Enable simple objcopy test for cross builds

[Alan Modra]

This enables an objcopy test when building a cross binutils.  I've
also fixed the return status of the tests so that runtest doesn't
return an error when we can compile but not run executables.
Previously, when building cross binutils you'd pass the binutils
tests if you didn't have a full cross-toolchain installed on your
build machine, but after installing the complete toolchain the objcopy
tests would fail.

	* binutils-all/objcopy.exp (copy_setup): Don't perror, use send_log.
	(copy_executable): Return early if test2 is blank.
	Return unsupported rather than unresolved if we can't run
	executables.  Do test1 if we can compile.

Index: binutils/testsuite/binutils-all/objcopy.exp
===================================================================
RCS file: /cvs/src/src/binutils/testsuite/binutils-all/objcopy.exp,v
retrieving revision 1.43
diff -u -p -r1.43 objcopy.exp
--- binutils/testsuite/binutils-all/objcopy.exp	24 Apr 2007 10:56:58 -0000	1.43
+++ binutils/testsuite/binutils-all/objcopy.exp	2 May 2007 10:08:18 -0000
@@ -516,7 +516,7 @@ proc copy_setup { } {
     set status [lindex $result 0]
 
     if { $status != "pass"  } {
-	perror "unresolved setup, status = $status"
+	send_log "cannot run executable, status = ${status}\n"
 	return 3
     }
 
@@ -541,6 +541,9 @@ proc copy_executable { prog flags test1 
 
     if ![string match "" $exec_output] {
 	fail $test1
+	if [string match "" $test2] {
+	    return
+	}
 	fail $test2
 	return
     }
@@ -582,6 +585,10 @@ proc copy_executable { prog flags test1 
 	fail $test1
     }
 
+    if [string match "" $test2] {
+	return
+    }
+
     set output [remote_load target tmpdir/copyprog]
     set status [lindex $output 0]
     if { $status != "pass" } {
@@ -693,10 +700,10 @@ switch [copy_setup] {
 	untested $test4
     }
     "3" {
-	unresolved $test1
-	unresolved $test2
-	unresolved $test3
-	unresolved $test4
+	copy_executable "$OBJCOPY" "$OBJCOPYFLAGS" "$test1" ""
+	unsupported $test2
+	unsupported $test3
+	unsupported $test4
     }
     "0" {
 	copy_executable "$OBJCOPY" "$OBJCOPYFLAGS" "$test1" "$test2"

-- 
Alan Modra
IBM OzLabs - Linux Technology Centre