diff --git a/Apps/abakus/README b/Apps/abakus/README
new file mode 100644
index 0000000..b9c0622
--- /dev/null
+++ b/Apps/abakus/README
@@ -0,0 +1,2 @@
+The MPFR library for high-precision mathematics is used if detected.
+ 
diff --git a/Apps/gwenview-i18n/gwenview-i18n.SlackBuild b/Apps/gwenview-i18n/gwenview-i18n.SlackBuild
index a8cc21f..0d3ac31 100755
--- a/Apps/gwenview-i18n/gwenview-i18n.SlackBuild
+++ b/Apps/gwenview-i18n/gwenview-i18n.SlackBuild
@@ -25,7 +25,10 @@
 
 PRGNAM=gwenview-i18n
 PKGNAM=$TDEPFX$PRGNAM
-[[ $PRE_DOWNLOAD != yes ]] && [[ $I18N == "" ]] && echo -e "\033[39;1m\nYou have tried to build $PRGNAM without selecting any language(s)\n\033[0m" && exit
+[[ $PRE_DOWNLOAD != yes ]] && [[ $I18N == "" ]] && \
+echo -e "\033[39;1m
+  You have tried to build $PRGNAM without selecting any language(s)
+\033[0m" && exit
 VERSION=$TDEVERSION
 BUILD=${BUILD:-1}
 TAG=${TAG:-_tde}
diff --git a/Apps/k3b-i18n/k3b-i18n.SlackBuild b/Apps/k3b-i18n/k3b-i18n.SlackBuild
index 7f8361c..59528a2 100755
--- a/Apps/k3b-i18n/k3b-i18n.SlackBuild
+++ b/Apps/k3b-i18n/k3b-i18n.SlackBuild
@@ -25,7 +25,10 @@
 
 PRGNAM=k3b-i18n
 PKGNAM=$TDEPFX$PRGNAM
-[[ $PRE_DOWNLOAD != yes ]] && [[ $I18N == "" ]] && echo -e "\033[39;1m\nYou have tried to build $PRGNAM without selecting any language(s)\n\033[0m" && exit
+[[ $PRE_DOWNLOAD != yes ]] && [[ $I18N == "" ]] && \
+echo -e "\033[39;1m
+  You have tried to build $PRGNAM without selecting any language(s)
+\033[0m" && exit
 VERSION=$TDEVERSION
 BUILD=${BUILD:-1}
 TAG=${TAG:-_tde}
diff --git a/Apps/kile/README b/Apps/kile/README
index 973cb9c..2f02cfa 100755
--- a/Apps/kile/README
+++ b/Apps/kile/README
@@ -1,4 +1,4 @@
-Type `kile` and enjoy the power of LaTeX together with the joy of using Kile :)
+Re: kile source README:
 
 Using Kile
 
diff --git a/Apps/kile/kile.SlackBuild b/Apps/kile/kile.SlackBuild
index 0e3603d..f5fc7a9 100755
--- a/Apps/kile/kile.SlackBuild
+++ b/Apps/kile/kile.SlackBuild
@@ -37,39 +37,15 @@ untar_fn
 # but only for languages available with this package
 langs=""
 ldocs=""
-[[ $TDEVERSION == 14.0.11 ]] && {
-for Lang in $I18N;do [[ -d translations/$Lang ]] && langs="$langs $Lang" && \
-[[ -d translations/$Lang/doc ]] && ldocs="$ldocs $Lang";done
-sed -i "s|SUBDIRS=.*$|SUBDIRS=$langs|" translations/Makefile.am
-} || {
 for Lang in $I18N;do [[ -s translations/messages/$Lang.po ]] && langs="$langs $Lang";done
 for Lang in $I18N;do [[ -d doc/$Lang ]] && ldocs="$ldocs $Lang";done
-}
 
 listdocs_fn
 
-[[ $TDEVERSION == 14.0.11 ]] && ltoolupdate_fn
-
 chown_fn
 
 cd_builddir_fn
 
-[[ $TDEVERSION == 14.0.11 ]] && {
-
-[[ $GCC_VIS == ON ]] && EN_GCC_VIS="--enable-gcc-hidden-visibility"
-
-CFLAGS="$SLKRCFLAGS" \
-CXXFLAGS="$SLKRCFLAGS" \
-CC=$COMPILER \
-CXX=$COMPILER_CXX \
-../configure \
-   --prefix=$INSTALL_TDE \
-   ${EN_GCC_VIS:-} \
-   --disable-rpath \
-   --enable-closure
-
-} || {
-
 cmake ${G_NINJA:-} \
     -DCMAKE_C_FLAGS="$SLKRCFLAGS" \
     -DCMAKE_CXX_FLAGS="$SLKRCFLAGS" \
@@ -83,8 +59,6 @@ cmake ${G_NINJA:-} \
     -Wno-dev \
     ..
 
