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Re: cygport debug junk


On 2012-07-18 17:07, Ken Brown wrote:
On 7/18/2012 4:57 PM, Andrew Schulman wrote:
My cygport is 0.10.11-1.  I haven't run cygport in a while, and now
I'm trying
to compile a new package.  When I do, by default it seems that I get

CC = "gcc -c -ggdb -O2 -pipe
-fdebug-prefix-map=/home/ASchulma/dev/cygwin/wbox/wbox-5-1/build=/usr/src/debug/wbox-5-1\

-fdebug-prefix-map=/home/ASchulma/dev/cygwin/wbox/wbox-5-1/src/wbox-5=/usr/src/debug/wbox-5-1"

and the install target then creates a bunch of (IMO) debug junk in
/usr/lib/debug and /usr/src/debug.

Debuginfo is not "junk". Like most Linux binary distros, these files are automatically packed into a ${PN}-debuginfo package and excluded from other (sub)packages without further intervention by the maintainer. Users can then install gdb and these debuginfo packages to debug software in place, without having to install BRs and rebuild packages.


Is this a change that's been made recently in cygport?

http://cygwin.com/ml/cygwin-announce/2012-07/msg00000.html


Can it be easily turned off?

Yes, it can, as described in the manual, but the only time you should is if you are trying to debug a package in its build-tree (e.g. noinst test/example apps), and then only temporarily, e.g.:


RESTRICT=debuginfo cygport foo-1.2.3-1 build

I grepped through /usr/share/cygport for that, and found that
compilers.cygclass uses it, but I don't include that in my cygport script
(below).

You mean compilers.cygpart; .cygpart files are just the main cygport script functions broken up into manageable sections, like .c files which are compiled into an executable. .cygclass files are optional "modules" which are imported with inherit().


It's been discussed quite a bit on cygwin-apps.  See, for instance, the
thread starting at
http://cygwin.com/ml/cygwin-apps/2012-06/msg00071.html and continuing
into July.  If you don't want to provide a debuginfo package, put
"_CYGPORT_RESTRICT_debuginfo_=1" in your .cygport file.

Bzzzt. Don't use internal structures. If it's not documented in the manual, you shouldn't be using it in your .cygport, and anything starting with an underscore is purely internal.


But again, while I can't state this as policy, you really shouldn't be disabling debuginfo on a widespread or permanent basis. It's a feature and it's there for a reason.


Yaakov



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