[petsc-dev] (arm64) could not find object file symbol for symbol ___muldc3

[Blaise A Bourdin]

Hi,

I am having the following warning when compiling any fortran example (currently on main, but  it’s been going on for a little while) on a ARM mac.


*******************Error detected during compile or link!*******************
See http://www.mcs.anl.gov/petsc/documentation/faq.html
/opt/HPC/petsc-main/src/snes/tutorials ex5f
*********************************************************
mpif90 -Wl,-bind_at_load -Wl,-multiply_defined,suppress -Wl,-multiply_defined -Wl,suppress -Wl,-commons,use_dylibs -Wl,-search_paths_first -Wl,-no_compact_unwind -ffree-line-length-none -fallow-argument-mismatch -fPIC -g   -ffree-line-length-none -fallow-argument-mismatch -fPIC -g    -I/opt/HPC/petsc-main/include -I/opt/HPC/petsc-main/bigsur-gcc10.2-arm64-reallybasic-g/include -I/opt/X11/include     ex5f.F90  -Wl,-rpath,/opt/HPC/petsc-main/bigsur-gcc10.2-arm64-reallybasic-g/lib -L/opt/HPC/petsc-main/bigsur-gcc10.2-arm64-reallybasic-g/lib -Wl,-rpath,/opt/X11/lib -L/opt/X11/lib -Wl,-rpath,/opt/homebrew/Cellar/mpich/3.4.1_2/lib -L/opt/homebrew/Cellar/mpich/3.4.1_2/lib -Wl,-rpath,/opt/homebrew/Cellar/gcc/10.2.0_4/lib/gcc/10/gcc/aarch64-apple-darwin20/10.2.1 -L/opt/homebrew/Cellar/gcc/10.2.0_4/lib/gcc/10/gcc/aarch64-apple-darwin20/10.2.1 -Wl,-rpath,/opt/homebrew/Cellar/gcc/10.2.0_4/lib/gcc/10 -L/opt/homebrew/Cellar/gcc/10.2.0_4/lib/gcc/10 -lpetsc -llapack -lblas -lX11 -lc++ -ldl -lmpifort -lmpi -lpmpi -lgfortran -lemutls_w -lm -lc++ -ldl -o ex5f
warning: (arm64)  could not find object file symbol for symbol ___muldc3
Fortran example src/snes/tutorials/ex5f run successfully with 1 MPI process


For reference, here is how I configured petsc:
./configure     --CFLAGS='-Wimplicit-function-declaration'    --FFLAGS="-ffree-line-length-none -fallow-argument-mismatch"            --with-debugging=1                    --with-shared-libraries=1             --with-x11=1

It looks like this symbol is referenced in: sfpack.o

SiMini:petsc-main (main)$ grep -ri muldc3 bigsur-gcc10.2-arm64-reallybasic-g/*
Binary file bigsur-gcc10.2-arm64-reallybasic-g/lib/libpetsc.3.015.0.dylib matches
Binary file bigsur-gcc10.2-arm64-reallybasic-g/lib/libpetsc.3.015.dylib matches
bigsur-gcc10.2-arm64-reallybasic-g/lib/petsc/conf/check.log:warning: (arm64)  could not find object file symbol for symbol ___muldc3
Binary file bigsur-gcc10.2-arm64-reallybasic-g/lib/libpetsc.dylib matches
Binary file bigsur-gcc10.2-arm64-reallybasic-g/obj/vec/is/sf/impls/basic/sfpack.o matches

SiMini:petsc-main (main)$ nm bigsur-gcc10.2-arm64-reallybasic-g/obj/vec/is/sf/impls/basic/sfpack.o | grep muldc3
                 U ___muldc3


Any idea?
Blaise


--
A.K. & Shirley Barton Professor of  Mathematics
Adjunct Professor of Mechanical Engineering
Adjunct of the Center for Computation & Technology
Louisiana State University, Lockett Hall Room 344, Baton Rouge, LA 70803, USA
Tel. +1 (225) 578 1612, Fax  +1 (225) 578 4276 Web http://www.math.lsu.edu/~bourdin

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