Re: Error when including openexr

[julien lepiller]

Le 2017-06-01 00:22, Danny Milosavljevic a écrit :
> Hi Hartmut,
>
> On Tue, 30 May 2017 16:48:38 +0200
> Hartmut Goebel <address@hidden> wrote:
>
> > /gnu/store/…-openexr-2.2.0/include/OpenEXR/ImfInt64.h:44:24:
> > fatal error: ImathInt64.h: No such file or directory
> >
> > but file …-openexr-2.2.0/include/OpenEXR/ImathInt64.h exists.
> >
> > I discovered that OpenEXR/ImfInt64.h contains
> >
> > #include "ImathInt64.h"
> > #include "ImfNamespace.h"
> >
> > Maybe this should be "OpenEXR/ImathInt64.h" (same for the other)?
>
> I think not.  cpp (the C preprocessor) has no notion of modules and
> what it does is just process #include "xx" relative to the directory
> of the file it currently reads (the one containing the "#include"
> directive), no matter how it went there.  (If it can't find it then it
> will fallback to the #include <xx> handler - but I think that's bad
> form).
>
> (If you wanted to specify the "OpenEXR/" you'd usually put
> /gnu/store/…-openexr-2.2.0/include into the include path and include
> it like this in OpenEXR/ImfInt64.h : #include <OpenEXR/ImathInt64.h>
> with the <>)
>
> Strange error message, though.
>
> Is that gcc?  Which version?

I've seen something similar already, openexr includes are divided in 
ilmbase and openexr, so you need both inputs. See darktable in photo.scm 
for an example.