[petsc-users] makefile for building application with petsc

[Satish Balay]

BTW: Here is a simple makefile for multiple sources.

>>>>
balay at sb /home/balay/tmp/prj/src
$ ls
main.cxx  makefile  sub.cxx
balay at sb /home/balay/tmp/prj/src
$ ls ../inc/
mainc.h
balay at sb /home/balay/tmp/prj/src
$ cat makefile 
all: main

CXXPPFLAGS       = -I../inc
LDLIBS           = -lmv

include ${PETSC_DIR}/lib/petsc/conf/variables
include ${PETSC_DIR}/lib/petsc/conf/rules
include ${PETSC_DIR}/lib/petsc/conf/test

main: sub.o
<<<<<

We don't have a simple makefile for the use case where src, obj, binaries are  in different locations.

gmakefile.test has some code for it [this requires replacing 'lib/petsc/conf/test' with custom compile targets - as in gmakefile.test].

[and what you have appears to work for this usecase.]

Satish

On Tue, 16 Feb 2021, Satish Balay via petsc-users wrote:

> for CXX - its CXXPPFLAGS
> 
> > >> > CPPFLAGS = -I ./inc -I ${MKLROOT}/include -L ${MKLROOT}/lib/
> > >> -llapack-addons -lmkl_intel_lp64 -lmkl_sequential -lmkl_core -lpthread
> 
> The link options shouldn't go into preprocessor flags.
> 
> Also duplicate blas with petsc might cause grief. Best to build petsc with mkl.
> 
> 
> Satish
> 
> On Tue, 16 Feb 2021, Matthew Knepley wrote:
> 
> > On Tue, Feb 16, 2021 at 9:39 AM Jacob Faibussowitsch <jacob.fai at gmail.com>
> > wrote:
> > 
> > > Swarnava,
> > >
> > > Perhaps try CXXFLAGS instead of CPPFLAGS. Alternatively, you may
> > > explicitly declare a %.o: %.cc target and force it to include your CPPFLAGS.
> > >
> > 
> > No, do not do either of these things. We just need to figure out why it is
> > not working for you. I will make a small example as soon as possible.
> > 
> >   Thanks,
> > 
> >      Matt
> > 
> > 
> > > Best regards,
> > >
> > > Jacob Faibussowitsch
> > > (Jacob Fai - booss - oh - vitch)
> > > Cell: (312) 694-3391
> > >
> > > On Feb 16, 2021, at 08:42, Matthew Knepley <knepley at gmail.com> wrote:
> > >
> > > On Mon, Feb 15, 2021 at 10:50 PM Barry Smith <bsmith at petsc.dev> wrote:
> > >
> > >> Swarnava,
> > >>
> > >> sddft.h is not a PETSc include file, nor is it used by PETSc so I think
> > >> the issue is not directly to PETSc it is related to where sddft is on the
> > >> machine and how it is found by your makefile.
> > >>
> > >
> > > Barry,
> > >
> > > His problem is that he is trying to put extra include flags on the compile
> > > line, but it is not working. I am wondering if his make is malfunctioning.
> > >
> > >   Thanks,
> > >
> > >      Matt
> > >
> > >
> > >>   Barry
> > >>
> > >>
> > >>
> > >> > On Feb 15, 2021, at 7:47 PM, Swarnava Ghosh <swarnava89 at gmail.com>
> > >> wrote:
> > >> >
> > >> > Dear Petsc developers and users,
> > >> >
> > >> > I am having some issue with building my code with the following
> > >> makefile. I was earlier able to build this with the same makefile on a
> > >> different machine. Would you please help me out on this issue?
> > >> >
> > >> > Contents of makefile:
> > >> > ==============================================
> > >> > all:sparc
> > >> >
> > >> > CPPFLAGS = -I ./inc -I ${MKLROOT}/include -L ${MKLROOT}/lib/
> > >> -llapack-addons -lmkl_intel_lp64 -lmkl_sequential -lmkl_core -lpthread
> > >> >
> > >> > SOURCECPP = ./src/main.cc ./src/initObjs.cc ./src/readfiles.cc ./src/
> > >> energy.cc ./src/ExchangeCorrelation.cc ./src/occupation.cc ./src/
> > >> poisson.cc ./src/chebyshev.cc ./src/scf.cc ./src/mixing.cc ./src/
> > >> forces.cc ./src/relaxatoms.cc ./src/multipole.cc ./src/electrostatics.cc
> > >> ./src/tools.cc
> > >> >
> > >> > SOURCEH = ./inc/sddft.h ./inc/isddft.h
> > >> >
> > >> > OBJSC = ./src/main.o ./src/initObjs.o ./src/readfiles.o ./src/energy.o
> > >> ./src/ExchangeCorrelation.o ./src/occupation.o ./src/poisson.o
> > >> ./src/chebyshev.o ./src/scf.o ./src/mixing.o ./src/forces.o
> > >> ./src/relaxatoms.o ./src/multipole.o ./src/electrostatics.o ./src/tools.o
> > >> >
> > >> > LIBBASE = ./lib/sparc
> > >> >
> > >> > CLEANFILES = ./lib/sparc
> > >> >
> > >> > include ${PETSC_DIR}/lib/petsc/conf/variables
> > >> > include ${PETSC_DIR}/lib/petsc/conf/rules
> > >> >
> > >> > sparc: ${OBJSC} chkopts
> > >> > ${CLINKER} -Wall -o ${LIBBASE} ${OBJSC} ${PETSC_LIB}
> > >> > ${RM} $(SOURCECPP:%.cc=%.o)
> > >> >
> > >> > ===========================================
> > >> > Error:
> > >> > /home/swarnava/petsc/linux-gnu-intel/bin/mpicxx -o src/main.o -c -g
> > >>  -I/home/swarnava/petsc/include
> > >> -I/home/swarnava/petsc/linux-gnu-intel/include    `pwd`/src/main.cc
> > >> > /home/swarnava/Research/Codes/SPARC/src/main.cc(24): catastrophic
> > >> error: cannot open source file "sddft.h"
> > >> >   #include "sddft.h"
> > >> >                     ^
> > >> > ====================================================
> > >> >
> > >> > It's not able to see the header file though I have -I ./inc in
> > >> CPPFLAGS. The directory containing makefile has the directory "inc" with
> > >> the headers and "src" with the .cc files.
> > >> >
> > >> > Thank you,
> > >> > Swarnava
> > >> >
> > >> >
> > >>
> > >>
> > >
> > > --
> > > What most experimenters take for granted before they begin their
> > > experiments is infinitely more interesting than any results to which their
> > > experiments lead.
> > > -- Norbert Wiener
> > >
> > > https://www.cse.buffalo.edu/~knepley/
> > > <http://www.cse.buffalo.edu/~knepley/>
> > >
> > >
> > >
> > 
> > 
>