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/xregex.h b/include/xregex.h
index 23cf19c..d4bf732 100644
--- a/include/xregex.h
+++ b/include/xregex.h
@@ -12,7 +12,16 @@
#define __BB_REGEX__
#include <regex.h>
+
+#if __GNUC_PREREQ(4,1)
+# pragma GCC visibility push(hidden)
+#endif
+
char* regcomp_or_errmsg(regex_t *preg, const char *regex, int cflags);
void xregcomp(regex_t *preg, const char *regex, int cflags);
+#if __GNUC_PREREQ(4,1)
+# pragma GCC visibility pop
+#endif
+
#endif