check for sys/sendfile.h header instead of __linux__

Non-Linux OSes may eventually gain a Linux-compatible sendfile.

2 files changed, 5 insertions, 2 deletions

diff --git a/configure.ac b/configure.ac
index 1911f4d..4e66f84 100644
--- a/configure.ac
+++ b/configure.ac
@@ -40,6 +40,8 @@ AC_CHECK_FUNCS([epoll_ctl], [HAVE_EPOLL=1], [HAVE_EPOLL=0])
 AC_SUBST(HAVE_EPOLL)
 AM_CONDITIONAL(HAVE_EPOLL, test "x$HAVE_EPOLL" = "x1")
 
+AC_CHECK_HEADERS([sys/sendfile.h])
+
 dnl libkqueue should work in the future
 AC_CHECK_FUNCS([kqueue])
 
diff --git a/http_get.c b/http_get.c
index acca0df..eb6c5a8 100644
--- a/http_get.c
+++ b/http_get.c
@@ -6,9 +6,10 @@
 #include "cmogstored.h"
 #include "http.h"
 #if defined(HAVE_SENDFILE)
-#  if defined(__linux__)
+#  ifdef HAVE_SYS_SENDFILE_H /* Linux */
 #    include <sys/sendfile.h>
-#  else
+#  endif
+#  ifndef __linux__
 /*
  * make BSD sendfile look like Linux for now...
  * we can support SF_NODISKIO later