# cmake 4.3.0 no longer builds with openssl 1.1.x

**URL:** https://discourse.cmake.org/t/cmake-4-3-0-no-longer-builds-with-openssl-1-1-x/15567
**Category:** Usage
**Created:** [March 20, 2026, 6:38pm UTC](https://discourse.cmake.org/t/cmake-4-3-0-no-longer-builds-with-openssl-1-1-x/15567 "2026-03-20T18:38:23Z")
**Posts on this page:** 3
**Page:** 1

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### Author: ![Lieven](https://discourse.cmake.org/letter_avatar_proxy/v4/letter/l/c37758/32.png) [@Lieven](https://discourse.cmake.org/u/Lieven)
#### Post date: [March 20, 2026, 6:38pm UTC](https://discourse.cmake.org/t/cmake-4-3-0-no-longer-builds-with-openssl-1-1-x/15567/1 "2026-03-20T18:38:23Z")

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On some older systems, where package managers don’t have openssl 3.x, I can easily build openssl 3.x myself. Is there a way in the bootstrap stage (or later) of building cmake to make it point to that self build location of openssl ?

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### Author: ![ClausKlein](https://discourse.cmake.org/user_avatar/discourse.cmake.org/clausklein/32/352_2.png) [@ClausKlein](https://discourse.cmake.org/u/ClausKlein)
#### Post date: [March 20, 2026, 7:39pm UTC](https://discourse.cmake.org/t/cmake-4-3-0-no-longer-builds-with-openssl-1-1-x/15567/2 "2026-03-20T19:39:13Z")

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do you know why it is deprecated? [https://www.cvedetails.com/version/681118/Openssl-Openssl-1.1.1g.html](https://www.cvedetails.com/version/681118/Openssl-Openssl-1.1.1g.html)

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### Author: ![Lieven](https://discourse.cmake.org/letter_avatar_proxy/v4/letter/l/c37758/32.png) [@Lieven](https://discourse.cmake.org/u/Lieven)
#### Post date: [March 20, 2026, 9:09pm UTC](https://discourse.cmake.org/t/cmake-4-3-0-no-longer-builds-with-openssl-1-1-x/15567/3 "2026-03-20T21:09:27Z")

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I fully agree, with the removal. I have been pushing openssl 3.0x in many places in products where people were using 1.x. But looking at my options, for some old dev systems to see if there is still a way out and get those to cmake 4.3.0.