...get JLink to work on Mac OS X

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Jon Elliott

• June 29, 2012 15:30

UPDATE:  The steps described in this article are not required if using version 4.70 or later of the J-Link software & documentation pack for MAC as it is no longer dependent on the libusb library. All you should need to do is set the 'J-Link > J-Link DLL File' target property to point to the libjlinkarm.4.dylib file contained in the pack.

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NOTE: This article applies to CrossWorks for ARM version 2.3 onwards. J-Link is not supported in the Mac OS version of CrossWorks prior to version 2.3.

1. Download the J-Link software & documentation pack for MAC from http://www.segger.com/jlink-software.html, open the .dmg file and copy the contents onto your hard drive.
2. Download and install macports from http://www.macports.org if you have not done so already.
3. Install libusb by running 'sudo port install libusb +universal' from the command line (make sure you have the +universal option so you get both 32-bit and 64-bit versions of libusb).
4. Start CrossStudio with the DYLD_LIBRARY_PATH environment variable set to include the directory containing the libusb library you just installed (/opt/local/lib). To do this:
• Open a terminal and run the command 'export DYLD_LIBRARY_PATH=/opt/local/lib:$DYLD_LIBRARY_PATH' then start CrossStudio from the command line by running '/Applications/CrossWorks for ARM 2.3/CrossStudio for ARM 2.3.app/Contents/MacOS/crossstudio'.
5. In CrossStudio, set the 'J-Link > J-Link DLL File' target property to point to the libjlinkarm.4.dylib file you installed in step 1.

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  Tomas Nordström

  • November 06, 2012 11:38

  If you are using brew (http://mxcl.github.com/homebrew/) the command to compile universal is "brew install --universal libusb" and the library is then normally installed in /usr/local/Cellar/libusb/VERSION/lib/ where VERSION currently is 1.0.9.

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  Robert Rau

  • February 11, 2013 23:29

  Attached is a AppleScript app to run Terminal and enter the two commands above. Just a simple convenience so it can be put in your dock.

  Script:

  tell application "Terminal"

  activate

  my execCmd("export DYLD_LIBRARY_PATH=/opt/local/lib:$DYLD_LIBRARY_PATH", 1)

  my execCmd("'/Applications/CrossWorks for ARM 2.3/CrossStudio for ARM 2.3.app/Contents/MacOS/crossstudio'", 0)

  end tell

   

  on execCmd(cmd, wait)

  tell application "System Events"

  tell application process "Terminal"

  set frontmost to true

  keystroke cmd

  keystroke return

  end tell

  end tell

  delay wait

  end execCmd

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  Rajesh

  • April 04, 2013 23:16

  Hi, I am trying to use segger J-Link edu version on the mac, and I have followed the above instructions however when ever i am trying to connect jLink i am getting "Cannot access ~/segger/libjlinkarm.4.dylib" error message. Any thoughts on this error? 

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  Robert Rau

  • May 18, 2013 16:06

  Rajesh, did you get it working? It sounds like your

  export DYLD_LIBRARY_PATH=/opt/local/lib:$DYLD_LIBRARY_PATH

  may not have worked.

  You must have your default shell set to bash for the export to work (set this by System Preferences -> Users & Groups -> make sure you are unlocked -> right click on yourself -> Advanced Options -> Login Shell)

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  Rajesh Gali

  • May 18, 2013 18:30

  Robert, yes it is working fine..

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