On Fri, Mar 12, 2021 at 3:44 AM Pierre Jolivet <[email protected]> wrote:

Sorry to dig up this old thread, but this is triggering false positives while make checking for people who don’t want to toy around with MACOSX_DEPLOYMENT_TARGET. Could/should we filter this somehow, or have BuildSystem tinker with the environment variable itself?

I worry about suppressing this warning because the variable has real consequences for linking (especially if CMake is somehow involved), and it might make it harder to debug. I would rather have a large warning suggesting people unset this. Thanks, Matt

Thanks, Pierre

$ make check Running check examples to verify correct installation Using PETSC_DIR=/Users/jolivet/repo/petsc and PETSC_ARCH=arch-darwin-c-debug-real *******************Error detected during compile or link!******************* See http://www.mcs.anl.gov/petsc/documentation/faq.html /Users/jolivet/repo/petsc/src/snes/tutorials ex19

********************************************************************************* mpicc -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 -Wall -g -Wall -g -I/Users/jolivet/repo/petsc/include -I/Users/jolivet/repo/petsc/arch-darwin-c-debug-real/include -I/opt/intel/mkl/include ex19.c -Wl,-rpath,/Users/jolivet/repo/petsc/arch-darwin-c-debug-real/lib -L/Users/jolivet/repo/petsc/arch-darwin-c-debug-real/lib -Wl,-rpath,/Users/jolivet/repo/petsc/arch-darwin-c-debug-real/lib -L/Users/jolivet/repo/petsc/arch-darwin-c-debug-real/lib -Wl,-rpath,/opt/intel/mkl/lib -L/opt/intel/mkl/lib -Wl,-rpath,/opt/intel/lib -L/opt/intel/lib -Wl,-rpath,/usr/local/Cellar/mpich/3.4.1_1/lib -L/usr/local/Cellar/mpich/3.4.1_1/lib -Wl,-rpath,/usr/local/Cellar/gcc/10.2.0_4/lib/gcc/10/gcc/x86_64-apple-darwin20/10.2.0 -L/usr/local/Cellar/gcc/10.2.0_4/lib/gcc/10/gcc/x86_64-apple-darwin20/10.2.0 -Wl,-rpath,/usr/local/Cellar/gcc/10.2.0_4/lib/gcc/10 -L/usr/local/Cellar/gcc/10.2.0_4/lib/gcc/10 -lpetsc -lHYPRE -lcmumps -ldmumps -lsmumps -lzmumps -lmumps_common -lpord -lmkl_scalapack_lp64 -lmkl_blacs_mpich_lp64 -lEl -lElSuiteSparse -lpmrrr -lp4est -lsc -liomp5 -lmkl_intel_lp64 -lmkl_intel_thread -lmkl_core -lparmmg -lmmg -lmmg3d -lptesmumps -lptscotchparmetis -lptscotch -lptscotcherr -lesmumps -lscotch -lscotcherr -lparmetis -lmetis -ltriangle -ltet -lz -lX11 -lc++ -ldl -lmpifort -lmpi -lpmpi -lgfortran -lquadmath -lm -lc++ -ldl -o ex19 ld: warning: dylib (/usr/local/Cellar/mpich/3.4.1_1/lib/libmpifort.dylib) was built for newer macOS version (11.1) than being linked (11.0) ld: warning: dylib (/usr/local/Cellar/gcc/10.2.0_4/lib/gcc/10/libgfortran.dylib) was built for newer macOS version (11.2) than being linked (11.0) ld: warning: dylib (/usr/local/Cellar/gcc/10.2.0_4/lib/gcc/10/libquadmath.dylib) was built for newer macOS version (11.2) than being linked (11.0) ld: warning: dylib (/usr/local/Cellar/gcc/10.2.0_4/lib/gcc/10/libquadmath.0.dylib) was built for newer macOS version (11.2) than being linked (11.0) ld: warning: object file (/Users/jolivet/repo/petsc/arch-darwin-c-debug-real/lib/libcmumps.a(cana_aux.o)) was built for newer macOS version (11.2) than being linked (11.0) ld: warning: object file (/Users/jolivet/repo/petsc/arch-darwin-c-debug-real/lib/libdmumps.a(dana_aux.o)) was built for newer macOS version (11.2) than being linked (11.0) ld: warning: object file (/Users/jolivet/repo/petsc/arch-darwin-c-debug-real/lib/libsmumps.a(sana_aux.o)) was built for newer macOS version (11.2) than being linked (11.0) ld: warning: object file (/Users/jolivet/repo/petsc/arch-darwin-c-debug-real/lib/libzmumps.a(zana_aux.o)) was built for newer macOS version (11.2) than being linked (11.0) ld: warning: object file (/Users/jolivet/repo/petsc/arch-darwin-c-debug-real/lib/libmumps_common.a(front_data_mgt_m.o)) was built for newer macOS version (11.2) than being linked (11.0) C/C++ example src/snes/tutorials/ex19 run successfully with 1 MPI process

On 15 Feb 2021, at 6:08 PM, Jacob Faibussowitsch <[email protected]> wrote:

Yes, this also seems to work on my end.

Best regards,

Jacob Faibussowitsch (Jacob Fai - booss - oh - vitch) Cell: (312) 694-3391

On Feb 15, 2021, at 12:05, Satish Balay <[email protected]> wrote:

Does setting MACOSX_DEPLOYMENT_TARGET also work?

Satish

On Mon, 15 Feb 2021, Jacob Faibussowitsch wrote:

I think this problem ultimately stems from the fact that gcc/g++ and gfortran are not from the same people on macOS. It seems like clang is configured to build for 11.0 target, whilst gcc defaults to newest available target. And indeed if I change my compile command there is no warning:

mkdir -p build && gfortran -c -o ./build/conftest.o conftest.F90 && gcc-10 -o ./build/libconftest.dylib ./build/conftest.o -dynamiclib -undefined dynamic_lookup && rm -rf ./build

Note I now call gcc-10 as the linker which is the __actual__ gcc (not clang in a trench coat).

Best regards,

Jacob Faibussowitsch (Jacob Fai - booss - oh - vitch) Cell: (312) 694-3391

On Feb 15, 2021, at 11:46, Jacob Faibussowitsch <[email protected]> wrote:

Ok so if I pass -mmacosx-version-min=11.2 to the linker the warning disappears...

Best regards,

Jacob Faibussowitsch (Jacob Fai - booss - oh - vitch) Cell: (312) 694-3391

On Feb 15, 2021, at 11:41, Jacob Faibussowitsch <[email protected] < mailto:[email protected] <[email protected]>>> wrote:

I can reproduce the warning compiling just that simple code you listed. This is the compile command:

mkdir -p build && gfortran -c -o ./build/conftest.o conftest.F90 && gcc -o ./build/libconftest.dylib ./build/conftest.o -dynamiclib -undefined dynamic_lookup && rm -rf ./build

And error: ld: warning: object file (./build/conftest.o) was built for newer macOS version (11.2) than being linked (11.0)

Note I recently uninstalled and reinstalled command line tools too, which does not seem to have fixed it.

Best regards,

Jacob Faibussowitsch (Jacob Fai - booss - oh - vitch) Cell: (312) 694-3391

On Feb 15, 2021, at 11:30, Satish Balay <[email protected] < mailto:[email protected] <[email protected]>>> wrote:

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 < 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

-- 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/>