-}
-
 make_fn
 
 installdocs_fn
diff --git a/Apps/klamav/klamav.SlackBuild b/Apps/klamav/klamav.SlackBuild
index 7580c8d..da2eb60 100644
--- a/Apps/klamav/klamav.SlackBuild
+++ b/Apps/klamav/klamav.SlackBuild
@@ -91,7 +91,7 @@ cd $TMP_BUILD/package-clamav
 makepkg -l y -c n $OUTPUT/clamav-0.103.3-$ARCH-$BUILD.txz
 installpkg $OUTPUT/clamav-0.103.3-$ARCH-$BUILD.txz
 )
-echo -e "\n returning to building klamav \n"
+echo -e "\n now building klamav \n"
 clamav_installed_fn || { echo -e "\033[39;1m"" ## installation of clamav failed ##\n""\033[0m" ; exit 1 ; }
 } || { ## .. but if the source archive isn't in 'src', display message ..
 echo -e "\n ############ \n\n\033[39;1m clamav is not installed and is required for this build \n
diff --git a/Apps/knemo/knemo.SlackBuild b/Apps/knemo/knemo.SlackBuild
index b867f02..6cda251 100755
--- a/Apps/knemo/knemo.SlackBuild
+++ b/Apps/knemo/knemo.SlackBuild
@@ -62,6 +62,7 @@ cmake ${G_NINJA:-} \
     -DPLUGIN_INSTALL_DIR=$INSTALL_TDE/lib$LIBDIRSUFFIX/$PLUGIN_INSTALL_DIR \
     -DWITH_GCC_VISIBILITY=${GCC_VIS:-} \
     -DWITH_LIBIW="OFF" \
+    -DWITH_NETTOOLS="OFF" \
     -DBUILD_DOC="ON" \
     -DBUILD_TRANSLATIONS="ON" \
     -Wno-dev \
diff --git a/Apps/knights/knights.SlackBuild b/Apps/knights/knights.SlackBuild
index 18eac02..14226e3 100755
--- a/Apps/knights/knights.SlackBuild
+++ b/Apps/knights/knights.SlackBuild
@@ -47,6 +47,8 @@ chown_fn
 
 cd_builddir_fn
 
+## BUILD_EXTRA_THEME is a 14.1.0 option and will be ignored for 14.0.n builds
+## See the slack-desc for a URL for additional themes
 cmake ${G_NINJA:-} \
     -DCMAKE_C_FLAGS="$SLKRCFLAGS" \
     -DCMAKE_CXX_FLAGS="$SLKRCFLAGS" \
@@ -85,7 +87,7 @@ echo "
 $PRGNAM: A graphical chess interface for the Trinity Desktop Environment
 $PRGNAM:
 $PRGNAM: Download themepack [additional boards and chessman themes] from:
-$PRGNAM:         http://sourceforge.net/project/showfiles.php?group_id=31461
+$PRGNAM:         https://sourceforge.net/project/showfiles.php?group_id=31461
 $PRGNAM:
 $PRGNAM: Needs separate chess engines, for example gnuchess, stockfish, komodo.
 $PRGNAM:
diff --git a/Apps/koffice-i18n/koffice-i18n.SlackBuild b/Apps/koffice-i18n/koffice-i18n.SlackBuild
index c61849f..6288bcb 100755
--- a/Apps/koffice-i18n/koffice-i18n.SlackBuild
+++ b/Apps/koffice-i18n/koffice-i18n.SlackBuild
@@ -24,7 +24,10 @@
 #   SUCH DAMAGE.
 
 PRGNAM=koffice-i18n
-[[ $PRE_DOWNLOAD != yes ]] && [[ $I18N == "" ]] && echo -e "\033[39;1m\nYou have tried to build $PRGNAM without selecting any language(s)\n\033[0m" && exit
+[[ $PRE_DOWNLOAD != yes ]] && [[ $I18N == "" ]] && \
+echo -e "\033[39;1m
+  You have tried to build $PRGNAM without selecting any language(s)
+\033[0m" && exit
 VERSION=$TDEVERSION
 BUILD=${BUILD:-1}
 TAG=${TAG:-_tde}
@@ -44,7 +47,11 @@ cd $dir
 
 ## revert name 'chalk' to 'krita' if that has been done for koffice
 [[ $(ls $INSTALL_TDE/bin/krita) ]] && {
-echo -e "\n Reverting chalk to krita for $dir .. \n"
+echo -e "\033[39;1m
+
+  Reverting chalk to krita for $dir ..
+  $(printf '%0.s¯' $(seq 1 $[${#dir}+29]))
+\033[0m"
 ## Rename files and contents:
 mv ../template/messages/koffice/chalk.pot ../template/messages/koffice/krita.pot || true
 mv messages/koffice/chalk.po messages/koffice/krita.po
diff --git a/Apps/koffice/README b/Apps/koffice/README
index 7f90c5f..4802de9 100644
--- a/Apps/koffice/README
+++ b/Apps/koffice/README
@@ -6,8 +6,8 @@ If it is necessary to convert the image to the RGB working space, there are a nu
 
 Example:
 """""""
-in=<path-to>/original.png
-out=<path-to>/converted.png
+in=<path-to>/original.png    # existing
+out=<path-to>/converted.png  # will be created
 profile=<TDE-installation-directory>/share/apps/{chalk,krita}/profiles/srgb_color_space_profile.icm
 convert='gm convert'
 ($convert $in -profile $profile $out)
diff --git a/Apps/kompose/kompose.SlackBuild b/Apps/kompose/kompose.SlackBuild
index 02f447e..43d6734 100644
--- a/Apps/kompose/kompose.SlackBuild
+++ b/Apps/kompose/kompose.SlackBuild
@@ -43,7 +43,7 @@ chown_fn
 
 cd_builddir_fn
 
-[[ -s /usr/lib$LIBDIRSUFFIX/pkgconfig/xdamage.pc && -s /usr/lib$LIBDIRSUFFIX/pkgconfig/xcomposite.pc ]] && XCOMP="ON"
+pkg-config xdamage && pkg-config xcomposite && XCOMP="ON"
 cmake ${G_NINJA:-} \
     -DCMAKE_C_FLAGS="$SLKRCFLAGS" \
     -DCMAKE_CXX_FLAGS="$SLKRCFLAGS" \
diff --git a/Apps/kvkbd/README b/Apps/kvkbd/README
index a818419..58794ed 100644
--- a/Apps/kvkbd/README
+++ b/Apps/kvkbd/README
@@ -1,13 +1,13 @@
-The many enhancements include setting key and/or background colours, and displaying level 3 & 4 characters where the xkb/symbols definitions include using the AltGr [ralt] key.
+The many enhancements include setting key and/or background colours, and displaying level 3 & 4 characters where the xkb/symbols definitions include using the AltGr key [include "level3(ralt_switch)"].
 
