sflow: Avoid "unused parameter" warnings from GCC 4.4.

With GCC -Wno-unused by itself isn't enough to avoid "unused parameter"
warnings, since we also use -Wunused-parameter.  We also need to check for
and use -Wno-unused-parameter.

diff --git a/configure.ac b/configure.ac
index dad2fb9..04ffe6e 100644 (file)
--- a/configure.ac
+++ b/configure.ac
@@ -86,6 +86,7 @@ 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])
 
 AC_ARG_VAR(KARCH, [Kernel Architecture String])
 AC_SUBST(KARCH)

diff --git a/lib/automake.mk b/lib/automake.mk
index 0588eea..49f4e2c 100644 (file)
--- a/lib/automake.mk
+++ b/lib/automake.mk
@@ -168,6 +168,9 @@ lib_libsflow_a_CFLAGS = $(AM_CFLAGS)
 if HAVE_WNO_UNUSED
 lib_libsflow_a_CFLAGS += -Wno-unused
 endif
+if HAVE_WNO_UNUSED_PARAMETER
+lib_libsflow_a_CFLAGS += -Wno-unused-parameter
+endif
 
 if HAVE_NETLINK
 lib_libopenvswitch_a_SOURCES += \