configure: add -Wshadow option

Start exposing variable-shadowing warnings in all builds.

Signed-off-by: Mark Stapp <mjs@cisco.com>

diff --git a/configure.ac b/configure.ac
index f9f32865630b022080dea27ad0d486c3975d8bbd..00a56205292c4016f9acc2b951fea3c3cb4e5df7 100644 (file)
--- a/configure.ac
+++ b/configure.ac
@@ -467,6 +467,7 @@ AC_C_FLAG([-Wbad-function-cast])
 AC_C_FLAG([-Wwrite-strings])
 AC_C_FLAG([-Wundef])
 AC_C_FLAG([-Wimplicit-fallthrough])
+AC_C_FLAG([-Wshadow])
 if test "$enable_gcc_ultra_verbose" = "yes" ; then
   AC_C_FLAG([-Wcast-qual])
   AC_C_FLAG([-Wmissing-noreturn])
@@ -474,7 +475,6 @@ if test "$enable_gcc_ultra_verbose" = "yes" ; then
   AC_C_FLAG([-Wunreachable-code])
   AC_C_FLAG([-Wpacked])
   AC_C_FLAG([-Wpadded])
-  AC_C_FLAG([-Wshadow])
 else
   AC_C_FLAG([-Wno-unused-result])
 fi