# Problem with cert issue

**URL:** <https://community.letsencrypt.org/t/problem-with-cert-issue/130613>\
**Category:** Help\
**Created:** [August 10, 2020, 8:21am UTC](https://community.letsencrypt.org/t/problem-with-cert-issue/130613 "2020-08-10T08:21:30Z")\
**Posts on this page:** 1\
**Showing post:** 8

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**Author:** ![massimo12](https://avatars.discourse-cdn.com/v4/letter/m/f08c70/32.png) [@massimo12](https://community.letsencrypt.org/u/massimo12)\
**Post date:** [August 12, 2020, 11:35am UTC](https://community.letsencrypt.org/t/problem-with-cert-issue/130613/8 "2020-08-12T11:35:51Z")

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Hi,

i’m using build 1.0.19 that now has issue due to the new klibc libraries, the OS is eCS/AOS  
( [https://www.arcanoae.com/](https://www.arcanoae.com/) )  
uacme client is being ported with GCC and it use klibc to work

we are also unable to recompile version 1.5 since it use an api called “open\_memstream”

checking for open\_memstream… no  
configure: error: uacme requires open\_memstream

from which version UACME is using that api?  
where i can find the code of the latest UACME tool not using “open\_memstream”?

thanks

massimo

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