compile error with gcc + MPICH

[wyfSunflower]

make MPICXX=mpic++ CXX=g++
mpic++ -cxx=g++ -fopenmp --std=c++11 -I/usr/include/mpi/ -I./include -I./include/GMDP -O3 -flto -fwhole-program -march=native -o bin/BFS src/BFS.cpp -lboost_serialization
g++: error: unrecognized command-line option ‘-cxx=g++’
make: *** [Makefile:54: bin/BFS] Error 1

[wyfSunflower]

os: ubuntu 22.04

g++ --version
g++ (Ubuntu 11.3.0-1ubuntu1~22.04.1) 11.3.0
Copyright (C) 2021 Free Software Foundation, Inc.
This is free software; see the source for copying conditions. There is NO
warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.

mpichversion
MPICH Version: 4.0
MPICH Release date: Fri Jan 21 10:42:29 CST 2022
MPICH Device: ch4:ofi
MPICH configure: --build=x86_64-linux-gnu --prefix=/usr --includedir=${prefix}/include --mandir=${prefix}/share/man --infodir=${prefix}/share/info --sysconfdir=/etc --localstatedir=/var --disable-option-checking --disable-silent-rules --libdir=${prefix}/lib/x86_64-linux-gnu --runstatedir=/run --disable-maintainer-mode --disable-dependency-tracking --with-libfabric=/usr --with-slurm=/usr --with-device=ch4:ofi --with-pm=hydra --with-hwloc-prefix=/usr --with-wrapper-dl-type=none --enable-shared --without-yaksa --prefix=/usr --enable-fortran=all --disable-rpath --disable-wrapper-rpath --sysconfdir=/etc/mpich --libdir=/usr/lib/x86_64-linux-gnu --includedir=/usr/include/x86_64-linux-gnu/mpich --docdir=/usr/share/doc/mpich CPPFLAGS= CFLAGS= CXXFLAGS= FFLAGS=-O2 -ffile-prefix-map=/build/mpich-0xgrG5/mpich-4.0=. -flto=auto -ffat-lto-objects -flto=auto -ffat-lto-objects -fstack-protector-strong -fallow-invalid-boz -fallow-argument-mismatch FCFLAGS=-O2 -ffile-prefix-map=/build/mpich-0xgrG5/mpich-4.0=. -flto=auto -ffat-lto-objects -flto=auto -ffat-lto-objects -fstack-protector-strong -fallow-invalid-boz -fallow-argument-mismatch BASH_SHELL=/bin/bash
MPICH CC: gcc -g -O2 -ffile-prefix-map=/build/mpich-0xgrG5/mpich-4.0=. -flto=auto -ffat-lto-objects -flto=auto -ffat-lto-objects -fstack-protector-strong -Wformat -Werror=format-security -O2
MPICH CXX: g++ -g -O2 -ffile-prefix-map=/build/mpich-0xgrG5/mpich-4.0=. -flto=auto -ffat-lto-objects -flto=auto -ffat-lto-objects -fstack-protector-strong -Wformat -Werror=format-security -O2
MPICH F77: gfortran -O2 -ffile-prefix-map=/build/mpich-0xgrG5/mpich-4.0=. -flto=auto -ffat-lto-objects -flto=auto -ffat-lto-objects -fstack-protector-strong -fallow-invalid-boz -fallow-argument-mismatch -g -O2 -ffile-prefix-map=/build/mpich-0xgrG5/mpich-4.0=. -flto=auto -ffat-lto-objects -flto=auto -ffat-lto-objects -fstack-protector-strong -cpp -fallow-invalid-boz -fallow-argument-mismatch -O2
MPICH FC: gfortran -O2 -ffile-prefix-map=/build/mpich-0xgrG5/mpich-4.0=. -flto=auto -ffat-lto-objects -flto=auto -ffat-lto-objects -fstack-protector-strong -fallow-invalid-boz -fallow-argument-mismatch -g -O2 -ffile-prefix-map=/build/mpich-0xgrG5/mpich-4.0=. -flto=auto -ffat-lto-objects -flto=auto -ffat-lto-objects -fstack-protector-strong -cpp -fallow-invalid-boz -fallow-argument-mismatch -O2
MPICH Custom Information:

dpkg -l | grep boost
ii libboost-all-dev 1.74.0.3ubuntu7 amd64 Boost C++ Libraries development files (ALL) (default version)
ii libboost-atomic-dev:amd64 1.74.0.3ubuntu7 amd64 atomic data types, operations, and memory ordering constraints (default version)
ii libboost-atomic1.74-dev:amd64 1.74.0-14ubuntu3 amd64 atomic data types, operations, and memory ordering constraints
ii libboost-atomic1.74.0:amd64 1.74.0-14ubuntu3 amd64 atomic data types, operations, and memory ordering constraints
ii libboost-chrono-dev:amd64 1.74.0.3ubuntu7 amd64 C++ representation of time duration, time point, and clocks (default version)