Let 'make check subdirs=string' succeed even when it's invoked

immediately after glibc has been built and before 'make check'
(or after 'make clean').

ChangeLog

@@ -1,3 +1,13 @@
+2015-09-28  Martin Sebor  <msebor@redhat.com>
+
+	[BZ #18969]
+	* string/Makefile (LOCALES): Define.
+	(gen-locales.mk): Include.
+	(test-strcasecmp.out, test-strncasecmp.out, tst-strxfrm.out)
+	(tst-strxfrm2.out): Add deppendency on $(gen-locales).
+	* string/tst-strxfrm2.c (do_test): Print the name of the locale
+	on setlocale failure.
+
 2015-09-26  Paul Pluzhnikov  <ppluzhnikov@google.com>
 
 	[BZ #18985]

NEWS

@@ -16,7 +16,7 @@ Version 2.23
   18618, 18647, 18661, 18674, 18675, 18681, 18757, 18778, 18781, 18787,
   18789, 18790, 18795, 18796, 18803, 18820, 18823, 18824, 18825, 18857,
   18863, 18870, 18872, 18873, 18875, 18887, 18921, 18951, 18952, 18956,
-  18961, 18966, 18967, 18970, 18977, 18980, 18981, 18985, 19003.
+  18961, 18966, 18967, 18969, 18970, 18977, 18980, 18981, 18985, 19003.
 
 * The obsolete header <regexp.h> has been removed.  Programs that require
   this header must be updated to use <regex.h> instead.

string/Makefile

@@ -75,4 +75,14 @@ ifeq ($(run-built-tests),yes)
 $(objpfx)tst-svc-cmp.out: tst-svc.expect $(objpfx)tst-svc.out
 	cmp $^ > $@; \
 	$(evaluate-test)
+
+LOCALES := de_DE.UTF-8 en_US.ISO-8859-1 en_US.UTF-8 \
+           tr_TR.ISO-8859-9 tr_TR.UTF-8
+include ../gen-locales.mk
+
+$(objpfx)test-strcasecmp.out: $(gen-locales)
+$(objpfx)test-strncasecmp.out: $(gen-locales)
+$(objpfx)tst-strxfrm.out: $(gen-locales)
+$(objpfx)tst-strxfrm2.out: $(gen-locales)
+
 endif

string/tst-strxfrm2.c

@@ -5,6 +5,8 @@
 static int
 do_test (void)
 {
+  static const char test_locale[] = "de_DE.UTF-8";
+
   int res = 0;
 
   char buf[20];
@@ -38,9 +40,9 @@ do_test (void)
       res = 1;
     }
 
-  if (setlocale (LC_ALL, "de_DE.UTF-8") == NULL)
+  if (setlocale (LC_ALL, test_locale) == NULL)
     {
-      puts ("setlocale failed");
+      printf ("cannot set locale \"%s\"\n", test_locale);
       res = 1;
     }
   else