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On Wed, 9 Feb 2005 20:00:17 -0800 (PST)
"Jeremy C. Reed" <reed@reedmedia.net> wrote:

> What is the correct nbmake or pkgsrc way to add -O to CFLAGS only if no
> optimization (like -O2) is not defined?
> 
> I guess CCOPTS, CPPFLAGS and CFLAGS would need to be checked and then if
> not set then add -O to CFLAGS.
> 
> (I need this for libdv which requires at least -O. No problem on NetBSD
> because of /usr/share/mk/sys.mk.)

Something like:

.if empty(CFLAGS:M-O*)
CFLAGS+=	-O
.endif 

is enough?

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