(os handling): Recognize `linux' as a valid os.

From-SVN: r2282

diff --git a/gcc/config.sub b/gcc/config.sub
index f640f94..9eaa499 100755 (executable)
--- a/gcc/config.sub
+++ b/gcc/config.sub
@@ -473,7 +473,8 @@ case $os in
              | -vms* | -sco* | -esix* | -isc* | -aix* | -sunos* | -hpux* \
              | -unos* | -osf* | -luna* | -dgux* | -solari* | -sym* \
              | -amigados* | -msdos* | -newsos* | -unicos* | -aos* \
-             | -nindy* | -vxworks* | -ebmon* | -hds* | -m88kbcs* | -riscos*)
+             | -nindy* | -vxworks* | -ebmon* | -hds* | -m88kbcs* \
+             | -riscos* | -linux* )
                ;;
        -osfrose*)
                os=-osfrose