Library search paths, daemon startupitem and launchd

[Jeremy Lavergne]

It sounds like putting the DYLIB in the launchd.plist entirely avoids this problem for you though.

As Bradley suggested, checkout man launchd.plist for the settings afforded to you through the plist.  If it cannot help you, create a wrapper script that sets up your environment and then launches the binary.

On Jan 25, 2010, at 4:16 PM, Tom Davis wrote:

> Hello,
> 
> I'm trying to write a portfile for iguanaIR (http://iguanaworks.net/projects/IguanaIR). I'm having difficulties starting a daemon using startupitem.executable. When I try to start the daemon with:
> 
> 	sudo launchctl load -w /Library/LaunchDaemons/org.macports.iguanaIR.plist
> 
> igdaemon crashes. Here's part of the CrashReporter log:
> 
> 	Dyld Error Message:
> 	  Library not loaded: libiguanaIR.dylib
> 	  Referenced from: /opt/local/bin/igdaemon
> 	  Reason: image not found
> 
> The libiguanaIR.dylib library is part of the iguanaIR distribution and is in /opt/local/lib after a port install. otool shows that libiguanaIR.dylib is the only library without an absolute path:
> 
> 	Rett:~ tom$ otool -L /opt/local/bin/igdaemon
> 	/opt/local/bin/igdaemon:
> 	/System/Library/Frameworks/CoreFoundation.framework/Versions/A/CoreFoundation (compatibility version 150.0.0, 			current version 550.13.0)
> 	/System/Library/Frameworks/IOKit.framework/Versions/A/IOKit (compatibility version 1.0.0, current version 275.0.0)
> 	libiguanaIR.dylib (compatibility version 1.0.0, current version 1.0.0)
> 	/opt/local/lib/libpopt.0.dylib (compatibility version 1.0.0, current version 1.0.0)
> 	/opt/local/lib/libusb-0.1.4.dylib (compatibility version 9.0.0, current version 9.4.0)
> 	/usr/lib/libSystem.B.dylib (compatibility version 1.0.0, current version 125.0.0)
> 
> I'm guessing this is because it's not linked with the -l switch because libiguanaIR.dylib is not installed at the time igdaemon is built.
> 
> My .profile is setup to search /opt/local/lib for libraries:
> 
> 	Rett:~ tom$ env | grep LIB
> 	DYLD_FALLBACK_LIBRARY_PATH=/opt/local/lib:
> 	LIBRARY_PATH=/opt/local/lib
> 	DYLD_LIBRARY_PATH=/Applications/MATLAB_R2009a.app/bin/mac:/Applications/MATLAB_R2009a.app/sys/os/mac:
> 
> If I run igdaemon from the command line, everything works fine. 
> 
> If I copy libiguanaIR.dylib to /usr/local/lib and use launchctl, everything works fine.  If I add the following lines to org.macports.iguanaIR.plist:
> 
> 	<key>EnvironmentVariables</key>
> 	<dict>
> 	 <key>DYLD_FALLBACK_LIBRARY_PATH</key> <string>/opt/local/lib</string>
> 	 </dict>
> 
> or
> 	<key>WorkingDirectory</key>
> 	<string>/opt/local/lib</string>
> 
> then everything works fine. 
> 
> /Library/LaunchDaemons must be started by sudo, But sudo strips environmental variables such as DYLD_FALLBACK_LIBRARY_PATH for security reasons. 
> 
> So, what is the correct way to get a daemon to search /op/local/lib? Is there a way to add the EnvironmentVariables key to the launchctl plist using portfile settings? 
> 
> Tom
> 
> 
> 
> 
> 
> 
> 
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> macports-dev at lists.macosforge.org
> http://lists.macosforge.org/mailman/listinfo.cgi/macports-dev
> 

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