Test repository to check push and ssh key
Find a file
2011-09-29 09:33:46 +01:00
accessibility remove obsolete Forte NOOPT files 2011-09-24 08:33:45 +01:00
afms
animations
apache-commons
apple_remote
autodoc cppcheck: unread Var deleted in autodoc, cx_c_pp.cxx 2011-09-26 22:02:39 +02:00
automation Undo basis/brand split: move testtool from basis to brand. 2011-09-23 17:55:40 +02:00
avmedia Use NSString's UTF8String method instead of the deprecated cString 2011-09-29 10:02:59 +03:00
basctl just silence the auto_ptr deprecations in isolation 2011-09-22 15:01:05 +01:00
basebmp
basegfx just silence the auto_ptr deprecations in isolation 2011-09-22 15:01:05 +01:00
basic callcatcher: unused code 2011-09-29 09:33:44 +01:00
bean Always link with user32 2011-09-22 15:46:15 +03:00
beanshell
berkeleydb Make Android cross-build working 2011-09-27 09:46:38 +02:00
bin
binaryurp convert binaryurp to gbuild 2011-09-25 23:43:06 +02:00
boost
bridges just silence the auto_ptr deprecations in isolation 2011-09-22 15:01:05 +01:00
cairo Hmm, why did I think the ATSUI API would be gone in the 10.5 SDK? 2011-09-27 17:53:25 +03:00
canvas Removed uses of rtl::O[U]String[Buffer]::operator sal_{char|Unicode} const *(). 2011-09-27 20:22:03 +02:00
chart2 Removed uses of rtl::O[U]String[Buffer]::operator sal_{char|Unicode} const *(). 2011-09-27 20:22:03 +02:00
cli_ure
codemaker Removed uses of rtl::O[U]String[Buffer]::operator sal_{char|Unicode} const *(). 2011-09-27 20:22:03 +02:00
comphelper remove obsolete include guard 2011-09-28 15:09:47 +01:00
configmgr
connectivity Removed uses of rtl::O[U]String[Buffer]::operator sal_{char|Unicode} const *(). 2011-09-27 20:22:03 +02:00
cosv
cppcanvas WaE: control reaches end of non-void function 2011-09-26 21:14:13 +03:00
cppu Removed uses of rtl::O[U]String[Buffer]::operator sal_{char|Unicode} const *(). 2011-09-27 20:22:03 +02:00
cppuhelper just silence the auto_ptr deprecations in isolation 2011-09-22 15:01:05 +01:00
cppunit Make Android cross-build working 2011-09-27 09:46:38 +02:00
cpputools
crashrep
cross_toolset/prj Make Android cross-build working 2011-09-27 09:46:38 +02:00
ct2n
cui re-work XPropertyList default extension handling to increase re-use 2011-09-28 09:09:12 +01:00
curl Make Android cross-build working 2011-09-27 09:46:38 +02:00
dbaccess remove archaic header guards 2011-09-29 09:33:46 +01:00
default_images Page Break: Changed the page break into a control 2011-09-23 22:24:36 +02:00
desktop ByteString->rtl::OStringBuffer 2011-09-29 09:33:46 +01:00
distro-configs Make Android cross-build working 2011-09-27 09:46:38 +02:00
dmake
drawinglayer
dtrans Removed uses of rtl::O[U]String[Buffer]::operator sal_{char|Unicode} const *(). 2011-09-27 20:22:03 +02:00
editeng callcatcher: unused code 2011-09-29 09:33:44 +01:00
embeddedobj
embedserv
epm
eventattacher
expat Make Android cross-build working 2011-09-27 09:46:38 +02:00
extensions Removed uses of rtl::O[U]String[Buffer]::operator sal_{char|Unicode} const *(). 2011-09-27 20:22:03 +02:00
external remove checks for unused BUILD_SPECIAL environment variable 2011-09-28 13:48:10 +02:00
extras
fileaccess
filter ByteString->rtl::OString[Buffer} 2011-09-29 09:33:45 +01:00
forms WaE: unused e 2011-09-26 16:28:56 +01:00
formula Revert "Fixx FormulaCompiler build after the O[U]String[Buffer] changes" 2011-09-27 23:28:58 +02:00
fpicker WaE: 'fileAttributesAtPath:traverseLink:' is deprecated 2011-09-29 00:54:46 +03:00
framework Removed uses of rtl::O[U]String[Buffer]::operator sal_{char|Unicode} const *(). 2011-09-27 20:22:03 +02:00
gdk-pixbuf
gettext
git-hooks
glib
graphite Upgrade graphite to 1.0.3 fix surrogate support 2011-09-22 22:49:07 +07:00
guw
hsqldb
hunspell Make Android cross-build working 2011-09-27 09:46:38 +02:00
hwpfilter Always link with user32 2011-09-22 15:46:15 +03:00
hyphen Make Android cross-build working 2011-09-27 09:46:38 +02:00
