testsuite_hooks.h: Guard against a missing unlink().

2003-07-06  Phil Edwards  <pme@gcc.gnu.org>

	* testsuite/testsuite_hooks.h:  Guard against a missing unlink().

From-SVN: r68993

libstdc++-v3/ChangeLog

+2003-07-06  Phil Edwards  <pme@gcc.gnu.org>
+
+	* testsuite/testsuite_hooks.h:  Guard against a missing unlink().
+
 2003-07-05  Phil Edwards  <pme@gcc.gnu.org>
 
 	* acinclude.m4 (GLIBCXX_ENABLE_SYMVERS):  Bump minimal version

libstdc++-v3/testsuite/testsuite_hooks.h

@@ -69,6 +69,11 @@
 #endif
 #include <list>
 #include <locale>
+#ifdef _GLIBCXX_HAVE_UNISTD_H
+# include <unistd.h>
+#else
+# define unlink(x)
+#endif
 
 namespace __gnu_cxx_test
 {