Here is the compile command and the warning:
>>>>>>
===== Checking linker
Executing: gfortran -c -o
/var/folders/9w/7dlszmmn6q1gd5yf3r9n79bc0000gn/T/petsc-dk9aiv7x/config.setCompilers/conftest.o
-I/var/folders/9w/7dlszmmn6q1gd5yf3r9n79bc0000gn/T/petsc-dk9aiv7x/config.setCompilers
/var/folders/9w/7dlszmmn6q1gd5yf3r9n79bc0000gn/T/petsc-dk9aiv7x/config.setCompilers/conftest.F90
Successful compile:
Source:
function foo(a)
real:: a,x,bar
common /xx/ x
x=a
foo = bar(x)
end
Executing: gcc -o
/var/folders/9w/7dlszmmn6q1gd5yf3r9n79bc0000gn/T/petsc-dk9aiv7x/config.setCompilers/libconftest.dylib
-dynamiclib -single_module -undefined dynamic_lookup -multiply_defined
suppress
/var/folders/9w/7dlszmmn6q1gd5yf3r9n79bc0000gn/T/petsc-dk9aiv7x/config.setCompilers/conftest.o
Possible ERROR while running linker:
stderr:
ld: warning: object file
(/var/folders/9w/7dlszmmn6q1gd5yf3r9n79bc0000gn/T/petsc-dk9aiv7x/config.setCompilers/conftest.o)
was built for newer macOS version (11.2) than being linked (11.0)
Accepted FC PIC code without compiler flag
=============================================================================================
<<<<<<
Its likely due to the way brew built gfortran. You can try compiling a simple
test code and see if you can reproduce this warning.
There is a related issue at:
https://github.com/spack/spack/issues/21644
Satish
On Sat, 13 Feb 2021, Jacob Faibussowitsch wrote:
> Hello All,
>
> I’ve been getting these warnings for weeks, at first I figured it was due to
> gfortran brew package not being updated for Big Sur, but since it has
> persisted through a few gfortran brew updates I’m thinking it may be petsc
> related. This is on clean build on master.
>
> ld: warning: object file
> (master-arch-darwin-c-debug/obj/sys/classes/bag/f2003-src/fsrc/bagenum.o) was
> built for newer macOS version (11.2) than being linked (11.0)
> ld: warning: object file
> (master-arch-darwin-c-debug/obj/sys/f90-src/fsrc/f90_fwrap.o) was built for
> newer macOS version (11.2) than being linked (11.0)
> ld: warning: object file
> (master-arch-darwin-c-debug/obj/sys/objects/f2003-src/fsrc/optionenum.o) was
> built for newer macOS version (11.2) than being linked (11.0)
> ld: warning: object file (master-arch-darwin-c-debug/obj/sys/fsrc/somefort.o)
> was built for newer macOS version (11.2) than being linked (11.0)
> ld: warning: object file
> (master-arch-darwin-c-debug/obj/sys/f90-mod/petscsysmod.o) was built for
> newer macOS version (11.2) than being linked (11.0)
>
> Best regards,
>
> Jacob Faibussowitsch
> (Jacob Fai - booss - oh - vitch)
> Cell: (312) 694-3391
>
