Can not install on latest Alpine image 3.21

[nicolargo]

Installation is ok on Alpine image 3.20 but not on 3.21:

/ # ./venv/bin/pip install netifaces-plus
Collecting netifaces-plus
  Using cached netifaces_plus-0.12.4.tar.gz (30 kB)
  Installing build dependencies ... done
  Getting requirements to build wheel ... done
  Preparing metadata (pyproject.toml) ... done
Building wheels for collected packages: netifaces-plus
  Building wheel for netifaces-plus (pyproject.toml) ... error
  error: subprocess-exited-with-error
  
  × Building wheel for netifaces-plus (pyproject.toml) did not run successfully.
  │ exit code: 1
  ╰─> [55 lines of output]
      <string>:13: SetuptoolsDeprecationWarning: Deprecated API usage.
      !!
      
              ********************************************************************************
              As setuptools moves its configuration towards `pyproject.toml`,
              `setuptools.config.read_configuration` became deprecated.
      
              For the time being, you can use the `setuptools.config.setupcfg` module
              to access a backward compatible API, but this module is provisional
              and might be removed in the future.
      
              To read project metadata, consider using
              ``build.util.project_wheel_metadata`` (https://pypi.org/project/build/).
              For simple scenarios, you can also try parsing the file directly
              with the help of ``configparser``.
              ********************************************************************************
      
      !!
      running bdist_wheel
      running build
      running build_py
      creating build/lib.linux-x86_64-cpython-312/netifaces
      copying netifaces/__init__.py -> build/lib.linux-x86_64-cpython-312/netifaces
      copying netifaces/__init__.pyi -> build/lib.linux-x86_64-cpython-312/netifaces
      copying netifaces/py.typed -> build/lib.linux-x86_64-cpython-312/netifaces
      running build_ext
      checking for getifaddrs...found.
      checking for getnameinfo...found.
      checking for IPv6 socket IOCTLs...not found.
      checking for optional header files...netpacket/packet.h linux/atm.h linux/llc.h linux/tipc.h.
      checking whether struct sockaddr has a length field...no.
      checking which sockaddr_xxx structs are defined...in in6 un ll atmpvc atmsvc llc.
      checking for routing socket support...no.
      checking for sysctl(CTL_NET...) support...no.
      checking for netlink support...yes.
      will use netlink to read routing table
      building '_netifaces' extension
      creating build/temp.linux-x86_64-cpython-312/netifaces
      gcc -fno-strict-overflow -Wsign-compare -DNDEBUG -g -O3 -Wall -fPIC -DNETIFACES_VERSION=0.12.4 -DHAVE_GETIFADDRS=1 -DHAVE_GETNAMEINFO=1 -DHAVE_NETPACKET_PACKET_H=1 -DHAVE_LINUX_ATM_H=1 -DHAVE_LINUX_LLC_H=1 -DHAVE_LINUX_TIPC_H=1 -DHAVE_SOCKADDR_IN=1 -DHAVE_SOCKADDR_IN6=1 -DHAVE_SOCKADDR_UN=1 -DHAVE_SOCKADDR_LL=1 -DHAVE_SOCKADDR_ATMPVC=1 -DHAVE_SOCKADDR_ATMSVC=1 -DHAVE_SOCKADDR_LLC=1 -DHAVE_PF_NETLINK=1 -I/venv/include -I/usr/include/python3.12 -c netifaces/_netifaces.c -o build/temp.linux-x86_64-cpython-312/netifaces/_netifaces.o
      netifaces/_netifaces.c: In function 'ifaddrs':
      netifaces/_netifaces.c:1259:5: warning: this 'if' clause does not guard... [-Wmisleading-indentation]
       1259 |     if (addr->ifa_name == NULL || strcmp (addr->ifa_name, ifname) != 0)
            |     ^~
      netifaces/_netifaces.c:1262:7: note: ...this statement, but the latter is misleadingly indented as if it were guarded by the 'if'
       1262 |       PyObject* ifinfo = getifaddrsinfo(addr);
            |       ^~~~~~~~
      netifaces/_netifaces.c: In function 'gateways':
      netifaces/_netifaces.c:2006:9: error: initialization of 'int' from 'void *' makes integer from pointer without a cast [-Wint-conversion]
       2006 |         NULL,
            |         ^~~~
      netifaces/_netifaces.c:2006:9: note: (near initialization for 'msghdr.__pad1')
      netifaces/_netifaces.c:2041:33: warning: comparison of integer expressions of different signedness: '__u32' {aka 'unsigned int'} and 'int' [-Wsign-compare]
       2041 |         if (pmsg->hdr.nlmsg_seq != seq || pmsg->hdr.nlmsg_pid != sanl.nl_pid)
            |                                 ^~
      error: command '/usr/bin/gcc' failed with exit code 1
      [end of output]
  
  note: This error originates from a subprocess, and is likely not a problem with pip.
  ERROR: Failed building wheel for netifaces-plus
Failed to build netifaces-plus
ERROR: ERROR: Failed to build installable wheels for some pyproject.toml based projects (netifaces-plus)

Perhaps it came from the gcc version:

• Alpine image 3.20: gcc (Alpine 13.2.1_git20240309) 13.2.1 20240309
• Alpine image 3.21: gcc (Alpine 14.2.0) 14.2.0

[tsukumijima]

Originally, I was reluctantly maintaining this package, and I have not tested it on Alpine.
To be honest, I don't see much reason to use Alpine Docker or musl on most systems these days.

[nicolargo]

Hi @tsukumijima,

i think that the issue did not came from Alpine but more by the GCC version.
netifaces-plus ( and netifaces) compilation fail with GCC >14.