[igraph] How to build development version?

[Jeff Alstott]

I am trying to build and install the development version of igraph and python-igraph, because I want to use cairocffi instead of pycairo (which has been implemented in the development, but not version 0.7). However, I'm having trouble configuring igraph:

$ls

AUTHORS       configure.ac     debian    igraph_Info.plist.in  INSTALL.WINDOWS  msvc   optional  tests

bootstrap.sh  CONTRIBUTING.md  doc       igraph.pc.in          interfaces       NEWS   README    TODO

ChangeLog     COPYING          examples  include               Makefile.am      nexus  src       tools

$./configure

bash: ./configure: No such file or directory

$chmod +x configure.ac

$./configure.ac

./configure.ac: line 1: syntax error near unexpected token `igraph,'

./configure.ac: line 1: `AC_INIT(igraph, esyscmd([tr -d '\n' < VERSION]), address@hidden)'

What am I missing?