[OS] A bit more on ASL and Msys

[Kipp Martin]

Hi Lou:

I am able to build and run OS on MSys/cl using ASL with no problem, but
I am building with just

./configure

I want to try to duplicate exactly what you are doing. What is your
command line when you run configure?

Thanks
> 
> 	I took time on Wednesday to play with building OS/trunk under Msys, with
> ASL in the mix.  It looks like you've removed the use of the /mingw/include, and
> I had no problems there.  I still have difficulty with linking when ASL is
> present.  A few bits of information to think about:
> 
> 	Library incompatibility seems to be the base issue.  When ASL is built
> with the compile_MS_ASL script, the script copies source files from ASL/solver
> into a build directory and then calls nmake with solvers/makefile.vc as the
> makefile.  Makefile.vc forces a set of C flags:
> 
>   CFLAGS = -nologo -Ot1 -MT
> 
> 	When I build in debug mode, this causes an immediate link problem for
> cbc, because the standard Coin debug build specifies -MTd. An optimised build 
> has no trouble at this point, because Coin specifies -MT for the optimised 
> build.
> 
> 	Changing makefile.vc to specify -MTd / -MT as appropriate gets past cbc,
> but ultimately both debug and optimised builds founder on
> OS/src/OSSolverService.exe, with the message
> 
>   amplsolv.lib(fpinitmt.obj) : error LNK2005: __matherr already defined in
>     LIBCMT.lib(matherr.obj)
>   Creating library OSSolverService.lib and object OSSolverService.exp
>   OSSolverService.exe : fatal error LNK1169: one or more multiply defined
>     symbols found
> 
> 	Looking in ASL/solvers/fpinitmt.c, down toward the end of the file
> there's the code below, which defines a matherr subroutine.  When I added the
> #if 0 ...  endif guard to suppress this code, the build and link works just
> dandy.  OS claims it passes all its unit tests, but my guess is that this is not
> a conclusive test.  Unfortunately, I'm not an AMPL user and I don't have a good
> idea of how and where this function would be used.
> 
> 
> #ifdef __MINGW32__
> #define matherr _matherr
> #endifLou Hafer wrote:
> Kipp, Jun,
> 
> #if 0
>  matherr_rettype
> matherr( struct _exception *e )
> {
> 	switch(e->type) {
> 	  case _DOMAIN:
> 	  case _SING:
> 		errno = set_errno(EDOM);
> 		break;
> 	  case _TLOSS:
> 	  case _OVERFLOW:
> 		errno = set_errno(ERANGE);
> 	  }
> 	return 0;
> 	}
> #endif
> 
> 	Presumably, at some point in the evolution of Msys and/or MSVS, this
> definition was required. Perhaps it's no longer needed? I'm pretty sure I'm 
> up-to-date for MSVS / Platform SDK / Msys --- all acquired within the last 
> month, due to upgrading my home system.
> 
> 	What do you folks see?
> 
> 							Lou
> 
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-- 
Kipp Martin
Professor of Operations Research
	and Computing Technology
University of Chicago
Graduate School of Business
5807 South Woodlawn Avenue
Chicago IL 60637
773-702-7456
http://gsbkip.chicagogsb.edu
http://www.coin-or.org/