Do not silently continue if config.{build,host,gcc} fails

If config.{build,host,gcc} fails, configure currently silently
continues.  This then makes it much harder than necessary to notice
you made a stupid pasto in config.gcc (and where exactly).


	* configure.ac: If any of the config.* scripts fail, exit 1.
	* configure: Regenerate.

From-SVN: r250507

gcc/ChangeLog

+2017-07-25  Segher Boessenkool  <segher@kernel.crashing.org>
+
+	* configure.ac: If any of the config.* scripts fail, exit 1.
+	* configure: Regenerate.
+
 2017-07-25  Richard Biener  <rguenther@suse.de>
 
 	PR middle-end/81546

gcc/configure

@@ -11489,15 +11489,15 @@ fi
 # --------------------------------------------------------
 
 # Collect build-machine-specific information.
-. ${srcdir}/config.build
+. ${srcdir}/config.build || exit 1
 
 # Collect host-machine-specific information.
-. ${srcdir}/config.host
+. ${srcdir}/config.host || exit 1
 
 target_gtfiles=
 
 # Collect target-machine-specific information.
-. ${srcdir}/config.gcc
+. ${srcdir}/config.gcc || exit 1
 
 extra_objs="${host_extra_objs} ${extra_objs}"
 extra_gcc_objs="${host_extra_gcc_objs} ${extra_gcc_objs}"

gcc/configure.ac

@@ -1442,15 +1442,15 @@ fi
 # --------------------------------------------------------
 
 # Collect build-machine-specific information.
-. ${srcdir}/config.build
+. ${srcdir}/config.build || exit 1
 
 # Collect host-machine-specific information.
-. ${srcdir}/config.host
+. ${srcdir}/config.host || exit 1
 
 target_gtfiles=
 
 # Collect target-machine-specific information.
-. ${srcdir}/config.gcc
+. ${srcdir}/config.gcc || exit 1
 
 extra_objs="${host_extra_objs} ${extra_objs}"
 extra_gcc_objs="${host_extra_gcc_objs} ${extra_gcc_objs}"