config/functions: add go_configure() helpers

config/functions

@@ -911,6 +911,47 @@ target_has_feature() {
   listcontains "$TARGET_FEATURES" "$1"
 }
 
+# configure variables for go
+go_configure() {
+  unset GOARCH GOARM
+  case ${TARGET_ARCH} in
+    x86_64)
+      export GOARCH=amd64
+      ;;
+    arm)
+      export GOARCH=arm
+
+      case ${TARGET_CPU} in
+        arm1176jzf-s)
+          export GOARM=6
+          ;;
+        *)
+          export GOARM=7
+          ;;
+      esac
+      ;;
+    aarch64)
+      export GOARCH=arm64
+      ;;
+  esac
+
+  export GOOS=linux
+  export GOROOT=${TOOLCHAIN}/lib/golang
+  export PATH=${PATH}:${GOROOT}/bin
+
+  go_configure_path
+
+  export CGO_ENABLED=1
+  export CGO_NO_EMULATION=1
+  export CGO_CFLAGS=$CFLAGS
+}
+
+go_configure_path() {
+  export GOLANG=${TOOLCHAIN}/lib/golang/bin/go
+  export GOPATH=${PKG_BUILD}/.gopath
+  export GOFLAGS="-modcacherw"
+}
+
 # find path for matching file or directory, searching standard directory hierarchy, using optional default
 # if a path is located it will be set in FOUND_PATH and exit code will be 0.
 find_path() {