Add files for building golang 1.12.9

The contents of the files directory are all directly extracted
from the golang 1.11.2 src rpm.

The spec file has been updated to build a src tarball
for go 1.12.9.

The modifications can be viewed by examining a diff
of the golang.spec and the golang.spec.orig files.

Change-Id: Ib1bdde20d37147d08d38449d1db9c903cef38e7a
Story: 2005860
Task: 35840
Depends-On: https://review.opendev.org/#/c/671147
Signed-off-by: Al Bailey <Al.Bailey@windriver.com>

languages/golang/centos/Readme.rst

@@ -0,0 +1,5 @@
+The spec file used here was from the golang 1.11.2 src rpm.
+
+The orig file is included to help show modifications made to that
+spec file, to help understand which changes were needed and to
+assist with future upversioning.

languages/golang/centos/build_srpm.data

@@ -0,0 +1,8 @@
+VERSION=1.12.9
+TAR_NAME=go
+TAR="$TAR_NAME$VERSION.src.tar.gz"
+CONTRIB="$TAR_NAME-contrib-v$CON_VERSION.tar.gz"
+
+COPY_LIST="${CGCS_BASE}/downloads/$TAR $FILES_BASE/*"
+
+TIS_PATCH_VER=1

languages/golang/centos/files/0001-Don-t-use-the-bundled-tzdata-at-runtime-except-for-t.patch

@@ -0,0 +1,88 @@
+From edce31a2904846ae74e3c011f2cf5fddc963459e Mon Sep 17 00:00:00 2001
+From: =?UTF-8?q?Jakub=20=C4=8Cajka?= <jcajka@redhat.com>
+Date: Thu, 22 Mar 2018 12:07:32 +0100
+Subject: [PATCH 1/3] Don't use the bundled tzdata at runtime, except for the
+ internal test suite
+
+---
+ src/time/internal_test.go | 7 +++++--
+ src/time/zoneinfo_test.go | 3 ++-
+ src/time/zoneinfo_unix.go | 2 --
+ 3 files changed, 7 insertions(+), 5 deletions(-)
+
+diff --git a/src/time/internal_test.go b/src/time/internal_test.go
+index 76d5524124..e81ace5f64 100644
+--- a/src/time/internal_test.go
++++ b/src/time/internal_test.go
+@@ -4,13 +4,15 @@
+ 
+ package time
+ 
++import "runtime"
++
+ func init() {
+ 	// force US/Pacific for time zone tests
+ 	ForceUSPacificForTesting()
+ }
+ 
+ func initTestingZone() {
+-	z, err := loadLocation("America/Los_Angeles", zoneSources[len(zoneSources)-1:])
++	z, err := loadLocation("America/Los_Angeles", zoneSources)
+ 	if err != nil {
+ 		panic("cannot load America/Los_Angeles for testing: " + err.Error())
+ 	}
+@@ -21,8 +23,9 @@ func initTestingZone() {
+ var OrigZoneSources = zoneSources
+ 
+ func forceZipFileForTesting(zipOnly bool) {
+-	zoneSources = make([]string, len(OrigZoneSources))
++	zoneSources = make([]string, len(OrigZoneSources)+1)
+ 	copy(zoneSources, OrigZoneSources)
++	zoneSources = append(zoneSources, runtime.GOROOT()+"/lib/time/zoneinfo.zip")
+ 	if zipOnly {
+ 		zoneSources = zoneSources[len(zoneSources)-1:]
+ 	}
+diff --git a/src/time/zoneinfo_test.go b/src/time/zoneinfo_test.go
+index 7a55d4f618..6063ca1195 100644
+--- a/src/time/zoneinfo_test.go
++++ b/src/time/zoneinfo_test.go
+@@ -8,6 +8,7 @@ import (
+ 	"fmt"
+ 	"os"
+ 	"reflect"
++	"runtime"
+ 	"testing"
+ 	"time"
+ )
+@@ -128,7 +129,7 @@ func TestLoadLocationFromTZData(t *testing.T) {
+ 		t.Fatal(err)
+ 	}
+ 
+-	tzinfo, err := time.LoadTzinfo(locationName, time.OrigZoneSources[len(time.OrigZoneSources)-1])
++	tzinfo, err := time.LoadTzinfo(locationName, runtime.GOROOT()+"/lib/time/zoneinfo.zip")
+ 	if err != nil {
+ 		t.Fatal(err)
+ 	}
+diff --git a/src/time/zoneinfo_unix.go b/src/time/zoneinfo_unix.go
+index 88313aa0ed..d9596115ef 100644
+--- a/src/time/zoneinfo_unix.go
++++ b/src/time/zoneinfo_unix.go
+@@ -12,7 +12,6 @@
+ package time
+ 
+ import (
+-	"runtime"
+ 	"syscall"
+ )
+ 
+@@ -22,7 +21,6 @@ var zoneSources = []string{
+ 	"/usr/share/zoneinfo/",
+ 	"/usr/share/lib/zoneinfo/",
+ 	"/usr/lib/locale/TZ/",
+-	runtime.GOROOT() + "/lib/time/zoneinfo.zip",
+ }
+ 
+ func initLocal() {
+-- 
+2.14.3
+

