- Build docker on PPC and S390x using gcc-go provided by gcc5

* added sysconfig.docker.ppc64le: make docker daemon start on ppc64le
    despite some iptables issues. To be removed soon
  * ignore-dockerinit-checksum.patch: applied only when building with
    gcc-go. Required to workaround a limitation of gcc-go
  * gcc-go-build-static-libgo.patch: used only when building with gcc-go,
    link libgo statically into docker itself.

OBS-URL: https://build.opensuse.org/package/show/Virtualization:containers/docker?expand=0&rev=9

docker.changes

@@ -1,3 +1,14 @@
+-------------------------------------------------------------------
+Fri Jun  5 15:23:47 UTC 2015 - fcastelli@suse.com
+
+- Build docker on PPC and S390x using gcc-go provided by gcc5
+  * added sysconfig.docker.ppc64le: make docker daemon start on ppc64le
+    despite some iptables issues. To be removed soon
+  * ignore-dockerinit-checksum.patch: applied only when building with
+    gcc-go. Required to workaround a limitation of gcc-go
+  * gcc-go-build-static-libgo.patch: used only when building with gcc-go,
+    link libgo statically into docker itself.
+
 -------------------------------------------------------------------
 Wed May 27 10:02:51 UTC 2015 - dmacvicar@suse.de
 

docker.spec

@@ -37,13 +37,25 @@ Source5:        docker_systemd_lt_214.socket
 
 Source6:        docker-rpmlintrc
 Source7:        README_SUSE.md
+# TODO: remove once we figure out what is wrong with iptables on ppc64le
+Source100:      sysconfig.docker.ppc64le
 Patch0:         0002-Stripped-dockerinit-binary.patch
 # PATCH-FIX-OPENSUSE libcontainer-apparmor-fixes.patch -- mount rules aren't supported in our apparmor
 Patch1:         libcontainer-apparmor-fixes.patch
+# Required to overcome some limitations of gcc-go: https://groups.google.com/forum/#!msg/golang-nuts/SlGCPYkjxo4/4DjcjXRCqAkJ
+# Right now docker passes the sha1sum of the dockerinit binary to the docker binary at build time
+# We cannot do that, right now a quick and really dirty way to get it running is
+# to simply disable this check
+Patch100:       ignore-dockerinit-checksum.patch
+Patch101:       gcc-go-build-static-libgo.patch
 BuildRequires:  bash-completion
 BuildRequires:  device-mapper-devel >= 1.2.68
 BuildRequires:  glibc-devel-static
+%ifarch ppc ppc64 s390x ppc64p7 ppc64l
+BuildRequires:  gcc5-go >= 5.0
+%else
 BuildRequires:  go >= 1.3
+%endif
 BuildRequires:  go-go-md2man
 BuildRequires:  libapparmor-devel
 BuildRequires:  libbtrfs-devel >= 3.8
@@ -67,7 +79,6 @@ Requires:       xz >= 4.9
 Conflicts:      lxc < 1.0
 PreReq:         %fillup_prereq
 BuildRoot:      %{_tmppath}/%{name}-%{version}-build
-ExclusiveArch:  armv7hl x86_64
 
 %description
 Docker complements LXC with a high-level API which operates at the process
@@ -102,9 +113,19 @@ Zsh command line completion support for %{name}.
 %setup -q -n docker
 %patch0 -p1
 %patch1 -p1
+%ifarch ppc ppc64 s390x ppc64p7 ppc64l
+%patch100 -p1
+%patch101 -p1
+%endif
 cp %{SOURCE7} .
 
 %build
+%ifarch ppc ppc64 s390x ppc64p7 ppc64l
+mkdir /tmp/dirty-hack
+ln -s /usr/bin/go-5 /tmp/dirty-hack/go
+export PATH=/tmp/dirty-hack:$PATH
+%endif
+
 export AUTO_GOPATH=1
 export DOCKER_BUILDTAGS="exclude_graphdriver_aufs apparmor selinux"
 export DOCKER_GITCOMMIT=%{git_version}
@@ -139,7 +160,11 @@ ln -sf /sbin/service $RPM_BUILD_ROOT/usr/sbin/rcdocker
 install -D -m 0644 %SOURCE3 %{buildroot}%{_prefix}/lib/udev/rules.d/80-%{name}.rules
 
 # sysconfig file
+%ifarch ppc64le
+install -D -m 644 %SOURCE100 %{buildroot}/var/adm/fillup-templates/sysconfig.docker
+%else
 install -D -m 644 %SOURCE4 %{buildroot}/var/adm/fillup-templates/sysconfig.docker
+%endif
 
 # install manpages
 install -d %{buildroot}%{_mandir}/man1

gcc-go-build-static-libgo.patch

@@ -0,0 +1,24 @@
+Index: docker/project/make/.dockerinit
+===================================================================
+--- docker.orig/project/make/.dockerinit
++++ docker/project/make/.dockerinit
+@@ -3,6 +3,7 @@ set -e
+ 
+ # dockerinit still needs to be a static binary, even if docker is dynamic
+ go build \
++	-gccgoflags="-static-libgo" \
+ 	-o "$DEST/dockerinit-$VERSION" \
+ 	"${BUILDFLAGS[@]}" \
+ 	-ldflags "
+Index: docker/project/make/binary
+===================================================================
+--- docker.orig/project/make/binary
++++ docker/project/make/binary
+@@ -12,6 +12,7 @@ if [[ "$(uname -s)" == CYGWIN* ]]; then
+ fi
+ 
+ go build \
++	-gccgoflags="-static-libgo" \
+ 	-o "$DEST/$BINARY_FULLNAME" \
+ 	"${BUILDFLAGS[@]}" \
+ 	-ldflags "

ignore-dockerinit-checksum.patch

@@ -0,0 +1,13 @@
+Index: docker/utils/utils.go
+===================================================================
+--- docker.orig/utils/utils.go
++++ docker/utils/utils.go
+@@ -111,7 +111,7 @@ func isValidDockerInitPath(target string
+ 		}
+ 		return os.SameFile(targetFileInfo, selfPathFileInfo)
+ 	}
+-	return dockerversion.INITSHA1 != "" && dockerInitSha1(target) == dockerversion.INITSHA1
++	return true
+ }
+ 
+ // Figure out the path of our dockerinit (which may be SelfPath())

sysconfig.docker.ppc64le

@@ -0,0 +1,10 @@
+
+## Path           : System/Management
+## Description    : Extra cli switches for docker daemon
+## Type           : string
+## Default        : ""
+## ServiceRestart : docker
+#
+
+# TODO: remove it once we fix the real issue
+DOCKER_OPTS=" -iptables=false "