go: fix linking issues for nativesdk builds

Switch to using an external linker for nativesdk
go, go-runtime, and go package builds, which works
more reliably when building 32-bit SDKs.

(From OE-Core rev: f76779f7ef6636355a5aa5741a736f5234a67fdb)

Signed-off-by: Matt Madison <matt@madison.systems>
Signed-off-by: Otavio Salvador <otavio@ossystems.com.br>
Signed-off-by: Ross Burton <ross.burton@intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

meta/recipes-devtools/go/go-runtime.inc

@@ -45,6 +45,11 @@ do_install() {
 	done
 }
 
+# Remove test binaries that cannot be relocated
+do_install_append_class-nativesdk() {
+	rm -rf ${D}${libdir}/go/src/runtime/pprof/testdata
+}
+
 # These testdata directories aren't needed for builds and contain binaries
 # that can cause errors in sysroot_strip(), so just remove them.
 sysroot_stage_all_append() {

meta/recipes-devtools/go/go-target.inc

@@ -14,6 +14,9 @@ export CC_FOR_TARGET = "${CC}"
 export CXX_FOR_TARGET = "${CXX}"
 export GO_TARGET_INSTALL = "cmd"
 export GO_FLAGS = "-a"
+GO_LDFLAGS = ""
+GO_LDFLAGS_class-nativesdk = "-linkmode external"
+export GO_LDFLAGS
 
 do_configure[noexec] = "1"