Parallelize a build process and reduce build time. Given a project directory and a build script (builder.pl), you need to figure out how to parallelize it. builder.pl takes certain inputs and you can configure certain aspects. You can't modify builder.pl, it's essentially a blackbox, although it's open source.

There's a problem though, multiple instances of builder.pl can't output to the same build directory because they will clash and interfere with each other. Ensure that they don't interfere and the resulting output produced in parallel is the same as the output produced without parallelization.

Normal builder.pl run:

~ $ cd project-builder
~/project-builder $ ./bin/builder.pl

Resulting output are in ./build directory

Get help:

~/project-builder $ ./bin/builder.pl -h

builder.pl by default expects the source directory to reside in ./src, relative to the current working directory (ie. $PWD)

• Notable improvement in time
• Parallel builder should not need to take any arguments
• builder.pl should still be used, ie. cannot rewrite builder.pl
• Resulting build directory in project should be same as normal builder.pl run
• Running bin/checker.sh should pass without errors and print Good job!