fix building for systems w/out ldso support

If an arch (like alpha and others) have no ldso support at all, then there
is no point in attempting to walk loaded modules in the dl-* helper funcs.

Signed-off-by: Mike Frysinger <vapier@gentoo.org>

ldso/include/ldso.h

@@ -33,6 +33,7 @@
 /* Pull in the arch specific page size */
 #include <bits/uClibc_page.h>
 /* Pull in the ldso syscalls and string functions */
+#ifndef __ARCH_HAS_NO_SHARED__
 #include <dl-syscall.h>
 #include <dl-string.h>
 /* Now the ldso specific headers */
@@ -133,4 +134,8 @@ extern void _dl_get_ready_to_run(struct elf_resolve *tpnt, DL_LOADADDR_TYPE load
 #include <dl-inlines.h>
 #endif
 
+#else /* __ARCH_HAS_NO_SHARED__ */
+#include <dl-defs.h>
+#endif
+
 #endif /* _LDSO_H_ */

libc/misc/elf/dl-iterate-phdr.c

@@ -24,9 +24,10 @@ hidden_proto(__dl_iterate_phdr)
 int
 __dl_iterate_phdr (int (*callback) (struct dl_phdr_info *info, size_t size, void *data), void *data)
 {
+	int ret = 0;
+#ifndef __ARCH_HAS_NO_SHARED__
 	struct elf_resolve *l;
 	struct dl_phdr_info info;
-	int ret = 0;
 
 	for (l = _dl_loaded_modules; l != NULL; l = l->next) {
 		info.dlpi_addr = l->loadaddr;
@@ -37,6 +38,7 @@ __dl_iterate_phdr (int (*callback) (struct dl_phdr_info *info, size_t size, void
 		if (ret)
 			break;
 	}
+#endif
 	return ret;
 }
 hidden_def (__dl_iterate_phdr)