Extra Dependency Needed for Plone 5.2.1 on Ubuntu 20.04

[ronchi]

Installing Plone 5.2.1 on Ubuntu 20.04 is possible, but requires at least one extra dependency that is not one of the normal dependencies for earlier versions of Ubuntu.

As a test case, I installed Plone 5.2.1 using the Unified Installer on the most-up-to-date version of Ubuntu 20.04 (as of April 8, 2020). Initially, I included the following dependencies before attempting an install:

sudo apt install libz-dev libjpeg-dev libssl-dev libxml2-dev libreadline-dev wv python3-pil-dev libxslt1-dev

... and then ran the install.sh script. It failed because a particular header file (ffi.h) was not found. Consequently, I added:

sudo apt install libffi-dev

... and re-ran the install.sh script. Success!

If possible, could you incorporate the requirement of libffi-dev into the install script? Incidentally, I have not tested older versions of Plone on Ubuntu 20.04, so I'm not sure if this extra dependency is version-specific.

[jensens]

Github Actions tests are passing now on Ubuntu latest. So I guess this one is no longer valid/fixed. Please reopen if I am wrong.

[gnafou]

well i don't know if it fits here ...
when trying to install 5.2.4 on debian buster , i had to install python3.8 ( seems that the --build-python vanished :-( )
but installing python without the libffi-dev package makes the plone installer fail

[nanoav]

Same errors for me:
cffi_backend.c:15:10: fatal error: ffi.h: No such file or directory
15 | #include <ffi.h>

in Debian 11 installing with Plone-5.2.5-UnifiedInstaller-1.0, and minimal 5.2.5 install without UnifiedInstaller.

After installing libffi-dev Plone successfully installed