#!/bin/bash
ulimit -s unlimited
shopt -s extglob

# Copyright 2025 Stuart Winter, Donostia, Spain.
# 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.

# Record toolchain & other info for the build log:
slackbuildinfo

# Paths to skeleton port's source & real Slackware source tree:
slackset_var_cwds

# Detect whether we're building for /patches:
# This function sets the variable 'SLACKPATCHING'
slack_findpkgstore_is_stablerelease

# Temporary build locations:
export TMPBUILD=$TMP/build-$PKGNAM
export PKG=$TMP/package-$PKGNAM
mkpkgdirs # Delete & re-create temporary directories then cd into $TMPBUILD

# Extract source:
tar xf $PORTCWD/sources/raspi-utils*tar.*!(*sign|*asc|*sig)
cd rasp*/ || failextract
slackhousekeeping

# Apply patches:
# Switch the device name to the one that exists in mainline Linux Kernel,
# and was used in the old 'rpi-userland' package:
sed -i 's?/dev/vcio?/dev/vchiq?g' vcgencmd/vcgencmd.c vcmailbox/vcmailbox.c || failpatch

# Configure:
mkdir cmake-build
pushd cmake-build
cmake \
   -DCMAKE_BUILD_TYPE=Release \
   -DCMAKE_C_FLAGS="$SLKCFLAGS" \
   -DCMAKE_INSTALL_PREFIX=/usr \
   -DCMAKE_INSTALL_LIBDIR=lib${LIBDIRSUFFIX} \
   .. || failconfig

# Build:
make $NUMJOBS || make || failmake

# Install into package:
make install DESTDIR=$PKG || failinstall
popd

# Move the man pages into the Slackware location:
mv -fv $PKG/usr/share/man $PKG/usr/
rmdir $PKG/usr/share

# overlaycheck - A tool for validating the overlay files and README in a kernel source tree
# I think we can dispense this, plus it includes a text file within /usr/bin.
rm -rv $PKG/usr/bin/overlaycheck*

# We don't want any headers or pkgconfig stuff, as it breaks X and mesa (IIRC).
# If you want to go down this path, uncomment these lines.
# For Slackware ARM we only supply this rpi-userland package as it's a dependency
# for the rpi-eeprom tools.
#rm -rfv $PKG/usr/{include,lib${LIBDIRSUFFIX}/pkgconfig}

# Add documentation:
mkdir -vpm755 $PKG/usr/doc/$PKGNAM-$VERSION
cp -fav \
  LICENCE README* \
  $PKG/usr/doc/$PKGNAM-$VERSION
#changelogliposuction ChangeLog $PKGNAM $VERSION # Trim down a "ChangeLog" file

# Apply generic Slackware packaging policies:
cd $PKG
slackstripall        # strip all .a archives and all ELFs
#slackstriprpaths     # strip rpaths
slack_delete_lafiles # delete usr/lib{,64}/*.la
slackgzpages -i      # compress man & info pages and delete usr/info/dir
slackslack           # set standard Slackware file/dir permissions and ownerships
slackdesc            # install slack-desc and doinst.sh
slackmp         # run makepkg -l y -c n

# Perform any final checks on the package:
cd $PKG
slackhlinks     # search for any hard links