Compiling OpenSSL

compile Openssl

openssl-3.0.2.tar.gz

Experimental environment

# cat /etc/redhat-release 
CentOS Linux release 7.7.1908 (Core)

1、 Install the dependent package

# yum install gcc
# yum install perl-CPAN 
# yum install perl-YAML perl-Term-ReadLine perl-version perl-libs perl-devel perl-Test-* perl-Pod-* perl-ExtUtils-* perl-CGI

2、 Upload source code package

Official download address ：http://www.openssl.org/

# cd /usr/local/src
# rz -b
# ls /usr/local/src/
openssl-3.0.2.tar.gz

3、 decompression

# pwd
/usr/local/src
# tar xvf openssl-3.0.2.tar.gz

4、 compile && install

# pwd
/usr/local/src
# cd openssl-3.0.2/
# ./Configure --prefix=/opt/openssl 
# make && make install 

5、 Create a soft connection

# ln -sv /opt/openssl/lib64/libssl.so.3 /lib64/libssl.so.3
# ln -sv /opt/openssl/lib64/libcrypto.so.3 /lib64/libcrypto.so.3

6、 Back up and reset the new openssl

# mv /usr/bin/openssl /usr/bin/openssl_old
# ln -sv /opt/openssl/bin/openssl /usr/bin/openssl

7、 verification

# openssl version
OpenSSL 3.0.2 15 Mar 2022 (Library: OpenSSL 3.0.2 15 Mar 2022)