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Scons using Pure Python Lang. No more DSL. https://scons.org/

It has cache facility to speed up re-builds. scons --implicit-cache I heard people say, Scons is slow, but it need not be if we use cache facility.

Some people say Meson (https://mesonbuild.com/) would be its successor, but I use scons for building my C/Python files. (ex: Python to .mpy files, asciidoc to pdf, html etc)

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Here I found an opinionated, but still very descriptive comparison of build tools the authors of SCons have experienced. https://github.com/SCons/scons/wiki/FromMakeToScons

I used to swear by scons but it really collapses under its own weight when projects become larger.

At my work we used it for a fairly large source tree and no-change incremental builds would take a good minute for scons to figure out there's nothing to do.

These days we use something based on google blueprint which generates ninja build files.

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