 Build-time options to be hard-coded into the app are:
 
-[1] Use Win keys
-    a] as modifier keys
+[1] Use each Win key
+    a] as a modifier key
        The default use for the \Zb\Z6LWin\Zn and \Zb\Z6RWin\Zn keys on the \Zb\Z6Kvkbd\Zn keyboard is set as modifier keys to map a number of characters or functions and to 'lock' for the next key click - this is to simulate holding down the key on a physical keyboard.
 
- or b] for characters set with xmodmap.
-       Alternatively, using xmodmap they can map to characters set by a user - this will generate a keycode on a single click.
+ or b] for a character set with xmodmap
+       Alternatively, using xmodmap, each key can map to a character set by a user - this will generate a keycode on a single click.
 
 [2] Alternative text on the num pad keys.
 
@@ -15,10 +15,10 @@ For example:
 |Ho|
 |me| can be replaced with |H←|, which is a better fit on the keys.
 
-[3] Small icons can be shown on the buttons if the keyboard is to be used at the default size.
+[3] Small icons are a better fit on the buttons if the keyboard is to be used at the default size.
 
 [4] Show blank keys where AltGr doesn't produce a character.
 
-3rd and 4th level character sets on a keyboard generally don't cover all keys.
-Select this option to see only those characters which AltGr generates.
+Usually, not all keys have 3rd and 4th level characters assigned.
+Select this option to see only those characters which AltGr or AltGr+Shift generate.
  
diff --git a/Apps/rosegarden/rosegarden.SlackBuild b/Apps/rosegarden/rosegarden.SlackBuild
index a73226e..fd1469b 100755
--- a/Apps/rosegarden/rosegarden.SlackBuild
+++ b/Apps/rosegarden/rosegarden.SlackBuild
@@ -34,7 +34,7 @@ getsource_fn
 untar_fn
 
 ## remove help documentation build instruction from all locales ...
-sed -i '/tde_create_handbook/,+3d' doc/??{,_??}/CMakeLists.txt || true
+sed -i '/tde_create_handbook/,+3d' doc/*/CMakeLists.txt || true
 ## ... and restore for 'en'
 echo "tde_create_handbook( LANG en DESTINATION $PRGNAM )" >> doc/en/CMakeLists.txt
 #
@@ -65,10 +65,10 @@ chown_fn
 cd_builddir_fn
 
 # Check for Jack Audio Connection Kit
-[[ $(ls /var/log/packages/jack-audio-connection-kit-*) ]] && JACK="ON"
+pkg-config jack && JACK="ON"
 
 # Check for DSSI aka "Dizzy"
-[[ $(grep -E "dssi.h" /var/log/packages/*) ]] && DSSI="ON"
+pkg-config dssi && DSSI="ON"
 
 cmake ${G_NINJA:-} \
     -DCMAKE_C_FLAGS="$SLKRCFLAGS" \
diff --git a/BUILD-TDE.sh b/BUILD-TDE.sh
index a566d6d..5a08844 100755
--- a/BUILD-TDE.sh
+++ b/BUILD-TDE.sh
@@ -101,7 +101,7 @@ Set the version of TDE to be built.
  
 " \
 13 75 3 \
-"14.0.11" "the R14.0.11 release - source from archives" \
+"14.0.12" "the R14.0.12 release - source from archives" \
 "14.0.x" "next release preview - source from Trinity git" \
 "14.1.0" "R14.1.0 development - source from Trinity git" \
 2> $TMPVARS/TDEVERSION
@@ -352,7 +352,7 @@ about_4="Full-screen window/desktop manager"
 status_4=off
 comment_4="\Zb\Z6 Imlib2 is a build time requirement \Zn"
 
-## there is no 14.0.x/11 port for this
+## there is no 14.0.x/12 port for this
 [[ $(cat $TMPVARS/TDEVERSION) == 14.1.0 ]] && {
 app_5="Apps/kplayer"
 about_5="Multimedia player with MPlayer backend"
@@ -724,7 +724,7 @@ See the README for further details ..
 
 [1] Use Win keys
     either as modifier keys,
-        or to print characters set with xmodmap.
+        or to print a character set with xmodmap.
 
 [2] Alternative text on the num pad keys.
 
@@ -801,8 +801,8 @@ Create and/or update the git repositories local copies.
 
 
 #rm -f $TMPVARS/PRE_DOWNLOAD  ## this is done at the head of this script
-[[ $(cat $TMPVARS/TDEVERSION) == 14.0.11 ]] && PRE_DOWNLOAD_MESSAGE="Only the source archives not already in 'src' will be downloaded." || PRE_DOWNLOAD_MESSAGE="All cgit sources for the build list packages will be cloned/updated.\nMisc archives will only be downloaded if not already in 'src'."
-## testing for cgit!=no will allow =yes, or null, which is the 14.0.11 build case
+[[ $(cat $TMPVARS/TDEVERSION) == 14.0.12 ]] && PRE_DOWNLOAD_MESSAGE="Only the source archives not already in 'src' will be downloaded." || PRE_DOWNLOAD_MESSAGE="All cgit sources for the build list packages will be cloned/updated.\nMisc archives will only be downloaded if not already in 'src'."
+## testing for cgit!=no will allow =yes, or null, which is the 14.0.12 build case
 [[ $(cat $TMPVARS/DL_CGIT) != no ]] &&  {
 dialog --cr-wrap --no-shadow --colors --defaultno --title " Only download sources " --yesno \
 "
@@ -865,13 +865,16 @@ Confirm or change these build options ..
 
