configure.ac: Add AC_USE_SYSTEM_EXTENSIONS.

	* configure.ac: Add AC_USE_SYSTEM_EXTENSIONS.
	* configure: Regenerate.
	* config.h.in: Ditto.

From-SVN: r225302

lto-plugin/ChangeLog

+2015-07-02  Uros Bizjak  <ubizjak@gmail.com>
+
+	* configure.ac: Add AC_USE_SYSTEM_EXTENSIONS.
+	* configure: Regenerate.
+	* config.h.in: Ditto.
+
 2015-05-13  Michael Haubenwallner  <michael.haubenwallner@ssi-schaefer.com>
 
 	* Makefile.am: Drop 'by automake version' from top-level comment.

lto-plugin/config.h.in

@@ -61,6 +61,28 @@
 /* Define to 1 if you have the ANSI C header files. */
 #undef STDC_HEADERS
 
+/* Enable extensions on AIX 3, Interix.  */
+#ifndef _ALL_SOURCE
+# undef _ALL_SOURCE
+#endif
+/* Enable GNU extensions on systems that have them.  */
+#ifndef _GNU_SOURCE
+# undef _GNU_SOURCE
+#endif
+/* Enable threading extensions on Solaris.  */
+#ifndef _POSIX_PTHREAD_SEMANTICS
+# undef _POSIX_PTHREAD_SEMANTICS
+#endif
+/* Enable extensions on HP NonStop.  */
+#ifndef _TANDEM_SOURCE
+# undef _TANDEM_SOURCE
+#endif
+/* Enable general extensions on Solaris.  */
+#ifndef __EXTENSIONS__
+# undef __EXTENSIONS__
+#endif
+
+
 /* Version number of package */
 #undef VERSION
 
@@ -70,6 +92,16 @@
 /* Define for large files, on AIX-style hosts. */
 #undef _LARGE_FILES
 
+/* Define to 1 if on MINIX. */
+#undef _MINIX
+
+/* Define to 2 if the system does not provide POSIX.1 features except with
+   this defined. */
+#undef _POSIX_1_SOURCE
+
+/* Define to 1 if you need to in order for `stat' and other things to work. */
+#undef _POSIX_SOURCE
+
 /* Define for Solaris 2.5.1 so the uint64_t typedef from <sys/synch.h>,
    <pthread.h>, or <semaphore.h> is not used. If the typedef were allowed, the
    #define below would cause a syntax error. */

lto-plugin/configure.ac

@@ -9,6 +9,7 @@ AC_ARG_WITH(libiberty,
     [specify the directory where to find libiberty [../libiberty]])],
   [], with_libiberty=../libiberty)
 AC_SUBST(with_libiberty)
+AC_USE_SYSTEM_EXTENSIONS
 AC_PROG_CC
 AC_SYS_LARGEFILE
 ACX_PROG_CC_WARNING_OPTS([-Wall], [ac_lto_plugin_warn_cflags])