[Therion] First compilation of Therion in Ubuntu 16.04

[Rodrigo Severo]

2017-02-20 15:39 GMT-03:00 Rodrigo Severo <rodrigo at fabricadeideias.com>:

>
> I'm trying to compile Therion (sources from github) on Ubuntu 16.04 for
> the first time.
>
> After installing several missing libraries I'm getting the following error:
>
> make[1]: Entering directory '/home/rodrigo/devel/therion/loch'
> c++ -o ./loch -Wall ./lxR2P.o ./lxTR.o ./lxOGLFT.o ./lxSetup.o
> ./lxRender.o ./lxWX.o ./lxImgIO.o ./lxLRUD.o ./lxFile.o ./lxSTree.o
> ./lxData.o ./lxMath.o ./lxSView.o ./lxSScene.o ./lxGUI.o ./lxGLC.o
> ./lxOptDlg.o ./lxAboutDlg.o ./lxPres.o ./img.o -lwx_gtk2u_gl-3.0
> -L/usr/lib/x86_64-linux-gnu -pthread   -lwx_gtk2u_xrc-3.0
> -lwx_gtk2u_html-3.0 -lwx_gtk2u_qa-3.0 -lwx_gtk2u_adv-3.0
> -lwx_gtk2u_core-3.0 -lwx_baseu_xml-3.0 -lwx_baseu_net-3.0 -lwx_baseu-3.0
>  -L/usr/lib/vtk-5.10 -lvtkHybrid -lvtkImaging -lvtkIO -lvtkGraphics
> -lvtkFiltering -lvtkCommon -lfreetype -lGLU -lGL -lpthread -lX11 -lz -s
> /usr/bin/ld: ./lxRender.o: undefined reference to symbol 'png_write_row@
> @PNG12_0'
> //lib/x86_64-linux-gnu/libpng12.so.0: error adding symbols: DSO missing
> from command line
> collect2: error: ld returned 1 exit status
> Makefile:162: recipe for target 'loch' failed
> make[1]: *** [loch] Error 1
> make[1]: Leaving directory '/home/rodrigo/devel/therion/loch'
> Makefile:202: recipe for target 'loch/loch' failed
> make: *** [loch/loch] Error 2
>
>
> The problem here is that libpng12.0-dev is already installed.
>
> After some research I believe this might be a problem related to missing
> symbols related to bad ordering of library inclusion: http://
> stackoverflow.com/questions/19901934/strange-linking-
> error-dso-missing-from-command-line
>
> How can I fix this?
>

Attached is a patch of the changes I made on loch/Makefile to fix the above
error. I'm really not sure if this is the proper fix but "it work's".

Please consider it for inclusion on Therion source.

If it's better that I send a pull request, let me know.


Regards,

Rodrigo
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