Changeset e8e9052 for configure.in

Timestamp:

05/18/18 14:54:59 (2 years ago)

Author:

Shane Alcock <salcock@…>

Branches:

cachetimestamps, develop, master, rc-4.0.4, ringdecrementfix, ringperformance

Children:

5577521

Parents:

a7e4f40

Message:

Fix build error on older kernels that don't have memfd_create

We now fall back to shm_open() if memfd_create isn't available.

File:

• configure.in (modified) (1 diff)

configure.in

@@ -554 +554 @@
 
 
+have_memfd_create=no
+AC_RUN_IFELSE([AC_LANG_PROGRAM([
+#include <sys/syscall.h>
+],[
+#ifndef __NR_memfd_create
+exit(1)
+#endif
+])], [have_memfd_create=yes])
+
+if test "$have_memfd_create" = "yes"; then
+        AC_DEFINE(HAVE_MEMFD_CREATE, 1, [Set to 1 if kernel supports memfd_create syscall])
+fi
+
 # Stupid AC_SEARCH_LIB appends stuff to LIBS even when I don't want it to, so
 # just set libs to null here to avoid linking against them by default