Cómo arreglar Libffi Falta en MacOS
# Add this in your .bash_profile.
export PKG_CONFIG_PATH="${PKG_CONFIG_PATH}:/usr/local/opt/libffi/lib/pkgconfig"
Graceful Gull
# Add this in your .bash_profile.
export PKG_CONFIG_PATH="${PKG_CONFIG_PATH}:/usr/local/opt/libffi/lib/pkgconfig"