DCW MacOS patch

Problem:
DCW is unable to launch on MacOS platforms with Big Sur (MacOS v11) update.

Error seen:
When ./dcw is executed in a terminal window, following alert window pops up on the screen with message “Failed to create the Java Virtual Machine” and DCW is not launched.

Workaround 2: Manual patching (without any download)

Terminologies: DCW_HOME = Where DCW is been extracted.

• Open terminal window

• Execute command /usr/libexec/java_home -V

• Output similar to following will be seen

  Matching Java Virtual Machines (2):
  11.0.6,x86_64: "JavaSE11.0.6" /Library/Java/JavaVirtualMachines/jdk-11.0.6.jdk/Contents/Home

  1.8.0_251, x86_64: "Java SE 8" /Library/Java/JavaVirtualMachines/jdk1.8.0_251.jdk/Contents/Home/ /Library/Java/JavaVirtualMachines/jdk-11.0.6.jdk/Contents/Home

• Copy the path which starts with /Library/Java/JavaVirtualMachines
  In above case it will be, /Library/Java/JavaVirtualMachines/jdk-11.0.6.jdk/Contents/Home

• Now traverse to that path then go to bin and check if file named as “java” exists Path should look like below

  ls /Library/Java/JavaVirtualMachines/jdk-11.0.6.jdk/Contents/Home/bin/java

• Copy this path to clipboard.

• Go to DCW_HOME

• Open file named as dcw in an editor

• Go to line number 3 which have content like ./dcw

• Append java_home text with below argument

  Before change line number 3:

  ./dcw

  After change line number 3:

  ./dcw -vm <step_1_copied_text>/bin/java

  Should looks like this

  ./dcw -vm /Library/Java/JavaVirtualMachines/jdk<version>.jdk/Contents/Home/bin/java

• Save the file.

• Run DCW with command ./dcw