系统版本是 Centos 6/7 64位。
1、先安装常用的开发环境。
yum groupinstall Development tools
2、编译OpenSSL
1.下载 OpenSSL：
wget https://www.openssl.org/source/openssl-1.0.2l.tar.gz
2.解压 OpenSSL：
tar -xzvf openssl-1.0.2l.tar.gz
3.进入 OpenSSL目录：
cd openssl-1.0.2l
4.配置并编译 OpenSSL：
./config
–shared
make && make install
3、编译配置curl
1.下载 curl 库：
wget https://curl.haxx.se/download/curl-7.55.1.tar.gz
2.解压 curl 库：
tar -xzvf curl-7.55.1.tar.gz
3.进入 curl 目录：
cd curl-7.55.1
4.设置动态库路径:
export LD_LIBRARY_PATH=$LD_LIBRARY_PATH:/usr/local/ssl/lib
5.配置并编译 curl：
./configure
–prefix=/usr/local/curl/ –without-nss –with-ssl=/usr/local/ssl/
make && make install
6.备份默认的 curl 二进制文件
mv /usr/bin/curl /usr/bin/curl.bak
7.做一个新的 curl 软链
ln -s /usr/local/curl/bin/curl /usr/bin/curl
总体的替换到此就完成，可以执行 curl –version 来进行确认。下边是我执行的结果：
curl
7.55.1 (x86_64-pc-linux-gnu) libcurl/7.55.1 OpenSSL/1.0.2l
Release-Date: 2017-08-14
Protocols: dict file ftp ftps gopher http https imap imaps pop3 pop3s rtsp smb
smbs smtp smtps telnet tftp
Features: AsynchDNS IPv6 Largefile NTLM NTLM_WB SSL TLS-SRP UnixSockets
HTTPS-proxy
CentOs 6 64 Bit系统操作实例：
# curl -V
curl 7.19.7 (x86_64-redhat-linux-gnu) libcurl/7.19.7 NSS/3.16.2.3 Basic ECC zlib/1.2.3 libidn/1.18 libssh2/1.4.2
Protocols: tftp ftp telnet dict ldap ldaps http file https ftps scp sftp
Features: GSS-Negotiate IDN IPv6 Largefile NTLM SSL libz
# curl https://curl.haxx.se/download/curl-7.69.1.tar.gz
# tar zxvf curl-7.69.1.tar.gz
# cd curl-7.69.1
# ./configure –prefix=/usr/local/curl/ –without-nss –with-ssl
# make && make install
# /usr/local/curl/bin/curl -V
curl 7.69.1 (x86_64-pc-linux-gnu) libcurl/7.69.1 OpenSSL/1.0.1e-fips zlib/1.2.3
Release-Date: 2020-03-11
Protocols: dict file ftp ftps gopher http https imap imaps pop3 pop3s rtsp smb smbs smtp smtps telnet tftp
Features: AsynchDNS HTTPS-proxy IPv6 Largefile libz NTLM NTLM_WB SSL UnixSockets
# ldd /usr/local/curl/bin/curl
linux-vdso.so.1 => (0x00007ffd0c5bf000)
libcurl.so.4 => /usr/local/curl/lib/libcurl.so.4 (0x00007f6513ab3000)
libssl.so.10 => /usr/lib64/libssl.so.10 (0x00007f6513837000)
libcrypto.so.10 => /usr/lib64/libcrypto.so.10 (0x00007f6513454000)
libz.so.1 => /lib64/libz.so.1 (0x00007f651323e000)
librt.so.1 => /lib64/librt.so.1 (0x00007f6513035000)
libc.so.6 => /lib64/libc.so.6 (0x00007f6512ca1000)
libgssapi_krb5.so.2 => /lib64/libgssapi_krb5.so.2 (0x00007f6512a5d000)
libkrb5.so.3 => /lib64/libkrb5.so.3 (0x00007f6512776000)
libcom_err.so.2 => /lib64/libcom_err.so.2 (0x00007f6512572000)
libk5crypto.so.3 => /lib64/libk5crypto.so.3 (0x00007f6512346000)
libdl.so.2 => /lib64/libdl.so.2 (0x00007f6512141000)
libpthread.so.0 => /lib64/libpthread.so.0 (0x00007f6511f24000)
/lib64/ld-linux-x86-64.so.2 (0x0000564ebdb90000)
libkrb5support.so.0 => /lib64/libkrb5support.so.0 (0x00007f6511d19000)
libkeyutils.so.1 => /lib64/libkeyutils.so.1 (0x00007f6511b15000)
libresolv.so.2 => /lib64/libresolv.so.2 (0x00007f65118fb000)
libselinux.so.1 => /lib64/libselinux.so.1 (0x00007f65116db000)
而此时，系统的
# curl -V
curl 7.19.7 (x86_64-redhat-linux-gnu) libcurl/7.19.7 NSS/3.16.2.3 Basic ECC zlib/1.2.3 libidn/1.18 libssh2/1.4.2
Protocols: tftp ftp telnet dict ldap ldaps http file https ftps scp sftp
