I am running on Ubuntu 14.04 and I have manually installed curl 7.48 (see question https://stackoverflow.com/questions/36866583/libcurl-not-updated).
I've tried to execute the command:
carlo@carlo-ThinkPad-W541:/usr/bin$ curl -sS https://storage.googleapis.com/kubernetes-release/release/stable.txt curl: (1) Protocol "https" not supported or disabled in libcurl carlo@carlo-ThinkPad-W541:/usr/bin$
So I've done a quick check on the configuration output and it clearly said SSL not supported:
configure: Configured to build curl/libcurl:
curl version: 7.48.0
Host setup: x86_64-unknown-linux-gnu
Install prefix: /usr/local
Compiler: gcc
SSL support: no (--with-{ssl,gnutls,nss,polarssl,mbedtls,cyassl,axtls,winssl,darwinssl} )
So I had a look at this link https://curl.haxx.se/docs/install.html And I've tried different commands:
root@carlo-ThinkPad-W541:~/curl-7.48.0# ./configure --with-ssl
trying to specify where is located my openSSL library:
root@carlo-ThinkPad-W541:~/curl-7.48.0# ./configure --with-ssl=/lib/x86_64-linux-gnu/
setting an env variables:
root@carlo-ThinkPad-W541:~/curl-7.48.0# export LDFLAGS="-L/lib/x86_64-linux-gnu/" root@carlo-ThinkPad-W541:~/curl-7.48.0# ./configure --with-ssl
But nothing seems to work, the result is always the same:
[...]
configure: Configured to build curl/libcurl:
curl version: 7.48.0
Host setup: x86_64-unknown-linux-gnu
Install prefix: /usr/local
Compiler: gcc
SSL support: no (--with-{ssl,gnutls,nss,polarssl,mbedtls,cyassl,axtls,winssl,darwinssl} )
SSH support: no (--with-libssh2)
zlib support: enabled
GSS-API support: no (--with-gssapi)
TLS-SRP support: no (--enable-tls-srp)
resolver: default (--enable-ares / --enable-threaded-resolver)
IPv6 support: enabled
Unix sockets support: enabled
IDN support: no (--with-{libidn,winidn})
Build libcurl: Shared=yes, Static=yes
Built-in manual: enabled
--libcurl option: enabled (--disable-libcurl-option)
Verbose errors: enabled (--disable-verbose)
SSPI support: no (--enable-sspi)
ca cert bundle: /etc/ssl/certs/ca-certificates.crt
ca cert path: no
ca fallback: no
LDAP support: no (--enable-ldap / --with-ldap-lib / --with-lber-lib)
LDAPS support: no (--enable-ldaps)
RTSP support: enabled
RTMP support: no (--with-librtmp)
metalink support: no (--with-libmetalink)
PSL support: no (libpsl not found)
HTTP2 support: disabled (--with-nghttp2)
Protocols: DICT FILE FTP GOPHER HTTP IMAP POP3 RTSP SMTP TELNET TFTP
root@carlo-ThinkPad-W541:~/curl-7.48.0#