 [2] \Z3\Zbno_warn\Zn - don't display any compiler warning messages
 
-[3] \Z3\Zbninja\Zn - use ninja for cmake builds [ignored for automake builds]
+[3] \Z3\Zbninja\Zn - use ninja for cmake builds [ignored for autotools builds]
 
-[4] \Z3\Zbverbose\Zn - show -> command lines during cmake builds; 'make' debugging information; and standard error output.
-Using this is only recommended if fault finding.
+[4] \Z3\Zbverbose\Zn - show:
+              * command lines during cmake builds
+              * 'make' debugging information
+              * standard error output
+    Using this is only recommended if fault finding.
  
 " \
-25 75 4 \
+27 75 4 \
 " install" "install built packages" ${OPT_1:-on} \
 " no_warn" "suppress compiler warnings" ${OPT_2:-off} \
 " ninja" "use ninja for cmake builds" ${OPT_3:-off} \
diff --git a/Core/tde-i18n/tde-i18n.SlackBuild b/Core/tde-i18n/tde-i18n.SlackBuild
index d5614e6..1539e7e 100755
--- a/Core/tde-i18n/tde-i18n.SlackBuild
+++ b/Core/tde-i18n/tde-i18n.SlackBuild
@@ -24,7 +24,10 @@
 #   SUCH DAMAGE.
 
 PRGNAM=tde-i18n
-[[ $PRE_DOWNLOAD != yes ]] && [[ $I18N == "" ]] && echo -e "\033[39;1m\nYou have tried to build $PRGNAM without selecting any language(s)\n\033[0m" && exit
+[[ $PRE_DOWNLOAD != yes ]] && [[ $I18N == "" ]] && \
+echo -e "\033[39;1m
+  You have tried to build $PRGNAM without selecting any language(s)
+\033[0m" && exit
 VERSION=$TDEVERSION
 BUILD=${BUILD:-1}
 
@@ -35,23 +38,23 @@ getsource_fn
 ## extract, build, and remove source for each language package one at a time
 
 cd $TMP_BUILD/tmp-$PRGNAM
-[[ $TDEVERSION == 14.0.11 ]] && {
+[[ $TDEVERSION == 14.0.12 ]] && {
 # extract the template source once only
-echo -e "\033[39;1m"
-echo "Extracting the template source from $(basename $SOURCE) ..."
-echo -e "\033[0m"
+echo -e "\033[39;1m
+  Extracting the template source from $(basename $SOURCE) ...
+\033[0m"
 tar xf $SOURCE $PRGNAM-trinity-$TDEVERSION/template
 # extract the translations source once only
-echo -e "\033[39;1m"
-echo "Extracting the translations source from $(basename $SOURCE) ..."
-echo -e "\033[0m"
+echo -e "\033[39;1m
+  Extracting the translations source from $(basename $SOURCE) ...
+\033[0m"
 tar xf $SOURCE $PRGNAM-trinity-$TDEVERSION/translations
 # extract the cmake source once only
-## it's unlikely that this is being run without the required packages,
+## it's unlikely that this is being run without the 'Required' packages,
 ## in which case the cmake archive will exist
-echo -e "\033[39;1m"
-echo "Extracting the cmake source from $(basename $SRCDIR/cmake-$TDEVERSION.tar.xz) ..."
-echo -e "\033[0m"
+echo -e "\033[39;1m
+  Extracting the cmake source from $(basename $SRCDIR/cmake-$TDEVERSION.tar.xz) ...
+\033[0m"
 (cd $PRGNAM-trinity-$TDEVERSION
 tar xf $SRCDIR/cmake-$TDEVERSION.tar.xz
 mv cmake-trinity-$TDEVERSION cmake)
@@ -64,11 +67,11 @@ cp -a --parents cmake/* $TMP_BUILD/tmp-$PRGNAM/$PRGNAM/)
 
 for lang in $I18N
 do
-[[ $TDEVERSION == 14.0.11 ]] && {
+[[ $TDEVERSION == 14.0.12 ]] && {
 # extract the source for one language at a time for each iteration of the loop
-echo -e "\033[39;1m"
-echo "Extracting the $PRGNAM-$lang source from $(basename $SOURCE) ..."
-echo -e "\033[0m"
+echo -e "\033[39;1m
+  Extracting the $PRGNAM-$lang source from $(basename $SOURCE) ...
+\033[0m"
 tar -xf $SOURCE $PRGNAM-trinity-$TDEVERSION/$PRGNAM-$lang
 cd $PRGNAM-trinity-$TDEVERSION
 ## link cmake into the $PRGNAM-$lang top level
@@ -78,7 +81,9 @@ ln -s ../cmake .)
 true # don't go to cgit if extracting fails
 } || {
 cd $PRGNAM
-echo -e "\n copying $PRGNAM-$lang source files to build area ... \n"
+echo "
+ copying $PRGNAM-$lang source files to build area ...
+"
 (cd $BUILD_TDE_ROOT/src/cgit
 cp -a tdei18n/cgit/tde-i18n/plain/tde-i18n-$lang $TMP_BUILD/tmp-$PRGNAM/$PRGNAM/)
 (cd $TMP_BUILD/tmp-$PRGNAM/$PRGNAM/$PRGNAM-$lang/
@@ -158,7 +163,9 @@ PKG=$PKG1
 
