Add external_zstd build config file to build against external libzstd

dopuskh3 · dopuskh3 · commit 88365f322a09 · 2021-11-19T18:50:35.000+01:00
diff --git a/external_zstd.go b/external_zstd.go
@@ -0,0 +1,8 @@
+//go:build external_libzstd
+// +build external_libzstd
+
+package zstd
+
+// #cgo CFLAGS: -DUSE_EXTERNAL_ZSTD
+// #cgo pkg-config: libzstd
+import "C"
