simpleiot can not cross compile for x86_64

[kraj]

when compiling simpleiot for x86_64, it fails with below error

go run github.com/benbjohnson/genesis/cmd/genesis -C frontend/output -pkg frontend index.html elm.js main.js ble.js simple-iot-app-logo.png ports.js styles.css
+ return 0
+ return 0
+ GOARCH=amd64
+ go build -o siot cmd/siot/main.go
# net
../recipe-sysroot-native/usr/lib/go/src/net/cgo_linux.go:10:10: fatal error: netdb.h: No such file or directory
10 | #include <netdb.h>
|          ^~~~~~~~~
compilation terminated.
+ return 1
+ bb_exit_handler
+ ret=1
+ case $ret in
+ case $BASH_VERSION in
+ echo 'WARNING: ../temp/run.do_compile:1 exit 1 from '\''return 1'\'''
WARNING: ../temp/run.do_compile:1 exit 1 from 'return 1'

[kraj]

it seems its figuring out that it needs to compile C stuff and resorts to using internal compiler which mixes with native sysroot because both host and target are x86_64