crossgcc: check for more tools that we require

Change-Id: Ie002c69ab23cfc961b77771c4f2c20e5ae6bea60
Signed-off-by: Patrick Georgi <patrick@georgi-clan.de>
Reviewed-on: http://review.coreboot.org/8633
Tested-by: build bot (Jenkins)
Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net>
Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
diff --git a/util/crossgcc/buildgcc b/util/crossgcc/buildgcc
index 07cc1f0..bdbbe26 100755
--- a/util/crossgcc/buildgcc
+++ b/util/crossgcc/buildgcc
@@ -108,7 +108,7 @@
 	fi
 	for i in "$1" "g$1" "gnu$1"; do
 		if test -x "`which $i 2>/dev/null`"; then
-			if test `$i --version 2>/dev/null |grep -c "$search"` \
+			if test `$i --version 2>&1 |grep -c "$search"` \
 			    -gt 0; then
 				echo $i
 				return
@@ -138,7 +138,9 @@
 searchtool bison > /dev/null
 searchtool flex flex > /dev/null
 searchtool g++ "Free Software Foundation" nofail > /dev/null || \
-searchtool clang "clang version"
+searchtool clang "clang version" > /dev/null
+searchtool wget > /dev/null
+searchtool bzip2 "bzip2," > /dev/null
 
 cleanup()
 {