Re: Error when including openexr

[julien lepiller <julien@lepiller.eu>]

Le 2017-06-01 00:22, Danny Milosavljevic a écrit :
> Hi Hartmut,
> 
> On Tue, 30 May 2017 16:48:38 +0200
> Hartmut Goebel <h.goebel@crazy-compilers.com> 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.