Features: GSS-Negotiate IDN IPv6 Largefile NTLM SSL libz
# ldd /usr/bin/curl
linux-vdso.so.1 => (0x00007ffde3fec000)
libcurl.so.4 => /usr/lib64/libcurl.so.4 (0x00007fcbc9064000)
libidn.so.11 => /lib64/libidn.so.11 (0x00007fcbc8e32000)
libldap-2.4.so.2 => /lib64/libldap-2.4.so.2 (0x00007fcbc8be1000)
librt.so.1 => /lib64/librt.so.1 (0x00007fcbc89d9000)
libgssapi_krb5.so.2 => /lib64/libgssapi_krb5.so.2 (0x00007fcbc8795000)
libkrb5.so.3 => /lib64/libkrb5.so.3 (0x00007fcbc84ae000)
libk5crypto.so.3 => /lib64/libk5crypto.so.3 (0x00007fcbc8282000)
libcom_err.so.2 => /lib64/libcom_err.so.2 (0x00007fcbc807e000)
libssl3.so => /usr/lib64/libssl3.so (0x00007fcbc7e3e000)
libsmime3.so => /usr/lib64/libsmime3.so (0x00007fcbc7c12000)
libnss3.so => /usr/lib64/libnss3.so (0x00007fcbc78d3000)
libnssutil3.so => /usr/lib64/libnssutil3.so (0x00007fcbc76a6000)
libplds4.so => /lib64/libplds4.so (0x00007fcbc74a2000)
libplc4.so => /lib64/libplc4.so (0x00007fcbc729d000)
libnspr4.so => /lib64/libnspr4.so (0x00007fcbc705e000)
libpthread.so.0 => /lib64/libpthread.so.0 (0x00007fcbc6e41000)
libdl.so.2 => /lib64/libdl.so.2 (0x00007fcbc6c3d000)
libssh2.so.1 => /usr/lib64/libssh2.so.1 (0x00007fcbc6a14000)
libz.so.1 => /lib64/libz.so.1 (0x00007fcbc67fe000)
libc.so.6 => /lib64/libc.so.6 (0x00007fcbc646a000)
liblber-2.4.so.2 => /lib64/liblber-2.4.so.2 (0x00007fcbc625a000)
libresolv.so.2 => /lib64/libresolv.so.2 (0x00007fcbc6040000)
libsasl2.so.2 => /usr/lib64/libsasl2.so.2 (0x00007fcbc5e26000)
/lib64/ld-linux-x86-64.so.2 (0x000055a80dede000)
libkrb5support.so.0 => /lib64/libkrb5support.so.0 (0x00007fcbc5c1a000)
libkeyutils.so.1 => /lib64/libkeyutils.so.1 (0x00007fcbc5a17000)
libssl.so.10 => /usr/lib64/libssl.so.10 (0x00007fcbc57aa000)
libcrypto.so.10 => /usr/lib64/libcrypto.so.10 (0x00007fcbc53c7000)
libcrypt.so.1 => /lib64/libcrypt.so.1 (0x00007fcbc5190000)
libselinux.so.1 => /lib64/libselinux.so.1 (0x00007fcbc4f70000)
libfreebl3.so => /lib64/libfreebl3.so (0x00007fcbc4cf7000)
# ldd /usr/bin/curl
linux-vdso.so.1 => (0x00007ffd715e1000)
libcurl.so.4 => /usr/lib64/libcurl.so.4 (0x00007efcd84af000)
libidn.so.11 => /lib64/libidn.so.11 (0x00007efcd827d000)
libldap-2.4.so.2 => /lib64/libldap-2.4.so.2 (0x00007efcd802c000)
librt.so.1 => /lib64/librt.so.1 (0x00007efcd7e24000)
libgssapi_krb5.so.2 => /lib64/libgssapi_krb5.so.2 (0x00007efcd7be0000)
libkrb5.so.3 => /lib64/libkrb5.so.3 (0x00007efcd78f9000)
libk5crypto.so.3 => /lib64/libk5crypto.so.3 (0x00007efcd76cd000)
libcom_err.so.2 => /lib64/libcom_err.so.2 (0x00007efcd74c9000)
libssl3.so => /usr/lib64/libssl3.so (0x00007efcd7289000)
libsmime3.so => /usr/lib64/libsmime3.so (0x00007efcd705d000)
libnss3.so => /usr/lib64/libnss3.so (0x00007efcd6d1e000)
libnssutil3.so => /usr/lib64/libnssutil3.so (0x00007efcd6af1000)
libplds4.so => /lib64/libplds4.so (0x00007efcd68ed000)
libplc4.so => /lib64/libplc4.so (0x00007efcd66e8000)
libnspr4.so => /lib64/libnspr4.so (0x00007efcd64a9000)
libpthread.so.0 => /lib64/libpthread.so.0 (0x00007efcd628c000)
libdl.so.2 => /lib64/libdl.so.2 (0x00007efcd6088000)
libssh2.so.1 => /usr/lib64/libssh2.so.1 (0x00007efcd5e5f000)
libz.so.1 => /lib64/libz.so.1 (0x00007efcd5c49000)
