Date: Sun, 5 May 2013 22:14:36 +0200 From: Pawel Jakub Dawidek <pjd@FreeBSD.org> To: freebsd-arch@FreeBSD.org Subject: Building library that depends on another library. Message-ID: <20130505201436.GJ1374@garage.freebsd.pl>
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Hi.
I'm trying to connect two libraries to the build without hacks and it
doesn't work...
My two libraries are libcapsicum and libnv. libcapsicum depends on libnv.
I want to specify this dependency explicitely in libcapsicum's Makefile:
DPADD=3D ${LIBNV}
LDADD=3D -lnv
(LIBNV was added to bsd.libnames.mk, in case you wonder.)
=46rom conversation with kan@ (Alexander Kabaev) declaring dependency
directly in library's Makefile is required for symbol versioning to
work. It just sounds right, too.
If this is done, libcapsicum doesn't compile:
=3D=3D=3D> lib/libcapsicum (all)
cc [...]
cc [...]
building static capsicum library
ranlib libcapsicum.a
cc [...]
cc [...]
make: don't know how to make
/usr/home/pjd/obj/usr/home/pjd/p4/capsicum/tmp/usr/lib/libnv.a. Stop
*** [all] Error code 2
Stop in /usr/home/pjd/p4/capsicum/lib.
*** [lib__L] Error code 1
Note that when build fails libnv.{a,so} exist in <OBJDIR>/lib/libnv/,
but of course not in <OBJDIR>/tmp/usr/lib/.
It looks like to make such dependency work one HAS TO add libnv to
_prebuild_libs in src/Makefile.inc1, which seems wrong. Libraries
specified there from my understanding are just used by build tools:
LD_LIBRARY_PATH=3D${INSTALLTMP} # This is from src/Makefile.inc1.
My understanding was that all I need to do is to add my two libraries in
proper order to SUBDIR_ORDERED variable in src/lib/Makefile.
This means that currently SUBDIR_ORDERED is totally useless.
No matter how libraries are ordered there, to compile, they need
libraries they depend on in Makefile.inc1's _prebuild_libs.
I can of course just add libnv to _prebuild_libs and make it compile
twice for no reason, but maybe there is a better way or maybe I'm just
missing something?
--=20
Pawel Jakub Dawidek http://www.wheelsystems.com
FreeBSD committer http://www.FreeBSD.org
Am I Evil? Yes, I Am! http://mobter.com
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