stage1 requires some other tools to be installed on the system.

Build-time dependencies

Basic

• GNU Make
• Go 1.5.3 or later
• autoconf
• aclocal (usually a part of automake)
• bash
• git
• glibc
  • development headers
  • the rkt binary links against the library
• gofmt (usually distributed with Go)
• govet (usually distributed with Go)
• TrouSerS (only when TPM is enabled, see build configuration for details)
  • development headers
  • the rkt binary links against the library
• libsystemd-journal
  • development headers
• gpg (when running functional tests)

Additional dependencies when building any stage1 image

• glibc
  • development headers
  • the stage1 binaries link against the static library
• libdl
  • development headers
  • the stage1 binaries link against the library
• libacl
  • development headers
• C compiler

Specific dependencies for the coreos/kvm flavor

• cat
• comm
• cpio
• gzip
• md5sum
• mktemp
• sort
• unsquashfs
• wget
• gpg (optional, required when downloading the CoreOS Container Linux PXE image during the build)

Specific dependencies for the kvm flavor

• patch
• tar
• xz
• build dependencies for kernel
  • bc
  • binutils
  • openssl
• build dependencies for lkvm and/or qemu

Specific dependencies for the src flavor

• build dependencies for systemd

Run-time dependencies

• Linux 3.18+ (ideally 4.9+ to avoid the issues listed in the troubleshooting document), with the following options configured:
  • CONFIG_CGROUPS
  • CONFIG_NAMESPACES
  • CONFIG_UTS_NS
  • CONFIG_IPC_NS
  • CONFIG_PID_NS
  • CONFIG_NET_NS
  • CONFIG_OVERLAY_FS (nice to have)

Additional run-time dependencies for all stage1 image flavors

• libacl
  • the library is optional (it is dlopened inside the stage1)

Specific dependencies for the host flavor

• bash
• systemd >= v222
  • systemctl
  • systemd-shutdown
  • systemd
  • systemd-journald