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-rw-r--r--src/includes/hidden-visibility.h26
1 files changed, 26 insertions, 0 deletions
diff --git a/src/includes/hidden-visibility.h b/src/includes/hidden-visibility.h
new file mode 100644
index 0000000..bc7e338
--- /dev/null
+++ b/src/includes/hidden-visibility.h
@@ -0,0 +1,26 @@
+/*
+ * Written by Mike Frysinger
+ * Placed in the Public Domain
+ */
+
+#ifndef _HIDDEN_VISIBILITY_H_
+#define _HIDDEN_VISIBILITY_H_
+
+#if defined(__ELF__) && defined(__GNUC__)
+# define __hidden_asmname(name) __hidden_asmname1 (__USER_LABEL_PREFIX__, name)
+# define __hidden_asmname1(prefix, name) __hidden_asmname2(prefix, name)
+# define __hidden_asmname2(prefix, name) #prefix name
+# define __hidden_proto(name, internal) \
+ extern __typeof (name) name __asm__ (__hidden_asmname (#internal)) \
+ __attribute__ ((visibility ("hidden")));
+# define __hidden_ver(local, internal, name) \
+ extern __typeof (name) __EI_##name __asm__(__hidden_asmname (#internal)); \
+ extern __typeof (name) __EI_##name __attribute__((alias (__hidden_asmname1 (,#local))))
+# define hidden_proto(name) __hidden_proto(name, __RC_##name)
+# define hidden_def(name) __hidden_ver(__RC_##name, name, name);
+#else
+# define hidden_proto(name)
+# define hidden_def(name)
+#endif
+
+#endif