 cd $TMP_BUILD/tmp-$PRGNAM
 # remove any previous builds if option chosen
-[[ $KEEP_BUILD != "yes" ]] && echo -e " removing tde-i18n-$lang build data ..\n" && {
+[[ $KEEP_BUILD != "yes" ]] && echo "
+ removing tde-i18n-$lang build data ..
+" && {
 rm -rf $PKG/*
 rm -rf $PRGNAM*/$PRGNAM-$lang
 }
diff --git a/Core/tdeartwork/tdeartwork.SlackBuild b/Core/tdeartwork/tdeartwork.SlackBuild
index 194a635..14b948b 100755
--- a/Core/tdeartwork/tdeartwork.SlackBuild
+++ b/Core/tdeartwork/tdeartwork.SlackBuild
@@ -89,7 +89,7 @@ $PRGNAM: tdeartwork
 $PRGNAM:
 $PRGNAM: Extra artwork/themes/wallpapers for TDE
 $PRGNAM: * themes,
-$PRGNAM: * screensaver,
+$PRGNAM: * screensavers,
 $PRGNAM: * sounds,
 $PRGNAM: * wallpapers,
 $PRGNAM: * widget styles and
diff --git a/Core/tdeedu/tdeedu.SlackBuild b/Core/tdeedu/tdeedu.SlackBuild
index cba7682..bfdb3c5 100755
--- a/Core/tdeedu/tdeedu.SlackBuild
+++ b/Core/tdeedu/tdeedu.SlackBuild
@@ -48,6 +48,124 @@ rm -rf *ocaml*
 tar xf $BUILD_TDE_ROOT/src/4.05.0.tar.gz
 cd ocaml-4.05.0/
 
+## patch for error caused by glibc-2.34:
+## signals_asm.c:197:13: error: variably modified ‘sig_alt_stack’ at file scope
+##  197 | static char sig_alt_stack[SIGSTKSZ];
+##      |             ^~~~~~~~~~~~~
+## Refs: https://github.com/ocaml/ocaml/{issues/10250,pull/10266}
+##       https://github.com/dra27/ocaml/[pull/56]
+##         └ 0d2c1fd77b4715c70d0ffc4348f1bc2d3eaacbf7 refs/remotes/origin/alt-signal-stack-4.05
+##           └ commit 50c2d1275e537906ea144bd557fde31e0bf16e5f
+patch -p0 << EOF
+--- asmrun/fail.c
++++ asmrun/fail.c
+@@ -33,0 +34,2 @@
++extern void caml_terminate_signals(void);
++
+@@ -63 +65,4 @@
+-  if (caml_exception_pointer == NULL) caml_fatal_uncaught_exception(v);
++  if (caml_exception_pointer == NULL) {
++    caml_terminate_signals();
++    caml_fatal_uncaught_exception(v);
++  }
+--- asmrun/signals_asm.c
++++ asmrun/signals_asm.c
+@@ -197 +196,0 @@
+-static char sig_alt_stack[SIGSTKSZ];
+@@ -298,8 +297,18 @@
+-    stk.ss_sp = sig_alt_stack;
+-    stk.ss_size = SIGSTKSZ;
+-    stk.ss_flags = 0;
+-    SET_SIGACT(act, segv_handler);
+-    act.sa_flags |= SA_ONSTACK | SA_NODEFER;
+-    sigemptyset(&act.sa_mask);
+-    system_stack_top = (char *) &act;
+-    if (sigaltstack(&stk, NULL) == 0) { sigaction(SIGSEGV, &act, NULL); }
++    /* Allocate and select an alternate stack for handling signals,
++       especially SIGSEGV signals.
++       The alternate stack used to be statically-allocated for the main thread,
++       but this is incompatible with Glibc 2.34 and newer, where SIGSTKSZ
++       may not be a compile-time constant. */
++    stk.ss_sp = malloc(SIGSTKSZ);
++    if (stk.ss_sp != NULL) {
++      stk.ss_size = SIGSTKSZ;
++      stk.ss_flags = 0;
++      SET_SIGACT(act, segv_handler);
++      act.sa_flags |= SA_ONSTACK | SA_NODEFER;
++      sigemptyset(&act.sa_mask);
++      system_stack_top = (char *) &act;
++      if (sigaltstack(&stk, NULL) == 0)
++        sigaction(SIGSEGV, &act, NULL);
++      else
++        free(stk.ss_sp);
++    }
+@@ -309,0 +319,42 @@
++#endif
++}
++
++/* Termination of signal stuff */
++
++#if defined(TARGET_power) || defined(TARGET_s390x) \\
++    || defined(TARGET_sparc) && defined(SYS_solaris) \\
++    || defined(HAS_STACK_OVERFLOW_DETECTION)
++static void set_signal_default(int signum)
++{
++  struct sigaction act;
++  sigemptyset(&act.sa_mask);
++  act.sa_handler = SIG_DFL;
++  act.sa_flags = 0;
++  sigaction(signum, &act, NULL);
++}
++#endif
++
++void caml_terminate_signals(void)
++{
++#if defined(TARGET_sparc) && defined(SYS_solaris)
++  set_signal_default(SIGILL);
++#endif
++
++#if defined(TARGET_power)
++  set_signal_default(SIGTRAP);
++#endif
++
++#if defined(TARGET_s390x)
++  set_signal_default(SIGFPE);
++#endif
++
++#ifdef HAS_STACK_OVERFLOW_DETECTION
++  set_signal_default(SIGSEGV);
++  stack_t oldstk, stk;
++  stk.ss_flags = SS_DISABLE;
++  if (sigaltstack(&stk, &oldstk) == 0) {
++    /* If caml_init_signals failed, we are not using an alternate signal stack.
++       SS_DISABLE will be set in oldstk, and there is nothing to free in this
++       case. */
++    if (! (oldstk.ss_flags & SS_DISABLE)) free(oldstk.ss_sp);
++  }
+--- asmrun/startup.c
++++ asmrun/startup.c
+@@ -94,0 +95 @@
++extern void caml_terminate_signals(void);
+@@ -105,0 +107 @@
++  value res;
+@@ -140,0 +143 @@
++    caml_terminate_signals();
+@@ -144 +147,3 @@
+-  return caml_start_program();
++  res = caml_start_program();
++  caml_terminate_signals();
++  return res;
+--- byterun/sys.c
++++ byterun/sys.c
+@@ -113,0 +114,2 @@
++extern void caml_terminate_signals(void);
++
+@@ -146,0 +149,3 @@
++#ifdef NATIVE_CODE
++  caml_terminate_signals();
++#endif
+EOF
+
 ## force "gcc -fcommon" for gcc10 build - see https://github.com/ocaml/ocaml/issues/9622
 ./configure -cc "gcc -fcommon" -libdir /usr/local/lib$LIBDIRSUFFIX/ocaml
 ## finish build with -j1 if there are race condition errors
@@ -75,7 +193,7 @@ cd $TMP_BUILD/package-facile
 makepkg -l y -c n $OUTPUT/facile-1.1.3-$ARCH-$BUILD.txz
 installpkg $OUTPUT/facile-1.1.3-$ARCH-$BUILD.txz
 )
-echo -e "\n returning to building tdeedu \n"
+echo -e "\n now building tdeedu \n"
 ocaml_installed_fn || { echo -e " installation of ocaml/facile failed \n" ; exit 1 ; }
 }
 } && \
diff --git a/Core/tdegraphics/tdegraphics.SlackBuild b/Core/tdegraphics/tdegraphics.SlackBuild
index d43050e..be690ac 100755
--- a/Core/tdegraphics/tdegraphics.SlackBuild
+++ b/Core/tdegraphics/tdegraphics.SlackBuild
@@ -48,43 +48,6 @@ echo $'
 +</includes>
 ' | patch -N -p0 || true
 
