SocEDS error compiling DE10-Standard examples on ubuntu 20.4

Trying to compile some examples given on the install cd, i obtain this kind of errors whatever the example i try to compile :
tanguy-e@tpinfo4:~$ /usr/local/opt/quartus18/embedded/embedded_command_shell.sh

Intel FPGA Embedded Command Shell

Version 18.1 [Build 625]

tanguy-e@tpinfo4:~/SoC/hps_i2c_switch$ make
arm-linux-gnueabihf-gcc -g -Wall -Dsoc_cv_av -I/usr/local/opt/quartus18/embedded/ip/altera/hps/altera_hps/hwlib/include/soc_cv_av -I/usr/local/opt/quartus18/embedded/ip/altera/hps/altera_hps/hwlib/include/ -c main.c -o main.o
cc1: fatal error: main.c: Valeur trop grande pour le type défini de données
compilation terminated.
make: *** [Makefile:18 : main.o] Erreur 1
tanguy-e@tpinfo4:~/SoC/hps_i2c_switch$ cd …/my_first_hps/
tanguy-e@tpinfo4:~/SoC/my_first_hps$ make
arm-linux-gnueabihf-gcc -g -Wall -Dsoc_cv_av -I/usr/local/opt/quartus18/embedded/ip/altera/hps/altera_hps/hwlib/include/soc_cv_av -I/usr/local/opt/quartus18/embedded/ip/altera/hps/altera_hps/hwlib/include/ -c main.c -o main.o
cc1: fatal error: main.c: Valeur trop grande pour le type défini de données
compilation terminated.
make: *** [Makefile:19 : main.o] Erreur 1

Any idea ?
Thanks
Best regards
Eric

In fact, SocEDS version 18.1 seems to not be compatible with ubuntu 20.4. Using 20.1 version instead solve the problem.
Best regards
Eric