Add DLL export/import support

1 files changed, 5 insertions, 3 deletions

diff --git a/butl/sha256 b/butl/sha256
index a1d0c38..77fa6bd 100644
--- a/butl/sha256
+++ b/butl/sha256
@@ -10,6 +10,8 @@
 #include <cstdint>
 #include <cstddef> // size_t
 
+#include <butl/export>
+
 namespace butl
 {
   // SHA256 checksum calculator.
@@ -19,7 +21,7 @@ namespace butl
   //
   // cerr << sha256 ("123").string () << endl;
   //
-  class sha256
+  class LIBBUTL_EXPORT sha256
   {
   public:
     sha256 ();
@@ -85,14 +87,14 @@ namespace butl
   // like 01:AB:CD:...). Throw invalid_argument if the argument is not a valid
   // SHA256 string.
   //
-  std::string
+  LIBBUTL_EXPORT std::string
   sha256_to_fingerprint (const std::string&);
 
   // Convert a fingerprint (32 colon-separated hex digit pairs) to the SHA256
   // string representation (64 lower case hex digits). Throw invalid_argument
   // if the argument is not a valid fingerprint.
   //
-  std::string
+  LIBBUTL_EXPORT std::string
   fingerprint_to_sha256 (const std::string&);
 };