[PD] imagemagick --enable shared

[Yves Degoyon]

hi,

maybe Rob could answer better than me, BUT ...
some little remarks below :


sara kolster wrote:

> Hi,
>
> I hope anyone can help me out on this. I posted this message just 
> before the whole mac-pc+linux discussion, so it dissapeared pretty 
> quick, but if there's someone out there that can solve my 'issue', I 
> would be pleased.
>
> I'm following Rob Canning's instructions for building pdp_pidip on 
> osx2.8;
> http://www.robcanning.utvinternet.com/pidip-install-osx.html#installlibs
> but ran into the following problem when i try to install the Imagemagick.
> [before installing ImageMagick i edited the .info file with --enable 
> shared]
>
> ibtool: install: warning: relinking `libMagick++.la'
>
> *** Warning: linker path does not have real file for library -lstdc++.
> *** you link to this library. But I can only do this if you have a
> *** shared version of the library, which you do not appear to have
> *** because I did check the linker path looking for a file starting
> *** with libstdc++ and none of the candidates passed a file format test
> *** using a file magic. Last file checked: 
> /usr/lib//gcc/darwin/default/libstdc++.a
>
> *** Warning: linker path does not have real file for library -lgcc.
> *** I have the capability to make that library automatically link in when
> *** you link to this library. But I can only do this if you have a
> *** shared version of the library, which you do not appear to have
> *** because I did check the linker path looking for a file starting
> *** with libgcc and none of the candidates passed a file format test
> *** using a file magic. Last file checked: 
> /usr/lib//gcc/darwin/default/libgcc.a
> *** The inter-library dependencies that have been dropped here will be
> *** automatically added whenever a program is linked with this library
> *** or is declared to -dlopen it.
> g++ -r -Wl,-bind_at_load -keep_private_externs -nostdlib -o 
> .libs/libMagick++-5.5.6-Q16.0.0.0.dylib-master.o .libs/Blob.o 
> .libs/BlobRef.o .libs/CoderInfo.o .libs/Color.o .libs/Drawable.o 
> .libs/Exception.o .libs/Functions.o .libs/Geometry.o .libs/Image.o 
> .libs/ImageRef.o .libs/Montage.o .libs/Options.o .libs/Pixels.o 
> .libs/STL.o .libs/Thread.o .libs/TypeMetric.o && g++ -dynamiclib 
> -flat_namespace -undefined suppress -o 
> .libs/libMagick++-5.5.6-Q16.0.0.0.dylib 
> .libs/libMagick++-5.5.6-Q16.0.0.0.dylib-master.o -L/sw/lib 
> -L/usr/X11R6/lib /sw/lib/libMagick.dylib -L/usr/lib/gcc/darwin/3.3 
> -L/usr/lib/gcc/darwin -L/usr/libexec/gcc/darwin/ppc/3.3/../../.. 
> -lSystem -install_name /sw/lib/libMagick++-5.5.6-Q16.0.dylib 
> -compatibility_version 1 -current_version 1.0
> g++: /sw/lib/libMagick.dylib: No such file or directory
> libtool: install: error: relink `libMagick++.la' with the above 
> command before installing it
> make[4]: *** [install-libLTLIBRARIES] Error 1
> make[3]: *** [install-am] Error 2
> make[2]: *** [install-recursive] Error 1
> make[1]: *** [install-recursive] Error 1
> make: *** [install-recursive] Error 1
> ### execution of make failed, exit code 2
> Failed: installing imagemagick-5.5.6-12 failed
> [okaras:/sw] sara# pico 
> /sw/fink/10.2-gcc3.3/unstable/main/finkinfo/graphics/imagemagick-5.5.6-12.info 
>
>
> I think there's something wrong with the way the libs are linked. [or 
> unable to link] and i found the following lines in the FAQ of gcc:
>
>
> Dynamic linker is unable to find GCC libraries
>
> This problem manifests itself by programs not finding shared libraries 
> they depend on when the programs are started. Note this problem often 
> manifests itself with failures in the libio/libstdc++ tests after 
> configuring with |--enable-shared| and building GCC

so, they basically, "hum, this problem happens, that's interesting",
but don't they give a way to fix it ??

>
> [http://www.gnu.org/software/gcc/faq.html#rpath]
>
> As a reaction on the Finklist i got the following answer:
>
>> As you've discovered, ImageMagick has trouble building shared libraries
>> on Darwin/OS X. That's exactly why the package maintainer did *not*
>> choose to include the --enable-shared flag in the .info file.
>
they also do this for Linux and there's absolutely no reason for that.
considering that Rob managed to do that compilation on OSX,
it seems to be a wrong choice on their side.

good luck,
sevy

>
> But; does anyone know how I can install imagemagick with --enable shared
> without getting in trouble?
> Sara
>
>
>
>
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