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Re: [Help-glpk] Re: GLPK MingW build files and PyGLPK

From: Luiz M. M. Bettoni
Subject: Re: [Help-glpk] Re: GLPK MingW build files and PyGLPK
Date: Mon, 30 Nov 2009 11:51:26 -0300
User-agent: Thunderbird (Windows/20090812)

Hi, Nigel.

Thanks. I've missed this point before, but Andrew put some light on it.
Really, the difference between the MinGW and MSYS buits are the -O2 CFLAG (missing in default GLPK build with MSYS).

So, really thanks.
With MSYS I can bypass MinGW makefiles (with no extra dependencies) for my GLPK builds.
By the way, in Gusek I'll adopt the Xypron binaries (as discussed before).


At 30/11/2009 10:30, Nigel Galloway wrote:
That sounds like a solution.
Note though that whether compiling using your own MingW makefiles or make files compatible with MSYS (and hence Linux) you are using the same MingW compiler (gcc 3.4 as standard or gcc 4.2 if youv'e  gone experimental). The difference must therefore be due to an option you are passing to the compiler, and not the particular make tool.
Cygwin is far too complicated and your code will have dependencies. Any timings may depend on how you've built Cygwin.
Good Luck,

----- Original Message -----
From: "Luiz M. M. Bettoni"
To: "Nigel Galloway" , "help-glpk" , "Andrew Makhorin"
Subject: Re: Re: [Help-glpk] Re: GLPK MingW build files and PyGLPK
Date: Thu, 26 Nov 2009 08:47:00 -0300

Hi, Nigel, Andrew.

I've build glpsol.exe with MSYS and cygwin.
Besides it's useful, the binary file has more than double sized and the solver looks like quite slower.

So, for my testing purposes, I'll use my own MingW build files.
In Gusek package I'll use Xypron pre-built files.

Thanks, guys!

At 16:59, Nigel Galloway wrote:
You should probably add the MSYS extensions to MingW, these include a make utility compatible with Linux. This is what I usually use to compile glpk on windows using NetBeans rather than Visual C++ as the IDE. I make no changes.

Good Luck,


----- Original Message -----
From: "Andrew Makhorin" <address@hidden>
To: "Luiz Bettoni" <address@hidden>
Cc: "help-glpk" <address@hidden>
Subject: [Help-glpk] Re: GLPK MingW build files and PyGLPK
Date: Thu, 5 Nov 2009 20:40:50 +0300

You do not intend to include MingW w32
build files in GLPK package anymore?
On every GLPK launch i've patched them and
sent to the list, but if no-one uses mingw
to build GLPK (I'm alone? U), it's wast effort.
If MingW build files isn't util anymore, I'm
planning replace Gusek glpsol binaries by
winglpk pre-build ones.
If you build only the glpsol executable, why not to use Cygwin?
It allows configuring and building the package in the standard way.
Is there anything specific in Gusek that requires Mingw?




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