#squid -v
Squid Cache: Version 3.5.1
Service Name: squid
configure options:  '--prefix=/usr' '--build=x86_64-pc-linux-gnu' '--host=x86_64-pc-linux-gnu' '--mandir=/usr/share/man' '--infodir=/usr/share/info' '--datadir=/usr/share' '--sysconfdir=/etc' '--localstatedir=/var/lib' '--disable-dependency-tracking' '--disable-silent-rules' '--libdir=/usr/lib64' '--sysconfdir=/etc/squid' '--libexecdir=/usr/libexec/squid' '--localstatedir=/var' '--with-pidfile=/run/squid.pid' '--datadir=/usr/share/squid' '--with-logdir=/var/log/squid' '--with-default-user=squid' '--enable-removal-policies=lru,heap' '--enable-storeio=aufs,diskd,rock,ufs' '--enable-disk-io' '--enable-auth-basic=MSNT-multi-domain,NCSA,POP3,getpwnam,SMB,PAM,RADIUS,DB' '--enable-auth-digest=file' '--enable-auth-ntlm=smb_lm' '--enable-auth-negotiate=kerberos,wrapper' '--enable-external-acl-helpers=file_userip,session,unix_group,wbinfo_group' '--enable-log-daemon-helpers' '--enable-url-rewrite-helpers' '--enable-cache-digests' '--enable-delay-pools' '--enable-eui' '--enable-icmp' '--enable-follow-x-forwarded-for' '--with-large-files' '--disable-strict-error-checking' '--disable-arch-native' '--with-libcap' '--enable-ipv6' '--disable-snmp' '--with-openssl' '--with-nettle' '--with-gnutls' '--enable-ssl-crtd' '--disable-ecap' '--disable-esi' '--enable-htcp' '--enable-wccp' '--enable-wccpv2' '--enable-linux-netfilter' '--enable-zph-qos' '--with-netfilter-conntrack' '--with-mit-krb5' '--without-heimdal-krb5' 'build_alias=x86_64-pc-linux-gnu' 'host_alias=x86_64-pc-linux-gnu' 'CC=x86_64-pc-linux-gnu-gcc' 'CFLAGS=-march=native -mtune=native -O2 -pipe' 'LDFLAGS=-Wl,-O1 -Wl,--as-needed' 'CXXFLAGS=-march=native -mtune=native -O2 -pipe' 'PKG_CONFIG_PATH=/usr/lib64/pkgconfig