check for the existence of linux/tcp.h
commit8177ec7a32ef7f4c12756d8b272d15a9239a154d
authorEric Wong <e@80x24.org>
Tue, 14 Jul 2015 20:08:49 +0000 (14 20:08 +0000)
committerEric Wong <e@80x24.org>
Tue, 14 Jul 2015 20:09:58 +0000 (14 20:09 +0000)
tree184797ee0af63cedd16e3e1e97ecac3dd76f5a6b
parent8eb264580731e4304808428db5c7a33fe1926a52
check for the existence of linux/tcp.h

The linux/tcp.h header may not exist on alternative libc
implementations such as musl.

Noticed-by: Doug Forster <doug.forster@gmail.com>
ext/raindrops/extconf.rb
ext/raindrops/linux_tcp_info.c