Test for CPU_SET

[userspace-rcu.git] / configure.ac

diff --git a/configure.ac b/configure.ac
index 5b0990dabe6c0ac241609b91728bdb1153b84b8f..d1d605bd895b509787b20c6a37d3bde7e6518994 100644 (file)
--- a/configure.ac
+++ b/configure.ac
@@ -2,7 +2,7 @@
 # Process this file with autoconf to produce a configure script.
 
 
-AC_INIT([userspace-rcu],[0.7.5],[mathieu dot desnoyers at efficios dot com])
+AC_INIT([userspace-rcu],[0.7.6],[mathieu dot desnoyers at efficios dot com])
 
 # Following the numbering scheme proposed by libtool for the library version
 # http://www.gnu.org/software/libtool/manual/html_node/Updating-version-info.html
@@ -215,6 +215,26 @@ AC_CHECK_FUNCS([sched_setaffinity],[
                        AC_MSG_RESULT([no])
                ])
 
+               # Confirm that we have CPU_SET, and it actually works.
+               AC_MSG_CHECKING([whether CPU_SET works])
+               AH_TEMPLATE([HAVE_CPU_SET], [Defined to 1 if we have CPU_SET and it works])
+               AC_COMPILE_IFELSE([AC_LANG_SOURCE([[
+                               #define _GNU_SOURCE
+                               #include <sched.h>
+                               int main()
+                               {
+                                       cpu_set_t foo, mask; CPU_SET (0, &foo);
+                                       return 0;
+                               }
+                       ]])
+               ],[
+                       # Works!
+                       AC_DEFINE(HAVE_CPU_SET, 1)
+                       AC_MSG_RESULT([yes])
+               ],[
+                       AC_MSG_RESULT([no])
+               ])
+
                # Check how many arguments does sched_setaffinity take.
                # Should be 3 or 2.
                AC_MSG_CHECKING([how many arguments sched_setaffinity takes])