+# For the turbostat plugin
+have_asm_msrindex_h="no"
+AC_CHECK_HEADERS(asm/msr-index.h, [have_asm_msrindex_h="yes"])
+
+if test "x$have_asm_msrindex_h" = "xyes"
+then
+ AC_CACHE_CHECK([whether asm/msr-index.h has MSR_CORE_C3_RESIDENCY],
+ [c_cv_have_usable_asm_msrindex_h],
+ AC_COMPILE_IFELSE([AC_LANG_PROGRAM(
+[[[
+#include<asm/msr-index.h>
+]]],
+[[[
+int y = MSR_CORE_C3_RESIDENCY;
+return(y);
+]]]
+ )],
+ [c_cv_have_usable_asm_msrindex_h="yes"],
+ [c_cv_have_usable_asm_msrindex_h="no"],
+ )
+ )
+fi
+
+have_cpuid_h="no"
+AC_CHECK_HEADERS(cpuid.h, [have_cpuid_h="yes"])
+
+AC_CHECK_HEADERS(sys/capability.h)