# ZCU111 Build Problems

**URL:** <https://discuss.pynq.io/t/zcu111-build-problems/3855>\
**Category:** Support\
**Created:** [March 16, 2022, 5:59pm UTC](https://discuss.pynq.io/t/zcu111-build-problems/3855 "2022-03-16T17:59:14Z")\
**Posts on this page:** 1\
**Showing post:** 12

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**Author:** ![skalade](https://sea1.discourse-cdn.com/flex019/user_avatar/discuss.pynq.io/skalade/32/686_2.png) [@skalade](https://discuss.pynq.io/u/skalade)\
**Post date:** [March 20, 2022, 7:44pm UTC](https://discuss.pynq.io/t/zcu111-build-problems/3855/12 "2022-03-20T19:44:48Z")

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Hi Jeff,

It seems like your build crashes because your VM is running out of memory (looking up the crash message you’re seeing is discussed [here](https://discuss.pynq.io/t/problems-getting-build-system-up-and-running/665) and [here](https://discuss.tvm.apache.org/t/line-286-3082-killed-rdi-prog/9303), where the solution was to add more swap/ram space.

Unfortunately some of the bitstreams for the Z2 have to be built as part of the pynq package (it happens [in this script](https://github.com/Xilinx/PYNQ/blob/master/build.sh)). You don’t have to rebuild the Pynq-Z1 and ZCU104 bitstreams however by providing the prebuilt sdist with the PYNQ\_SDIST flag.

Thanks  
Shawn

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