Sat Jun 15 18:13:43 1996 Roland McGrath <roland@delasyd.gnu.ai.mit.edu>

* sysdeps/unix/sysv/linux/Dist: Add sys/klog.h.

	* elf/dl-open.c (_dl_open): Remove PARENT argument, pass null.
	* elf/link.h: Update prototype.
	* elf/dl-load.c (_dl_map_object): If dependents' DT_RPATHs don't find
	NAME, try the DT_RPATH of the executable itself if dynamic.
	* elf/dlopen.c (dlopen): Don't pass first arg to _dl_open.

	* elf/dl-load.c (_dl_map_object): Exit DT_RPATH checking loop when an
	open succeeds.

	* Makerules (build-shlib): Give -L opts for each elt of $(rpath-link).

	* sysdeps/mach/hurd/Makefile (sysdep-LDFLAGS): Variable removed.
	(rpath-link): Append to this instead.

ChangeLog

@@ -1,3 +1,21 @@
+Sat Jun 15 18:13:43 1996  Roland McGrath  <roland@delasyd.gnu.ai.mit.edu>
+
+	* sysdeps/unix/sysv/linux/Dist: Add sys/klog.h.
+
+	* elf/dl-open.c (_dl_open): Remove PARENT argument, pass null.
+	* elf/link.h: Update prototype.
+	* elf/dl-load.c (_dl_map_object): If dependents' DT_RPATHs don't find
+	NAME, try the DT_RPATH of the executable itself if dynamic.
+	* elf/dlopen.c (dlopen): Don't pass first arg to _dl_open.
+
+	* elf/dl-load.c (_dl_map_object): Exit DT_RPATH checking loop when an
+	open succeeds.
+
+	* Makerules (build-shlib): Give -L opts for each elt of $(rpath-link).
+
+	* sysdeps/mach/hurd/Makefile (sysdep-LDFLAGS): Variable removed.
+	(rpath-link): Append to this instead.
+
 Fri Jun 14 01:51:47 1996  Roland McGrath  <roland@delasyd.gnu.ai.mit.edu>
 
 	* version.c (banner): New static const variable, complete version

Makerules

@@ -486,7 +486,7 @@ define build-shlib
 $(LINK.o) -shared -o $@ $(sysdep-LDFLAGS) $(config-LDFLAGS)  \
 	  -Wl,-soname=lib$(libprefix)$(@F:lib%.so=%).so$($(@F)-version) \
 	  $(LDFLAGS.so) $(LDFLAGS-$(@F:lib%.so=%).so) \
-	  -Wl,-rpath-link=$(common-objdir) \
+	  -L$(subst :, -L,$(rpath-link)) -Wl,-rpath-link=$(rpath-link) \
 	  -Wl,--whole-archive $^ $(no-whole-archive) \
 	  $(LDLIBS-$(@F:lib%.so=%).so)
 endef

elf/dl-load.c

@@ -469,13 +469,24 @@ _dl_map_object (struct link_map *loader, const char *name, int type)
 	}
 
       fd = -1;
-      for (l = loader; l; l = l->l_loader)
+
+      /* First try the DT_RPATH of the dependent object that caused NAME
+	 to be loaded.  Then that object's dependent, and on up.  */
+      for (l = loader; fd == -1 && l; l = l->l_loader)
 	if (l && l->l_info[DT_RPATH])
 	  trypath ((const char *) (l->l_addr +
 				   l->l_info[DT_STRTAB]->d_un.d_ptr +
 				   l->l_info[DT_RPATH]->d_un.d_val));
+      /* If dynamically linked, try the DT_RPATH of the executable itself.  */
+      l = _dl_loaded;
+      if (fd == -1 && l && l->l_type != lt_loaded)
+	trypath ((const char *) (l->l_addr +
+				 l->l_info[DT_STRTAB]->d_un.d_ptr +
+				 l->l_info[DT_RPATH]->d_un.d_val));
+      /* Try an environment variable (unless setuid).  */
       if (fd == -1 && ! _dl_secure)
 	trypath (getenv ("LD_LIBRARY_PATH"));
+      /* Finally, try the default path.  */
       if (fd == -1)
 	{
 	  extern const char *_dl_rpath;	/* Set in rtld.c. */

elf/dl-open.c

@@ -25,22 +25,15 @@ Cambridge, MA 02139, USA.  */
 size_t _dl_global_scope_alloc;
 
 struct link_map *
-_dl_open (struct link_map *parent, const char *file, int mode)
+_dl_open (const char *file, int mode)
 {
   struct link_map *new, *l;
   ElfW(Addr) init;
   struct r_debug *r;
 
 
-#ifdef PIC
-  if (! parent)
-    /* If no particular dependent object caused this load,
-       then use the DT_RPATH of the executable itself.  */
-      parent = _dl_loaded;
-#endif
-
   /* Load the named object.  */
-  new = _dl_map_object (parent, file, lt_loaded);
+  new = _dl_map_object (NULL, file, lt_loaded);
   if (new->l_searchlist)
     /* It was already open.  */
     return new;

elf/dlopen.c

@@ -28,7 +28,7 @@ dlopen (const char *file, int mode)
 
   void doit (void)
     {
-      new = _dl_open (_dl_loaded, file ?: "", mode);
+      new = _dl_open (file ?: "", mode);
     }
 
   return _dlerror_run (doit) ? NULL : new;

elf/link.h

@@ -205,11 +205,9 @@ extern void _dl_setup_hash (struct link_map *map);
 
 
 /* Open the shared object NAME, relocate it, and run its initializer if it
-   hasn't already been run.  LOADER's DT_RPATH is used in searching for
+   hasn't already been run.  MODE is as for `dlopen' (see <dlfcn.h>).  If
-   NAME.  MODE is as for `dlopen' (see <dlfcn.h>).  If the object is
+   the object is already opened, returns its existing map.  */
-   already opened, returns its existing map.  */
+extern struct link_map *_dl_open (const char *name, int mode);
-extern struct link_map *_dl_open (struct link_map *loader,
-				  const char *name, int mode);
 
 /* Close an object previously opened by _dl_open.  */
 extern void _dl_close (struct link_map *map);

sysdeps/mach/hurd/Makefile

@@ -104,7 +104,9 @@ endif
 # For the shared library, we don't need to do the linker script machination.
 # Instead, we specify the required libraries when building the shared object.
 LDLIBS-c.so = -lmachuser -lhurduser
-sysdep-LDFLAGS += -Wl,-rpath-link=$(..)mach:$(..)hurd
+ifndef objpfx
+rpath-link += $(..)mach:$(..)hurd
+endif
 
 
 endif	# in-Makerules

sysdeps/unix/sysv/linux/Dist

@@ -4,6 +4,7 @@ nfs/nfs.h
 sys/acct.h
 sys/io.h
 sys/kdaemon.h
+sys/klog.h
 sys/module.h
 sys/mount.h
 sys/quota.h