Can't install petsc4py for python3 on macOS 10.15.4

Hi,

I was able to install petsc manually, however I am unable to install petsc4py using pip3 or directly through

setup.py for python3. I am getting the attached error message after entering “pip3 install petsc4py” command:

How do I resolve this issue?

Thanks,

Ananya

Collecting petsc4py

Using cached https://files.pythonhosted.org/packages/7c/e7/5b089013c5188ee5f619ad64749fc3e6355943950dfcf421c327d66ee2ac/petsc4py-3.13.0.tar.gz

Requirement already satisfied: numpy in /Library/Python/3.7/site-packages (from petsc4py) (1.18.3)

Building wheels for collected packages: petsc4py

Building wheel for petsc4py (setup.py) ... error

Complete output from command /Applications/Xcode.app/Contents/Developer/usr/bin/python3 -u -c "import setuptools, tokenize;__file__='/private/var/folders/bt/vqpcwrcj1bv10dg0nwk3txwc0000gn/T/pip-install-gj7g_y0f/petsc4py/setup.py';f=getattr(tokenize, 'open', open)(__file__);code=f.read().replace('\r\n', '\n');f.close();exec(compile(code, __file__, 'exec'))" bdist_wheel -d /private/var/folders/bt/vqpcwrcj1bv10dg0nwk3txwc0000gn/T/pip-wheel-tgs39xrs --python-tag cp37:

running bdist_wheel

running build

running build_src

running build_py

creating build

creating build/lib.macosx-10.14-x86_64-3.7

creating build/lib.macosx-10.14-x86_64-3.7/petsc4py

copying src/PETSc.py -> build/lib.macosx-10.14-x86_64-3.7/petsc4py

copying src/__init__.py -> build/lib.macosx-10.14-x86_64-3.7/petsc4py

copying src/__main__.py -> build/lib.macosx-10.14-x86_64-3.7/petsc4py

creating build/lib.macosx-10.14-x86_64-3.7/petsc4py/lib

copying src/lib/__init__.py -> build/lib.macosx-10.14-x86_64-3.7/petsc4py/lib

creating build/lib.macosx-10.14-x86_64-3.7/petsc4py/include

creating build/lib.macosx-10.14-x86_64-3.7/petsc4py/include/petsc4py

copying src/include/petsc4py/numpy.h -> build/lib.macosx-10.14-x86_64-3.7/petsc4py/include/petsc4py

copying src/include/petsc4py/petsc4py.h -> build/lib.macosx-10.14-x86_64-3.7/petsc4py/include/petsc4py

copying src/include/petsc4py/petsc4py.PETSc.h -> build/lib.macosx-10.14-x86_64-3.7/petsc4py/include/petsc4py

copying src/include/petsc4py/petsc4py.PETSc_api.h -> build/lib.macosx-10.14-x86_64-3.7/petsc4py/include/petsc4py

copying src/include/petsc4py/petsc4py.i -> build/lib.macosx-10.14-x86_64-3.7/petsc4py/include/petsc4py

copying src/include/petsc4py/PETSc.pxd -> build/lib.macosx-10.14-x86_64-3.7/petsc4py/include/petsc4py

copying src/include/petsc4py/__init__.pxd -> build/lib.macosx-10.14-x86_64-3.7/petsc4py/include/petsc4py

copying src/include/petsc4py/__init__.pyx -> build/lib.macosx-10.14-x86_64-3.7/petsc4py/include/petsc4py

copying src/PETSc.pxd -> build/lib.macosx-10.14-x86_64-3.7/petsc4py

copying src/lib/petsc.cfg -> build/lib.macosx-10.14-x86_64-3.7/petsc4py/lib

running build_ext

PETSC_DIR: /Users/ananyabijaya/petsc-3.13.0

PETSC_ARCH: mac-gnu-debug

version: 3.13.0 release

integer-size: 32-bit

scalar-type: real

precision: double

language: CONLY

compiler: gcc

linker: gcc

building 'PETSc' extension

creating build/temp.macosx-10.14-x86_64-3.7

creating build/temp.macosx-10.14-x86_64-3.7/mac-gnu-debug

creating build/temp.macosx-10.14-x86_64-3.7/mac-gnu-debug/src

gcc -sdk macosx clang -arch x86_64 -Wall -Wwrite-strings -Wno-strict-aliasing -Wno-unknown-pragmas -fstack-protector -fno-stack-check -Qunused-arguments -g3 -Wno-unused-result -Wsign-compare -Wunreachable-code -fno-common -dynamic -DNDEBUG -g -fwrapv -O3 -Wall -iwithsysroot/System/Library/Frameworks/System.framework/PrivateHeaders -iwithsysroot/Applications/Xcode.app/Contents/Developer/Library/Frameworks/Python3.framework/Versions/3.7/Headers -I/Users/ananyabijaya/petsc-3.13.0/mac-gnu-debug/include -I/Users/ananyabijaya/petsc-3.13.0/include -Isrc/include -I/Library/Python/3.7/site-packages/numpy/core/include -I/Applications/Xcode.app/Contents/Developer/Library/Frameworks/Python3.framework/Versions/3.7/include/python3.7m -c src/PETSc.c -o build/temp.macosx-10.14-x86_64-3.7/mac-gnu-debug/src/PETSc.o

clang: error: unknown argument: '-sdk'

clang: error: no such file or directory: 'macosx'

clang: error: no such file or directory: 'clang'

error: command 'gcc' failed with exit status 1

Failed building wheel for petsc4py

Running setup.py clean for petsc4py

Failed to build petsc4py

Installing collected packages: petsc4py

Running setup.py install for petsc4py ... error

Complete output from command /Applications/Xcode.app/Contents/Developer/usr/bin/python3 -u -c "import setuptools, tokenize;__file__='/private/var/folders/bt/vqpcwrcj1bv10dg0nwk3txwc0000gn/T/pip-install-gj7g_y0f/petsc4py/setup.py';f=getattr(tokenize, 'open', open)(__file__);code=f.read().replace('\r\n', '\n');f.close();exec(compile(code, __file__, 'exec'))" install --record /private/var/folders/bt/vqpcwrcj1bv10dg0nwk3txwc0000gn/T/pip-record-l8u7hi_6/install-record.txt --single-version-externally-managed --compile:

running install