.NOTPARALLEL!

[ali hagigat]

If we invoke make with -j option and this make invokes another make,
will that option(-j) will be considered for the second make?
The reason is the following:
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.NOTPARALLEL
Any recursively invoked make command will still run recipes in
parallel (unless its makefile also contains this
target). Any prerequisites on this target are ignored.
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The sub-make will run recipes in parallel because of -j for the first
make?(and the first make stops when sub-make is running)