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#!/bin/bash

# Slackware build script for xtruss.

# Written by V'yacheslav Stetskevych
# Modified by B. Watson

# Licensed under the WTFPL. See http://www.wtfpl.net/txt/copying/ for details.

# 20230103 bkw: update for v20211025.c25bf48. can't build older versions
# as upstream has switched to cmake.

# 20210907 bkw: update for v20210225.2addd50

# 20201102 bkw:
# - update for v20200918.a94a153
# - switch to self-hosted source, as upstream disappears the old source
#   immediately on every new release.

cd $(dirname $0) ; CWD=$(pwd)

PRGNAM=xtruss
VERSION=${VERSION:-20211025.c25bf48}
BUILD=${BUILD:-1}
TAG=${TAG:-_SBo}
PKGTYPE=${PKGTYPE:-tgz}

if [ -z "$ARCH" ]; then
  case "$( uname -m )" in
    i?86) ARCH=i586 ;;
    arm*) ARCH=arm ;;
       *) ARCH=$( uname -m ) ;;
  esac
fi

if [ ! -z "${PRINT_PACKAGE_NAME}" ]; then
  echo "$PRGNAM-$VERSION-$ARCH-$BUILD$TAG.$PKGTYPE"
  exit 0
fi

TMP=${TMP:-/tmp/SBo}
PKG=$TMP/package-$PRGNAM
OUTPUT=${OUTPUT:-/tmp}

# Note: upstream default adds -O3 after our flags :(
if [ "$ARCH" = "i586" ]; then
  SLKCFLAGS="-O2 -march=i586 -mtune=i686"
  LIBDIRSUFFIX=""
elif [ "$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

rm -rf $PKG
mkdir -p $TMP $PKG $OUTPUT
cd $TMP
rm -rf $PRGNAM-$VERSION
tar xvf $CWD/$PRGNAM-$VERSION.tar.gz
cd $PRGNAM-$VERSION
chown -R root:root .
find -L .  -perm /111 -a \! -perm 755 -a -exec chmod 755 {} \+ -o \
        \! -perm /111 -a \! -perm 644 -a -exec chmod 644 {} \+

mkdir -p build
cd build
  cmake \
    -DCMAKE_C_FLAGS:STRING="$SLKCFLAGS" \
    -DCMAKE_INSTALL_PREFIX=/usr \
    -DCMAKE_BUILD_TYPE=Release ..
  make VERBOSE=1
  make install/strip DESTDIR=$PKG
cd ..

# 20230103 bkw: to avoid having halibut as a dependency, use a
# prebuilt man page.
mkdir -p $PKG/usr/man/man1
gzip -9c < $CWD/$PRGNAM.1 > $PKG/usr/man/man1/$PRGNAM.1.gz

# in case halibut actually is installed (nothing in /usr/share but man/)
rm -rf $PKG/usr/share

mkdir -p $PKG/usr/doc/$PRGNAM-$VERSION
cp -a LICENCE README $PKG/usr/doc/$PRGNAM-$VERSION
cat $CWD/$PRGNAM.SlackBuild > $PKG/usr/doc/$PRGNAM-$VERSION/$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