| From: Mike Hommey <mh+mozilla@glandium.org> |
| Date: Mon, 21 Mar 2011 18:31:12 +0100 |
| Subject: Bug 589744 - Fallback to perf measurement stub when perf_event_open |
| syscall isn't supported. r=ted |
| |
| --- |
| js/src/configure.in | 11 ++++++++++- |
| 1 files changed, 10 insertions(+), 1 deletions(-) |
| |
| --- a/js/src/configure.in |
| +++ b/js/src/configure.in |
| @@ -3477,7 +3477,16 @@ case $target in |
| esac |
| |
| dnl Performance measurement headers. |
| -AC_CHECK_HEADER(linux/perf_event.h, HAVE_LINUX_PERF_EVENT_H=1) |
| +AC_CHECK_HEADER(linux/perf_event.h, |
| + [AC_CACHE_CHECK(for perf_event_open system call,ac_cv_perf_event_open, |
| + [AC_TRY_COMPILE([#include <sys/syscall.h>],[return sizeof(__NR_perf_event_open);], |
| + ac_cv_perf_event_open=yes, |
| + ac_cv_perf_event_open=no)])]) |
| +if test "$ac_cv_perf_event_open" = "yes"; then |
| + HAVE_LINUX_PERF_EVENT_H=1 |
| +else |
| + HAVE_LINUX_PERF_EVENT_H= |
| +fi |
| AC_SUBST(HAVE_LINUX_PERF_EVENT_H) |
| |
| dnl Checks for libraries. |
