build: add a SlackBuild under assets/slackbuild

Packages the application for Slackware, following SBo conventions with
two deliberate departures: the tag is _danix rather than _SBo and the
package type is txz rather than tgz, since this is not an SBo
submission. sbolint reports exactly those two as errors and nothing
else; the template comments it warned about are gone.

Written against the install layout the build really produces, checked by
staging it: one binary, one .desktop entry and one scalable icon, no
libraries and no man or info pages. The template's .la removal, man and
info compression and perllocal.pod cleanup would all act on nothing
here, so they are left out rather than carried along as dead code.
doinst.sh keeps only the desktop-database and icon-cache updates.

The download URL and checksum are verified rather than assumed: sbodl
fetches the tarball and reports "md5sum matches OK".

Adds QTMAILDIR_BUILD_TESTS, defaulting to ON so the ordinary build is
unchanged. A packaging build has no use for the test binaries, and
building them pulls in Qt6::Test to produce nothing that ships. Note the
0.4.0 tarball predates this option, so with that source the flag is
accepted but does nothing; the README says so.

notmuch is the only dependency outside Slackware. Qt6 including
WebEngine, gmime and cmake are all stock, which is what REQUIRES
reflects.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>

1 files changed, 114 insertions, 0 deletions

diff --git a/assets/slackbuild/qtmaildir.SlackBuild b/assets/slackbuild/qtmaildir.SlackBuild
new file mode 100755
index 0000000..c968cbc
--- /dev/null
+++ b/assets/slackbuild/qtmaildir.SlackBuild
@@ -0,0 +1,114 @@
+#!/bin/bash
+
+# Slackware build script for qtmaildir
+
+# Copyright 2026 Danilo M. <danix@danix.xyz>
+# 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.
+
+cd $(dirname $0) ; CWD=$(pwd)
+
+PRGNAM=qtmaildir
+VERSION=${VERSION:-0.4.0}
+BUILD=${BUILD:-1}
+# Not _SBo: this is not an SBo submission. sbolint reports the tag and the
+# package type as errors for that reason; both are deliberate.
+TAG=${TAG:-_danix}
+PKGTYPE=${PKGTYPE:-txz}
+
+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}
+
+if [ "$ARCH" = "i586" ]; then
+  SLKCFLAGS="-O2 -march=i586 -mtune=i686"
+  LIBDIRSUFFIX=""
+elif [ "$ARCH" = "i686" ]; then
+  SLKCFLAGS="-O2 -march=i686 -mtune=i686"
+  LIBDIRSUFFIX=""
+elif [ "$ARCH" = "x86_64" ]; then
+  SLKCFLAGS="-O2 -fPIC"
+  LIBDIRSUFFIX="64"
+elif [ "$ARCH" = "aarch64" ]; 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 . \
+ \( -perm 777 -o -perm 775 -o -perm 750 -o -perm 711 -o -perm 555 \
+  -o -perm 511 \) -exec chmod 755 {} \; -o \
+ \( -perm 666 -o -perm 664 -o -perm 640 -o -perm 600 -o -perm 444 \
+  -o -perm 440 -o -perm 400 \) -exec chmod 644 {} \;
+
+# QTMAILDIR_BUILD_TESTS=OFF skips the test suite, which needs Qt6::Test and
+# produces nothing that ships.
+mkdir -p build
+cd build
+  cmake \
+    -DCMAKE_C_FLAGS:STRING="$SLKCFLAGS" \
+    -DCMAKE_CXX_FLAGS:STRING="$SLKCFLAGS" \
+    -DCMAKE_INSTALL_PREFIX=/usr \
+    -DLIB_SUFFIX=${LIBDIRSUFFIX} \
+    -DQTMAILDIR_BUILD_TESTS=OFF \
+    -DCMAKE_BUILD_TYPE=Release ..
+  make
+  make install/strip DESTDIR=$PKG
+cd ..
+
+# The package installs one binary, one .desktop entry and one scalable icon.
+# No libraries, no man or info pages, so the usual .la removal, man/info
+# compression and perllocal.pod cleanup have nothing to act on here.
+
+mkdir -p $PKG/usr/doc/$PRGNAM-$VERSION
+cp -a \
+  CHANGELOG.md LICENSE README.md \
+  $PKG/usr/doc/$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
+cat $CWD/doinst.sh > $PKG/install/doinst.sh
+
+cd $PKG
+/sbin/makepkg -l y -c n $OUTPUT/$PRGNAM-$VERSION-$ARCH-$BUILD$TAG.$PKGTYPE