i18npool split 'test' into 'unotest' and 'test' to help dependencies 2011-09-28 17:55:26 +01:00
i18nutil
icc
icu Don't consider newer Apple compilers having "universal" byte order 2011-09-28 11:41:17 +03:00
idl Removed uses of rtl::O[U]String[Buffer]::operator sal_{char|Unicode} const *(). 2011-09-27 20:22:03 +02:00
idlc WaE: comparison between signed and unsigned integer expressions 2011-09-27 22:48:45 +03:00
instsetoo_native remove checks for unused BUILD_SPECIAL environment variable 2011-09-28 13:48:10 +02:00
io
javaunohelper
jfreereport Fix MinGW build of jfreereport. 2011-09-22 17:39:21 +02:00
jpeg
jurt
jvmaccess
jvmfwk
l10ntools Undo basis/brand split: move dynamic libraries from basis to brand. 2011-09-23 17:55:39 +02:00
languagetool
libcroco
libgsf
libpng
librsvg
libtextcat Make Android cross-build working 2011-09-27 09:46:38 +02:00
libvisio
libwpd
libwpg
libwps Uploading a new release of libwps 2011-09-28 14:34:36 +02:00
libxml2 Make Android cross-build working 2011-09-27 09:46:38 +02:00
libxmlsec
libxslt Make Android cross-build working 2011-09-27 09:46:38 +02:00
lingucomponent text can be const now 2011-09-28 16:03:49 +01:00
linguistic unused ctor, and use boost::noncopyable 2011-09-28 09:20:32 +01:00
lotuswordpro ensure m_pOwnerRow is NULL 2011-09-23 17:14:42 +01:00
lpsolve
lucene
m4/mac
MathMLDTD
mdds
Mesa
migrationanalysis
more_fonts new Linux Libertine G font release 2011-09-22 19:09:18 +02:00
moz Fix building moz on Mac OS X. 2011-09-28 13:54:24 +02:00
mysqlc set lang to en-US in order l10ntools can extract strings 2011-09-21 16:08:31 +02:00
mysqlcppconn
mythes Make Android cross-build working 2011-09-27 09:46:38 +02:00
neon
nlpsolver
np_sdk
nss Fix building moz on Mac OS X. 2011-09-28 13:54:24 +02:00
o3tl
odk
offapi
officecfg Manage Names: adapt menu to changes 2011-09-26 18:15:14 +02:00
ooo_custom_images
oovbaapi
oox conditionalise out presently unused class variables 2011-09-26 14:15:37 +01:00
openssl
package Removed uses of rtl::O[U]String[Buffer]::operator sal_{char|Unicode} const *(). 2011-09-27 20:22:03 +02:00
packimages
padmin remove archaic header guards 2011-09-29 09:33:46 +01:00
pango
postprocess Android now builds up to instsetoo_native 2011-09-28 16:47:49 +02:00
psprint_config
python
pyuno Removed uses of rtl::O[U]String[Buffer]::operator sal_{char|Unicode} const *(). 2011-09-27 20:22:03 +02:00
qadevOOo handle --enable-gio as well as --enable-gnome-vfs 2011-09-23 09:02:24 +01:00
rdbmaker
readlicense_oo
redland Android now builds up to instsetoo_native 2011-09-28 16:47:49 +02:00
regexp remove unused header and clean d.lst which should be empty 2011-09-27 19:41:05 +02:00
registry Removed uses of rtl::O[U]String[Buffer]::operator sal_{char|Unicode} const *(). 2011-09-27 20:22:03 +02:00
remotebridges
reportbuilder Fix reportbuilder build with MinGW. 2011-09-22 19:50:24 +02:00
reportdesign Removed uses of rtl::O[U]String[Buffer]::operator sal_{char|Unicode} const *(). 2011-09-27 20:22:03 +02:00
rhino
ridljar
rsc Look at GCC version, not whether MacOSX or not 2011-09-28 13:21:36 +03:00
sal next test -> unotest change 2011-09-29 00:27:16 +02:00
salhelper
sane
sax Removed uses of rtl::O[U]String[Buffer]::operator sal_{char|Unicode} const *(). 2011-09-27 20:22:03 +02:00
saxon
sc more unit test cut/paste redux 2011-09-28 15:32:14 +01:00
scaddins
sccomp
scp2 remove checks for unused BUILD_SPECIAL environment variable 2011-09-28 13:48:10 +02:00
scripting callcatcher: unused code 2011-09-26 10:18:39 +01:00
sd add GetParentDialog to VCL's Window, and remove DLGWIN & cut/paste 2011-09-27 15:07:12 +01:00
sdext Removed uses of rtl::O[U]String[Buffer]::operator sal_{char|Unicode} const *(). 2011-09-27 20:22:03 +02:00
setup_native Don't build l10ntools for non-desktop OSes 2011-09-29 10:08:49 +03:00
sfx2 Replace SvULongs with std::vector in sfx2 2011-09-29 08:09:19 +02:00
