pyenv install error on MacOS Big Sur - sendfile invalid

There seems to be some issue going on with pyenv and MacOS Big Sur.

./Modules/posixmodule.c:8320:15: error: implicit declaration of function 'sendfile' is invalid in C99 [-Werror,-Wimplicit-function-declaration]

        ret = sendfile(in, out, offset, &sbytes, &sf, flags);

After referring multiple posts, this is what worked for me.

brew install zlib bzip2

CFLAGS="-I$(brew --prefix openssl)/include -I$(brew --prefix bzip2)/include -I$(brew --prefix readline)/include -I$(xcrun --show-sdk-path)/usr/include" LDFLAGS="-L$(brew --prefix openssl)/lib -L$(brew --prefix readline)/lib -L$(brew --prefix zlib)/lib -L$(brew --prefix bzip2)/lib" pyenv install 3.5.3 --patch < <(curl -sSL https://github.com/python/cpython/commit/8ea6353.patch\?full_index\=1)

Vmware Fusion 12 - Mac OS Big Sur - Could not connect Network

Was unable to get the network to work after a restart.

| vmx| I005: VNET: 'ethernet0' enable link state propagation, lsp.state = 5

| vmx| I005: DictionaryLoad: Cannot open file "/Library/Preferences/VMware Fusion/config": No such file or directory.

| vmx| I005: VNET: MACVNetMacosGetRealAdapterType: network type for adapter 0: 8

| vmx| I005: VNET: MACVNetMacosGetVnetProperties: vnet properties: vnet=vmnet8, nat=yes, dhcp=yes (ignored), subnet=172.16.82.0, mask=255.255.255.0, firstAddr=172.16.82.1, lastAddr=172.16.82.127, isIPv6=no, IPv6Prefix=fd15:4ba5:5a2b:1008::, IPv6PrefixLen=64

| vmx| I005: VNET: MACVNetPortVirtApiStartInterface: Waiting on semaphore for adapter: 0

| host-1216256| I005: VNET: MACVNetPortVirtApiStartHandler: starting interface for adapter: 0, status: 1009

| host-1216256| W003: VNET: MACVNetPortVirtApiStartHandler: unable to create virtual intrface for device: 0, status: 1009

| vmx| I005: VNET: Semaphore signalled for adapter: 0, timeoutMs=5000, waitMs=3

| vmx| W003: VNET: MACVNetPortVirtApiStartInterface: Failed to create interface for adapter: 0, handlerStatus: 1009

| vmx| I005: VNET: MACVNetPort_Connect: Ethernet0: can't start virtual interface

| vmx| I005: Msg_Post: Error

| vmx| I005: [msg.vnet.connectvnet] Could not connect 'Ethernet0' to virtual network '/dev/vmnet8'. More information can be found in the vmware.log file.

| vmx| I005: [msg.device.badconnect] Failed to connect virtual device 'Ethernet0'.

| vmx| I005: ----------------------------------------

Here's what worked for me:

• Click on "Apple" logo in menu bar
• Click "System Preferences"
• Click "Sharing"
• Disable "Internet Sharing"
• Restart the VM.