MIPS/LD/testsuite: mips-elf-flags: Use `remote_exec' to call `readelf'

For ELF file header flag verification done in `good_combination' in the
`mips-elf-flags.exp' test script the version of `readelf' built along
with the rest of binutils has to be used rather than any such executable
already present on the build system, so that flags recognized by the
tool match those supported by LD being tested.  Use `remote_exec' as
elsewhere in the LD test framework and also with GAS and LD used here,
getting and arranging for extra reporting of `readelf' calls included in
test logs on this occasion as well.

	ld/
	* testsuite/ld-mips-elf/mips-elf-flags.exp (good_combination):
	Use `remote_exec' to call `readelf'.  Log the command issued.

1 files changed, 7 insertions, 2 deletions

diff --git a/ld/testsuite/ld-mips-elf/mips-elf-flags.exp b/ld/testsuite/ld-mips-elf/mips-elf-flags.exp
index cea2774..9461cb6 100644
--- a/ld/testsuite/ld-mips-elf/mips-elf-flags.exp
+++ b/ld/testsuite/ld-mips-elf/mips-elf-flags.exp
@@ -70,8 +70,13 @@ proc good_combination {arglist flags} {
     } elseif {![ld_link "$ld $ldemul" $finalobj "-r $objs"]} {
 	fail $testname
     } else {
-	catch "exec $READELF -h $finalobj" output
-	if {![regexp "Flags: *(\[^\n\]*)" $output full gotflags]} {
+	set cmd "$READELF -h $finalobj"
+	send_log "$cmd\n"
+	set cmdret [remote_exec host [concat sh -c [list "$cmd 2>&1"]]]
+	set output [lindex $cmdret 1]
+	set cmdret [lindex $cmdret 0]
+	if {$cmdret != 0 \
+	    || ![regexp "Flags: *(\[^\n\r\]*)" $output full gotflags]} {
 	    unresolved $testname
 	} else {
 	    set failed 0