-## Patch for poppler 21.11, tdegraphics issue #36/37
-[[ $TDEVERSION == 14.0.11 ]] && {
-echo $'
---- config.h.cmake
-+++ config.h.cmake
-@@ -3,2 +3,3 @@
- // poppler-tqt
-+#cmakedefine HAVE_POPPLER_2111
- #cmakedefine HAVE_POPPLER_2108
-
---- tdefile-plugins/dependencies/poppler-tqt/ConfigureChecks.cmake
-+++ tdefile-plugins/dependencies/poppler-tqt/ConfigureChecks.cmake
-@@ -26,3 +26,3 @@
- 
--foreach( _poppler_ver 0.58 0.64 0.70 0.71 0.72 0.76 0.82 0.83 0.86 21.08 )
-+foreach( _poppler_ver 0.58 0.64 0.70 0.71 0.72 0.76 0.82 0.83 0.86 21.08 21.11 )
-   string( REPLACE "." "" _poppler_str "${_poppler_ver}" )
-
---- tdefile-plugins/dependencies/poppler-tqt/poppler-page.cpp
-+++ tdefile-plugins/dependencies/poppler-tqt/poppler-page.cpp
-@@ -175,3 +175,7 @@
- 
-+# if defined(HAVE_POPPLER_2111)
-+  std::unique_ptr<TextWordList> word_list = output_dev->makeWordList();
-+# else
-   TextWordList *word_list = output_dev->makeWordList();
-+# endif
- 
-@@ -195,3 +199,5 @@
- 
-+# if !defined(HAVE_POPPLER_2111)
-   delete word_list;
-+# endif
-   delete output_dev;
-' | patch -p0
-}
-
 listdocs_fn
 
 chown_fn
diff --git a/Core/tdelibs/tdelibs.SlackBuild b/Core/tdelibs/tdelibs.SlackBuild
index d27e5f9..c1371e0 100755
--- a/Core/tdelibs/tdelibs.SlackBuild
+++ b/Core/tdelibs/tdelibs.SlackBuild
@@ -115,6 +115,29 @@ patch -N -p0 << EOF || true
 +  text-align: left;
 EOF
 
+## for jasper-3.0.0+
+patch -N -p0 << EOF || true
+--- kimgio/jp2.cpp
++++ kimgio/jp2.cpp
+@@ -279,7 +279,16 @@ kimgio_jp2_write( TQImageIO* io )
+ 	TQTextStream ts( &rate, IO_WriteOnly );
+ 	ts << "rate="
+ 		<< ( (io->quality() < 0) ? DEFAULT_RATE : io->quality() / 100.0F );
++#	if defined(JAS_VERSION_MAJOR) && (JAS_VERSION_MAJOR >= 3)
++	const jas_image_fmtinfo_t *jp2_fmtinfo = jas_image_lookupfmtbyname("jp2");
++	int i = -1;
++	if (jp2_fmtinfo)
++	{
++		i = jas_image_encode(ji, stream, jp2_fmtinfo->id, rate.utf8().data());
++	}
++#	else
+ 	int i = jp2_encode( ji, stream, rate.utf8().data() );
++#	endif
+ 
+ 	jas_image_destroy( ji );
+ 	jas_stream_close( stream );
+EOF
+
 listdocs_fn
 
 chown_fn
@@ -122,10 +145,9 @@ chown_fn
 cd_builddir_fn
 
 # Check for avahi-tqt
-[[ -s $INSTALL_TDE/include/avahi-tqt/qt-watch.h ]] && AVAHI="ON" && {
-## dnssd/responder.cpp:28:10: fatal error: avahi-tqt/qt-watch.h: No such file or directory
-sed -i 's|TQT_INCLUDE_DIRS}|&\n  ${AVAHI_TQT_INCLUDE_DIRS}|' ../dnssd/CMakeLists.txt
-}
+pkg-config avahi-tqt && AVAHI="ON"
+# Check for jasper
+pkg-config jasper && JASPER="ON"
 
