compiled on RPI3B with 5.4.51-piCore-v8 (beta release)

Compile Flags:
CFLAGS="-march=armv8-a+crc -mtune=cortex-a72 -Os -pipe"
LDFLAGS="-Wl,-O1"
export CFLAGS LDFLAGS

Dependencies:
automake
bash
compiletc
coreutils
dconf-dev
gettext-dev
gnome-common
gtk-doc
gtk2-dev
gtk2-gir
gtk3-gir
iso-codes
py3-pygments
unicode-character-database
unicode-cldr-emoji-annotations
unicode-emoji
vala-dev

Commands:

# Create fake python path for python scripts
# It must be python3,
# because they put python3 syntax in python2 script

sudo ln -s /usr/local/bin/python3 /usr/bin/python
sudo ln -s /usr/local/bin/python3 /usr/bin/python2.5

# fake path for gtk-query-immodules-3.0
sudo ln -s /usr/local/bin/gtk-query-immodules-3.0 /usr/local/bin/gtk-query-immodules-3.0-32

tar xf 1.5.23.tar.gz

cd ibus-1.5.23/

# Fix an issue with deprecated schema entries:
sed -i 's@/desktop/ibus@/org/freedesktop/ibus@g' \
    data/dconf/org.freedesktop.ibus.gschema.xml

./autogen.sh --prefix=/usr/local \
--sysconfdir=/usr/local/etc \
--libdir=/usr/local/lib \
--libexecdir=/usr/local/lib/ibus \
--datarootdir=/usr/local/share \
--enable-vala=yes \
--enable-python-library \
--enable-wayland \
--enable-static \
--enable-shared \
--enable-gtk-doc \
--with-python=/usr/local/bin/python3 \
--with-unicode-emoji-dir=/usr/local/share/unicode/emoji \
--with-emoji-annotation-dir=/usr/local/share/unicode/cldr/common/annotations \
--with-ucd-dir=/usr/local/share/unicode/ucd

### [ configure time: 3 min ]

# limit jobs to prevent system freeze
make -j3

### [ compile time: ~71 min ]

## optional check
make -k check

Adjustment for TC:

ibus.tcz:
- etc/profile.d/ibus.sh
 -> environment variables
- usr/local/tce.installed/ibus
 -> commands and file copy
- gtk-query-immodules-3.0-32
 -> a symbolic link to /usr/local/bin/gtk-query-immodules-3.0

ibus-gtk2.tcz:
- usr/local/tce.installed/ibus-gtk2
 -> refresh cache

Configuration Summary
-------------------------------------------------------------------------
Build options:
  Version                       1.5.23
  Install prefix                /usr/local
  Build shared libs             yes
  Build static libs             yes
  CFLAGS                        -march=armv8-a+crc -mtune=cortex-a72 -Os -pipe
  PYTHON                        /usr/local/bin/python3
  PYTHON2                       /usr/local/bin/python3
  Enable python2                yes
  Gtk2 immodule dir             /usr/local/lib/gtk-2.0/2.10.0/immodules
  Gtk3 immodule dir             /usr/local/lib/gtk-3.0/3.0.0/immodules
  Build gtk2 immodule           yes
  Build gtk3 immodule           yes
  Build XIM agent server        yes
  Build wayland support         yes
  Build gdk3 wayland support    yes
  Build appindicator support    yes (enabled, use --disable-appindicator to disable)
  Build python library          yes
  Build memconf modules         no
  Build dconf modules           yes (enabled, use --disable-dconf to disable)
  Build introspection           yes
  IBus-1.0.gir scannerflags     "--warn-all --identifier-prefix=IBus --symbol-prefix=ibus --c-include=ibus.h"
  Build vala binding            yes
  Build document                yes
  Build UI                      yes (enabled, use --disable-ui to disable)
  Build engine                  yes (enabled, use --disable-engine to disable)
  Enable key snooper            yes
  No snooper regexes            "firefox.*,.*chrome.*,.*chromium.*,terminator"
  Panel icon                    "ibus-keyboard"
  Enable surrounding-text       yes
  Enable Emoji dict             yes (enabled, use --disable-emoji-dict to disable)
  Unicode Emoji directory       /usr/local/share/unicode/emoji
  CLDR annotation directory     /usr/local/share/unicode/cldr/common/annotations
  Enable Unicode dict           yes (enabled, use --disable-unicode-dict to disable)
  UCD directory                 /usr/local/share/unicode/ucd
  Socket directory              "unix:tmpdir=$XDG_CACHE_HOME/ibus"
  Run test cases                yes
  Install tests                 no (disabled, use --enable-install-tests to enable)