Fix build under kfreebsd

Signed-off-by: Chris Lamb <chris@chris-lamb.co.uk>

[Instead of checking for "not solaris" we feature detect
for availability of what we want, then remove the system
that advertises compatability but doesn't actually provide it
(given our assumptions about what we're guarding).]

Closes #254

1 files changed, 1 insertions, 1 deletions

diff --git a/net.c b/net.c
index 0bea81e..0059066 100644
--- a/net.c
+++ b/net.c
@@ -138,7 +138,7 @@ int redisKeepAlive(redisContext *c, int interval) {
         return REDIS_ERR;
     }
 #else
-#ifndef __sun
+#if defined(__GLIBC__) && !defined(__FreeBSD_kernel__)
     val = interval;
     if (setsockopt(fd, IPPROTO_TCP, TCP_KEEPIDLE, &val, sizeof(val)) < 0) {
         __redisSetError(c,REDIS_ERR_OTHER,strerror(errno));