does not compile on macOS

[ThomasWaldmann]

• macOS 15
• pyfuse 3.4.0
• macFUSE 4.10.0 (first one with fuse3 support)

(pyfuse3-env) tw@MacBook-Pro pyfuse3 % python setup.py build_cython
found MANIFEST.in, running in developer mode
running build_cython
Using Cython version 3.0.11.
Compiling /Users/tw/w/pyfuse3/src/pyfuse3/__init__.pyx
(pyfuse3-env) tw@MacBook-Pro pyfuse3 % python setup.py build_ext --inplace
found MANIFEST.in, running in developer mode
running build_ext
building 'pyfuse3.__init__' extension
creating build
creating build/temp.macosx-15.0-arm64-cpython-311
creating build/temp.macosx-15.0-arm64-cpython-311/src
creating build/temp.macosx-15.0-arm64-cpython-311/src/pyfuse3
clang -Wsign-compare -Wunreachable-code -fno-common -dynamic -DNDEBUG -g -fwrapv -O3 -Wall -isysroot /Library/Developer/CommandLineTools/SDKs/MacOSX15.sdk -I/Users/tw/w/pyfuse3-env/include -I/opt/homebrew/opt/python@3.11/Frameworks/Python.framework/Versions/3.11/include/python3.11 -c src/pyfuse3/__init__.c -o build/temp.macosx-15.0-arm64-cpython-311/src/pyfuse3/__init__.o -I/usr/local/include/fuse3 -DFUSE_USE_VERSION=32 -Wall -Wextra -Wconversion -Wsign-compare -DPYFUSE3_VERSION=\"3.4.0\" -Wno-unused-function -Wno-implicit-fallthrough -Wno-unused-function -Wno-unused-parameter -Werror -Wfatal-errors -Wno-error=unreachable-code -Werror=conversion -Werror=sign-compare
src/pyfuse3/__init__.c:7897:88: fatal error: incompatible pointer types passing 'struct fuse_entry_param *' to parameter of type 'const struct fuse_darwin_entry_param *' [-Wincompatible-pointer-types]
 7897 |       __pyx_cur_scope->__pyx_v_ret = fuse_reply_entry(__pyx_cur_scope->__pyx_v_c->req, (&__pyx_cur_scope->__pyx_v_entry->fuse_param));
      |                                                                                        ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
/usr/local/include/fuse3/fuse_lowlevel.h:1478:2: note: passing argument to parameter here
 1478 |         fuse_reply_entry,
      |         ^
1 error generated.
error: command '/usr/bin/clang' failed with exit code 1

[ThomasWaldmann]

Note: until macFUSE was updated recently with fuse3 support, everybody was using fuse(2), thus pyfuse3 of course was never compiled or tested on macOS.

It would be good if it could be made working though because then sw could rather use pyfuse3 on macOS than llfuse.

[Nikratio]

It's possible that just suppressing the warning (Wincompatible-pointer-types) may make this work.. could you give it a shot?

[ThomasWaldmann]

@Nikratio thanks for the hint, this avoids the issue:

    # On macOS, there are some such warnings:
    compile_args.append('-Wno-incompatible-pointer-types')

[ThomasWaldmann]

Next issues:

• there is no syncfs in unistd.h on macOS.

• when running the tests:

___________________________________________________________________ test_sup_groups ___________________________________________________________________
Traceback (most recent call last):
  File "/Users/tw/w/pyfuse3/test/test_api.py", line 33, in test_sup_groups
    gids = pyfuse3.get_sup_groups(os.getpid())
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "src/pyfuse3/__init__.pyx", line 1013, in pyfuse3.get_sup_groups
    with open('/proc/%d/status' % pid, 'r') as fh:
FileNotFoundError: [Errno 2] No such file or directory: '/proc/46765/status'

There is no /proc on macOS.