<html><head></head><body><div style="font-family:Helvetica Neue, Helvetica, Arial, sans-serif;font-size:13px;"><div style="font-family:Helvetica Neue, Helvetica, Arial, sans-serif;font-size:13px;">Hi, <br></div><div style="font-family:Helvetica Neue, Helvetica, Arial, sans-serif;font-size:13px;">I installed LTS 18.04 with headers. I'm trying to use the new flag MAP_SYNC with mmap call, but it complained MAP_SYNC undefined.</div><div style="font-family:Helvetica Neue, Helvetica, Arial, sans-serif;font-size:13px;">What #define do I need to enable this?</div><div style="font-family:Helvetica Neue, Helvetica, Arial, sans-serif;font-size:13px;"><br></div><div style="font-family:Helvetica Neue, Helvetica, Arial, sans-serif;font-size:13px;"><br></div><div style="font-family:Helvetica Neue, Helvetica, Arial, sans-serif;font-size:13px;">Thanks,</div><div style="font-family:Helvetica Neue, Helvetica, Arial, sans-serif;font-size:13px;"><br></div><div style="font-family:Helvetica Neue, Helvetica, Arial, sans-serif;font-size:13px;">David<br></div></div></body></html>