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#!/bin/sh

# Slackware build script for perf

# Copyright 2014, Andreas Guldstrand <andreas.guldstrand@gmail.com>
# All rights reserved.
#
# Redistribution and use of this script, with or without modification, is
# permitted provided that the following conditions are met:
#
# 1. Redistributions of this script must retain the above copyright
#    notice, this list of conditions and the following disclaimer.
#
# THIS SOFTWARE IS PROVIDED BY THE AUTHOR ''AS IS'' AND ANY EXPRESS OR IMPLIED
# WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
# MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
# EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
# PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
# OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
# WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
# OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
# ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

PRGNAM=perf
VERSION=${VERSION:-3.10.17}
BUILD=${BUILD:-1}
TAG=${TAG:-_SBo}

if [ -z "$ARCH" ]; then
  case "$( uname -m )" in
    i?86) ARCH=i486 ;;
    arm*) ARCH=arm ;;
       *) ARCH=$( uname -m ) ;;
  esac
fi

CWD=$(pwd)
TMP=${TMP:-/tmp/SBo}
PKG=$TMP/package-$PRGNAM
OUTPUT=${OUTPUT:-/tmp}

if [ "$ARCH" = "i486" ]; then
  SLKCFLAGS="-O2 -march=i486 -mtune=i686"
  LIBDIRSUFFIX=""
elif [ "$ARCH" = "i686" ]; then
  SLKCFLAGS="-O2 -march=i686 -mtune=i686"
  LIBDIRSUFFIX=""
elif [ "$ARCH" = "x86_64" ]; then
  SLKCFLAGS="-O2 -fPIC"
  LIBDIRSUFFIX="64"
else
  SLKCFLAGS="-O2"
  LIBDIRSUFFIX=""
fi

set -e

SRCDIR="/usr/src/linux-$VERSION/tools"
BUILDDIR=$TMP/$PRGNAM-$VERSION

rm -rf $PKG
mkdir -p $TMP $PKG $OUTPUT
cd $TMP
rm -rf $BUILDDIR

mkdir -p $BUILDDIR/lib/lk
cd $BUILDDIR
make -C $SRCDIR/lib/lk/ O=$BUILDDIR/lib/lk
# We need -DSILENT_NO_TAINT_SUPPORT=0, -DNO_TAINT_SUPPORT=0, and
# -Wno-strict-default to compile together with perl 5.18+
make -C $SRCDIR/ perf_install O=$BUILDDIR DESTDIR=$PKG/ \
    mandir=/usr/man/ perfexecdir=/usr/libexec/perf-core \
    CFLAGS="-DSILENT_NO_TAINT_SUPPORT=0 -DNO_TAINT_SUPPORT=0" \
    -Wno-strict-default

mkdir $PKG/usr/bin
mv $PKG/bin/perf $PKG/usr/bin/perf
rm -rf $PKG/bin

find $PKG -print0 | xargs -0 file | grep -e "executable" -e "shared object" | grep ELF \
  | cut -f 1 -d : | xargs strip --strip-unneeded 2> /dev/null || true

find $PKG/usr/man -type f -exec gzip -9 {} \;
for i in $( find $PKG/usr/man -type l ) ; do ln -s $( readlink $i ).gz $i.gz ; rm $i ; done

DOCDIR=$PKG/usr/doc/$PRGNAM-$VERSION
mkdir -p $DOCDIR/Documentation

cp -a $SRCDIR/perf/command-list.txt $SRCDIR/perf/design.txt \
    $SRCDIR/perf/CREDITS $SRCDIR/../COPYING $DOCDIR
cp -a $SRCDIR/perf/Documentation/*.txt $DOCDIR/Documentation
cat $CWD/$PRGNAM.SlackBuild > $DOCDIR/$PRGNAM.SlackBuild

mkdir -p $PKG/install
cat $CWD/slack-desc > $PKG/install/slack-desc

cd $PKG
/sbin/makepkg -l y -c n $OUTPUT/$PRGNAM-$VERSION-$ARCH-$BUILD$TAG.${PKGTYPE:-tgz}