These warnings appear in macOS when configured --with-shared-libraries=0

/Library/Developer/CommandLineTools/usr/bin/ranlib: file: arch-darwin-c-debug-noshared/lib/libpetsc.a(sectionhdf5.o) has no symbols
/Library/Developer/CommandLineTools/usr/bin/ranlib: file: arch-darwin-c-debug-noshared/lib/libpetsc.a(zhdf5io.o) has no symbols
/Library/Developer/CommandLineTools/usr/bin/ranlib: file: arch-darwin-c-debug-noshared/lib/libpetsc.a(hdf5io.o) has no symbols
/Library/Developer/CommandLineTools/usr/bin/ranlib: file: arch-darwin-c-debug-noshared/lib/libpetsc.a(aijhdf5.o) has no symbols
/Library/Developer/CommandLineTools/usr/bin/ranlib: file: arch-darwin-c-debug-noshared/lib/libpetsc.a(baijfact81.o) has no symbols
/Library/Developer/CommandLineTools/usr/bin/ranlib: file: arch-darwin-c-debug-noshared/lib/libpetsc.a(densehdf5.o) has no symbols
/Library/Developer/CommandLineTools/usr/bin/ranlib: file: arch-darwin-c-debug-noshared/lib/libpetsc.a(feceed.o) has no symbols
/Library/Developer/CommandLineTools/usr/bin/ranlib: file: arch-darwin-c-debug-noshared/lib/libpetsc.a(fvceed.o) has no symbols
/Library/Developer/CommandLineTools/usr/bin/ranlib: file: arch-darwin-c-debug-noshared/lib/libpetsc.a(plexhdf5xdmf.o) has no symbols

Includes the removal of unnecessary custom fortran stubs.