[Octave-patch-tracker] [patch #8314] Patch to build system to use @rpath for Mac liboctave/libinterp

[Michael C. Grant]

URL:
  <http://savannah.gnu.org/patch/?8314>

                 Summary: Patch to build system to use @rpath for Mac
liboctave/libinterp
                 Project: GNU Octave
            Submitted by: mcgrant
            Submitted on: Thu 13 Feb 2014 04:22:13 PM GMT
                Category: None
                Priority: 5 - Normal
                  Status: None
                 Privacy: Public
             Assigned to: None
        Originator Email: 
             Open/Closed: Open
         Discussion Lock: Any

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Details:

The following patch inserts additional build steps (using "all-local") in
libinterp/Makefile, liboctave/Makefile, and src/Makefile so that these
internal libraries and the binaries use the @rpath construct.

Specifically, the libraries' "install names" are changed to
@rpath/liboctinterp.2.dylib and @rpath/liboctave.2.dylib, and the executables
add $(octlibdir) to their RPATH list.

Why does this matter? It enables MEX/OCT files to be shared between users
without recompilation and without having to resort to DYLD_LIBRARY_PATH
tricks. I believe this is already possible for Linux and/or Windows, but these
steps are needed for the Mac. (Indeed, Octave Forge's app bundles have to do
something like this on a larger scale).

If you study the patch you will see I attempted to ensure that this is engaged
ONLY on a Mac, only when shared libraries are being built, and only when the
'install_name_tool' utility is available. So this should leave builds for all
other platforms unchanged.





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File Attachments:


-------------------------------------------------------
Date: Thu 13 Feb 2014 04:22:13 PM GMT  Name: rpath.diff  Size: 3kB   By:
mcgrant

<http://savannah.gnu.org/patch/download.php?file_id=30538>

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