Use intra-DSO calls when we build libbusybox. No-op for normal build.
This was Bernhard Fischer' idea.
text data bss dec hex filename
773549 7781 9740 791070 c121e busybox.t7/0_lib/libbusybox.so.1.11.0.svn_unstripped
769683 7397 9740 786820 c0184 busybox.t9t/0_lib/libbusybox.so.1.11.0.svn_unstripped
diff --git a/include/unarchive.h b/include/unarchive.h
index b49e6cb..a6b0477 100644
--- a/include/unarchive.h
+++ b/include/unarchive.h
@@ -2,6 +2,10 @@
#ifndef __UNARCHIVE_H__
#define __UNARCHIVE_H__
+#if __GNUC_PREREQ(4,1)
+# pragma GCC visibility push(hidden)
+#endif
+
#define ARCHIVE_PRESERVE_DATE 1
#define ARCHIVE_CREATE_LEADING_DIRS 2
#define ARCHIVE_EXTRACT_UNCONDITIONAL 4
@@ -126,4 +130,8 @@
#define open_transformer(src_fd, transformer, transform_prog) open_transformer(src_fd, transform_prog)
#endif
+#if __GNUC_PREREQ(4,1)
+# pragma GCC visibility pop
+#endif
+
#endif