Installing LCM on WIndows

[Albert Thomas]

Hi,

I have installed LCM in Mac as well us Ubuntu and it is running fine :-) 

Now I am trying to install LCM on windows and following the below webpage for getting the dependencies (GLib (Run-time, dev, gettext-runtime (Run-time)). 

https://blogs.gnome.org/nacho/2014/08/01/how-to-build-your-gtk-application-on-windows/

I am struck at one point. Rather I should say I am not understanding clearly what to do with respect to this particular step. This step says that 

• Create a PKGBUILD file as you would do for Arch Linux for the package you would like to build for windows. You can find the gedit one here. Or you can find more information on how to create this file on the Arch Linux wiki.

I downloaded the PKGBUILD.txt file from the above link and I assume that I need to put this in some folder and run the next statement makepkg-mingw -sL from the terminal.  I tried putting in msys64/home/<username> and tried building ( I used msys installer for getting the GTK+). But this is not working out. 

Any suggestion will be of great help. Thank you very much

Albert Thomas  

[Alexander Szakaly]

What type of build are you attempting. Building with visual studio or msys? Which version?

For Visual Studio at least you just need to grab the prebuilt binaries of the dependencies... google will find them for you. :-)

BR

/Alex

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[Albert Thomas]

Hi Alex,

Thank for the reply. I am planning to build the LCM by using Visual Studio ( I have 2013 and 2012 installed) which I am yet to do.

I understand that one of the pre requisite for doing this is to get GLib and gettext-runtime. For that, as suggested in the build instructions I went to the website http://www.gtk.org and trying to get gtk+ bundle. Using msys installer and based on this website (https://blogs.gnome.org/nacho/2014/08/01/how-to-build-your-gtk-application-on-windows/) I am trying to get the gtk+ installed and got struck in that process as mentioned in my previous thread.

I am kind of new to this process and I think I am making some silly mistake.

Many thanks for your reply and hope we will be able to solve this out.

Thanks
Albert

[Albert Huang]

Hi Albert,

The GTK+ windows instructions are in an unfortunate state right now and I wouldn't recommend following them. Alex posted a link a few months ago to the direct binary download page:

https://groups.google.com/d/msg/lcm-users/_-t-Oz2QRcU/pdjnE56VCwAJ

http://ftp.gnome.org/pub/gnome/binaries/win32/glib/2.28/

I recommend avoiding the MSYS stuff for now.

Best,

Albert

[Albert Thomas]

Hi Albert,

Finally I have build the LCM.sln file in Visual Studio. Thanks for your help. I got Visual studio 2013 and it worked with some minor edits in the paths.

Now when I am trying to run the tests I am getting this following error. Anybody got this error before? Thanks in advance.

C:\Albert\lcm-1.3.0\test>python run_unit_tests.py

Running Python unit tests

Running C unit tests

'c\memq_test' is not recognized as an internal or external command,

operable program or batch file.

Traceback (most recent call last):

  File "run_unit_tests.py", line 83, in <module>

    sys.exit(main())

  File "run_unit_tests.py", line 79, in main

    run_tests()

  File "run_unit_tests.py", line 28, in run_tests

    run_gtest(os.path.join("c", "memq_test"))

  File "run_unit_tests.py", line 14, in run_gtest

    (name, xml_fname), shell=True)

  File "C:\Users\albertth\AppData\Local\Continuum\Anaconda\lib\subprocess.py",

ine 540, in check_call

    raise CalledProcessError(retcode, cmd)

subprocess.CalledProcessError: Command 'c\memq_test --gtest_output=xml:lcm_unit

est/c_memq_test.xml' returned non-zero exit status 1

[Albert Huang]

Hi Albert,

I'm not sure the unit tests work in Windows, unfortunately. I originally wrote them for Linux and OS/X but haven't gotten around to making them work in Windows.

Albert

[Albert Thomas]

Ok. Thanks Albert for letting me know about this.

So once you successfully build the LCM.sln, the LCM is setup completely like Linux and Mac? Could you let me know whether any additional steps are required. 

For running the first example, I tired creating a typedef by using the statement lcm-gen -p example_t.lcm. But it says, lcm-gen command not found. 

So I assume I will have to do some additional steps. Not able to make out clearly from the README text file.

Thanks

Albert

[Albert Huang]

Hi Albert,

The Linux and Mac installation puts the libraries and binaries in the system path. LCM doesn't have a Windows installer, so when you do a VS build everything gets built to a subdirectory of the source directory. The Windows build is geared more towards developers who plan on integrating the LCM binaries directly into their application. So in that sense it's doesn't have the typical development features that you'd typically find with an SDK and you may need to do a bit more work to glue the pieces together into your system. Unfortunately I don't have much more detailed advice than this as I don't use the Windows port myself.

Regards,

Albert