Re: [Openexr-devel] Compile *only* static libs for OS X Uni?

[Paul Schneider]

Hi Russ,

--enable-osx-universal-binaries sets up the CXXFLAGS and LDFLAGS in  
much the same way that I did manually, except for two architectures  
instead of four.  I skipped that flag because I manually set them up  
the way I wanted them.

I believe bootstrap is only necessary if you are building completely  
from scratch.  bootstrap creates the configure script, so if you had  
a ./configure, you probably didn't need to ./bootstrap.  If you're not  
building from scratch, you can "make distclean" to reset everything to  
a pristine state.

I'm not sure about the visibility warnings.  Are you getting these  
trying to link the EXR code, or trying to link your code to the EXR  
libraries?

If you are having trouble linking your own code to the EXR libraries,  
and your code was built with different visibility settings than the  
EXR libraries, you may run into trouble.  See http://gcc.gnu.org/wiki/Visibility 
 for more information. I think the solution is to either change the  
visibility settings of your code, or change EXR's visibility settings,  
probably by adding some form of -fvisibility to your CXXFLAGS. I'm not  
an expert on this area of gcc, so maybe somebody else can provide more  
insight.

If you are having trouble just trying to link the EXR libraries  
themselves, then there may be a problem with your configuration.  I  
would "make distclean" and start again.  Also, make sure that you  
"make install" each package before building the next one.  For  
example, OpenEXR depends on IlmBase, so make sure that you "make  
install" IlmBase before attempting to build OpenEXR.

Good luck!
- Paul



On Dec 10, 2008, at 12:19 AM, Russ wrote:

> Thanks Paul. I am able to get the libraries to compile when I run  
> your commands below as a script, but not when running them against  
> the posted download. So perhaps the CVS is more up-to-date than the  
> posted build. Not sure why you don't have the listed --enable-osx- 
> universal-binaries. Note that from the distributed directions, you'd  
> never know about bootstrap, because it is only in the CVS directions.
>
> I'm currently encountering  "different visibility" warnings,  
> followed by undefined symbol errors on
> Imf::Channel::Channel(Imf::PixelType, int, int)
> Imf::Slice::Slice(...
> Imf::OutputFile::OutputFile(...
> Imf::RgbaInputFile::RgbaInputFile(...
>
> Any hints to resolve this would be appreciated, I'm kinda fried.  
> This was previously set up to compile against 1.2.2, though I think  
> I had to build my own OpenEXR project to get it to work (helps with  
> debugging anyway)
>
> Thanks,
>
> Russ
>
>
>
> ----- Original Message ----
>
> Sent: Monday, December 8, 2008 8:23:36 PM
> Subject: Re: [Openexr-devel] Compile *only* static libs for OS X Uni?
>
>
> Hi Russ,
>
> This seems to be working for me with a fresh download of the source  
> from CVS:
>
> %cvs -z3 -d:pserver:address@hidden:/sources/ 
> openexr co IlmBase
> %cvs -z3 -d:pserver:address@hidden:/sources/ 
> openexr co OpenEXR
>
> %export CXXFLAGS='-isysroot /Developer/SDKs/MacOSX10.5.sdk -arch ppc  
> -arch i386 -arch ppc64 -arch x86_64'
> %export LDFLAGS='-Wl,-syslibroot,/Developer/SDKs/MacOSX10.5.sdk - 
> arch ppc -arch i386 -arch ppc64 -arch x86_64'
>
> %cd IlmBase
> %./bootstrap
> %./configure --disable-dependency-tracking
> %make
> %sudo make install
>
> %cd ../OpenEXR
> %./bootstrap
> %./configure --disable-dependency-tracking
> %make
> %sudo make install
>
> %file /usr/local/lib/libIlmImf.a
> /usr/local/lib/libIlmImf.a: Mach-O universal binary with 4  
> architectures
> /usr/local/lib/libIlmImf.a (for architecture ppc):    current ar  
> archive
> /usr/local/lib/libIlmImf.a (for architecture i386):    current ar  
> archive
> /usr/local/lib/libIlmImf.a (for architecture ppc64):    current ar  
> archive
> /usr/local/lib/libIlmImf.a (for architecture x86_64):    current ar  
> archive
>
> %file /usr/local/lib/libIlmImf.dylib
> /usr/local/lib/libIlmImf.dylib: Mach-O universal binary with 4  
> architectures
> /usr/local/lib/libIlmImf.dylib (for architecture ppc7400):    Mach-O  
> dynamically linked shared library ppc
> /usr/local/lib/libIlmImf.dylib (for architecture i386):    Mach-O  
> dynamically linked shared library i386
> /usr/local/lib/libIlmImf.dylib (for architecture ppc64):    Mach-O  
> 64-bit dynamically linked shared library ppc64
> /usr/local/lib/libIlmImf.dylib (for architecture x86_64):    Mach-O  
> 64-bit dynamically linked shared library x86_64
>
>
> This is all definitely harder than it needs to be; I'll see about  
> submitting a patch that enables 4-way universal builds in a more  
> user-friendly manner.  In the meantime, please try the above and let  
> me know if it's not working for you.
>
> - Paul
>
>
>
> On Dec 5, 2008, at 6:05 PM, Russ wrote:
>
> > I'm trying to create static libraries for OSX that are 4-way  
> > universal from openexr-1.6.1. I've added the architectures to the  
> > config and changed from 10.4u to 10.5 SDKs and run it with the two  
> > osx options per README.OSX
> >
> > The ilmbase compile & install seemed to go reasonably well. I have  
> > the 4-way static libraries in /usr/local/lib --- libHalf.a etc. The  
> > dylibs are i386 only, though.
> >
> > Now I'm trying the same thing on openexr itself, but it seems  
> > intent on building .lo and .la versions and using the dylibs ---  
> > but since the dylibs are i386 only, the whole thing is rolling over  
> > and failing with spectacular numbers of intermingled missing- 
> > architecture messages.
> >
> > From what I saw in ilmbase, I need the openexr make to be trying to  
> > create .o and .a versions, and using the 4-way universal .a  
> > versions in /usr/local/lib
> >
> > Suggestions appreciated, thanks.
> >
> >
> >
> >
> >
> >
> > _______________________________________________
> > Openexr-devel mailing list
> > address@hidden
> > http://lists.nongnu.org/mailman/listinfo/openexr-devel
>
>
>
>
>
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