I run ./simfactory/bin/sim -j2 --thornlist ../einsteintoolkit.th in orde to build the toolkit but get responses

There were 57 errors during execution of the CST
These must be corrected before compilation can proceed

Warnings were generated during execution of the CST

CST error in /home/zhaodingyi/Cactus/lib/sbin/CST (at 322)
-> Missing thorn ExternalLibraries/FFTW3

CST error in /home/zhaodingyi/Cactus/lib/sbin/CST (at 322)
-> Missing thorn ExternalLibraries/GSL

…

/home/zhaodingyi/Cactus/lib/make/make.configuration:212: recipe for target '/home/zhaodingyi/Cactus/configs/sim/config-data/make.thornlist' failed
make[1]: *** [/home/zhaodingyi/Cactus/configs/sim/config-data/make.thornlist] Error 1
Makefile:260: recipe for target 'sim' failed
make: *** [sim] Error 2

It seems I have missed some thorns but I do not know how to install them correctly！

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Ticket URL: https://bitbucket.org/einsteintoolkit/tickets/issues/2535/et_2020_11-build-issue