build: respect CFLAGS when building warn_collector.l
We update common.mk to the latest (not really needed, by might as well).
Then we fix the lex building so it uses CFLAGS. This in turn triggers a
clang warning in the file which we fix by adding proper printf attributes.
TEST=`VERBOSE=1 emerge-x86-alex crash-reporter` showed flags used w/lex
Reviewed-by: Yunlian Jiang <email@example.com>
Reviewed-by: Ben Chan <firstname.lastname@example.org>
Commit-Queue: Mike Frysinger <email@example.com>
Tested-by: Mike Frysinger <firstname.lastname@example.org>
3 files changed