[mlpack] Problem building MLPACK - CF linking error

[Sylvana Alpert]

Dear Gilles, 

Thanks for your help and prompt reply. I have recompiled boost using mingw and following your instructions, however, MLPACK still fails at the same linking stage. I have attached the text file containing all the details. Also, I have attached the CMakeCache.txt file from the build. 

I checked my installation of MinGW and I only have one installation C:\MinGW. In this directory, there is C:\MinGW\mingw32\bin which contains some duplicate executables (also in C:\MinGW\bin) but from what I read online this is how MinGW installs by default. 

It looks like cf.exe fails to find boost::program_options references. 
These are the versions I am using: 
Boost: 1.54.0
MLPACK: 1.0.9

Any ideas of what might be going wrong? 
Also, when I compiled in MSYS, "make -f Makefile all" would not do anything for me. It just printed the Windows version but did not do the build. I had to run mingw32-make to compile. 

Thanks again for your help!
Sylvana
 



-----Original Message-----
From: mlpack-bounces at cc.gatech.edu [mailto:mlpack-bounces at cc.gatech.edu] On Behalf Of Gilles Barges
Sent: Thursday, August 14, 2014 11:30 PM
To: mlpack at cc.gatech.edu
Subject: Re: [mlpack] Problem building MLPACK - CF linking error

hi Sylvana,

> I am new to Mlpack and I have had a lot of trouble trying to build it in Windows 7.

you're welcome :-)

> I followed the instructions in MLPACKOnWindows and managed to build all the dependencies and configure MLPACK in Cmake.
> Now, I am running mingw32-make in shell and I get the attached error. It fails to link the CF module to the appropriate boost library.
> I got 32bit pre-compiled boost libraries in MSVC but I am compiling MLPACK with mingw, could this be the cause of the problem?

First, you give a truncated report. End of lines are missing. Please, do no attache an image, but copy/paste the text.
If your terminal cannot copy-paste a long text, use 'make ... > report.txt 2>&1'

I see you're using Mingw. Is your system well installed ? I can see the path to ld.exe starts in c:/mingw, goes down deep inside, then reach back c: and finally use C:/mingw32/.... Looks like a mix of 2 compiler chains ?

I see you're using the CMD terminal.
Really, you should use MSYS environment - and avoid using things coming fom MSVC++
Note: after installing a fresh MSYS, do not forget to run the post-install script.

to compile boost libraries yourself, do the following:
- Do not try to launch bootstrap from MSYS console !
- Lauch cmd.exe, cd to the BOOST root directory, and
  > boostrap mingw
OK, quit CMD.
- In MSYS console now, cd to the BOOST root directory, and
  $ /b2 --prefix=/usr/local toolset=gcc
now go watch a DVD... OK
  $ ./b2 --prefix=/usr/local toolset=gcc install OK Header files are installed in /usr/local/include/boost-1_55/boost/

good luck
--
Gilles Barges.



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