jconsole already has tried hard to find the absolute path of itself. For mac, it calls _NSGetExecutablePath in jeload.c , you may debug to find why it failed to load libj.dylib. if the result from the function call is correct, then it should a security issue or bundle cannot be accessed as a normal file system.
On 26 Apr, 2017 9:51 am, "Ian Clark" <[email protected]> wrote: > Thanks, @Bill. I looked for a man-file and searched the wiki but overlooked > the user manual. > > @Eric - thanks, that may solve my problem. > > Is it a "real" problem? Yes. > > Do I really need it – for the end-user? Maybe / maybe not. > > I'm trying to embed jconsole directly in a Mac app, to simplify > distribution to non-J-experts. Currently I need to instruct the customer to > install J, and the app launches jconsole via a fixed absolute > path: /Applications/j64-805/bin/jconsole > > I could solve the problem with a fully-fledged installer, but I'd rather > offer a single monolithic app which can simply be downloaded and run from > anywhere. > > An app is really a disguised folder called a "bundle". Apart from that, it > acts like an ordinary folder for most purposes… > Except for libj.dylib (ideally needs to go in the bundle too), which Xcode > is being unexpectedly awkward about, in ways I don't fully understand. > Everything I've tried so far gets defeated: jconsole runs with a command > line but reports it can't find its dylib, even though I copy it to the same > directory inside the bundle. I suspect it's yet another ad-hoc security > band-aid from Apple. > > I reason that if I actually tell jconsole where libj.dylib is (…the one I > want it to use), that might fix it. Will report back when I've made sense > of what works and what doesn't. There's a raft of things to try. > > > On Wed, Apr 26, 2017 at 12:35 AM, Eric Iverson <[email protected]> > wrote: > > > A recent (806) change to jconsole added an undocumented new parameter: > -lib > > path/jlib.dylib > > > > It is undocumented because I figured it should only be used in special > > development circumstances. It would be interesting if you have a real use > > case for normal use. > > > > On Tue, Apr 25, 2017 at 6:15 PM, Ian Clark <[email protected]> > wrote: > > > > > OS X questions... > > > > > > On what default path does jconsole expect to find libj.dylib ? > > > > > > Can the actual path be specified as a command line argument to > jconsole? > > > > > > Where can I find a list of permissible command line arguments for > > jconsole? > > > ---------------------------------------------------------------------- > > > For information about J forums see http://www.jsoftware.com/forums.htm > > ---------------------------------------------------------------------- > > For information about J forums see http://www.jsoftware.com/forums.htm > > > ---------------------------------------------------------------------- > For information about J forums see http://www.jsoftware.com/forums.htm ---------------------------------------------------------------------- For information about J forums see http://www.jsoftware.com/forums.htm
