Preprocessing errors on macOS when compiling BerkeleyGW-4.0

[Sergey]

Hello!

I am trying to compile BerkeleyGW on a macOS using Intel oneAPI + MPICH. However, I have encountered preprocessing errors with Fortran files, particularly when using the "FCPP = cpp -C -nostdinc" option. I have also tried "FCPP = icc -E", but this does not work either.

I guess the CPP on macOS is incompatible with BerkeleyGW. Could someone please tell me which preprocessor I should use instead?

Here is my arch.mk file:

# Precompiler options
#
COMPFLAG  = -DINTEL
PARAFLAG  = -DMPI
MATHFLAG  = -DUSESCALAPACK -DUNPACKED -DUSEFFTW3 -DHDF5 -DUSEMR3
# Only uncomment DEBUGFLAG if you need to develop/debug BerkeleyGW.
# The output will be much more verbose, and the code will slow down by ~20%.
#DEBUGFLAG = -DDEBUG

FCPP    = cpp -C -nostdinc
F90free = mpifort
LINK    = mpifort
FOPTS   = -O3
FNOOPTS = $(FOPTS)
MOD_OPT = -module ./
INCFLAG = -I

C_PARAFLAG = -DPARA
C_COMP  = mpicc
CC_COMP = mpicxx
C_LINK  = mpicxx
C_OPTS  = -O3
C_DEBUGFLAG =

REMOVE  = /bin/rm -f

# Libraries
#
FFTWLIB = -Wl,--start-group \
        $(MKLROOT)/lib/libmkl_scalapack_lp64.a \
        $(MKLROOT)/lib/libmkl_intel_lp64.a \
        $(MKLROOT)/lib/libmkl_core.a \
        $(MKLROOT)/lib/libmkl_sequential.a \
        $(MKLROOT)/lib/libmkl_blacs_mpich_lp64.a \
        -Wl,--end-group -lpthread -lm -ldl

FFTWINCLUDE = $(MKLROOT)/include/fftw
LAPACKLIB   = $(FFTWLIB)

HDF5_DIR  = /Users/me/install/hdf5/1.14.6
HDF5_LDIR = $(HDF5_DIR)/lib
HDF5LIB   = $(HDF5_LDIR)/libhdf5hl_fortran.a \
            $(HDF5_LDIR)/libhdf5_hl.a \
            $(HDF5_LDIR)/libhdf5_fortran.a \
            $(HDF5_LDIR)/libhdf5.a -ldl
HDF5INCLUDE = $(HDF5_DIR)/include

PERFORMANCE =
TESTSCRIPT = 

[Mauro Del Ben]

Hi Sergey,

For me it works using GNU cpp-14 installed using homebrew (you can clearly use GNU cpp and still build with intel compiler). Here the line I'm using on my MacBook Pro, macOS Sequoia 15.6.1: 

FCPP = /opt/homebrew/opt/gcc/bin/cpp-14  -C -nostdinc

Best

-M

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[Sergey]

Hi Mauro,

I tried GNU cpp-15 and it worked out! I had to modify the following lines: CPP = cpp-15 -C -P -nostdinc, and FOPTS   = -O3 -free. I also removed the group "-Wl,--start-group" and  "-Wl,--end-group" from FFTWLIB. Trying GNU cpp was a great idea! Thank you!

Best,

Sergey