 ## Slackware doesn't include Hspell
 ## Prioritise Aspell according to its slack-desc:
@@ -135,6 +157,14 @@ sed -i 's|TQT_INCLUDE_DIRS}|&\n  ${AVAHI_TQT_INCLUDE_DIRS}|' ../dnssd/CMakeLists
 ## just show message without failing if no spell checker is installed
 sed -i 's|tde_message_fatal( "Spell checker|message( "Spell checker|' ../CMakeLists.txt
 
+<<'comment'
+    WITH_CRYPTSETUP
+    WITH_PCSC
+    WITH_PKCS
+    WITH_UDEVIL
+are 14.1.0 options and will be ignored by 14.0.n builds
+comment
+
 cmake ${G_NINJA:-} \
     -DCMAKE_C_FLAGS="$SLKRCFLAGS" \
     -DCMAKE_CXX_FLAGS="$SLKRCFLAGS" \
@@ -154,6 +184,7 @@ cmake ${G_NINJA:-} \
     -DWITH_ASPELL=${ASPELL:-"OFF"} \
     -DWITH_AVAHI=${AVAHI:-"OFF"} \
     -DWITH_CONSOLEKIT="OFF" \
+    -DWITH_CRYPTSETUP="ON" \
     -DWITH_CUPS="ON" \
     -DWITH_DEVKITPOWER="ON" \
     -DWITH_ELFICON="OFF" \
@@ -164,7 +195,7 @@ cmake ${G_NINJA:-} \
     -DWITH_IMAGETOPS_BINARY="OFF" \
     -DWITH_INOTIFY="ON" \
     -DWITH_ISPELL=${ISPELL:-"OFF"} \
-    -DWITH_JASPER="OFF" \
+    -DWITH_JASPER=${JASPER:-"OFF"} \
     -DWITH_KDE4_MENU_SUFFIX="ON" \
     -DWITH_LIBART="ON" \
     -DWITH_LIBBFD="OFF" \
@@ -177,12 +208,15 @@ cmake ${G_NINJA:-} \
     -DWITH_OLD_XDG_STD="OFF" \
     -DWITH_OPENEXR="ON" \
     -DWITH_PCRE="ON" \
+    -DWITH_PCSC="OFF" \
+    -DWITH_PKCS="OFF" \
     -DWITH_SSL="ON" \
     -DWITH_SUDO_TDESU_BACKEND="ON" \
     -DWITH_TDEHWLIB="ON" \
     -DWITH_TDEHWLIB_DAEMONS="ON" \
     -DWITH_TDEICONLOADER_DEBUG="OFF" \
     -DWITH_TIFF="ON" \
+    -DWITH_UDEVIL="ON" \
     -DWITH_UDISKS2="ON" \
     -DWITH_UDISKS="ON" \
     -DWITH_UPOWER="OFF" \
diff --git a/Deps/akode/README b/Deps/akode/README
index 295d57e..d183483 100644
--- a/Deps/akode/README
+++ b/Deps/akode/README
@@ -11,12 +11,4 @@ Take especially note of the following:
 
   When using direct aKode playback sinks will be autodetected by loading and probing plugins in this order: pulse, jack, alsa, oss
 """
-
----------------------
-Attempting to build FFMPEG_DECODER was abandoned because the akode code is too old.
-
-Example:
-/tmp/build/tmp-akode/akode-trinity-14.0.7/akode/plugins/ffmpeg_decoder/ffmpeg_decoder.cpp:98:17: error: ‘AVCODEC_MAX_AUDIO_FRAME_SIZE’ was not declared in this scope
-
- ... is no longer defined in ffmpeg.
  
diff --git a/README.md b/README.md
index 599ba8c..d218d4d 100644
--- a/README.md
+++ b/README.md
@@ -7,7 +7,7 @@
 See 'Cross compiling for RPi3' for building for arm_hf and aarch64.
 
 For a native build, run **./BUILD-TDE.sh** - a dialog based script with a series of screens for user input,  
-which will build the release version 14.0.11, or the development versions 14.0.x, 14.1.0.
+which will build the release version 14.0.12, or the development versions 14.0.x, 14.1.0.
 
 [<img src="https://ray-v.github.io/TDE-version.png">](https://ray-v.github.io/TDE-version.png)
 
@@ -18,7 +18,7 @@ Information about dependencies for some packages has been added at the bottom of
 
 Only building the packages is a global option. It therefore can't be used where the build list includes packages which will need to be installed as dependencies for other packages in the build list [for example tdesdk needs tdepim to be installed].
 
-14.0.11 source archives will be downloaded from a geoIP located mirror site, or the development sources [14.0.x/14.1.0] cloned or updated from trinitydesktop gitea.  
+14.0.12 source archives will be downloaded from a geoIP located mirror site, or the development sources [14.0.x/14.1.0] cloned or updated from trinitydesktop gitea.  
 Downloading can be done pre-build [useful for an off-line build], or during the build.
 
