Re: Update to Octave 4.0 for Windows

[Tatsuro MATSUOKA]

>All I know is when I first started looking about setting things up here to 
>maybe work on a few bugs/patches, etc. I went through an endless recursive 
>loop of link hopping to try to find a set of instructions on what was needed 
>to do so. (only thing obvious was the need for Mercurial to manage the source, 
>but testing many things would be impossible (?) without ability to compile, 
>no?) Eventually I found one page (manual? wiki? I forget) that said in a very 
>roundabout way: "you need Linux". If you get a process together, would be 
>great for that to be captured as a step-by-step on the wiki, whether you 
>manage it all with Windows or do a cross-compile. 
>
>
>Nick J
>
Build instruction of windows binary using mxe-octave is shown,

http://wiki.octave.org/Windows_Installer


I have build several times windows binary on Linux(Ubuntu 14.04 amd64) using 
mxe-octave
according to the instructions the above.  


For Windows native build, I have tried using Msys2 
(64 bit (32bit Msys2 does no work well on my PC)) 
and MinGW w64 32 bit compiler (gcc-4.9.2).

Unlike on Msys2 32bit, on Msys2 64 bit host and 
build detection does not work properly, 
I executed some dirty hacks in the src/**.mk files.
I have succeeded to build octave core but have not succeeded 
to build some dependencies for octave-forge package.

My trails were done from end of June to beginning of July.
But I have had no chance to continue this because of lack of time. 

I have not completed the build process so that 
I cannot revise MinGW build (Windows native build) section on the Wiki.
(The Wiki is instruction using msys + MinGW is outdated 
but new instruction cannot be described at this moment.)

Tatsuro