[Cbc] Static linking from own code in Linux

[Gleb Belov]

It links now! But:

bg at bg-vbox:/media/sf_SHARED/prj/libmzn/build$ mzn-cbc
mzn-cbc: error while loading shared libraries: libCgl.so.0: cannot open 
shared object file: No such file or directory

I compiled cbc as follows:
./configure -C --disable-shared --enable-static && make -j 2 && make install

Gleb

On 22/02/2016 12:01 PM, Ted Ralphs wrote:
> 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 
> <mailto: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 <mailto: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 <http://coral.ie.lehigh.edu/%7Eted>

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