Cross compile Trinity Desktop Environment [TDE] for the Raspberry Pi3

... a TDE desktop, cross compiled for aarch64, running on a RPi3.

This is based on the tde-slackbuilds build scripts which can be used for a native RPi3 build.
Builds have been done for the RPi3 running systems based on Slackware-arm-current [hard float], and Slarm64 [which can be downloaded from a mirror site, for example slackware.uk], with both systems using a 64-bit kernel built here.
The packages listed on this page have been built on an x86_64 machine and installed and tested OK on an RPi3.
[Edit: builds for R14.1.1 have been verified for 64-bit arm only].
For any problems, questions, etc please open an issue at tde-slackbuilds.

Why cross-compile?

Of the methods available for compiling TDE for the RPi3, I've tried three:
1] natively on the Pi itself
2] in an arm chroot on a x86_64 machine
3] cross compiling on a x86_64 machine using qemu/binfmt to run most of the TDE binaries required for the build

All methods work, but usually speed of compilation is the determining factor for which to choose.

Compared to a native x86_64 build, the build times are typically:
1] x3+
2] x10 - all binaries used here have to run through qemu
3] +25% typically - using a mix of x86_64 and arm binaries, the use of qemu can be minimized.
     For example, tqmoc is used extensively and as it builds arch independent output, the x86_64 version can be used.

The build order is:
1] the cross compiler
2] a 64-bit kernel
3] qemu
4] set up the build environment with tqmoc and meinproc x86 binaries
5] the required TDE packages and install them to / and sysroot
6] other packages
Options include packaging, 64-bit kernel and its components, imlib, …

To aid trouble shooting, this page has been set up so that each build can be run by selecting the contents in part or whole and pasting into a console.

TDE build environment
This will be the build setup for the cross-compiler and sysroot.
The intention is that as much as possible that is required for the TDE cross compilation is contained within one directory and can be installed/mounted only when required.
♦♦ sysroot libs and headers can be permanently installed within the cross-compiler tree or bind mounted from another media or directory.
♦ only TDE packages required for building other TDE apps will be installed.

/opt
├── cross-pi-gcc
│   ├── $TARGET
│   │   ├── bin
│   │   │   └── ldd …
│   │   └── lib
│   │       └── ld-linux-*.so.* …
│   ├── bin				cross compiler
│   │   └── $TARGET-gcc …
│   └── sysroot
│       ├── lib$LIBDIRSUFFIX ♦♦		target libraries
│       ├── usr ♦♦
│       │   ├── include			target headers
│       │   │   └── linux		kernel headers
│       │   └── lib$LIBDIRSUFFIX	target libraries
│       ├── src				source archives
│       ├── x86				x86 binaries - qemu-$ARM, meinproc, tqmoc
│       └── opt
│           └── tde ♦			for TDE headers and libraries for pkg-config
└── tde ♦				for TDE executables used during TDE builds

Source archives
The source archives need to be downloaded and placed in the src directory -
For the official release, R series, download from https://mirror.ppa.trinitydesktop.org/trinity/releases/

Build in a chroot?
Yes if:
▸ the TDE installation directory exists on the build system,
▸ any of the packages being built exist on the build system, because they will be overwritten with arm versions.

Set HOST for a 32-bit [armv7] or 64-bit [aarch64] build for the host system - RPi3 - for the TDE builds which use the autotools differentiation between build, host and target.
## 32-bit - only tested for a hard float build export HOST="arm-linux-gnueabihf" ## OR: ## 64-bit export HOST="aarch64-linux-gnu"

export ARM=$(echo $HOST|cut -d- -f1)

## Set installation directories
## for cross compiler export XGCC_DIR=/opt/cross-pi-gcc ## for sysroot export SYSROOT=$XGCC_DIR/sysroot

… build gcc cross-compiler  Based on - Building GCC as a cross compiler for Raspberry Pi - and the mentioned article - How to Build a GCC Cross-Compiler.

… build 64-bit kernel   and modules, and device tree blobs - based on Exaga's article.

… build qemu  Required to run arm binaries used during the build - for example tquic and tde-config.

… the build environment  Set the shell variables and install the required arm headers and libraries in SYSROOT.

… tqmoc and meinproc x86 binaries  The cross compiling build time can be reduced by using x86 versions of tqmoc and meinproc which produce ARCH independent ouput. The figures for the tdebase build demonstrate how much quicker a build can be.

… tqtinterface  

… arts  

… dbus-tqt  

… dbus-1-tqt  

… libart-lgpl  

… tqca  

… tdelibs  

… tdebase  

… tdeaddons  

… tdeutils  

… tdeartwork  

… imlib  Required for kuickshow - part of tdegraphics.

