configure: enable -Wshadow diagnostic

The codebase should compile cleanly with this flag, enable it by
default.

Change-Id: Ia9581845aec079347616fccd554d7199d012c2f1
Signed-off-by: Simon Marchi <simon.marchi@efficios.com>
Signed-off-by: Jérémie Galarneau <jeremie.galarneau@efficios.com>

diff --git a/configure.ac b/configure.ac
index 04f9cef4cf1e66f7cd202d48e2ef6aa58c008491..69914737241131baf8dd15d9d9d45e71d2a344c9 100644 (file)
--- a/configure.ac
+++ b/configure.ac
@@ -45,6 +45,7 @@ AX_APPEND_COMPILE_FLAGS([ dnl
                -Wmissing-parameter-type dnl
                -Wold-style-definition dnl
                -Wstrict-prototypes dnl
+               -Wshadow dnl
        ],
        [WARN_CFLAGS],
        [-Werror])