trace-cmd make-trace-cmd.sh: Allow overriding of CFLAGS

Instead of hard coding CFLAGS to be "-g -Wall", have that be the default,
but if the user adds their own CFLAGS, it will override that.

Link: https://lore.kernel.org/linux-trace-devel/20220711152356.65790b1b@gandalf.local.home

Signed-off-by: Steven Rostedt (Google) <rostedt@goodmis.org>
1 file changed