Ответ 1
Из Apple dyld man page:
@rpath/
Dyld maintains a current stack of paths called the run path list. When @rpath is encountered it is substituted with each path in the run path list until a loadable dylib if found. The run path stack is built from the LC_RPATH load commands in the depencency chain that lead to the current dylib load. You can add an LC_RPATH load command to an image with the -rpath option to ld(1). You can even add a LC_RPATH load command path that starts with @loader_path/, and it will push a path on the run path stack that relative to the image containing the LC_RPATH. The use of @rpath is most useful when you have a complex directory structure of programs and dylibs which can be installed anywhere, but keep their relative positions. This scenario could be implemented using @loader_path, but every client of a dylib could need a different load path because its relative position in the file system is different. The use of @rpath introduces a level of indirection that simplies things. You pick a location in your directory structure as an anchor point. Each dylib then gets an install path that starts with @rpath and is the path to the dylib relative to the anchor point. Each main executable is linked with -rpath @loader_path/zzz, where zzz is the path from the executable to the anchor point. At runtime dyld sets it run path to be the anchor point, then each dylib is found relative to the anchor point.
Вам нужно передать -rpath path/containing/the/library в ld при связывании своего двоичного файла, чтобы указать, где искать при расширении префикса @rpath/ в команде загрузки разделяемой библиотеки. С помощью GHC вы можете использовать аргумент -optl-Wl, чтобы передать флаги до ld, поэтому вы хотите вызвать GHC следующим образом:
ghc --make Main.hs mycbinding.o -ljvm -L<javahome>/jre/lib/server -optl-Wl,-rpath,<javahome>/jre/lib/server -o mybinary