shell Removed uses of rtl::O[U]String[Buffer]::operator sal_{char|Unicode} const *(). 2011-09-27 20:22:03 +02:00
slideshow cppcheck: delete unneded variable in slideshow, OGLTrans_Tran...Impl.cxx 2011-09-26 22:02:39 +02:00
smoketestoo_native adapt make dev-install to unotest changes 2011-09-28 23:09:18 +02:00
solenv adapt make dev-install to unotest changes 2011-09-28 23:09:18 +02:00
soltools
sot
splitbuild bump to libexttextcat 2011-09-23 14:02:54 +01:00
starmath <= for extra safely I suppose 2011-09-26 12:59:36 +01:00
stax
stlport
stoc Removed uses of rtl::O[U]String[Buffer]::operator sal_{char|Unicode} const *(). 2011-09-27 20:22:03 +02:00
store
svl Always link with user32 2011-09-22 15:46:15 +03:00
svtools Replace SvULongs with std::vector in sfx2 2011-09-29 08:09:19 +02:00
svx callcatcher: unused code 2011-09-29 09:33:44 +01:00
sw ByteString->rtl::OString 2011-09-29 09:33:45 +01:00
swext set lang to en-US in order l10ntools can extract strings 2011-09-21 16:08:31 +02:00
sysui
tail_build Don't build l10ntools for non-desktop OSes 2011-09-29 10:08:49 +03:00
test install testdllapi.h correctly 2011-09-28 19:22:39 +01:00
testautomation remove checks for unused BUILD_SPECIAL environment variable 2011-09-28 13:48:10 +02:00
testgraphical
testtools
tomcat
toolkit callcatcher: unused code 2011-09-29 09:33:44 +01:00
tools fix another unotest/test breaker 2011-09-28 23:48:39 +02:00
translate_toolkit
twain
ucb Removed uses of rtl::O[U]String[Buffer]::operator sal_{char|Unicode} const *(). 2011-09-27 20:22:03 +02:00
ucbhelper
udkapi
udm
unixODBC
UnoControls
unodevtools Removed uses of rtl::O[U]String[Buffer]::operator sal_{char|Unicode} const *(). 2011-09-27 20:22:03 +02:00
unoil
unotest Rename and re-factor test and unotest to compile and run again 2011-09-28 17:55:26 +01:00
unotools callcatcher: another round of unused methods 2011-09-28 15:12:54 +01:00
unoxml
ure fix path to binaryurp.component 2011-09-26 00:12:18 +02:00
uui just silence the auto_ptr deprecations in isolation 2011-09-22 15:01:05 +01:00
vbahelper just silence the auto_ptr deprecations in isolation 2011-09-22 15:01:05 +01:00
vcl callcatcher: unused code 2011-09-29 09:33:44 +01:00
vigra
wizards Remote the python code for now. 2011-09-24 12:59:08 +02:00
writerfilter Removed uses of rtl::O[U]String[Buffer]::operator sal_{char|Unicode} const *(). 2011-09-27 20:22:03 +02:00
writerperfect If gradient type is not specified, assume linear 2011-09-27 17:05:31 +02:00
x11_extensions
xmerge
xml2cmp
xmlhelp Drop apparently unneeded inclusion of l10ntools/compilehelp.hxx 2011-09-25 15:22:02 +03:00
xmloff callcatcher: unused code 2011-09-29 09:33:44 +01:00
xmlreader
xmlscript
xmlsecurity
xpdf Use the right 'ar' and 'ranlib' when building with MinGW. 2011-09-22 19:50:23 +02:00
xsltml
zlib
.gitattributes
.gitignore Ignore the MSVC vc90.pdb files 2011-09-21 12:59:58 +03:00
autogen.sh
bootstrap.1
config.guess update config.guess and config.sub 2011-09-25 18:14:10 -04:00
config.sub update config.guess and config.sub 2011-09-25 18:14:10 -04:00
configure.in make configure check for cpp/poppler-version.h 2011-09-28 22:42:22 +02:00
COPYING
COPYING.LGPL
COPYING.MPL
download
g
GNUmakefile.mk
install-sh
Library_merged.mk
Makefile.in target 'all' should be the first one to make it the default one. 2011-09-28 15:54:57 -05:00
Module_tail_build.mk
ooo.lst.in Uploading a new release of libwps 2011-09-28 14:34:36 +02:00
oowintool
post_download.in Simplify 2011-09-26 15:09:39 +03:00
README.cross Add my autogen.lastrun too. 2011-09-27 16:30:35 +02:00
Repository.mk split 'test' into 'unotest' and 'test' to help dependencies 2011-09-28 17:55:26 +01:00
RepositoryExternal.mk
RepositoryFixes.mk Android now builds up to instsetoo_native 2011-09-28 16:47:49 +02:00
RepositoryModule_ooo.mk
set_soenv.in bump to libexttextcat 2011-09-23 14:02:54 +01:00
TEMPLATE.SOURCECODE.HEADER
unusedcode.easy callcatcher: unused code 2011-09-29 09:33:44 +01:00

