X-Git-Url: https://git.distorted.org.uk/~mdw/catacomb-python/blobdiff_plain/202d82b7a790102c5da9dbb54d36e731e326f3f0..740847afe208bb8f33e7d6cf642acaf4aa739f6a:/catacomb-python.h

diff --git a/catacomb-python.h b/catacomb-python.h
index 6c1ae21..bf3d426 100644
--- a/catacomb-python.h
+++ b/catacomb-python.h
@@ -120,6 +120,21 @@
 #include <catacomb/share.h>
 #include <catacomb/gfshare.h>
 
+/*----- Other preliminaries -----------------------------------------------*/
+
+#define GOBBLE_SEMI extern int notexist
+#if defined(__GNUC__) && defined(__ELF__)
+#  define PRIVATE_SYMBOLS _Pragma("GCC visibility push(hidden)") GOBBLE_SEMI
+#  define PUBLIC_SYMBOLS _Pragma("GCC visibility pop") GOBBLE_SEMI
+#  define EXPORT __attribute__((__visibility__("default")))
+#else
+#  define PRIVATE_SYMBOLS GOBBLE_SEMI
+#  define PUBLIC_SYMBOLS GOBBLE_SEMI
+#  define EXPORT
+#endif
+
+PRIVATE_SYMBOLS;
+
 /*----- Utility macros ----------------------------------------------------*/
 
 #define RETURN_OBJ(obj) do { Py_INCREF(obj); return (obj); } while (0)