progs/perftest.c: Report cycle counts per operation where possible.

[catacomb] / configure.ac

diff --git a/configure.ac b/configure.ac
index f8ad8b7..a2af5bf 100644 (file)
--- a/configure.ac
+++ b/configure.ac
@@ -278,6 +278,9 @@ AC_CHECK_HEADERS([sys/auxv.h])
 AC_CHECK_HEADERS([linux/auxvec.h])
 AC_CHECK_FUNCS([getauxval])
 
+dnl Some equipment for measuring CPU performance.
+AC_CHECK_HEADERS([linux/perf_event.h])
+
 dnl Find the bit lengths of the obvious integer types.  This will be useful
 dnl when deciding on a representation for multiprecision integers.
 type_bits="" type_bits_sep=""