# \#install

**URL:** https://swi-prolog.discourse.group/tag/install/198.md

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## [Can't build on Ubuntu](https://swi-prolog.discourse.group/t/cant-build-on-ubuntu/9257)

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**Author:** [@CarlosLang](https://swi-prolog.discourse.group/u/CarlosLang)\
**Replies:** 6\
**Last updated:** [September 9, 2025, 9:40am UTC](https://swi-prolog.discourse.group/t/cant-build-on-ubuntu/9257 "2025-09-09T09:40:42Z")

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Right after cloning the latest swipl-devel repo, following CMAKE.md, I did cd swipl-devel mkdir build cd build cmake -G Ninja .. Which produced the following error messages CMake Error: CMake was unabl…

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## [Support precompiled (.qlf) libraries](https://swi-prolog.discourse.group/t/support-precompiled-qlf-libraries/8887)

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**Author:** [@jan](https://swi-prolog.discourse.group/u/jan)\
**Replies:** 5\
**Last updated:** [April 29, 2025, 6:44am UTC](https://swi-prolog.discourse.group/t/support-precompiled-qlf-libraries/8887 "2025-04-29T06:44:18Z")

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I’ve pushed a lot of patches to facilitate compiling the entire library to .qlf (Quick Load Format\` files. This was proposed by @maren. Thanks! This has several advantages .qlf files load about 20 times faster. …