gcc/
PR testsuite/38526
* Makefile.in (site.exp): Rename TEST_GCC_EXEC_PREFIX and comment
its use.
(check-%): Don't set GCC_EXEC_PREFIX when invoking runtest.
(check-parallel-%): Ditto.
(check-consistency): Ditto.
testsuite/
PR testsuite/38526
* lib/target-libpath.exp (set_ld_library_path_env_vars): Save
existing GCC_EXEC_PREFIX, set to TEST_GCC_EXEC_PREFIX if that
is defined.
(restore_ld_library_path_env_vars): Restore GCC_EXEC_PREFIX to
its original value, or unset if it was not defined.
* gcc.dg/compat/struct-layout-1.exp: Use set/restore library
path procs around use of HOSTCC.
* g++.dg/compat/struct-layout-1.exp: Ditto.
* objc.dg/gnu-encoding/gnu-encoding.exp: Ditto.
From-SVN: r144908
