Gentoo Archives: gentoo-dev

From: Alexis Ballier <aballier@g.o>
To: gentoo-dev@l.g.o
Subject: [gentoo-dev] static builds, static-libs useflag and indirect dependencies
Date: Mon, 19 Apr 2010 17:51:09
Message-Id: 20100419181902.14775ee7@capa-portable
1 Hi all,
3 We used to install both shared and static libraries when both were
4 available; this was good and working. Now we have the static-libs
5 useflag to control when static libs are built and installed; this is
6 better: we save time & space.
8 The problem I want to raise here is about indirect dependencies with
9 that new approach; let's take a real life example:
10 We have xz-utils and libarchive with the static-libs useflag. I want to
11 build freebsd-rescue statically against libarchive. What should I do?
12 So far we depend on libarchive[static-libs] because we cannot guess the
13 deps of libarchive. Thanks to pkg-config --static this is a non issue,
14 unless xz-utils is built without static-libs and we enabled lzma
15 support in libarchive! In this case, libarchive's static libs are
16 useless if I don't have xz-utils' ones because the former requires the
17 latter.
19 For me, the current way of adding static-libs to packages only for
20 controlling whether static libraries are installed is broken.
22 I'd like to see the following as a guideline/rule for the static-libs
23 useflag:
24 1) if a package has a static-libs useflag then its deps must be
25 cat/pkg[static-libs?] when applicable.
26 2) if one wants to add a static-libs useflag to a package then one must
27 check the reverse deps and make them happy with 1).
29 Needless to say I am volunteering to scan & fix the tree to see this
30 implemented quickly.
32 Another option would be to make the package manager automagically
33 handling the propagation of the static-libs useflag but that sounds
34 more a hack than anything else.
36 Alexis.