Accepting request 967639 from home:jfkw:branches:devel:languages:go

- Template gcc-go.patch to substitute gcc_go_version and eliminate
  multiple similar patches each with hardcoded gcc go binary name.
  gcc-go.patch inserts gcc-go binary name e.g. go-8 to compensate
  for current lack of gcc-go update-alternatives usage.
  * add gcc-go.patch
  * drop gcc6-go.patch
  * drop gcc7-go.patch

- For SLE-12 set gcc_go_version to 8 to bootstrap using gcc8-go.
  gcc6-go and gcc7-go no longer successfully bootstrap go1.17 or
  go1.18 on SLE-12 aarch64 ppc64le or s390x.
  * gcc6-go fails with errors e.g. libnoder.a(_go_.o):(.toc+0x0):
    undefined reference to `__go_pimt__I4_DiagFrN4_boolee3

OBS-URL: https://build.opensuse.org/request/show/967639
OBS-URL: https://build.opensuse.org/package/show/devel:languages:go/go1.18?expand=0&rev=12

gcc-go.patch

@@ -2,7 +2,7 @@ Index: go/src/cmd/dist/buildtool.go
 ===================================================================
 --- go.orig/src/cmd/dist/buildtool.go
 +++ go/src/cmd/dist/buildtool.go
-@@ -190,7 +190,7 @@ func bootstrapBuildTools() {
+@@ -205,7 +205,7 @@ func bootstrapBuildTools() {
  	// only applies to the final cmd/go binary, but that's OK: if this is Go 1.10
  	// or later we don't need to disable inlining to work around bugs in the Go 1.4 compiler.
  	cmd := []string{
@@ -24,7 +24,7 @@ Index: go/src/make.bash
  # tried for all "go" in $PATH. $HOME/go1.4 by default.
  
  set -e
-@@ -162,8 +162,8 @@
+@@ -176,8 +176,8 @@
  		fi
  	fi
  done; unset IFS
@@ -35,7 +35,7 @@ Index: go/src/make.bash
  	echo "Set \$GOROOT_BOOTSTRAP to a working Go tree >= Go 1.4." >&2
  	exit 1
  fi
-@@ -181,7 +181,7 @@
+@@ -195,7 +195,7 @@
  	exit 1
  fi
  rm -f cmd/dist/dist
@@ -48,7 +48,7 @@ Index: go/src/make.rc
 ===================================================================
 --- go.orig/src/make.rc
 +++ go/src/make.rc
-@@ -52,7 +52,7 @@ GOROOT = `{cd .. && pwd}
+@@ -60,7 +60,7 @@ GOROOT = `{cd .. && pwd}
  if(! ~ $#GOROOT_BOOTSTRAP 1)
  	GOROOT_BOOTSTRAP = $home/go1.4
  for(p in $path){
@@ -57,7 +57,7 @@ Index: go/src/make.rc
  		if(go_exe = `{path=$p whatis go}){
  			goroot = `{GOROOT='' $go_exe env GOROOT}
  			if(! ~ $goroot $GOROOT){
-@@ -61,7 +61,7 @@ for(p in $path){
+@@ -73,7 +73,7 @@ for(p in $path){
  		}
  	}
  }
@@ -66,7 +66,7 @@ Index: go/src/make.rc
  	echo 'ERROR: Cannot find '$GOROOT_BOOTSTRAP'/bin/go.' >[1=2]
  	echo 'Set $GOROOT_BOOTSTRAP to a working Go tree >= Go 1.4.' >[1=2]
  	exit bootstrap
-@@ -75,7 +75,7 @@ if(~ $GOROOT_BOOTSTRAP $GOROOT){
+@@ -87,7 +87,7 @@ if(~ $GOROOT_BOOTSTRAP $GOROOT){
  echo 'Building Go cmd/dist using '^$GOROOT_BOOTSTRAP
  if(~ $#vflag 1)
  	echo cmd/dist