Installation fails on OSX - libffi

[lctrt]

I am following the installation process described in the wiki, using homebrew, but I am getting the following error :

ValueError: running 'pkg-config libffi --cflags-only-I' failed:
Package libffi was not found in the pkg-config search path.
Perhaps you should add the directory containing `libffi.pc'
to the PKG_CONFIG_PATH environment variable
No package 'libffi' found
and the default ['/usr/include/ffi'] is not a valid directory
make: *** [build_with_jit] Error 1

I am using OSX El Capitan 10.11.1, I think it has to be related to '/usr/include' not being a folder anymore, but brew install libffi doesn't create a libffi.pc file anyway.

Any idea to solve this?

Cheers!

[alekcz]

I built pixie today on OSX 10.11.4. See #491 and check out the updates on the wiki. Between the two of them you should come right. If not just give me a shout

[lgouger]

I've seen this error while building when libffi was installed using brew.

I resolved this build issue by setting the 'PKG_CONFIG_PATH' environment variable based on information from brew info libffi

Portable Foreign Function Interface library
https://sourceware.org/libffi/
/usr/local/Cellar/libffi/3.0.13 (15 files, 374.5KB)
  Poured from bottle on 2016-07-21 at 14:50:28
/usr/local/Cellar/libffi/3.2.1 (16 files, 296.9KB)
  Poured from bottle on 2017-03-13 at 08:38:55
From: https://github.com/Homebrew/homebrew-core/blob/master/Formula/libffi.rb
==> Caveats
This formula is keg-only, which means it was not symlinked into /usr/local,
because some formulae require a newer version of libffi.

For compilers to find this software you may need to set:
    LDFLAGS:  -L/usr/local/opt/libffi/lib
For pkg-config to find this software you may need to set:
    PKG_CONFIG_PATH: /usr/local/opt/libffi/lib/pkgconfig

so for me
export PKG_CONFIG_PATH='/usr/local/opt/libffi/lib/pkgconfig'