libc.so.6 => /lib64/libc.so.6 (0x00007efcd58b5000)
liblber-2.4.so.2 => /lib64/liblber-2.4.so.2 (0x00007efcd56a5000)
libresolv.so.2 => /lib64/libresolv.so.2 (0x00007efcd548b000)
libsasl2.so.2 => /usr/lib64/libsasl2.so.2 (0x00007efcd5271000)
/lib64/ld-linux-x86-64.so.2 (0x00005572fd9ce000)
libkrb5support.so.0 => /lib64/libkrb5support.so.0 (0x00007efcd5065000)
libkeyutils.so.1 => /lib64/libkeyutils.so.1 (0x00007efcd4e62000)
libssl.so.10 => /usr/lib64/libssl.so.10 (0x00007efcd4bf5000)
libcrypto.so.10 => /usr/lib64/libcrypto.so.10 (0x00007efcd4812000)
libcrypt.so.1 => /lib64/libcrypt.so.1 (0x00007efcd45db000)
libselinux.so.1 => /lib64/libselinux.so.1 (0x00007efcd43bb000)
libfreebl3.so => /lib64/libfreebl3.so (0x00007efcd4142000)
# vi .bash_profile
# .bash_profile
# Get the aliases and functions
if [ -f ~/.bashrc ]; then
. ~/.bashrc
fi
# User specific environment and startup programs
PATH=$PATH:$HOME/bin
LD_LIBRARY_PATH=/usr/local/curl/lib
export PATH LD_LIBRARY_PATH
# /usr/bin/curl -V
curl 7.19.7 (x86_64-redhat-linux-gnu) libcurl/7.69.1 OpenSSL/1.0.1e-fips zlib/1.2.3
Protocols: dict file ftp ftps gopher http https imap imaps pop3 pop3s rtsp smb smbs smtp smtps telnet tftp
Features: AsynchDNS IPv6 Largefile NTLM SSL libz
# ldd /usr/bin/curl
linux-vdso.so.1 => (0x00007fff7c777000)
libcurl.so.4 => /usr/local/curl/lib/libcurl.so.4 (0x00007fb5ed9b4000)
libidn.so.11 => /lib64/libidn.so.11 (0x00007fb5ed772000)
libldap-2.4.so.2 => /lib64/libldap-2.4.so.2 (0x00007fb5ed522000)
librt.so.1 => /lib64/librt.so.1 (0x00007fb5ed31a000)
libgssapi_krb5.so.2 => /lib64/libgssapi_krb5.so.2 (0x00007fb5ed0d5000)
libkrb5.so.3 => /lib64/libkrb5.so.3 (0x00007fb5ecdef000)
libk5crypto.so.3 => /lib64/libk5crypto.so.3 (0x00007fb5ecbc3000)
libcom_err.so.2 => /lib64/libcom_err.so.2 (0x00007fb5ec9be000)
libssl3.so => /usr/lib64/libssl3.so (0x00007fb5ec77f000)
libsmime3.so => /usr/lib64/libsmime3.so (0x00007fb5ec553000)
libnss3.so => /usr/lib64/libnss3.so (0x00007fb5ec213000)
libnssutil3.so => /usr/lib64/libnssutil3.so (0x00007fb5ebfe7000)
libplds4.so => /lib64/libplds4.so (0x00007fb5ebde3000)
libplc4.so => /lib64/libplc4.so (0x00007fb5ebbdd000)
libnspr4.so => /lib64/libnspr4.so (0x00007fb5eb99f000)
libpthread.so.0 => /lib64/libpthread.so.0 (0x00007fb5eb782000)
libdl.so.2 => /lib64/libdl.so.2 (0x00007fb5eb57d000)
libssh2.so.1 => /usr/lib64/libssh2.so.1 (0x00007fb5eb355000)
libz.so.1 => /lib64/libz.so.1 (0x00007fb5eb13f000)
libc.so.6 => /lib64/libc.so.6 (0x00007fb5eadaa000)
libssl.so.10 => /usr/lib64/libssl.so.10 (0x00007fb5eab3e000)
libcrypto.so.10 => /usr/lib64/libcrypto.so.10 (0x00007fb5ea75b000)
liblber-2.4.so.2 => /lib64/liblber-2.4.so.2 (0x00007fb5ea54b000)
libresolv.so.2 => /lib64/libresolv.so.2 (0x00007fb5ea331000)
libsasl2.so.2 => /usr/lib64/libsasl2.so.2 (0x00007fb5ea117000)
/lib64/ld-linux-x86-64.so.2 (0x0000564abf25b000)
libkrb5support.so.0 => /lib64/libkrb5support.so.0 (0x00007fb5e9f0b000)
libkeyutils.so.1 => /lib64/libkeyutils.so.1 (0x00007fb5e9d08000)
libcrypt.so.1 => /lib64/libcrypt.so.1 (0x00007fb5e9ad0000)
libselinux.so.1 => /lib64/libselinux.so.1 (0x00007fb5e98b1000)
libfreebl3.so => /lib64/libfreebl3.so (0x00007fb5e9637000)