Parrallel compiling with CMake

[o.copleston]

With the old GNU Make build system, compiling my projects with

Code: Select all

make -j8

would drastically reduce my build time from minutes to seconds. How can I do this with the idf.py CMake build system?

[MindReader32]

Hi,

I'd also like to know too please.

Thanks

[renz]

CMake automatically does parallel builds.

Even faster build times can be achieved by using ccache. This can be done by:

1. passing argument `--ccache` to idf.py everytime you build
2. set CCACHE_ENABLE=1 before project() call in project CMakeLists.txt like so

Code: Select all

...
set(CCACHE_ENABLE 1)
project(...)

You need to have ccache installed on your system, however.

[MindReader32]

cool, thanks, ccache is working a treat on macOS using homebrew.