using intel compiler only

intel mkl and intel mpi
may use arch/Linux-x86-64-intel-minimal.psmp
make -j 10 ARCH=Linux-x86064-intel-minimal.psmp
if system gcc is too old, we can couple new gcc with intel compiler
- CC = mpiicc -qopenmpp -gcc-name=/opt/gcc/5.3/bin/gcc
- FC = mpiifort -qopenmp -gcc-name=/opt/gcc/5.3/bin/gcc

coupling with libint

This is for HF-style XC
Download customized libint source from https://github.com/cp2k/libint-cp2k/releases/tag/v2.6.0
Only one type of lmax can be installed
Prepare a new source pack of cp2k
Unpack libint source at cp2k/tools/toolchain/install
Update arch/custom.psmp with LIBINT info. Refer other arch files as samples
- LIBINT configuration must be in the head of custom.psmp, prior to mpicc or CC
make command is same as above

Use mpich. mvapich2 seems not working
install fftw from source. Add --enable-mpi --enable-openmp
install lapack/blas with static library
install scalapack library using cmake. Add -fPIC into CFLAGS and FFLAGS
install libint with selcted lmax value. May need recent cmake
When making arch/custom.psmp, add fftw and scalapack. In the end, add liblapack.a and libblas.a to LIB
- lapack lib may not find blas library. then LIB += /.../libblas.a /..../liblapack.a /.../libbas.a -lz -ldl -lstdc++
- Repeat libblas.a
For fortran flags, -fallow-argument-mismatch might be necessary for gfortran > 10.x