1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/make/aix/makefiles/adjust-mflags.sh Fri Sep 06 20:08:29 2013 +0200
1.3 @@ -0,0 +1,87 @@
1.4 +#! /bin/sh
1.5 +#
1.6 +# Copyright (c) 1999, 2013, Oracle and/or its affiliates. All rights reserved.
1.7 +# DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
1.8 +#
1.9 +# This code is free software; you can redistribute it and/or modify it
1.10 +# under the terms of the GNU General Public License version 2 only, as
1.11 +# published by the Free Software Foundation.
1.12 +#
1.13 +# This code is distributed in the hope that it will be useful, but WITHOUT
1.14 +# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
1.15 +# FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
1.16 +# version 2 for more details (a copy is included in the LICENSE file that
1.17 +# accompanied this code).
1.18 +#
1.19 +# You should have received a copy of the GNU General Public License version
1.20 +# 2 along with this work; if not, write to the Free Software Foundation,
1.21 +# Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
1.22 +#
1.23 +# Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
1.24 +# or visit www.oracle.com if you need additional information or have any
1.25 +# questions.
1.26 +#
1.27 +#
1.28 +
1.29 +# This script is used only from top.make.
1.30 +# The macro $(MFLAGS-adjusted) calls this script to
1.31 +# adjust the "-j" arguments to take into account
1.32 +# the HOTSPOT_BUILD_JOBS variable. The default
1.33 +# handling of the "-j" argument by gnumake does
1.34 +# not meet our needs, so we must adjust it ourselves.
1.35 +
1.36 +# This argument adjustment applies to two recursive
1.37 +# calls to "$(MAKE) $(MFLAGS-adjusted)" in top.make.
1.38 +# One invokes adlc.make, and the other invokes vm.make.
1.39 +# The adjustment propagates the desired concurrency
1.40 +# level down to the sub-make (of the adlc or vm).
1.41 +# The default behavior of gnumake is to run all
1.42 +# sub-makes without concurrency ("-j1").
1.43 +
1.44 +# Also, we use a make variable rather than an explicit
1.45 +# "-j<N>" argument to control this setting, so that
1.46 +# the concurrency setting (which must be tuned separately
1.47 +# for each MP system) can be set via an environment variable.
1.48 +# The recommended setting is 1.5x to 2x the number of available
1.49 +# CPUs on the MP system, which is large enough to keep the CPUs
1.50 +# busy (even though some jobs may be I/O bound) but not too large,
1.51 +# we may presume, to overflow the system's swap space.
1.52 +
1.53 +set -eu
1.54 +
1.55 +default_build_jobs=4
1.56 +
1.57 +case $# in
1.58 +[12]) true;;
1.59 +*) >&2 echo "Usage: $0 ${MFLAGS} ${HOTSPOT_BUILD_JOBS}"; exit 2;;
1.60 +esac
1.61 +
1.62 +MFLAGS=$1
1.63 +HOTSPOT_BUILD_JOBS=${2-}
1.64 +
1.65 +# Normalize any -jN argument to the form " -j${HBJ}"
1.66 +MFLAGS=`
1.67 + echo "$MFLAGS" \
1.68 + | sed '
1.69 + s/^-/ -/
1.70 + s/ -\([^ ][^ ]*\)j/ -\1 -j/
1.71 + s/ -j[0-9][0-9]*/ -j/
1.72 + s/ -j\([^ ]\)/ -j -\1/
1.73 + s/ -j/ -j'${HOTSPOT_BUILD_JOBS:-${default_build_jobs}}'/
1.74 + ' `
1.75 +
1.76 +case ${HOTSPOT_BUILD_JOBS} in \
1.77 +
1.78 +'') case ${MFLAGS} in
1.79 + *\ -j*)
1.80 + >&2 echo "# Note: -jN is ineffective for setting parallelism in this makefile."
1.81 + >&2 echo "# please set HOTSPOT_BUILD_JOBS=${default_build_jobs} in the command line or environment."
1.82 + esac;;
1.83 +
1.84 +?*) case ${MFLAGS} in
1.85 + *\ -j*) true;;
1.86 + *) MFLAGS="-j${HOTSPOT_BUILD_JOBS} ${MFLAGS}";;
1.87 + esac;;
1.88 +esac
1.89 +
1.90 +echo "${MFLAGS}"
