[Interest] Qt5.15 from source on centOS 7

[Mike Rochefort]

On 6/22/22 12:43 PM, Thiago Macieira wrote:
> See config.log and find out why "feature.ssl" failed.

In addition to this, it's worth noting the OpenSSL availability on EL7. 
Only OpenSSL 1.0 is shipped by Red Hat and the rebuild distributions for 
development against (there is the compatibility openssl098e package, but 
it's only for runtime use). OpenSSL 1.1 is provided via EPEL.

packages:
openssl11
openssl11-libs
openssl11-devel

development resources:
/usr/include/openssl11/*
/usr/lib64/openssl11/lib{ssl,crypto}.so
/usr/lib64/pkgconfig/{libssl,libcrypto,openssl}11.pc

The build system is likely not seeing the "openssl11" content (double 
check you have the openssl11-devel package installed) and may need to be 
modified to find it properly rather than seeking "openssl". You could 
also make sure you have openssl-devel removed and symlink the *11.pc 
files to their counterparts and see if that helps pick things up.

yum remove openssl-devel
cd /usr/lib64/pkgconfig
ln -s libcrypto11.pc libcrypto.pc
ln -s libssl11.pc libssl.pc
ln -s openssl11.pc openssl.pc

Cheers,
Mike