Cross-compiling LibreOffice
===========================

Notes on cross-compiling LibreOffice, originally written by Tor
Lillqvist <tlillqvist@novell.com> <tml@iki.fi> in May, 2011, for later
history see git log.

My cross-compilation experimentation is going on for four platforms:
Windows, iOS, Android and PowerPC Mac OS X. I work on the master
branch of LibreOffice. Some other people have talked about setting up
a separate branch for Android work, or even separate clones at
github. I am not interested in that.

Cross-compilation of LibreOffice completely is not possible yet. Much
work has been done, "baby steps" for some platforms, much more for
others, but a lot remains. For iOS and Android this work is highly
experimental and done mostly in my own spare time just for the hacking
pleasure. No promise, explicit or implied, is given that it will ever
be finished.

Searching for information about cross-compilation of OpenOffice.org
(the predecessor of LibreOffice) you will find information about what
actually was not cross-compilation, but using QEMU.


General
-------

In GNU Autoconf terminology, "build" is the platform on which you are
running a build on some software and "host" is the platform on which
the software you are building will run. Only in the specific case of
building compilers and other programming tools is the term "target"
used to indicate the platform for which the tools your are building
will produce code. As LibreOffice is not a compiler, the "target" term
should not be used in the context of cross-compilation.

(For a case where all three of "build", "host" and "target" are
different: consider a gcc cross-compiler running on Windows, producing
code for Android, where the cross-compiler itself was built on
Linux. (This is a real case.) An interesting tidbit is that such
configurations are called "Canadian Cross".)

Even though the LibreOffice build mechanism is highly unorthodox, the
configure script takes the normal --build and --host options like any
GNU Autoconf -based configure script. To cross-compile, you basically
need just to specify a suitable --host option and things should work
out nicely. In practise, some more details might be needed. See
examples below.


What is so hard, then?
----------------------

Despite the fact that the configure script takes normal --build and
--host options, that is just the beginning. In practise a lot of work
was necessary to separate tests for "host" and "build" platforms in
the configure script. See the git log for details. And the reasonably
"standard" configure.in is just the top level; when we get down to the
actual makefilery used to build the bits of LibreOffice, it gets much
worse.


