Detect aio_abi.h and define EV_USE_LINUXAIO if present.

This avoids the need to have kernel headers installed. Fixes #225.
socketry · Sep 24, 2019 · 0e82096 · 0e82096
1 parent 7a3d634
commit 0e82096
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Showing 2 changed files with 2 additions and 8 deletions.
diff --git a/ext/libev/ev.c b/ext/libev/ev.c
@@ -335,14 +335,6 @@
 # define EV_USE_PORT 0
 #endif
 
-#ifndef EV_USE_LINUXAIO
-# if __linux /* libev currently assumes linux/aio_abi.h is always available on linux */
-#  define EV_USE_LINUXAIO 1
-# else
-#  define EV_USE_LINUXAIO 0
-# endif
-#endif
-
 #ifndef EV_USE_INOTIFY
 # if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
 #  define EV_USE_INOTIFY EV_FEATURE_OS

diff --git a/ext/nio4r/extconf.rb b/ext/nio4r/extconf.rb
@@ -13,6 +13,8 @@
 
 have_header("unistd.h")
 
+
+$defs << "-DEV_USE_LINUXAIO"     if have_header("linux/aio_abi.h")
 $defs << "-DEV_USE_SELECT"       if have_header("sys/select.h")
 $defs << "-DEV_USE_POLL"         if have_type("port_event_t", "poll.h")
 $defs << "-DEV_USE_EPOLL"        if have_header("sys/epoll.h")