On 2/24/2009 9:06 AM, Bruce Simpson wrote:
Hi all,
[1] revdep-rebuild has very similar semantics to what I'm looking for,
as it will navigate the dependency graph for all packages installed on
the system, and rebuild packages where dependent libraries have changed.
To do the same with portupgrade alone, I need to know which port(s)
contain shared libraries, and tell it to go off and rebuild these
*specific* packages if things change.
I don't think revdep-rebuild works as cleanly as you think.
Technically, revdep-rebuild only locates packages that are *already
broken* due to missing shared libraries, and rebuilds them.
What revdep-rebuild does is literally run ldd on every executable file
in the search path, grep for either "not found" or a specific library
name, then assign each broken binary to a package name for portage to
rebuild. This is exactly what libchk also does, so the effect would be
the same. Specifically, revdep-rebuild also won't pick up missing
dlopen() libs and such.
The semantics you're talking about sounds like the new @preserved-libs
set that's in the upcoming portage, but in order for that to work it has
to be maintained at the time of library update: as a shared lib is moved
into the compat folder, record any packages that depend on the
previously installed package into a set for later rebuilding.
--K
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