community/go: force external link for ppc64le for now

This is a workaround for an upstream Go issues. Some tests fail as they
also try to use internal link mode, since this is (hopefully) a
temporary workaround just disable tests on ppc64le for now.

See golang/go#51787 (comment)

community/go/APKBUILD

@@ -15,6 +15,7 @@ checkdepends="binutils-gold"
 subpackages="$pkgname-doc"
 source="https://go.dev/dl/go$pkgver.src.tar.gz
 	allow-unshare-to-return-enosys.patch
+	force-external-link-on-ppc64le.patch
 	"
 case "$CARCH" in
 	arm*|aarch64) depends="binutils-gold";;
@@ -118,6 +119,13 @@ case "$CARCH" in
 x86_64|s390x|aarch64) export GO_LDFLAGS=-buildmode=pie ;;
 esac
 
+# Disable tests on ppc64 for now since they fail due to the
+# force-external-link-on-ppc64le.patch we employ currently.
+# See the patch description for details.
+case "$CARCH" in
+ppc64le) options="!check" ;;
+esac
+
 prepare() {
 	default_prepare
 
@@ -198,4 +206,5 @@ package() {
 sha512sums="
 f10356df9099e4d027415be5c73bd2551f2f941a31feb21e1ccc03b7d8faa1844f0a639a508e990712e11ec335675e57504edb323fa1eee63e1d09b8523b3b0d  go1.18.src.tar.gz
 6017caacf77c2911e9e882878fdaa2ed066b76b7e97b2ad776bc33d96b21cabc802966473946642c86a8f985c69adcc5e7ea61684f6d0dbacd468a6aad687229  allow-unshare-to-return-enosys.patch
+1ad16c8057c891689aa19dbc87efaf8ba6f9dc5592d178f32e441dc2da35647ae75dc1c00f765f7c244f0f486acc1e3db35d4b23533616c90937b2a6c0cd0d0a  force-external-link-on-ppc64le.patch
 "

community/go/force-external-link-on-ppc64le.patch

@@ -0,0 +1,13 @@
+See https://github.com/golang/go/issues/51787#issuecomment-1072700785
+
+--- go.orig/src/cmd/link/internal/ld/config.go
++++ go/src/cmd/link/internal/ld/config.go
+@@ -212,7 +212,7 @@
+ 		// windows/arm64 internal linking is not implemented.
+ 		return true, buildcfg.GOOS + "/" + buildcfg.GOARCH + " does not support internal cgo"
+ 	}
+-	if iscgo && ctxt.Arch == sys.ArchPPC64 {
++	if iscgo && (ctxt.Arch == sys.ArchPPC64 || ctxt.Arch == sys.ArchPPC64LE) {
+ 		// Big Endian PPC64 cgo internal linking is not implemented for aix or linux.
+ 		return true, buildcfg.GOOS + " does not support internal cgo"
+ 	}