[PATCH] always export the symbols for the proc_service interface

[Norbert Lange <nolange79@gmail.com>]

Compiling GDB with '-fvisibility=hidden' will remove the
symbols that should be exported.
This patch explicitly marks them as visible.

gdb/ChangeLog

	PR build/24805
        * gdbsupport/gdb_proc_service.h: push/pop visibility
        attribute for exported functions.
---
 gdb/gdbsupport/gdb_proc_service.h | 17 +++++++++++++++++
 1 file changed, 17 insertions(+)

diff --git a/gdb/gdbsupport/gdb_proc_service.h b/gdb/gdbsupport/gdb_proc_service.h
index 8565da3286..72abb5c1c0 100644
--- a/gdb/gdbsupport/gdb_proc_service.h
+++ b/gdb/gdbsupport/gdb_proc_service.h
@@ -23,6 +23,11 @@
 
 #ifdef HAVE_PROC_SERVICE_H
 
+/* ensure the symbols are public, even if the default is hidden */
+#if __GNUC__ >= 4
+#pragma GCC visibility push(default)
+#endif
+
 /* glibc's proc_service.h doesn't wrap itself with extern "C".  Need
    to do it ourselves.  */
 EXTERN_C_PUSH
@@ -31,6 +36,10 @@ EXTERN_C_PUSH
 
 EXTERN_C_POP
 
+#if __GNUC__ >= 4
+#pragma GCC visibility pop
+#endif
+
 #else /* HAVE_PROC_SERVICE_H */
 
 /* The following fallback definitions have been imported and adjusted
@@ -69,6 +78,10 @@ EXTERN_C_POP
 # endif
 #endif
 
+#if __GNUC__ >= 4
+#pragma GCC visibility push(default)
+#endif
+
 EXTERN_C_PUSH
 
 /* Functions in this interface return one of these status codes.  */
@@ -168,6 +181,10 @@ extern void ps_plog (const char *fmt, ...);
 
 EXTERN_C_POP
 
+#if __GNUC__ >= 4
+#pragma GCC visibility pop
+#endif
+
 #endif /* HAVE_PROC_SERVICE_H */
 
 #endif /* COMMON_GDB_PROC_SERVICE_H */
-- 
2.24.1