On 3/16/16 2:33 PM, Simon Urbanek wrote:
Mick,
the linked path is governed by the library itself - in particular the ID entry
of it. So, for example, R's libraries have:
$ otool -L /Library/Frameworks/R.framework/Resources/lib/libRblas.dylib
/Library/Frameworks/R.framework/Resources/lib/libRblas.dylib:
/Library/Frameworks/R.framework/Versions/3.2/Resources/lib/libRblas.dylib
(compatibility version 0.0.0, current version 0.0.0)
/Library/Frameworks/R.framework/Versions/3.2/Resources/lib/libgfortran.3.dylib
(compatibility version 4.0.0, current version 4.0.0)
/Library/Frameworks/R.framework/Versions/3.2/Resources/lib/libquadmath.0.dylib
(compatibility version 1.0.0, current version 1.0.0)
/usr/lib/libSystem.B.dylib (compatibility version 1.0.0, current
version 1197.1.1)
Note the first line - that is the ID line. When you link against that binary,
that's what the resulting binary will refer to. I bet the FastR binary doesn't
have the correct ID - you can fix it using
install_name_tool -id <id-entry> <library>
so the above would be
install_name_tool -id
/Library/Frameworks/R.framework/Versions/3.2/Resources/lib/libRblas.dylib
/Library/Frameworks/R.framework/Versions/3.2/Resources/lib/libRblas.dylib
There a some projects that are clueless about OS X and require
DYLD_LIBRARY_PATH because they don't set the id correctly. That is a bug in the
library, you should never set DYLD_LIBRARY_PATH because it breaks the search
path very badly (it is NOT the same as LD_LIBRARY_PATH on unix which people
confuse a lot). A little more sane way is to use DYLD_FALLBACK_LIBRARY_PATH
which is more akin to LD_LIBRARY_PATH on Linux, but only as a last resort.
Thanks, our mails crossed, but I appreciate the explanation. It was a
typo on DYLD. We did use to set the DYLD_FALLBACK_LIBRARY_PATH but we
don't any more as it doesn't work on El Cap with shells in the path.
I was actually using install_name_tool -change in our build of the
stats.so to patch up the refs to lapack and blas. Now I can nuke that as
the id change will now get it right.
Mick
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