* Makefile.in (SYSROOT_CFLAGS_FOR_TARGET): Define from
	@SYSROOT_CFLAGS_FOR_TARGET@.
	* configure.ac (SYSROOT_CFLAGS_FOR_TARGET): Set from
	build-sysroot.
	* configure: Regenerate.
	(site.exp): Add definition of TEST_ALWAYS_FLAGS.
	Remove setting of GCC_UNDER_TEST.

testsuite/ChangeLog

	* lib/g++.exp (g++_init): Add $TEST_ALWAYS_FLAGS to
	ALWAYS_CXXFLAGS, if defined.
	* lib/gfortran.exp (gfortran_init): Add $TEST_ALWAYS_FLAGS to
	ALWAYS_GFORTRANFLAGS, if defined.
	* lib/go.exp (go_target_compile): Add $TEST_ALWAYS_FLAGS to
	ALWAYS_GOCFLAGS, if defined.
	* lib/obj-c++.exp (obj-c++_init): Add $TEST_ALWAYS_FLAGS to
	ALWAYS_OBJCXXFLAGS, if defined.
	* lib/gcc.exp (gcc_target_compile): Add $TEST_ALWAYS_FLAGS to
	additional_flags, if defined.
	* lib/gnat.exp (gnat_target_compile): Likewise.
	* lib/objc.exp (objc_target_compile): Likewise.
	* lib/target-supports-dg.exp (dg-add-options): Handle
	TEST_ALWAYS_FLAGS.

From-SVN: r178897