diff -r ca4c6f590a08 -r 4c3a69b9723a src/cx/hash_key.h
--- a/src/cx/hash_key.h	Mon Feb 10 21:30:51 2025 +0100
+++ b/src/cx/hash_key.h	Mon Feb 10 20:59:02 2025 +0100
@@ -76,6 +76,7 @@
  * @see cx_hash_key()
  */
 cx_attr_nonnull
+cx_attr_export
 void cx_hash_murmur(CxHashKey *key);
 
 /**
@@ -88,6 +89,7 @@
  */
 cx_attr_nodiscard
 cx_attr_cstr_arg(1)
+cx_attr_export
 CxHashKey cx_hash_key_str(const char *str);
 
 /**
@@ -99,6 +101,7 @@
  */
 cx_attr_nodiscard
 cx_attr_access_r(1, 2)
+cx_attr_export
 CxHashKey cx_hash_key_bytes(
         const unsigned char *bytes,
         size_t len
@@ -117,6 +120,7 @@
  */
 cx_attr_nodiscard
 cx_attr_access_r(1, 2)
+cx_attr_export
 CxHashKey cx_hash_key(
         const void *obj,
         size_t len