Cannot compile libast.a

[raynalm]

Hello,
I'm trying to install PADS on my laptop (Ubuntu 18.04 64bits, gcc 7.5.0)
I installed the following dependencies:

sudo apt install make libcsfml-dev ml-yacc ml-lpt gcc

Here are the commands I ran:

export PADS_HOME=$HOME/git/pads
. $PADS_HOME/scripts/Q_DO_SETENV.sh
make ast_lib

It returns me the following error message (cropped for lisibility):

./ast_stdio.h:82:15: error: conflicting types for ‘_sfio_FILE’
 #define FILE  _sfio_FILE
               ^
./ast_stdio.h:80:24: note: previous declaration of ‘_sfio_FILE’ was here
 typedef struct _sfio_s _sfio_FILE;
                        ^~~~~~~~~~
mamake [lib/libast]: *** exit code 1 making stdio_gnu.o

What should I do?
Thanks,
best regards.