binutils: Use the newly built assembler and linker

Use the newly built assembler and linker in test_gnu_debuglink by passing
$gcc_gas_flag to target_compile.

	* testsuite/binutils-all/compress.exp (test_gnu_debuglink): Pass
	$gcc_gas_flag to target_compile.

binutils/ChangeLog

@@ -1,3 +1,8 @@
+2020-12-28  H.J. Lu  <hongjiu.lu@intel.com>
+
+	* testsuite/binutils-all/compress.exp (test_gnu_debuglink): Pass
+	$gcc_gas_flag to target_compile.
+
 2020-12-24  Alan Modra  <amodra@gmail.com>
 
 	* readelf.c (INT64_MIN): Define if not already defined.

binutils/testsuite/binutils-all/compress.exp

@@ -680,10 +680,19 @@ proc test_gnu_debuglink {} {
     global STRIP
     global OBJCOPY
     global OBJDUMP
+    global gcc_gas_flag
 
     set test "gnu-debuglink"
 
-    if { [target_compile $srcdir/$subdir/testprog.c tmpdir/testprog executable debug] != "" } {
+    # Use the newly built assembler and linker.
+    set flags debug
+    if { [istarget *-*-linux*]
+	 || [istarget *-*-gnu*] } {
+	foreach i $gcc_gas_flag {
+	    set flags "additional_flags=$i $flags"
+	}
+    }
+    if { [target_compile $srcdir/$subdir/testprog.c tmpdir/testprog executable $flags] != "" } {
 	unsupported "$test (build)"
 	return
     }