* elf/dl-lookup.c (_dl_lookup_symbol): Undefined symbol is nocvs/libc-951116

	error if weak.

	* elf/Makefile (default-rpath): New variable.
	(CPPFLAGS): Append -DDEFAULT_RPATH=....
	* elf/dl-load.c (_dl_map_object): Use DEFAULT_RPATH instead of
	hard-coded "/lib:/usr/lib".

3 files changed, 13 insertions, 3 deletions

diff --git a/elf/Makefile b/elf/Makefile
index 08288f89d5..a37e95d2c5 100644
--- a/elf/Makefile
+++ b/elf/Makefile
@@ -50,6 +50,16 @@ endif
 include ../Rules
 
 
+# Choose the default search path for the dynamic linker based on
+# where we will install libraries.
+ifneq ($(libdir),$(slibdir))
+default-rpath = $(slibdir):$(libdir)
+else
+default-rpath = $(libdir)
+endif
+CPPFLAGS += -DDEFAULT_RPATH='"$(default-rpath)"'
+
+
 # Link together the dynamic linker into a single relocatable object.
 # We use this to produce both the ABI-compliant and Linux-compatible
 # dynamic linker shared objects below.
diff --git a/elf/dl-load.c b/elf/dl-load.c
index b70ba5590a..126d6aab5c 100644
--- a/elf/dl-load.c
+++ b/elf/dl-load.c
@@ -139,7 +139,7 @@ _dl_map_object (struct link_map *loader, const char *name)
       if (fd == -1 && ! _dl_secure)
 	trypath (getenv ("LD_LIBRARY_PATH"));
       if (fd == -1)
-	trypath ("/lib:/usr/lib");
+	trypath (DEFAULT_RPATH);
     }
   else
     {
diff --git a/elf/dl-lookup.c b/elf/dl-lookup.c
index 62802ddea7..cb337d47cd 100644
--- a/elf/dl-lookup.c
+++ b/elf/dl-lookup.c
@@ -22,7 +22,7 @@ Cambridge, MA 02139, USA.  */
 #include <link.h>
 #include <assert.h>
 
-/* Search loaded objects' symbol tables for a definition of 
+/* Search loaded objects' symbol tables for a definition of
    the symbol UNDEF_NAME.  If NOSELF is nonzero, then *REF
    cannot satisfy the reference itself; some different binding
    must be found.  */
@@ -100,7 +100,7 @@ _dl_lookup_symbol (const char *undef_name, const Elf32_Sym **ref,
 	}
     }
 
-  if (weak_value.s == NULL)
+  if (weak_value.s == NULL && ELF32_ST_BIND ((*ref)->st_info) != STB_WEAK)
     {
       const char msg[] = "undefined symbol: ";
       char buf[sizeof msg + strlen (undef_name)];