* Makefile.in (ldexp.o, ldctor.o, ldlang.o, ldmain.o, ldwrite.o, lexsup.o,

mri.o, relax.o): Indicate dependence on ldgram.h.

* ld.h (strip_symbols_type): Add value STRIP_SOME.
* ldgram.y (OPTION_RETAIN_SYMBOLS_FILE): New terminal token.
(lang_add_keepsyms_file): New function.
* ldlex.l: Handle "-retain-symbols-file".
* ldsym.c (keepsyms_file, kept_syms): New vars.
(process_keepsyms): New functihon; reads file, marks symbols for saving.
(write_file_locals): File symbols should always be kept.
(ldsym_write): Warn about "-retain-symbols-file" overriding "-S" and "-s".
Process retain-symbols file before setting symtab.
* ldsym.h (SYM_KEEP): New flag for ldsym_type flags.
(keepsyms_file, kept_syms): Declare them.

* ldmain.c (main): Non-fatal errors should still cause non-zero exit status
even with -r.

1 files changed, 5 insertions, 0 deletions

diff --git a/ld/ldsym.h b/ld/ldsym.h
index 90ba007..fdd24da 100644
--- a/ld/ldsym.h
+++ b/ld/ldsym.h
@@ -53,9 +53,14 @@ typedef struct user_symbol_struct
 #define SYM_WARNING 2
   /* IF this is an alias for another symbol */
 #define SYM_INDIRECT 4
+  /* If this symbol explicitly should be kept, despite discarding
+     most others.  */
+#define SYM_KEEP 8
   int flags;
 } ldsym_type;
 
+extern CONST char *keepsyms_file;
+extern int kept_syms;
 
 PROTO(ldsym_type *, ldsym_get, (CONST char *));
 PROTO(ldsym_type *, ldsym_get_soft, (CONST char *));