languages/golang/centos/files/0002-syscall-expose-IfInfomsg.X__ifi_pad-on-s390x.patch

@@ -0,0 +1,41 @@
+From 817407fc2d6a861e65086388766f58082d38bc0b Mon Sep 17 00:00:00 2001
+From: Michael Munday <munday@ca.ibm.com>
+Date: Tue, 17 Jan 2017 11:33:38 -0500
+Subject: [PATCH 2/3] syscall: expose IfInfomsg.X__ifi_pad on s390x
+
+Exposing this field on s390x improves compatibility with the other
+linux architectures, all of which already expose it.
+
+Fixes #18628 and updates #18632.
+
+Change-Id: I08e8e1eb705f898cd8822f8bee0d61ce11d514b5
+---
+ src/syscall/ztypes_linux_s390x.go | 12 ++++++------
+ 1 file changed, 6 insertions(+), 6 deletions(-)
+
+diff --git a/src/syscall/ztypes_linux_s390x.go b/src/syscall/ztypes_linux_s390x.go
+index 63c4a83b19..b5894255df 100644
+--- a/src/syscall/ztypes_linux_s390x.go
++++ b/src/syscall/ztypes_linux_s390x.go
+@@ -449,12 +449,12 @@ type RtAttr struct {
+ }
+ 
+ type IfInfomsg struct {
+-	Family uint8
+-	_      uint8
+-	Type   uint16
+-	Index  int32
+-	Flags  uint32
+-	Change uint32
++	Family     uint8
++	X__ifi_pad uint8
++	Type       uint16
++	Index      int32
++	Flags      uint32
++	Change     uint32
+ }
+ 
+ type IfAddrmsg struct {
+-- 
+2.14.3
+

languages/golang/centos/files/fedora.go

@@ -0,0 +1,7 @@
+// +build rpm_crashtraceback
+
+package runtime
+
+func init() {
+	setTraceback("crash")
+}

languages/golang/centos/files/golang-gdbinit

@@ -0,0 +1 @@
+add-auto-load-safe-path /usr/lib/golang/src/runtime/runtime-gdb.py

languages/golang/centos/files/golang-prelink.conf

@@ -0,0 +1,3 @@
+# there are ELF files in src which are testdata and shouldn't be modified
+-b /usr/lib/golang/src
+-b /usr/lib64/golang/src

languages/golang/centos/files/macros.golang

@@ -0,0 +1,8 @@
+# Where to set GOPATH for builds. Like:
+# export GOPATH=$(pwd)/_build:%{gopath}
+%gopath          %{_datadir}/gocode
+
+# for use like:
+# ExclusiveArch:  %{go_arches}
+%go_arches       %{ix86} x86_64 %{arm} aarch64 ppc64le
+