On Mon, 17 Aug 2009 15:34:53 -0400, Joey Hess wrote: Coming back to this, triggered by #596429:
> Now, back to the specific case of perl packages. In MakeMaker, OPTIMIZE
> apparently defaults to -O (according to its docs, but I have not found
> it in the code..).
My impression is that the docs are wrong.
My observations see quite a few "-O2 -g"; and looking at the code my
guess is that EUMM (or even EUMM::Config) actually uses
perl's %Config.
$ perl -MConfig -e 'print $Config{optimize}'
-O2 -g
I'm sure Niko will correct my if I'm way off :)
> Will changing that default to
> dpkg-buildpackage's default of -O2 break anything? How can we tell? (How
> were the dpkg maintainer's able to tell when they started setting CFLAGS
> for everything?)
If my assumptions are correct then we are building EUMM-using
packages with "-O2 -g" since $whatever_time without any widespread
problems.
Therefore I guess having debhelper honour CFLAGS and friends via
passing them as OPTIMIZE would be useful.
> I haven't been able to figure out how build=optimize=-02 works in
> Module::Build, or what the default is.
Next guesses:
* Module::Build::API also mentions Config.pm
* $ perl -MModule::Build -e '$mb = new Module::Build(dist_name => Foo::Bar,
dist_version => 1.2.3.4); print $mb->config("optimize")'
...
-O2 -g
Cheers,
gregor
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