As explained by Daniel on the mailing list:
My plan is to base the http2 work on the nghttp2 library (https://github.com/tatsuhiro-t/nghttp2) [...] HTTP2 will start as a "feature" in libcurl terms and not specifically as a separate protocol.
So first of all you need to install nghttp2 manually[1].
Then you need to explicitly enable HTTP2 support at configure-time with --with-nghttp2
:
./configure --with-nghttp2=/path/to/nghttp2/install/dir [...]
[1]: at the time of writing the README states that it is not packaged in Ubuntu, so you need to build it yourself.
EDIT
Please find below basic instructions to build the library only (not the command line tool) with default options.
To build nghttp2 you first need to install its requirements (as detailed on nghttp2 documentation page):
# To clone the nghttp2 Github repo
yum install git
# Build essentials
yum install gcc
yum install make
yum install automake
yum install libtool
# Required to build the library
yum install pkgconfig
yum install zlib-devel
Once done clone the repo:
git clone https://github.com/tatsuhiro-t/nghttp2.git
cd nghttp2
Build the library as explained here:
autoreconf -i
automake
autoconf
# Note: I assume you want to deploy it under /usr/local
# Feel free to adapt to your needs!
./configure --prefix=/usr/local
make
Then deploy it:
make install
If everything is OK you then need to build libcurl 7.33.0 by taking care to enable nghttp2 with ./configure --with-nghttp2=/usr/local [...]
.
Extras
If you want to build the application programs in addition (nghttp
, ...) you would have to install additional packages before building nghttp2:
yum install openssl-devel
yum install libevent-devel
yum install libxml2-devel
yum install jansson-devel