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0 pointsSchizoDuckie12y ago0 comments

I'm not familiar with the -j4 argument. (something with debug info?)

Also, what your example looks like voodoo. Could you explain what the parameters do?

On top of that, tools like uglifyjs still run on NPM/Node afaik.

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3 comments · 3 top-level

-j4 says use up to 4 processes in parallel. Make has a jobserver that does parallelism safely with respect to the dependency graph. So for example, even if we have workers to spare, it won't try to build all.min.js until all of the .ugly files have finished building.

The %.foo : %.bar things are pattern rules. [1]

The $<, $@, and $^ things are called automatic variables. [2] They correspond to the first input file for a rule, the target file for a rule, and the complete list of input files for a rule, respectively. Cryptic at first but really handy.

There's a standalone script for UglifyJS. [3]

[1] https://www.gnu.org/software/make/manual/html_node/Pattern-M...

[2] https://www.gnu.org/software/make/manual/html_node/Automatic...

[3] https://github.com/mishoo/UglifyJS2/blob/master/bin/uglifyjs

dap12y ago

This is Make 001: $@ is your output file, $^ are your inputs (prerequisites, technically), and $< is your first input file. They're unfortunately ungoogleable, but just remember that they're called "Automatic variables" in the GNU make documentation.

"-j4" means to run up to 4 jobs in parallel. It's orthogonal to the issues at hand.

ripter12y ago

http://www.gnu.org/software/make/manual/make.html#Automatic-...

The manual is actually pretty good. I've only started to dig my teeth into make.

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