build: warn on unused parameter

To improve code quality we want to turn on as many warnings as we can in
the DPDK code, so turn on the "unused-parameter" warning in meson builds to
match that of the make builds. To ensure correct compilation, disable the
warning selectively for driver base code that otherwise would have issues.

Signed-off-by: Bruce Richardson <bruce.richardson@intel.com>
Acked-by: Luca Boccassi <bluca@debian.org>

config/meson.build

@@ -143,6 +143,7 @@ add_project_arguments('-include', 'rte_config.h', language: 'c')
 
 # enable extra warnings and disable any unwanted warnings
 warning_flags = [
+	'-Wunused-parameter',
 	'-Wsign-compare',
 	'-Wcast-qual',
 	'-Wno-address-of-packed-member'

drivers/net/i40e/base/meson.build

@@ -13,7 +13,8 @@ sources = [
 
 error_cflags = ['-Wno-sign-compare', '-Wno-unused-value',
 		'-Wno-format', '-Wno-error=format-security',
-		'-Wno-strict-aliasing', '-Wno-unused-but-set-variable'
+		'-Wno-strict-aliasing', '-Wno-unused-but-set-variable',
+		'-Wno-unused-parameter',
 ]
 c_args = cflags
 if allow_experimental_apis

drivers/net/ice/base/meson.build

@@ -16,6 +16,7 @@ sources = [
 error_cflags = ['-Wno-unused-value',
 		'-Wno-unused-but-set-variable',
 		'-Wno-unused-variable',
+		'-Wno-unused-parameter',
 ]
 c_args = cflags
 

drivers/net/ixgbe/base/meson.build

@@ -18,7 +18,9 @@ sources = [
 ]
 
 error_cflags = ['-Wno-unused-value',
-		'-Wno-unused-but-set-variable']
+		'-Wno-unused-but-set-variable',
+		'-Wno-unused-parameter',
+		]
 c_args = cflags
 if allow_experimental_apis
 	c_args += '-DALLOW_EXPERIMENTAL_API'