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So I build openssl

sudo make install
sudo ln -sf /usr/local/ssl/bin/openssl `which openssl`

I build curl

./configure --with-ssl 
make install

OpenSSL looks installed correctly:

openssl version
OpenSSL 1.0.1g 7 Apr 2014

however curl uses old openssl version (1.0.1f instead of 1.0.1g):

curl --version
curl 7.37.0 (x86_64-unknown-linux-gnu) libcurl/7.37.0 OpenSSL/1.0.1f zlib/1.2.8 libidn/1.28 libssh2/1.4.3 librtmp/2.3
Protocols: dict file ftp ftps gopher http https imap imaps ldap ldaps pop3 pop3s rtmp rtsp scp sftp smtp smtps telnet tftp 
Features: IDN IPv6 Largefile NTLM NTLM_WB SSL libz TLS-SRP 

how to make curl use new version?

I want to try the newest versions, because I am fighting with some strange openssl/curl bug #1 #2

Edit: I also tried ./configure --with-ssl=/usr/local/ssl/include/openssl, no success

Edit2: So far I also tried:

  • sudo ./configure --with-ssl --with-libssl-prefix=/usr/local/ssl
  • ./configure --with-ssl=/usr/local/ssl
  • PKG_CONFIG_PATH=/usr/local/ssl/lib/pkgconfig ./configure
  • PKG_CONFIG_PATH=/usr/local/ssl/lib/pkgconfig ./configure --with-ssl
  • PKG_CONFIG_PATH=/usr/local/ssl/lib/pkgconfig ./configure --with-ssl=/usr/local/ssl/include/openssl

no success...

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3 Answers 3

You need to specify the directory where OpenSSL is installed (your symlink is neither necessary nor sufficient)

./configure --with-ssl=/usr/local/ssl

EDIT: Alternatively, you can set your PKG_CONFIG_PATH environment variable (as suggested by ./configure --help):

PKG_CONFIG_PATH=/usr/local/ssl/lib/pkgconfig ./configure

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first option gives me configure: error: OpenSSL libs and/or directories were not found where specified! Please see my edit - there is no error with --with-ssl=/usr/local/ssl/include/openssl but old openssl is used. second option configures curl without HTTPS – Peter Jun 2 '14 at 10:50
I may have gotten the directories slightly wrong, I don't have access to a Linux box right now... Basically, your manual OpenSSL installation put a file openssl.pcsomewhere, you need to point PKG_CONFIG_PATH to the directory where that file is (and make sure you have pkg-config installed, of course). – fkraiem Jun 2 '14 at 11:06
PKG_CONFIG_PATH path is correct, I have pkg-config installed too, but somehow it doesn't work. without --with-ssl there is no HTTPS, with --with-sslit throws error configure: error: OpenSSL libs and/or directories were not found where specified! – Peter Jun 2 '14 at 11:07
Where and how did you install ssl ? Use the correct path. – bodhi.zazen Jun 2 '14 at 15:01
@bodhi.zazen I have install both Ubuntu package from official repositories and compiled openssl in /usr/local/ssl – Peter Jun 5 '14 at 8:25

What I found out, when I was going through the same exercise, is that curl simply can't work with openssl static libraries. It was always searching for dynamic, no matter what I was doing, so eventually I did three things that worked for me

Configured openssl with enable-shared: ./config enable-shared
Configured curl with openssl: ./configure --with-ssl
Used LD_LIBRARY_PATH: LD_LIBRARY_PATH=/usr/local/lib:/usr/local/ssl/lib /usr/local/bin/curl -V

The latter command with -V flag will show the openssl version used by curl. I've added /usr/local/lib to LD_LIBRARY_PATH to make sure that curl uses the right libcurl version.

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This helped me, particularly LD_LIBRARY_PATH which I've added to bash_profile. I did something similar, but instead of the first line, I used export CFLAGS=-fPIC; ./config shared (not enable-shared). For curl, I used --with-ssl=/usr/local/ssl although the path arg may have been redundant. – mahemoff Sep 3 at 10:32
I'm glad it worked for you and yes, path in --with-ssl is redundant, because what you've provided is a default location for the build. – Oleg Gryb Sep 3 at 16:17
sudo apt-get install libssl-dev
./configure --prefix=/usr --libdir=/usr/lib/x86_64-linux-gnu
sudo make
sudo make install

Is all I needed to build curl 7.43 on ubuntu 15.04

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