Adam Tkac wrote:
> You can include those lines to jpeg/configure.ac:
>
> CFLAGS="$CFLAGS -O3"
> CXXFLAGS="$CXXFLAGS -O3"
>
>   
No, that just adds to the CFLAGS/CXXFLAGS defined implicitly by
autoconf.  Thus, I end up with 'cc -O2 -O3'.

What I want is a way to change the implicit -O2 C flag based on whether
or not a particular build condition is true.


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