error compiling on raspberry pi 3 with archlinux arm

[lochbika]

Hi there,

I tried to compile it on a raspberry pi (https://aur.archlinux.org/packages/eventlircd). I modified the arch line in the PKGBUILD to armv7h for that. Nevertheless, I get the following error

make[2]: Verzeichnis „/home/alarm/eventlircd/src/eventlircd/src“ wird betreten
gcc -DHAVE_CONFIG_H -I.   -D_FORTIFY_SOURCE=2   -DLIRCD_SOCKET=\"/run/lirc/lircd\" -DEVMAP_DIR=\"/etc/eventlircd.d\" -march=armv7-a -mfloat-abi=hard -mfpu=vfpv3-d16 -O2 -pipe -fstack-protector --param=ssp-buffer-size=4 -flto -fvisibility=hidden -Werror -Wall -Wextra -Wcast-qual -Wfloat-equal -Wformat=2 -Winit-self -Wmissing-include-dirs  -Wstrict-overflow=5 -Wundef -c -o eventlircd-main.o `test -f 'main.c' || echo './'`main.c
main.c: In Funktion »main«:
main.c:100:20: Fehler: diese Anweisung könnte durchfallen [-Werror=implicit-fallthrough=]
                 if (verbose < 3)
                    ^
main.c:108:13: Anmerkung: hier
             case 'f':
             ^~~~
cc1: Alle Warnungen werden als Fehler behandelt

How could I best tackle this?
Cheers

[InuSasha]

see #2
is semantic check in gcc7

[lochbika]

Thanks!