[petsc-users] makefile error

[Matthew Knepley]

On Wed, Apr 26, 2023 at 6:02 AM ­권승리 / 학생 / 항공우주공학과 <ksl7912 at snu.ac.kr>
wrote:

> Dear developers
>
> Could you recommend the error messages below?
>
> /home/ksl/petsc/arch-linux-c-debug/bin/mpicxx -Wall -Wwrite-strings
> -Wno-strict-aliasing -Wno-unknown-pragmas -Wno-lto-type-mismatch
> -fstack-protector -fvisibility=hidden -g -O0  -I/home/ksl/petsc/include
> -I/home/ksl/petsc/arch-linux-c-debug/include     -o app a1.o a2.o a3.o a4.o
> a5.o -Wl,-rpath,/home/ksl/petsc/arch-linux-c-debug/lib
> -L/home/ksl/petsc/arch-linux-c-debug/lib
> -Wl,-rpath,/home/ksl/petsc/arch-linux-c-debug/lib
> -L/home/ksl/petsc/arch-linux-c-debug/lib
> -Wl,-rpath,/usr/lib/gcc/x86_64-linux-gnu/9
> -L/usr/lib/gcc/x86_64-linux-gnu/9 -lpetsc -llapack -lblas -lpthread -lm
> -lstdc++ -ldl -lmpifort -lmpi -lgfortran -lm -lgfortran -lm -lgcc_s
> -lquadmath -lstdc++ -ldl
> /usr/bin/ld: cannot find -lpetsc
> collect2: error: ld returned 1 exit status
> make: *** [makefile:33: app] Error 1
>

It could be

1) Your build failed, so libpetsc was not produced

2) arch-linux-c-debug is not the PETSC_ARCH that you built

  Thanks,

     Matt


> Best regards
> Seung Lee Kwon
>
> --
> Seung Lee Kwon, Ph.D.Candidate
> Aerospace Structures and Materials Laboratory
> Department of Mechanical and Aerospace Engineering
> Seoul National University
> Building 300 Rm 503, Gwanak-ro 1, Gwanak-gu, Seoul, South Korea, 08826
> E-mail : ksl7912 at snu.ac.kr
> Office : +82-2-880-7389
> C. P : +82-10-4695-1062
>


-- 
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/>
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