configure: check for splice() system call; sendfile isn't all apropriate in older...

[citadel.git] / libcitadel / configure.in

diff --git a/libcitadel/configure.in b/libcitadel/configure.in
index faba4c5027813b59a4db96cf0522987347ff6315..8438d415c6ec65041c724a736d3508f28a4152a5 100755 (executable)
--- a/libcitadel/configure.in
+++ b/libcitadel/configure.in
@@ -78,6 +78,32 @@ AC_CHECK_HEADER(sys/sendfile.h, [AC_DEFINE(LINUX_SENDFILE, [], [whether we have
 dnl TODO: we might need to check for the actual syntax....  
 
 
+AC_MSG_CHECKING([whether your system knows about splice()]) 
+AC_TRY_COMPILE([
+#define _GNU_SOURCE
+#include <unistd.h>
+#include <fcntl.h>
+],
+[
+       ssize_t sent, pipesize;
+       int fd, SplicePipe[2];
+       pipesize = splice(fd, NULL, 
+                         SplicePipe[1], NULL, 
+                         1, 
+                         SPLICE_F_MORE | SPLICE_F_MOVE|SPLICE_F_NONBLOCK);
+],
+               [
+                 ok_splice=yes
+                 AC_DEFINE(LINUX_SPLICE, [], [whether we have the linux splice api])
+                 AC_MSG_RESULT([yes])
+               ],
+               [ 
+                 ok_splice=no
+                 AC_MSG_RESULT([no])
+               ]
+)
+
+
 AC_CHECK_HEADERS(iconv.h)