Use a patched golang version for building linux/arm, fixes kube-apiserver

hack/lib/golang.sh

@@ -100,7 +100,6 @@ else
     linux/amd64
     darwin/amd64
     windows/amd64
-    linux/arm
   )
 fi
 
@@ -226,7 +225,7 @@ kube::golang::current_platform() {
 # for that platform.
 kube::golang::set_platform_envs() {
   [[ -n ${1-} ]] || {
-    kube::log::error_exit "!!! Internal error.  No platform set in kube::golang::set_platform_envs"
+    kube::log::error_exit "!!! Internal error. No platform set in kube::golang::set_platform_envs"
   }
 
   export GOOS=${platform%/*}
@@ -240,6 +239,7 @@ kube::golang::set_platform_envs() {
     if [[ ${platform} == "linux/arm" ]]; then
       export CGO_ENABLED=1
       export CC=arm-linux-gnueabi-gcc
+      export GOROOT=${K8S_PATCHED_GOROOT}
     elif [[ ${platform} == "linux/arm64" ]]; then
       export CGO_ENABLED=1
       export CC=aarch64-linux-gnu-gcc
@@ -253,6 +253,7 @@ kube::golang::set_platform_envs() {
 kube::golang::unset_platform_envs() {
   unset GOOS
   unset GOARCH
+  unset GOROOT
   unset CGO_ENABLED
   unset CC
 }
@@ -477,6 +478,11 @@ kube::golang::build_binaries_for_platform() {
       kube::golang::fallback_if_stdlib_not_installable;
   fi
 
+  # TODO: Remove this temporary workaround when we have the official golang linker working
+  if [[ ${platform} == "linux/arm" ]]; then
+    gogcflags="${gogcflags} -largemodel"
+  fi
+
   if [[ -n ${use_go_build:-} ]]; then
     kube::log::progress "    "
     for binary in "${statics[@]:+${statics[@]}}"; do