Failed to configure: cpp failed sanity check

[HowieForrest]

What version of shadowsocks-libev are you using?

3.2.5

What operating system are you using?

CentOS 7
4.14.129-bbrplus
gcc version 4.8.5 20150623 (Red Hat 4.8.5-44) (GCC)
gcc-c++ installed

What did you do?

Tried to update shadowsocks-libev by building it again

yum install gcc gettext autoconf libtool automake make pcre-devel asciidoc xmlto c-ares-devel libev-devel libsodium-devel mbedtls-devel -y
git clone https://github.com/shadowsocks/shadowsocks-libev.git
cd shadowsocks-libev
git submodule update --init --recursive
./autogen.sh
./configure CPP=/usr/bin/cpp --disable-documentation

What did you expect to see?

shadowsocks-libev built successfully and updated to 3.3.5

What did you see instead?

checking for gcc... gcc
checking whether the C compiler works... yes
checking for C compiler default output file name... a.out
checking for suffix of executables...
checking whether we are cross compiling... no
checking for suffix of object files... o
checking whether we are using the GNU C compiler... yes
checking whether gcc accepts -g... yes
checking for gcc option to accept ISO C89... none needed
checking how to run the C preprocessor... /usr/bin/cpp
configure: error: in `/root/build/shadowsocks-libev':
configure: error: C preprocessor "/usr/bin/cpp" fails sanity check

What is your config in detail (with all sensitive info masked)?

{
"server":["[::0]","0.0.0.0"],
"server_port":2***,
"password":"********",
"timeout":300,
"user":"nobody",
"method":"aes-256-gcm",
"fast_open":false,
"nameserver":"8.8.8.8",
"mode":"tcp_and_udp",
"plugin":"obfs-server",
"plugin_opts":"obfs=http"
}

[HowieForrest]

Problem solved with sudo yum update -y