I posted a bug about that along with a suggestion, despite sometimes I do not
explain myself correctly (I am very sorry): bug #471590
Many packages are bundling its own libraries rather than link against system
ones, and there is a bug tracker for that (bug #251464)
As I saw in many ebuilds, it is fixed by putting a new system-{$LIBRARY}
IUSE in the affected ebuilds to enable/disable linking with external or
bundled library, but there are plenty of libraries and packages out there to
pullute the use's config files with several combinations of that USE flags.
What I propose here, is to simplify the process a lot by handling those
system-{$LIBRARY} USE flags internally with a very simple configuration for
the user, rather than expose the USE flag directly and forcing user to save
all combinations for that purpose.
This request/idea is inspired on how the x86_ABI is handled:
As a comparison only, most packages have 32 and 64, and you don't have to
handle them via USE flag per-package, rather, you have an option in make.conf
to set it all of them automatically.
What I propose for example, is a very good and simple approach: to have an
option in portage's make.conf, something like that (the name may change):
1.- USE_SYSTEM_LIBRARIES=cairo sqlite XXX
2.- USE_SYSTEM_LIBRARIES=* -cairo
3.- USE_SYSTEM_LIBRARIES=*
Case explanation:
1.- Will trigger automatically (and enable) USE flags: system-cairo, system-
sqlite and system-XXX
2.- Will trigger all system-* related USE except system-cairo which will be
disabled
3.- Will trigger all system-* related USE variables with no exception.
I honestly think, it is a best aproach to resolve the library bundling, along
with a correct fix for affected ebuilds.
What do you think?
Thanks for taking your time to read this suggestion.
David Carlos Manuelda.
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