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

[catacomb] / configure.ac

diff --git a/configure.ac b/configure.ac
index 1643ad0..a2af5bf 100644 (file)
--- a/configure.ac
+++ b/configure.ac
@@ -78,7 +78,8 @@ AC_DEFUN([catacomb_CPU_FAMILIES],
    $1([i[[3-6]]86,*], [x86], [sysv])
    $1([x86_64,cygwin], [amd64], [win])
    $1([x86_64,*], [amd64], [sysv])
-   $1([arm,* | armv*,*], [armel], [std])])
+   $1([arm,* | armv*,*], [armel], [std])
+   $1([aarch64,*], [arm64], [std])])
 
 dnl A utility to clear the `seen' flags, used so as to process each CPU or
 dnl ABI once.
@@ -277,6 +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=""