Re: [Openexr-devel] OpenEXR 1.5.0, OpenEXR-Images 1.5.0 released

[Paul Schneider]

Hi, all,

I believe that the -pthread option is not supported, or necessary, on  
OS X.  This mailing list post seems to back me up:

http://lists.apple.com/archives/Unix-porting/2005/Mar/msg00019.html


A simple test suggests that -pthread is not a valid option to pass to  
either the compiler or the linker (if I'm doing this right):

digdug:~/src paul$ cat > test.c
#include <stdio.h>

int main (int argc, char** argv)
{
        printf ("hello world!\n");
        return 0;
}

digdug:~/src paul$ gcc -c test.c -pthread
i686-apple-darwin8-gcc-4.0.1: unrecognized option '-pthread'

digdug:~/src paul$ gcc -o test test.o -pthread
i686-apple-darwin8-gcc-4.0.1: unrecognized option '-pthread'

digdug:~/src paul$ ./test
hello world!


I've got an OS X machine set up here, so if you'd still like the  
configure output, I can send it along...

- Paul



On Dec 18, 2006, at 5:56 PM, Andrew Kunz wrote:

> Hey Ken.
>
> Thanks for the feedback.  The -pthread option was added as a ldflag
> because it was neccessary when dependent libraries linked with  
> OpenEXR on
> Linux.
>
> Currently, the test that is run by configure is compiled and linked  
> in one
> step, so configure on your platform is probably adding threading  
> flags to
> the link step that should not be included when compiling and  
> linking are
> separate steps.
>
> Can you send me a dump of the messages you see when you run  
> configure on
> the IlmBase library, and also a copy of the IlmBase.pc file that gets
> generated in your build directory?  Do you see these errors when  
> you build
> IlmBase, or only for OpenEXR?
>
> Cheers,
> Andrew
>
>
>
>
> > Hi Florian,
> >
> > Many thanks for what appears to be a significant release.
> >
> > I have problems building this one though.  I am on a macbook pro  
> > under
> > OSX with openexr-1.4.0 already installed.  I get the following
> > warning for
> > every source file compiled in the openexr library:
> >
> >      i686-apple-darwin8-g++-4.0.1: unrecognized option '-pthread'
> >
> > It then fails compiling exrheader with:
> >
> >      main.cpp: In function 'void printCompression(Imf::Compression)':
> >      main.cpp:98: error: 'B44_COMPRESSION' was not declared in this
> > scope
> >      main.cpp: In function 'void printChannelList(const
> > Imf::ChannelList&)':
> >      main.cpp:265: error: 'const struct Imf::Channel' has no member
> > named 'pLinear'
> >
> > After uninstalling the 1.4.0 version of openexr and starting over it
> > built and installed
> > correctly, however the -pthread warning still exists.
> >
> > Thanks again.
> > --Ken
> >
> > On 16 Dec 2006, at 02:52, Florian Kainz wrote:
> >
> > > December 15, 2006 - a new development version of OpenEXR is now
> > > available.
> > > We have tested the code in this version internally at ILM, but we
> > > would
> > > like to get feedback from others before we release a production
> > > version.
> > > You can download the source code and sample images from here:
> > >
> > > http://download.savannah.gnu.org/releases/openexr
> > >
> > > The new version includes several significant changes:
> > >
> > > * OpenEXR supports a new image compression method, called B44.   
> > > It has
> > >   a fixed compression rate of 2.28:1, or 4.57:1 if used in  
> > > combination
> > >   with luminance/chroma encoding.  B44-compressed images can be
> > >   uncompressed fast enough to support real-time playback of image
> > >   sequences.
> > >
> > > * The new playexr program plays back moving image sequences.   
> > > Playexr
> > >   is multi-threaded and utilizes the threading capabilities of the
> > > IlmImf
> > >   library that were introduced in OpenEXR 1.3.0.  The program plays
> > > back
> > >   B44-compressed images with fairly high-resolution in real time on
> > >   commodity hardware.
> > >
> > > * The playexr program and a new version of the existing exrdisplay
> > > image
> > >   viewer both support color rendering via color transforms  
> > > written in
> > >   the new Color Transformation Language or CTL.
> > >
> > >   CTL is not part of OpenEXR; it will be released separately.
> > >
> > >   CTL support in playexr and exrdisplay is optional; the programs  
> > > can
> > >   be built and will run without CTL.
> > >
> > > * In preparation for the release of CTL, OpenEXR has been split into
> > >   three separate packages:
> > >
> > >      - IlmBase 0.9.0 includes the Half, Iex, Imath and IlmThread
> > > libraries
> > >
> > >      - OpenEXR 1.5.0 includes the IlmImf library, programming  
> > > examples
> > >        and utility programs such as exrheader or exrenvmap
> > >
> > >      - OpenEXRViewers 0.9.0 includes the playexr and exrdisplay
> > > programs
> > >
> > > * The "Technical Introduction to OpenEXR" document now includes a
> > >   recommendation for storing CIE XYZ pixel data in OpenEXR files.
> > >
> > > * A new "OpenEXR Image Viewing Software" document describes the
> > >   playexr and exrdisplay programs.  It briefly explains real-time
> > >   playback and color rendering, and includes recommendations for
> > >   testing if other image viewing software displays OpenEXR images
> > >   correctly.
> > >
> > > * The OpenEXR sample image set now includes B44-compressed files and
> > >   files with CIE XYZ pixel data.
> > >
> > >
> > >
> > > _______________________________________________
> > > Openexr-devel mailing list
> > > address@hidden
> > > http://lists.nongnu.org/mailman/listinfo/openexr-devel
> >
> >
> >
> > _______________________________________________
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> > address@hidden
> > http://lists.nongnu.org/mailman/listinfo/openexr-devel
>
>
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