| # =========================================================================== |
| # http://www.gnu.org/software/autoconf-archive/ax_am_jobserver.html |
| # =========================================================================== |
| # |
| # SYNOPSIS |
| # |
| # AX_AM_JOBSERVER([default_value]) |
| # |
| # DESCRIPTION |
| # |
| # Enables the use of make's jobserver for the purpose of parallel building |
| # by passing the -j option to make. |
| # |
| # The option --enable-jobserver is added to configure which can accept a |
| # yes, no, or an integer. The integer is the number of separate jobs to |
| # allow. If 'yes' is given, then the is assumed to be one more than the |
| # number of CPUs (determined through AX_COUNT_CPUS). If the value of no is |
| # given, then the jobserver is disabled. The default value is given by the |
| # first argument of the macro, or 'yes' if the argument is omitted. |
| # |
| # This macro makes use of AX_AM_MACROS, so you must add the following line |
| # |
| # @INC_AMINCLUDE@ |
| # |
| # to your Makefile.am files. |
| # |
| # LICENSE |
| # |
| # Copyright (c) 2008 Michael Paul Bailey <jinxidoru@byu.net> |
| # |
| # Copying and distribution of this file, with or without modification, are |
| # permitted in any medium without royalty provided the copyright notice |
| # and this notice are preserved. This file is offered as-is, without any |
| # warranty. |
| |
| #serial 7.1 |
| |
| AC_DEFUN([AX_AM_JOBSERVER], [ |
| AC_REQUIRE([AX_COUNT_CPUS]) |
| AC_REQUIRE([AX_AM_MACROS]) |
| AC_ARG_ENABLE( jobserver, |
| [ --enable-jobserver@<:@=no/yes/@%:@@:>@ default=m4_ifval([$1],[$1],[yes]) |
| Enable up to @%:@ make jobs |
| yes: enable one more than CPU count |
| ],, [enable_jobserver=m4_ifval([$1],[$1],[yes])]) |
| if test "x$enable_jobserver" = "xyes"; then |
| let enable_jobserver=$CPU_COUNT+1 |
| fi |
| m4_pattern_allow(AM_MAKEFLAGS) |
| if test "x$enable_jobserver" != "xno"; then |
| AC_MSG_NOTICE([added jobserver support to make for $enable_jobserver jobs]) |
| AX_ADD_AM_MACRO( AM_MAKEFLAGS += -j$enable_jobserver ) |
| fi |
| ]) |
