[Cbc] Static linking from own code in Linux

[Ted Ralphs]

I'm pretty sure this is a link order problem. If you modify the link order
to

-lCbcSolver -lCbc -lCgl -lOsiClp -lClpSolver -lClp -lOsi -lCoinUtils

I'm guessing the problem will go away. I had forgotten that I guess this
was only a problem with static libraries.

Ted

On Sun, Feb 21, 2016 at 7:07 PM, Gleb Belov <gleb.belov at monash.edu> wrote:

> Hi Ted,
>
> the linker does not really find any functions in the libraries, although
> it finds all the .a files. The relevant part of cmake's output is attached.
> Here are the contents of CBC's lib directory:
>
> bg at bg-vbox:/media/sf_SHARED/prj/libmzn/build$ ls $OSICBC_HOME/lib
> libCbc.a   libCbcSolver.a   libCgl.a   libClp.a   libClpSolver.a
> libCoinUtils.a   libOsi.a     libOsiCbc.la  libOsiClp.la
> libOsiCommonTests.la  pkgconfig
> libCbc.la  libCbcSolver.la  libCgl.la  libClp.la  libClpSolver.la
> libCoinUtils.la  libOsiCbc.a  libOsiClp.a   libOsiCommonTests.a  libOsi.la
>
> Looking for one of the functions missed, writeMpsNative, gives:
>
> bg at bg-vbox:/media/sf_SHARED/prj/libmzn/build$ grep writeMpsNative
> $OSICBC_HOME/lib/*
> Binary file /home/bg/Documents/prj/coin-Cbc-2.9/lib/libCbc.a matches
> Binary file /home/bg/Documents/prj/coin-Cbc-2.9/lib/libCbcSolver.a matches
> Binary file /home/bg/Documents/prj/coin-Cbc-2.9/lib/libOsi.a matches
> Binary file /home/bg/Documents/prj/coin-Cbc-2.9/lib/libOsiCbc.a matches
> Binary file /home/bg/Documents/prj/coin-Cbc-2.9/lib/libOsiClp.a matches
> Binary file /home/bg/Documents/prj/coin-Cbc-2.9/lib/libOsiCommonTests.a
> matches
> grep: /home/bg/Documents/prj/coin-Cbc-2.9/lib/pkgconfig: Is a directory
>
>
> Gleb
>
> On 22/02/2016 10:36 AM, Ted Ralphs wrote:
>
> As far as I know, there shouldn't be anything special you need to do in
> order to link to static libraries in Linux. What's the error? On Windows,
> we only support generation of static libraries at this point, so nothing
> should be any different there.
>
> Ted
>
> On Sun, Feb 21, 2016 at 6:02 PM, Gleb Belov <gleb.belov at monash.edu> wrote:
>
>> Now it works with 2268 without any further changes, thank you.
>>
>> Next question: when configuring with --enable-static --disable-shared,
>> the /lib forlder has only .a (and probably .la) files and the examples'
>> Makefile is not much different. However my executable does not link. Is
>> there any specific link flag in this case? What is under Win?
>>
>
>


-- 
Dr. Ted Ralphs
Professor, Lehigh University
(610) 628-1280
ted 'at' lehigh 'dot' edu
coral.ie.lehigh.edu/~ted
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://list.coin-or.org/pipermail/cbc/attachments/20160221/22f98440/attachment.html>