ruby: fix the libucontext linkage on ppc-musl for real

srcpkgs/ruby/template

@@ -37,7 +37,10 @@ case "$XBPS_TARGET_MACHINE" in
 	ppc64*) # Default is ucontext on BE, but ppc64le really just means ELFv2
 		configure_args+=" --with-coroutine=ppc64le"
 		;;
-	ppc-musl) makedepends+=" libucontext-devel";;
+	ppc-musl)
+		makedepends+=" libucontext-devel"
+		configure_args+=" LIBS=-lucontext"
+		;;
 esac
 
 if [ "$CROSS_BUILD" ]; then
@@ -49,13 +52,6 @@ post_patch() {
 
 	echo "Patching out using binary gems for non-glibc..."
 	patch -sNp1 -i ${FILESDIR}/rubygems-avoid-platform-specific-gems.patch
-
-	case "$XBPS_TARGET_MACHINE" in
-		ppc-musl)
-			vsed -i 's,^EXTLIBS =$,EXTLIBS = -lucontext,' template/Makefile.in
-			vsed -i 's, \-lc\",-lc -lucontext\",g' configure
-			;;
-	esac
 }
 
 pre_build() {