commit 751bcc3981d80594a3943166401af15b76781a5b
author Marc-André Lureau <marcandre.lureau@redhat.com> Fri Oct 09 17:17:16 2015 +0200
committer Michael S. Tsirkin <mst@redhat.com> Thu Oct 22 14:34:48 2015 +0300
tree 30f956e0a8972803b237905913b79e198b716113
parent 22de58fe152d68b248bc14efd7affe72286079e5

configure: probe for memfd

Check if memfd_create() is part of system libc.

Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Tested-by: Thibaut Collet <thibaut.collet@6wind.com>

configure

diff --git a/configure b/configure
index f08327e..7b5fcd2 100755
--- a/configure
+++ b/configure
@@ -3495,6 +3495,22 @@
   eventfd=yes
 fi
 
+# check if memfd is supported
+memfd=no
+cat > $TMPC << EOF
+#include <sys/memfd.h>
+
+int main(void)
+{
+    return memfd_create("foo", MFD_ALLOW_SEALING);
+}
+EOF
+if compile_prog "" "" ; then
+  memfd=yes
+fi
+
+
+
 # check for fallocate
 fallocate=no
 cat > $TMPC << EOF
@@ -4889,6 +4905,9 @@
 if test "$eventfd" = "yes" ; then
   echo "CONFIG_EVENTFD=y" >> $config_host_mak
 fi
+if test "$memfd" = "yes" ; then
+  echo "CONFIG_MEMFD=y" >> $config_host_mak
+fi
 if test "$fallocate" = "yes" ; then
   echo "CONFIG_FALLOCATE=y" >> $config_host_mak
 fi