 If you're curious about what this might involve, [take a look at a sample build set up](https://ray-v.github.io/A_typical_TDE_SlackBuild.html).
@@ -26,7 +26,8 @@ If you're curious about what this might involve, [take a look at a sample build
 ---
 
 ***Command line options*** that can be used to set some build parameters:
-* TDE_MIRROR= - override the trinitydesktop.org geoIP redirector to use https - example, *https://trinitydesktop.mirrorservice.org/trinity*.  
+* TDE_MIRROR= - override the trinitydesktop.org geoIP redirector to use https.  
+   For example, *TDE_MIRROR=https://trinitydesktop.mirrorservice.org ./BUILD-TDE.sh*  
 URLs for this and other locations are @ https://www.trinitydesktop.org/mirrorstatus.php
 * BUILD= - sets the package build identifier, overriding the SlackBuild default of 1
 * GCC_VIS=0 - override setting gcc visibility if it has been set ON in tdelibs
diff --git a/apps-list b/apps-list
index 74c15c4..6e697d0 100644
--- a/apps-list
+++ b/apps-list
@@ -18,7 +18,6 @@ multimedia-Apps/k3b
 multimedia-Apps/k3b-i18n
 multimedia-Apps/k9copy
 multimedia-Apps/kaffeine
-multimedia-Apps/kplayer
 multimedia-Apps/rosegarden
 multimedia-Apps/soundkonverter
 office-Apps/kbookreader
diff --git a/get-source.sh b/get-source.sh
index db2066d..378260f 100755
--- a/get-source.sh
+++ b/get-source.sh
@@ -71,14 +71,14 @@ SRCDIR=$BUILD_TDE_ROOT/src
 SB_SRCDIR=$(cd $(dirname $0); pwd)
 
 ## for 14.0.11 onwards, check for cmake archive ..
-[[ $TDEVERSION == 14.0.11 && ! -s $SRCDIR/cmake-$TDEVERSION.tar.xz ]] && (
+[[ $TDEVERSION == 14.0.12 && ! -s $SRCDIR/cmake-$TDEVERSION.tar.xz ]] && (
     echo -e "\nDownloading to $SRCDIR"
     wget -T 20 -O $SRCDIR/cmake-$TDEVERSION.tar.xz $TDE_MIRROR/releases/R$TDEVERSION/main/common/cmake-trinity-$TDEVERSION.tar.xz
     echo -e "----\n"
 )
 
-## if 14.0.11 or misc, download archive:
-[[ $TDEVERSION == 14.0.11 || $TDEMIR_SUBDIR == misc ]] && {
+## if 14.0.12 or misc, download archive:
+[[ $TDEVERSION == 14.0.12 || $TDEMIR_SUBDIR == misc ]] && {
 ## check for and remove any zero byte archive files
 [[ ! -s $SRCDIR/$PRGNAM-$VERSION.${ARCHIVE_TYPE:-"tar.xz"} ]] && \
 rm $SRCDIR/$PRGNAM-$VERSION.${ARCHIVE_TYPE:-"tar.xz"} 2>/dev/null || true
@@ -114,7 +114,7 @@ if [ "$P1" == "--download" ]; then
   exit 0
 fi
 } || {
-## otherwise, not R14.0.11 or misc, and we are creating/updating git,
+## otherwise, not R14.0.12 or misc, and we are creating/updating git,
 ## so [1] start with admin/cmake:
 [[ $(cat $TMPVARS/DL_CGIT) == yes ]] && {
 cd $BUILD_TDE_ROOT/src/cgit
@@ -171,7 +171,7 @@ git fetch origin r14.0.x:r14.0.x)
 git clone https://mirror.git.trinitydesktop.org/gitea/TDE/libltdl
 }
 
-## if tdenetwork, need libtdevnc, but not yet for 14.0.x==14.0.11[?] which uses krfb/libvncserver
+## if tdenetwork, need libtdevnc, but not yet for 14.0.x or 14.0.12 which use krfb/libvncserver
 [[ " tdenetwork " == *$PRGNAM* ]] && {
 [[ -d libtdevnc ]] && \
 (echo "Updating libtdevnc ..."
@@ -246,7 +246,7 @@ cd $TMP_BUILD/tmp-$PRGNAM
 ##
 ## [1] firstly test for R14 or misc ..
 ##
-[[ $TDEVERSION == 14.0.11 || $TDEMIR_SUBDIR == misc ]] && {
+[[ $TDEVERSION == 14.0.12 || $TDEMIR_SUBDIR == misc ]] && {
 ## unpack R14 or misc
 echo -e "\n unpacking $(basename $SOURCE) ... \n"
 tar -xf $SOURCE
@@ -260,7 +260,7 @@ mv cmake-trinity-$TDEVERSION cmake
 
 } || {
 
-## [2] not 14.0.11 nor misc, so must be git ..
+## [2] not 14.0.12 nor misc, so must be git ..
 [[ $TDEVERSION == 14.1.0 ]] && DEV_BRANCH=master || DEV_BRANCH=r14.0.x
 
 ## copy git content to build area:
diff --git a/src/README b/src/README
index 09e59ca..e07ac43 100644
--- a/src/README
+++ b/src/README
@@ -1 +1 @@
-If you place the source archives for TDE R14.0.x here, the scripts will use them instead of downloading them individually.
+If you place the source archives for the current release of TDE here, the scripts will use them instead of downloading them individually.
diff --git a/src/cgit/README b/src/cgit/README
index 9721c54..b1d3afa 100644
--- a/src/cgit/README
+++ b/src/cgit/README
@@ -1 +1 @@
-This directory is used to store the cloned tde-git repositories which are copied to the build area in place of the extracted R14.0.x archives.
+This directory is used to store the cloned tde-git repositories which are copied to the build area for development builds instead of the extracted TDE current release archives.
diff --git a/src/cgit/tdei18n/README b/src/cgit/tdei18n/README
index f18e3c9..228edec 100644
--- a/src/cgit/tdei18n/README
+++ b/src/cgit/tdei18n/README
@@ -1,2 +1,2 @@
 This directory is used for downloads of tde-i18n-ab_CD packs as they are not git repositories and therefore can't be cloned individually.
-They are copied to the build area in place of the extracted R14.0.x archives.
+They are copied to the build area for development builds instead of the extracted TDE current release archives.