#!/bin/bash
# Slackware build script for tigervnc
# Written 2026-09-23 for Parted Magic.  There was no recipe on file for the
# tigervnc that shipped in 26.09_3 (1.12.0), so this one is new, not recovered.
#
# Configuration choices are taken from the SHIPPED 1.12.0 binaries so the
# rebuild lands in the same place:
#   - font path, xkb paths and serverconfig path read out of the shipped Xvnc
#   - PAM on (shipped Xvnc and vncviewer both link libpam)
#   - H.264 OFF (the shipped vncviewer links no libavcodec)

set -e
cd "$(dirname "$0")" ; CWD=$(pwd)

PRGNAM=tigervnc
VERSION=${VERSION:-1.16.2}
XORGVER=${XORGVER:-21.1.24}
BUILD=${BUILD:-1}
TAG=${TAG:-_pmagic}
PKGTYPE=${PKGTYPE:-txz}
ARCH=${ARCH:-x86_64}

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

TMP=${TMP:-/tmp/pm-build}
PKG=$TMP/package-$PRGNAM
OUTPUT=${OUTPUT:-$TMP}
NUMJOBS=${NUMJOBS:--j8}

SLKCFLAGS="-O2 -fPIC"
FONTPATH="/usr/share/fonts/local,/usr/share/fonts/TTF,/usr/share/fonts/OTF,/usr/share/fonts/Type1,/usr/share/fonts/misc,/usr/share/fonts/CID,/usr/share/fonts/75dpi/:unscaled,/usr/share/fonts/100dpi/:unscaled,/usr/share/fonts/75dpi,/usr/share/fonts/100dpi,/usr/share/fonts/cyrillic"

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

# ---- part 1: viewer, common libraries, x0vncserver -----------------------
# IN-TREE on purpose.  unix/xserver/hw/vnc/Makefile.am resolves
#   TIGERVNC_SRCDIR = $(abspath $(top_srcdir)/../..)
#   TIGERVNC_BUILDDIR = $(abspath $(top_builddir)/../..)
# from unix/xserver, so both only point at the tigervnc root when the cmake
# build and the xserver build share that root.  An out-of-tree build makes
# them point at the build directory and hw/vnc then cannot find
# common/core/Configuration.h.
cmake -G "Unix Makefiles" \
  -DCMAKE_C_FLAGS:STRING="$SLKCFLAGS" \
  -DCMAKE_CXX_FLAGS:STRING="$SLKCFLAGS" \
  -DCMAKE_INSTALL_PREFIX=/usr \
  -DCMAKE_INSTALL_LIBDIR=lib64 \
  -DCMAKE_INSTALL_MANDIR=/usr/man \
  -DCMAKE_INSTALL_SYSCONFDIR=/etc \
  -DBUILD_VIEWER=ON \
  -DENABLE_NLS=ON \
  -DENABLE_H264=OFF \
  -DENABLE_GNUTLS=ON \
  -DENABLE_NETTLE=ON \
  -DCMAKE_BUILD_TYPE=Release \
  .
make $NUMJOBS
make install DESTDIR="$PKG"

# ---- part 2: Xvnc and the libvnc Xorg module ----------------------------
# Built against the SAME xorg-server the image ships, so the module matches
# the running server's ABI.
tar xf "$CWD/xorg-server-$XORGVER.tar.xz" -C "$TMP"
cp -R "$TMP/xorg-server-$XORGVER"/* unix/xserver/
cd unix/xserver
patch -p1 < ../../unix/xserver21.patch
cd "$TMP/$PRGNAM-$VERSION"
# upstream 1.16 leaves CORE_LIB undefined, so libcore is never linked into the
# Xorg module and libvnc.so will not load.  See the patch header.
patch -p1 < "$CWD/$PRGNAM-$VERSION-libvnc-link.patch"
cd unix/xserver
autoreconf -fiv
./configure \
  --prefix=/usr \
  --libdir=/usr/lib64 \
  --mandir=/usr/man \
  --sysconfdir=/etc \
  --with-pic --without-dtrace --disable-static --disable-dri \
  --disable-xinerama --disable-xvfb --disable-xnest --disable-xorg \
  --disable-dmx --disable-xwin --disable-xephyr --disable-kdrive \
  --disable-config-hal --disable-config-udev --disable-dri2 --enable-glx \
  --enable-pam \
  --with-default-font-path="$FONTPATH" \
  --with-xkb-path=/usr/share/X11/xkb \
  --with-xkb-output=/var/lib/xkb \
  --with-xkb-bin-directory=/usr/bin \
  --with-serverconfig-path=/usr/lib64/xorg
make $NUMJOBS
make install DESTDIR="$PKG"
cd "$TMP/$PRGNAM-$VERSION"

