question about CFLAGS, CXXFLAGS and DEBUG_FLAGS

[Alexander Best]

On Sat Dec 18 10, Peter Pentchev wrote:
> On Sat, Dec 18, 2010 at 08:09:37PM +0000, Alexander Best wrote:
> > hi there,
> > 
> > i just stumbled over these lines:
> > 
> > otaku% grep -n \${DEBUG_FLAGS} /usr/share/mk/bsd.prog.mk
> > 24:CFLAGS+=${DEBUG_FLAGS}
> > 25:CXXFLAGS+=${DEBUG_FLAGS}
> > 
> > is it really necessary to assign the debug flags to both CFLAGS *and* CXXFLAGS?
> 
> Uhm... yes, so they can be used in both C and C++ programs :)
> ...or are you making the mistake I've made too many times (and still
> make sometimes) of confusing CXXFLAGS with CPPFLAGS? :)

*hehehe* i don't think so.

i just saw a lot of these lines in buildworld:

clang++ -O2 -pipe -DNDEBUG -g -I/usr/obj/usr/subversion-src/tmp/legacy/usr/include -I/usr/subversion-src/gnu/usr.bin/gperf/../../../contrib/gperf/lib -I/usr/subversion-src/gnu/usr.bin/gperf -g -c /usr/subversion-src/gnu/usr.bin/gperf/../../../contrib/gperf/lib/hash.cc
clang++: warning: argument unused during compilation: '-g'
clang++: warning: argument unused during compilation: '-g'

as you can see -g gets specified twice, so i thought maybe adding -g to CFLAGS makes adding it to CXXFLAGS obsolete.

cheers.
alex

> 
> G'luck,
> Peter
> 
> -- 
> Peter Pentchev	roam at space.bg    roam at ringlet.net    roam at FreeBSD.org
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> Hey, out there - is it *you* reading me, or is it someone else?



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a13x