<![CDATA[Build QtOpcUa with OpenSSL return fatal error: openssl/asn1.h]]>Hello,

I'm trying to build QtOpcUa for Qt 5.14.1 Unfortunately mingw32 shows an error fatal error: openssl/asn1.h: No such file or directory. I just downloaded OpenSSL toolkit via Qt maintanance tool.

I was also trying to add includepath in qmake like here https://forum.qt.io/topic/112439/compile-error-fatal but it doesn`t work for me. Do you have any ideas what can i do in these case?

]]>https://forum.qt.io/topic/112932/build-qtopcua-with-openssl-return-fatal-error-openssl-asn1-hRSS for NodeMon, 15 Jun 2026 10:44:23 GMTWed, 25 Mar 2020 14:20:03 GMT60<![CDATA[Reply to Build QtOpcUa with OpenSSL return fatal error: openssl/asn1.h on Sat, 03 Apr 2021 11:19:57 GMT]]>Hi sir now am facing OPC installation on qt 5.14.0.
Error :openssl/asn1.h file not found
I changed in qmake config also as per ur suggestion still same error throwing can u help me to solve this issue

]]>https://forum.qt.io/post/653065https://forum.qt.io/post/653065Sat, 03 Apr 2021 11:19:57 GMT<![CDATA[Reply to Build QtOpcUa with OpenSSL return fatal error: openssl/asn1.h on Wed, 03 Jun 2020 19:23:24 GMT]]>Ok I solved it :)

After doing qmake command you need to edit qmake config file and add INCLUDE+="path/to/openssl". That's will make this lib available for build process.

For this version i also got problem with executing mingw32-make install .
To fix that you need copy files manualy to QDIR folder.

]]>https://forum.qt.io/post/598831https://forum.qt.io/post/598831Wed, 03 Jun 2020 19:23:24 GMT