Re: [Mingw-cross-env-list] Missing libmng dependency on lcms

[Mark Brand]

On 11/11/2010 01:24 AM, Volker Grabsch wrote:
> David García Garzón<address@hidden>  schrieb:
> > On Tuesday 09 November 2010 23:23:44 Mark Brand wrote:
> > > I took a quick look at this. According to libmng's  README.config ,
> > > libmng can use lcms. But the "lcms" in mingw-cross-env is actually lcms2
> > > which does not work. Apparently, the older lcms would need to be added
> > > to mingw-cross-env, or perhaps libmng could be made to work with lcms2.
> > > Are you interested in pursuing one of the options?
> > [...]
> >
> > Try compiling just libmng from a clean installation. The compilation fails
> > complaining about lcms. Compile lcms2 (the same version in cross-mingw-env)
> > first and it will compile with no modification (no need for lcms1). I guess
> > that usually lcms2 gets compiled previously in the build sequence and because
> > of that it gave no problem until now.
> So your analysis seems contradict that of Mark.
>
> Mark, David, it would be great if you could clarify whether lcms1 is
> needed or not. (i.e. whether the current lcms(2) is sufficient or not)

Libmng would build fine with "make libmng" on a clean mingw-cross-env 
installation, however that was without lcms support. With MNG_FULL_CMS 
defined, libmng requires lcms.h which of course is neither on a clean 
installation nor supplied by lcms2.

Lcms2 supplies lcms2.h, but this header is mentioned nowhere in 
libmng-1.0.10.  Even renamed to lcms.h, it is not compatible with libmng.

David's report is puzzling to me. He didn't say whether he had defined 
MNG_FULL_CMS, so that might be part of the explanation.

Since there was no lcms dependency for our libmng built without 
MNG_FULL_CMS, I interpreted David's original post as a request for lcms 
support in libmng. My commit adds "-DMNG_FULL_CMS" to libmng and adds 
the project "lcms1":
http://hg.savannah.gnu.org/hgweb/mingw-cross-env/rev/aef0ad263e19

With these changes libmng builds successfully with lcms support and 
seems to work fine. David, I'm curious to know if it works for you now too.

regards,

Mark