# ---- packaging ----------------------------------------------------------
# 1.16 no longer installs the snippet that loads the Xorg module; 1.12.0
# shipped one and without it libvnc.so is never loaded.  Take upstream's.
mkdir -p "$PKG/etc/X11/xorg.conf.d"
cp -a contrib/packages/rpm/el9/SOURCES/10-libvnc.conf \
      "$PKG/etc/X11/xorg.conf.d/10-libvnc.conf"

# no systemd in this image
rm -rf "$PKG/usr/lib/systemd" "$PKG/usr/lib/tmpfiles.d"
rmdir "$PKG/usr/lib" 2>/dev/null || true

# Slackware keeps documentation in /usr/doc
if [ -d "$PKG/usr/share/doc" ]; then
  mkdir -p "$PKG/usr/doc/$PRGNAM-$VERSION"
  cp -a "$PKG/usr/share/doc/$PRGNAM"/* "$PKG/usr/doc/$PRGNAM-$VERSION/" 2>/dev/null || true
  rm -rf "$PKG/usr/share/doc"
fi

# config files ship as .new so an upgrade never clobbers a running setup
for f in "$PKG"/etc/tigervnc/* "$PKG"/etc/X11/xorg.conf.d/*.conf "$PKG"/etc/pam.d/*; do
  [ -f "$f" ] && [ "${f##*.}" != new ] && mv "$f" "$f.new"
done

rm -f "$PKG"/usr/lib64/xorg/modules/extensions/libvnc.la || true
find "$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 {} \; 2>/dev/null || true

mkdir -p "$PKG/usr/doc/$PRGNAM-$VERSION"
cp -a LICENCE.TXT README.rst BUILDING.txt "$PKG/usr/doc/$PRGNAM-$VERSION/" 2>/dev/null || true
cp -a "$CWD/$PRGNAM.SlackBuild" "$CWD/$PRGNAM.info" "$PKG/usr/doc/$PRGNAM-$VERSION/" 2>/dev/null || true

mkdir -p "$PKG/install"
cat > "$PKG/install/slack-desc" <<'EOD'
tigervnc: tigervnc (VNC server and client)
tigervnc:
tigervnc: Virtual Network Computing (VNC) is a remote display system which
tigervnc: allows you to view a desktop environment from anywhere on the Internet
tigervnc: and from a wide variety of machine architectures.
tigervnc:
tigervnc: Homepage: https://tigervnc.org/
tigervnc:
tigervnc:
tigervnc:
tigervnc:
EOD
cat > "$PKG/install/doinst.sh" <<'EOD'
config() {
  NEW="$1"; OLD="$(dirname $NEW)/$(basename $NEW .new)"
  if [ ! -r $OLD ]; then mv $NEW $OLD
  elif [ "$(cat $OLD | md5sum)" = "$(cat $NEW | md5sum)" ]; then rm $NEW; fi
}
for f in etc/tigervnc/*.new etc/pam.d/*.new etc/X11/xorg.conf.d/*.new ; do
  [ -e "$f" ] && config "$f"
done
EOD

cd "$PKG"
/sbin/makepkg -l y -c n "$OUTPUT/$PRGNAM-$VERSION-$ARCH-$BUILD$TAG.$PKGTYPE"