1
# ===========================================================================
2
# http://www.gnu.org/software/autoconf-archive/ax_am_jobserver.html
3
# ===========================================================================
7
# AX_AM_JOBSERVER([default_value])
11
# Enables the use of make's jobserver for the purpose of parallel building
12
# by passing the -j option to make.
14
# The option --enable-jobserver is added to configure which can accept a
15
# yes, no, or an integer. The integer is the number of separate jobs to
16
# allow. If 'yes' is given, then the is assumed to be one more than the
17
# number of CPUs (determined through AX_COUNT_CPUS). If the value of no is
18
# given, then the jobserver is disabled. The default value is given by the
19
# first argument of the macro, or 'yes' if the argument is omitted.
21
# This macro makes use of AX_AM_MACROS, so you must add the following line
25
# to your Makefile.am files.
29
# Copyright (c) 2008 Michael Paul Bailey <jinxidoru@byu.net>
31
# Copying and distribution of this file, with or without modification, are
32
# permitted in any medium without royalty provided the copyright notice
33
# and this notice are preserved. This file is offered as-is, without any
38
AC_DEFUN([AX_AM_JOBSERVER], [
39
AC_REQUIRE([AX_COUNT_CPUS])
40
AC_REQUIRE([AX_AM_MACROS])
41
AC_ARG_ENABLE( jobserver,
42
[ --enable-jobserver@<:@=no/yes/@%:@@:>@ default=m4_ifval([$1],[$1],[yes])
43
Enable up to @%:@ make jobs
44
yes: enable one more than CPU count
45
],, [enable_jobserver=m4_ifval([$1],[$1],[yes])])
46
if test "x$enable_jobserver" = "xyes"; then
47
enable_jobserver=$CPU_COUNT
48
((enable_jobserver++))
50
m4_pattern_allow(AM_MAKEFLAGS)
51
if test "x$enable_jobserver" != "xno"; then
52
AC_MSG_NOTICE([added jobserver support to make for $enable_jobserver jobs])
53
AX_ADD_AM_MACRO( AM_MAKEFLAGS += -j$enable_jobserver )
added
removed
m4/ax_am_jobserver.m4