… tdegraphics  

… tdeadmin  

… tdmtheme  

… knemo  

… krusader  

… kvkbd  

close cd / PRGNAM=kvkbd VERSION=$TDE_VERSION BUILD=$BUILD TMP=/tmp/build rm -rf $TMP PKG=$TMP/package-$PRGNAM OUTPUT=/tmp mkdir -p $PKG mkdir $TMP/tmp-$PRGNAM untar_fn These patches provide Kvkbd build options • Use Win keys as modifier keys or for characters set with xmodmap. • Use alternative text on the num pad keys. • Show small icons on the buttons. • Show blank keys where AltGr doesn't produce a character.
Kvkbd can be run with a different style than the system style, for example kvkbd --style plastik for the basic Greek keyboard: ## change num-pad keys text echo $'--- src/MainWidget.cpp +++ src/MainWidget.cpp @@ -408 +408 @@ -\tTQString txt[9] = { "Ho\\nme", TQString::fromUtf8("▲"), "Pg\\nUp", +\tTQString txt[9] = { TQString::fromUtf8("H\u2190"), TQString::fromUtf8("▲"), TQString::fromUtf8("P\u2191"), @@ -410 +410 @@ -\t\t"End", TQString::fromUtf8("▼"), "Pg\\nDn" }; +\t\tTQString::fromUtf8("E\u2192"), TQString::fromUtf8("▼"), TQString::fromUtf8("P\u2193") }; @@ -453 +453 @@ -\tnuml->setText("Num\\nLock"); +\tnuml->setText(TQString::fromUtf8("\u2116")); @@ -479 +479 @@ -\tent->setText("En\\nter"); +\tent->setText("Ent");'|patch -p0 ## set small icons to better fit on buttons for keyboard used at default size echo $'--- src/MainWidget.cpp +++ src/MainWidget.cpp @@ -380 +380 @@ -\tquit->setPixmap(TQIconSet(SmallIcon("application-exit", TDEIcon::SizeMedium)).pixmap()); +\tquit->setPixmap(TQIconSet(SmallIcon("application-exit")).pixmap()); @@ -391 +391 @@ -\t\textent->setPixmap(TQIconSet(SmallIcon("media-seek-backward", TDEIcon::SizeMedium)).pixmap()); +\t\textent->setPixmap(TQIconSet(SmallIcon("media-seek-backward")).pixmap()); @@ -396 +396 @@ -\t\textent->setPixmap(TQIconSet(SmallIcon("media-seek-forward", TDEIcon::SizeMedium)).pixmap()); +\t\textent->setPixmap(TQIconSet(SmallIcon("media-seek-forward")).pixmap()); @@ -561 +561 @@ -\t\tpopup_menu->setPixmap(TQIconSet(SmallIcon("configure", TDEIcon::SizeMedium)).pixmap()); +\t\tpopup_menu->setPixmap(TQIconSet(SmallIcon("configure")).pixmap()); @@ -748 +748 @@ -\t\textent->setPixmap(TQIconSet(SmallIcon("media-seek-forward", TDEIcon::SizeMedium)).pixmap()); +\t\textent->setPixmap(TQIconSet(SmallIcon("media-seek-forward")).pixmap()); @@ -754 +754 @@ -\t\textent->setPixmap(TQIconSet(SmallIcon("media-seek-backward", TDEIcon::SizeMedium)).pixmap()); +\t\textent->setPixmap(TQIconSet(SmallIcon("media-seek-backward")).pixmap());'|patch -p0 ## configuration menu echo $'--- src/MainWidget.cpp +++ src/MainWidget.cpp @@ -515 +515 @@ -\t\tm->insertItem ( i18n("Font ..."), this, TQT_SLOT ( chooseFont() ) ); +\t\tm->insertItem ( i18n("Font"), this, TQT_SLOT ( chooseFont() ) ); @@ -520,0 +521 @@ +\t\tm->insertSeparator(); @@ -522 +523 @@ -\t\tm->insertItem ( i18n ("Keys color"), this, TQT_SLOT ( chooseKeysColor() ) ); +\t\tm->insertItem ( i18n ("Key color"), this, TQT_SLOT ( chooseKeysColor() ) );'|patch -p0 ## key spacing & sizing echo $'--- src/MainWidget.cpp +++ src/MainWidget.cpp @@ -323 +323 @@ -\tlalt->move ( lwin->x() +lwin->width() +6, sty+ ( 5*35 ) ); +\tlalt->move ( lwin->x() +lwin->width() +5, sty+ ( 5*35 ) ); @@ -340 +340 @@ -\tralt->resize ( 48,30 ); +\tralt->resize ( 50,30 ); @@ -350 +350 @@ -\trwin->resize ( 48,30 ); +\trwin->resize ( 50,30 ); @@ -359 +359 @@ -\tmnu->resize ( 49,30 ); +\tmnu->resize ( 50,30 ); @@ -369 +369 @@ -\trctrl->resize ( 49,30 ); +\trctrl->resize ( 45,30 ); @@ -379 +379 @@ -\tquit->move ( 524,15 ); +\tquit->move ( 526,15 ); @@ -388 +388 @@ -\textent->move (524, 85 ); +\textent->move (526, 85 ); @@ -558 +558 @@ -\t\tpopup_menu->move ( 524,15+35 ); +\t\tpopup_menu->move ( 526,15+35 ); @@ -959 +959 @@ -\tresize ( 96,47 ); +\tresize ( 64,31 );'|patch -p0 ## blank character display where AltGr does not provide extra characters echo $'--- src/VButton.cpp +++ src/VButton.cpp @@ -56,6 +56,6 @@ -\tif (c == " ") -\t{ -\t\t// use normal text in case altGr does not provide extra characters. -\t\t// This is required at least on US keyboards, where altGr works as Alt. -\t\tc = nc; -\t} +//\tif (c == " ") +//\t{ +//\t\t// use normal text in case altGr does not provide extra characters. +//\t\t// This is required at least on US keyboards, where altGr works as Alt. +//\t\tc = nc; +//\t} @@ -74,6 +74,6 @@ -\tif (c == " ") -\t{ -\t\t// use shift text in case altGr does not provide extra characters. -\t\t// This is required at least on US keyboards, where altGr works as Alt. -\t\tc = sc; -\t} +//\tif (c == " ") +//\t{ +//\t\t// use shift text in case altGr does not provide extra characters. +//\t\t// This is required at least on US keyboards, where altGr works as Alt. +//\t\tc = sc; +//\t}'|patch -p0 ## generate keycode for Win keys with single click so that they can be used for xmodmap echo $'--- src/MainWidget.cpp +++ src/MainWidget.cpp # ## donʹt lock the LWin button @@ -317 +317 @@ -\tlwin->setToggleButton ( true ); +\tlwin->setToggleButton ( false ); ## generate keycode on click rather than wait for next key-click @@ -318 +318,2 @@ -\tmod_keys.append ( lwin ); +\tconnect ( lwin, TQT_SIGNAL ( keyClick ( unsigned int ) ), this, TQT_SLOT ( keyPress ( unsigned int ) ) ); +\tother_keys.append( lwin ); # ## donʹt lock the RWin button @@ -354 +355 @@ -\trwin->setToggleButton ( true ); +\trwin->setToggleButton ( false ); ## generate keycode on click rather than wait for next key-click @@ -355 +356,2 @@ -\tmod_keys.append ( rwin ); +\tconnect ( rwin, TQT_SIGNAL ( keyClick ( unsigned int ) ), this, TQT_SLOT ( keyPress ( unsigned int ) ) ); +\tother_keys.append( rwin );'|patch -p0 chown_fn cd_builddir_fn ## rm -rf $TMP/tmp-$PRGNAM/$PRGNAM*/build-$PRGNAM/* cmake-toolchain_fn cmake \ -D CMAKE_TOOLCHAIN_FILE=./cmake-toolchain.cmake \ -D MOC_EXECUTABLE=$SYSROOT/x86/tqmoc \ -D INTLTOOL_MERGE_EXECUTABLE=$(which intltool-merge) \ -D KDE3_MEINPROC_EXECUTABLE:INTERNAL=$INSTALL_TDE/bin/meinproc-x86 \ -DCMAKE_C_FLAGS="$SLKCFLAGS" \ -DCMAKE_CXX_FLAGS="$SLKCFLAGS" \ -DCMAKE_C_COMPILER=$COMPILER \ -DCMAKE_CXX_COMPILER=$COMPILER_CXX \ -DCMAKE_BUILD_TYPE=Release \ -DCMAKE_INSTALL_PREFIX=$INSTALL_TDE \ -DCMAKE_MODULE_PATH=$PWD/../cmake/modules \ -DWITH_GCC_VISIBILITY="ON" \ -DBUILD_DOC="ON" \ -DBUILD_TRANSLATIONS="OFF" \ -Wno-dev \ .. make $NUMJOBS make DESTDIR=$PKG install strip_fn mkdir_install_fn doinst_sh_fn makepkg_fn ## don't need to install this ## installpkg $OUTPUT/$PRGNAM-$VERSION-$ARM-$BUILD.txz ## ROOT=$SYSROOT installpkg $OUTPUT/$PRGNAM-$VERSION-$ARM-$BUILD.txz There is a help page included with the tde-slackbuilds source which is not practical to add to this build. It can be added to this package from that source with, if needed, the index.cache.bz2 file built with meinproc. Translations are also available with the x86_64 build. close

… tdebluez