build/autoconf/linux.m4@6474c204b198 (annotated)
build/autoconf/linux.m4
Wed, 31 Dec 2014 06:09:35 +0100
- author
- Michael Schloh von Bennewitz <michael@schloh.com>
- date
- Wed, 31 Dec 2014 06:09:35 +0100
- changeset 0
- 6474c204b198
- permissions
- -rw-r--r--
Cloned upstream origin tor-browser at tor-browser-31.3.0esr-4.5-1-build1
revision ID fc1c9ff7c1b2defdbc039f12214767608f46423f for hacking purpose.
| michael@0 | 1 | dnl This Source Code Form is subject to the terms of the Mozilla Public |
| michael@0 | 2 | dnl License, v. 2.0. If a copy of the MPL was not distributed with this |
| michael@0 | 3 | dnl file, You can obtain one at http://mozilla.org/MPL/2.0/. |
| michael@0 | 4 | |
| michael@0 | 5 | AC_DEFUN([MOZ_LINUX_PERF_EVENT], |
| michael@0 | 6 | [ |
| michael@0 | 7 | |
| michael@0 | 8 | MOZ_ARG_WITH_STRING(linux-headers, |
| michael@0 | 9 | [ --with-linux-headers=DIR |
| michael@0 | 10 | location where the Linux kernel headers can be found], |
| michael@0 | 11 | linux_headers=$withval) |
| michael@0 | 12 | |
| michael@0 | 13 | LINUX_HEADERS_INCLUDES= |
| michael@0 | 14 | |
| michael@0 | 15 | if test "$linux_headers"; then |
| michael@0 | 16 | LINUX_HEADERS_INCLUDES="-I$linux_headers" |
| michael@0 | 17 | fi |
| michael@0 | 18 | |
| michael@0 | 19 | _SAVE_CFLAGS="$CFLAGS" |
| michael@0 | 20 | CFLAGS="$CFLAGS $LINUX_HEADERS_INCLUDES" |
| michael@0 | 21 | |
| michael@0 | 22 | dnl Performance measurement headers. |
| michael@0 | 23 | MOZ_CHECK_HEADER(linux/perf_event.h, |
| michael@0 | 24 | [AC_CACHE_CHECK(for perf_event_open system call,ac_cv_perf_event_open, |
| michael@0 | 25 | [AC_TRY_COMPILE([#include <asm/unistd.h>],[return sizeof(__NR_perf_event_open);], |
| michael@0 | 26 | ac_cv_perf_event_open=yes, |
| michael@0 | 27 | ac_cv_perf_event_open=no)])]) |
| michael@0 | 28 | if test "$ac_cv_perf_event_open" = "yes"; then |
| michael@0 | 29 | HAVE_LINUX_PERF_EVENT_H=1 |
| michael@0 | 30 | else |
| michael@0 | 31 | HAVE_LINUX_PERF_EVENT_H= |
| michael@0 | 32 | LINUX_HEADERS_INCLUDES= |
| michael@0 | 33 | fi |
| michael@0 | 34 | AC_SUBST(HAVE_LINUX_PERF_EVENT_H) |
| michael@0 | 35 | AC_SUBST(LINUX_HEADERS_INCLUDES) |
| michael@0 | 36 | |
| michael@0 | 37 | CFLAGS="$_SAVE_CFLAGS" |
| michael@0 | 38 | |
| michael@0 | 39 | ]) |
