X-Git-Url: http://git.lttng.org/?a=blobdiff_plain;f=configure.ac;h=d1d605bd895b509787b20c6a37d3bde7e6518994;hb=5a9970886c0ba9b21f57cff88e71d18f60ebdac6;hp=bc8d0584a07ed714e1ccb9edbfeaf1950ac42d47;hpb=254ebaf34ca0a7c18da1efbc561a1985d815b2d1;p=userspace-rcu.git

diff --git a/configure.ac b/configure.ac
index bc8d058..d1d605b 100644
--- a/configure.ac
+++ b/configure.ac
@@ -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])