From cdca62a64e748880a5a489cadfbb863853b02f86 Mon Sep 17 00:00:00 2001
From: Lukas Kollmer <hey@lukaskollmer.de>
Date: Mon, 2 Feb 2026 13:24:01 +0100
Subject: [PATCH 1/2] SPM: ZSTDLIB_STATIC_API

---
 Package.swift            |  3 ++-
 lib/spm/module.modulemap | 14 ++++++++++++++
 lib/spm/zdict_shim.h     | 17 +++++++++++++++++
 lib/spm/zstd_shim.h      | 17 +++++++++++++++++
 4 files changed, 50 insertions(+), 1 deletion(-)
 create mode 100644 lib/spm/module.modulemap
 create mode 100644 lib/spm/zdict_shim.h
 create mode 100644 lib/spm/zstd_shim.h

diff --git a/Package.swift b/Package.swift
index 97f2c6a5251..44127612b60 100644
--- a/Package.swift
+++ b/Package.swift
@@ -12,6 +12,7 @@ let package = Package(
         // Products define the executables and libraries a package produces, and make them visible to other packages.
         .library(
             name: "libzstd",
+            type: .static,
             targets: [ "libzstd" ])
     ],
     dependencies: [
@@ -25,7 +26,7 @@ let package = Package(
             name: "libzstd",
             path: "lib",
             sources: [ "common", "compress", "decompress", "dictBuilder" ],
-            publicHeadersPath: ".",
+            publicHeadersPath: "spm",
             cSettings: [
                 .headerSearchPath(".")
             ])
diff --git a/lib/spm/module.modulemap b/lib/spm/module.modulemap
new file mode 100644
index 00000000000..0f1051efbfc
--- /dev/null
+++ b/lib/spm/module.modulemap
@@ -0,0 +1,14 @@
+module libzstd [extern_c] {
+    header "zstd_shim.h"
+    export *
+
+    module dictbuilder [extern_c] {
+        header "zdict_shim.h"
+        export *
+    }
+
+    module errors [extern_c] {
+        header "../zstd_errors.h"
+        export *
+    }
+}
diff --git a/lib/spm/zdict_shim.h b/lib/spm/zdict_shim.h
new file mode 100644
index 00000000000..06521184ba7
--- /dev/null
+++ b/lib/spm/zdict_shim.h
@@ -0,0 +1,17 @@
+/*
+ * Copyright (c) Meta Platforms, Inc. and affiliates.
+ * All rights reserved.
+ *
+ * This source code is licensed under both the BSD-style license (found in the
+ * LICENSE file in the root directory of this source tree) and the GPLv2 (found
+ * in the COPYING file in the root directory of this source tree).
+ * You may select, at your option, one of the above-listed licenses.
+ */
+
+#ifndef ZSTD_ZDICT_SHIM_H
+#define ZSTD_ZDICT_SHIM_H
+
+#define ZSTD_STATIC_LINKING_ONLY
+#include "../zdict.h"
+
+#endif /* ZSTD_SHIM_H */
diff --git a/lib/spm/zstd_shim.h b/lib/spm/zstd_shim.h
new file mode 100644
index 00000000000..ede95c51f72
--- /dev/null
+++ b/lib/spm/zstd_shim.h
@@ -0,0 +1,17 @@
+/*
+ * Copyright (c) Meta Platforms, Inc. and affiliates.
+ * All rights reserved.
+ *
+ * This source code is licensed under both the BSD-style license (found in the
+ * LICENSE file in the root directory of this source tree) and the GPLv2 (found
+ * in the COPYING file in the root directory of this source tree).
+ * You may select, at your option, one of the above-listed licenses.
+ */
+
+#ifndef ZSTD_SHIM_H
+#define ZSTD_SHIM_H
+
+#define ZSTD_STATIC_LINKING_ONLY
+#include "../zstd.h"
+
+#endif /* ZSTD_SHIM_H */

From 1fc714af07468554b4c452662fd33ec3870f0312 Mon Sep 17 00:00:00 2001
From: Lukas Kollmer <hey@lukaskollmer.de>
Date: Mon, 2 Feb 2026 13:58:14 +0100
Subject: [PATCH 2/2] x

---
 lib/spm/zdict_shim.h | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/lib/spm/zdict_shim.h b/lib/spm/zdict_shim.h
index 06521184ba7..48d6cbd950a 100644
--- a/lib/spm/zdict_shim.h
+++ b/lib/spm/zdict_shim.h
@@ -14,4 +14,4 @@
 #define ZSTD_STATIC_LINKING_ONLY
 #include "../zdict.h"
 
-#endif /* ZSTD_SHIM_H */
+#endif /* ZSTD_ZDICT_SHIM_H */