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Alternative compiling for debug/optimized code?

From: Daniel Kraft
Subject: Alternative compiling for debug/optimized code?
Date: Thu, 8 Dec 2005 10:24:26 +0100


Prior to using the GNU build system (especially automake) I used my own plain
Makefiles which set compiler flags like -g, -O2
or -Ds enabling assertions depending on a variable set on commandline. So it was
possible to compile debugging/optimized code just by changing the make-command:

make mode=opt
make mode=debug

Using automake the default compiler flags seem to be -g -O2; but most of the
time I don't need debug code, so I want to disable that -g - option. But by
lines like:


I just get that -O2 appended to the default -g -O2; so I can't disable -g this
way. What must be done to resolve this issue properly?
And it is possible to do something similiar to the alternative compiling
described above - i.e. to have a simple way for switching opt/debug mode, maybe
without having to reconfigure?

Thank you very much!
Daniel Kraft

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