[PATCH] testsuite: Treat empty string in needs_status_wrapper as a false value

[Anton Kolesov <Anton.Kolesov@synopsys.com>]

GCC testsuite treats empty string in [target_info needs_status_wrapper] the
same way as "0" - as a false value. GDB testsuite on the other hand recognizes
only zero as false. This patch changes this to improve compatibilty of board files.

gdb/testsuite/ChangeLog:

2013-10-17  Anton Kolesov <Anton.Kolesov@synopsys.com>

    * lib/gdb.exp (gdb_compile, gdb_wrapper_init): Treat empty string in
    target_info needs_status_wrapper the same way as zero - as a false value.
---
 gdb/testsuite/lib/gdb.exp | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/gdb/testsuite/lib/gdb.exp b/gdb/testsuite/lib/gdb.exp
index 3efd539..f5f1555 100644
--- a/gdb/testsuite/lib/gdb.exp
+++ b/gdb/testsuite/lib/gdb.exp
@@ -2511,6 +2511,7 @@ proc gdb_wrapper_init { args } {
     if { $gdb_wrapper_initialized == 1 } { return; }
 
     if {[target_info exists needs_status_wrapper] && \
+	    [target_info needs_status_wrapper] != "" && \
 	    [target_info needs_status_wrapper] != "0"} {
 	set result [build_wrapper "testglue.o"]
 	if { $result != "" } {
@@ -2610,6 +2611,7 @@ proc gdb_compile {source dest type options} {
     if { $gdb_wrapper_initialized == 0 } { gdb_wrapper_init }
 
     if {[target_info exists needs_status_wrapper] && \
+	    [target_info needs_status_wrapper] != "" && \
 	    [target_info needs_status_wrapper] != "0" && \
 	    [info exists gdb_wrapper_file]} {
 	lappend options "libs=${gdb_wrapper_file}"
-- 
1.8.4.1