configure: Remove -Wno-override-init, add -Wextra to compile options.

The build is clean against -Wextra at least with GCC 4.4.

(-Wextra includes -Woverride-init.)

Suggested-by: Alex Wang <alexw@nicira.com>
Signed-off-by: Ben Pfaff <blp@nicira.com>
Acked-by: Ethan Jackson <ethan@nicira.com>

diff --git a/configure.ac b/configure.ac
index 2f3e474..170a852 100644 (file)
--- a/configure.ac
+++ b/configure.ac
@@ -89,6 +89,7 @@ OVS_CHECK_ATOMIC_ALWAYS_LOCK_FREE(8)
 OVS_CHECK_POSIX_AIO
 
 OVS_ENABLE_OPTION([-Wall])
+OVS_ENABLE_OPTION([-Wextra])
 OVS_ENABLE_OPTION([-Wno-sign-compare])
 OVS_ENABLE_OPTION([-Wpointer-arith])
 OVS_ENABLE_OPTION([-Wdeclaration-after-statement])
@@ -102,7 +103,6 @@ OVS_ENABLE_OPTION([-Wstrict-prototypes])
 OVS_ENABLE_OPTION([-Wold-style-definition])
 OVS_ENABLE_OPTION([-Wmissing-prototypes])
 OVS_ENABLE_OPTION([-Wmissing-field-initializers])
-OVS_ENABLE_OPTION([-Wno-override-init])
 OVS_CONDITIONAL_CC_OPTION([-Wno-unused], [HAVE_WNO_UNUSED])
 OVS_CONDITIONAL_CC_OPTION([-Wno-unused-parameter], [HAVE_WNO_UNUSED_PARAMETER])
 OVS_ENABLE_WERROR