meson: warn on unused parameters like on autotools

this mirrors the behaviour of autotools.

diff --git a/meson.build b/meson.build
index a93ac5a..a814d9d 100644 (file)
--- a/meson.build
+++ b/meson.build
@@ -80,6 +80,7 @@ dev_cflags = []
 dev_cflags_try = [
   '-fvisibility=hidden',
   '-Wall',
+  '-Wunused-parameter',
   '-Wsign-compare',
   '-Wno-missing-field-initializers',
 ]