Add test for linking against most static libraries

ChangeLog

@@ -1,3 +1,9 @@
+2016-10-28  Florian Weimer  <fweimer@redhat.com>
+
+	* elf/tst-linkall-static.c: New file.
+	* elf/Makefile (tests-static): Add tst-linkall-static.
+	(tst-linkall-static): Link against static libraries.
+
 2016-10-27  Florian Weimer  <fweimer@redhat.com>
 
 	* malloc/malloc.c (sysmalloc): Initialize previous size field of

elf/Makefile

@@ -122,7 +122,8 @@ tests = tst-tls1 tst-tls2 tst-tls9 tst-leaks1 \
 tests-static = tst-tls1-static tst-tls2-static tst-stackguard1-static \
 	       tst-leaks1-static tst-array1-static tst-array5-static \
 	       tst-ptrguard1-static tst-dl-iter-static \
-	       tst-tlsalign-static tst-tlsalign-extern-static
+	       tst-tlsalign-static tst-tlsalign-extern-static \
+	       tst-linkall-static
 ifeq (yes,$(build-shared))
 tests-static += tst-tls9-static
 tst-tls9-static-ENV = \
@@ -1278,3 +1279,13 @@ $(objpfx)tst-ldconfig-X.out : tst-ldconfig-X.sh $(objpfx)ldconfig
 	$(evaluate-test)
 
 $(objpfx)tst-dlsym-error: $(libdl)
+
+$(objpfx)tst-linkall-static: \
+  $(common-objpfx)math/libm.a \
+  $(common-objpfx)crypt/libcrypt.a \
+  $(common-objpfx)resolv/libresolv.a \
+  $(common-objpfx)dlfcn/libdl.a \
+  $(common-objpfx)login/libutil.a \
+  $(common-objpfx)rt/librt.a \
+  $(common-objpfx)resolv/libanl.a \
+  $(static-thread-library) \

elf/tst-linkall-static.c

@@ -0,0 +1,45 @@
+/* Test static linking against multiple libraries, to find symbol conflicts.
+   Copyright (C) 2016 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public License as
+   published by the Free Software Foundation; either version 2.1 of the
+   License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; see the file COPYING.LIB.  If
+   not, see <http://www.gnu.org/licenses/>.  */
+
+#include <math.h>
+#include <pthread.h>
+#include <crypt.h>
+#include <resolv.h>
+#include <dlfcn.h>
+#include <utmp.h>
+#include <aio.h>
+#include <netdb.h>
+
+/* These references force linking the executable against central
+   functions in the static libraries, pulling significant parts of
+   each library into the link.  */
+void *references[] =
+  {
+    &pow,                       /* libm */
+    &pthread_create,            /* libpthread */
+    &crypt,                     /* libcrypt */
+    &res_send,                  /* libresolv */
+    &dlopen,                    /* libdl */
+    &login,                     /* libutil */
+    &aio_init,                  /* librt */
+    &getaddrinfo_a,             /* libanl */
+  };
+
+/* This is a link-time test.  There is nothing to run here.  */
+#define TEST_FUNCTION 0
+#include "../test-skeleton.c"