Hi,
Is there anyone who tried compiling VPP with GCC 7?
There's fall-through warning from DPDK code, but there's already FALLTHROUGH
comments in DPDK code to suppress the warning and -Wimplicit-fallthrough=2 in
DPDK makefile, but somehow I'm still getting the warnings when compiling VPP.
I have to add an option of -Wimplicit-fallthrough=0 or
-Wno-implicit-fallthrough to get the compiling pass, but it seems unreasonable.
gcc -Wp,-MD,./.ark_ethdev_rx.o.d.tmp -pie -fPIC -pthread
-march=armv8-a+crc+crypto -DRTE_MACHINE_CPUFLAG_NEON
-DRTE_MACHINE_CPUFLAG_CRC32 -DRTE_MACHINE_CPUFLAG_AES
-DRTE_MACHINE_CPUFLAG_PMULL -DRTE_MACHINE_CPUFLAG_SHA1
-DRTE_MACHINE_CPUFLAG_SHA2
-I/home/lijian/dpdk/vpp/build-root/build-vpp-native/dpdk/dpdk-18.05/arm64-armv8a-linuxapp-gcc/include
-include
/home/lijian/dpdk/vpp/build-root/build-vpp-native/dpdk/dpdk-18.05/arm64-armv8a-linuxapp-gcc/include/rte_config.h
-O3 -I./ -W -Wall -Wstrict-prototypes -Wmissing-prototypes
-Wmissing-declarations -Wold-style-definition -Wpointer-arith -Wcast-align
-Wnested-externs -Wcast-qual -Wformat-nonliteral -Wformat-security -Wundef
-Wwrite-strings -Wdeprecated -Wimplicit-fallthrough=2 -Wno-format-truncation
-Werror -Wimplicit-fallthrough=2 -g -mtune=generic -Wimplicit-fallthrough=1
-save-temps -o ark_ethdev_rx.o -c
/home/lijian/dpdk/vpp/build-root/build-vpp-native/dpdk/dpdk-18.05/drivers/net/ark/ark_ethdev_rx.c
/home/lijian/dpdk/vpp/build-root/build-vpp-native/dpdk/dpdk-18.05/drivers/net/ark/ark_ethdev_rx.c:
In function 'eth_ark_rx_seed_mbufs':
/home/lijian/dpdk/vpp/build-root/build-vpp-native/dpdk/dpdk-18.05/drivers/net/ark/ark_ethdev_rx.c:503:9:
error: this statement may fall through [-Werror=implicit-fallthrough=]
count++;
~~~~~^~
/home/lijian/dpdk/vpp/build-root/build-vpp-native/dpdk/dpdk-18.05/drivers/net/ark/ark_ethdev_rx.c:505:2:
note: here
case 3:
^~~~
/home/lijian/dpdk/vpp/build-root/build-vpp-native/dpdk/dpdk-18.05/drivers/net/ark/ark_ethdev_rx.c:508:8:
error: this statement may fall through [-Werror=implicit-fallthrough=]
count++;
~~~~~^~
/home/lijian/dpdk/vpp/build-root/build-vpp-native/dpdk/dpdk-18.05/drivers/net/ark/ark_ethdev_rx.c:510:2:
note: here
case 2:
^~~~
/home/lijian/dpdk/vpp/build-root/build-vpp-native/dpdk/dpdk-18.05/drivers/net/ark/ark_ethdev_rx.c:513:8:
error: this statement may fall through [-Werror=implicit-fallthrough=]
count++;
~~~~~^~
/home/lijian/dpdk/vpp/build-root/build-vpp-native/dpdk/dpdk-18.05/drivers/net/ark/ark_ethdev_rx.c:515:2:
note: here
case 1:
^~~~
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