Windows
-------

There is some support in LibreOffice already (from OpenOffice.org) for
building it locally on Windows with the GNU tool-chain (MinGW). But as
far as I know, that work has never attempted cross-compilation.

This OOo-originated MinGW support attempts to support both running
Cygwin gcc in its -mno-cygwin mode, and a native MinGW compiler. The
-mno-cygwin mechanism in the Cygwin gcc is rapidly being obsoleted, if
it isn't already, and I have not attempted to try to keep it working;
in fact I have activly cleaned out mechanisms related to this. Ditto
for native MinGW. If one compiles natively on Windows, just use
Microsoft's compiler. OOo/LO has been built for Windows all the time
using that.

In my opinion, the only case where it makes sense to use MinGW is for
cross-compilation. There is just too much crack on Windows anyway, and
it is a semi-miracle (well, make that the result of years of work)
that the MSVC build under Cygwin works as nicely as it does.

MinGW is available as cross-build toolchains pre-packaged in more or
less official packages for many Linux distros including Debian, Fedora
and openSUSE. Personally I use the mingw32 packages in the openSUSE
Build Service, running on openSUSE:

http://download.opensuse.org/repositories/windows:/mingw:/win32/

You can install it on openSUSE like this:

zypper ar http://download.opensuse.org/repositories/windows:/mingw:/win32/SLE_11_SP1/windows:mingw:win32.repo
zypper in mingw32-cross-gcc mingw32-cross-gcc-c++ mingw32-python-devel \
    mingw32-libexpat-devel mingw32-libexpat mingw32-boost-devel \
    mingw32-libhyphen-devel mingw32-libhyphen mingw32-hyphen-en \
    mingw32-liblpsolve mingw32-liblpsolve-devel \
    mingw32-libxml2-devel mingw32-libxslt-devel mingw32-libicu \
    mingw32-libicu-devel mingw32-libgraphite2 mingw32-libgraphite2-devel \
    mingw32-cairo mingw32-cairo-devel mingw32-librsvg mingw32-librsvg-devel \
    mingw32-hunspell mingw32-hunspell-devel mingw32-libcurl \
    mingw32-libcurl-devel mingw32-libneon mingw32-libneon-devel \
    mingw32-libopenssl mingw32-libopenssl-devel mingw32-libtextcat \
    mingw32-libtextcat-devel mingw32-libdb mingw32-libdb-devel \
    mingw32-cross-pkg-config mingw32-pkg-config mingw32-libcppunit \
    mingw32-libcppunit-devel mingw32-libredland mingw32-libredland-devel \
    mingw32-libmythes mingw32-libmythes-devel

There might be more that are missing, please read carefully what autogen.sh
tells you, and either remove one of the --with-system-*, or install the
missing dependency.

It also looks like graphite2.pc needs tweaking in order to work right; but
that's likely to be fixed in the openSUSE project.

It is somewhat unclear how well thought-out the conditionals and code
for MinGW inside the OOo-originated code in LibreOffice actually
are. What I have noticed of it seems a bit randomish, with
copy-pasting having been preferred to factoring out differences.

The autogen.lastrun I use for my MinGW cross-compilation experimentation is:

CC=ccache i686-w64-mingw32-gcc
CXX=ccache i686-w64-mingw32-g++
CC_FOR_BUILD=ccache gcc
CXX_FOR_BUILD=ccache g++
--build=x86_64-unknown-linux-gnu
--host=i686-w64-mingw32
--with-distro=LibreOfficeWin32
--disable-activex
--disable-binfilter
--disable-build-mozilla
--disable-directx
--disable-ext-nlpsolver
--disable-ext-pdfimport
--disable-ext-presenter-console
--disable-ext-presenter-minimizer
--disable-ext-report-builder
--disable-ext-scripting-beanshell
--disable-ext-scripting-javascript
--disable-ext-wiki-publisher
--disable-ext-wiki-publisher
--disable-mozilla
--disable-zenity
--enable-python=system
--with-external-tar=/mnt/hemulen/ooo/git/master/src
--with-num-cpus=1
--with-max-jobs=1
--with-system-altlinuxhyph
--with-system-boost
--with-system-cairo
--with-system-cppunit
--with-system-curl
--with-system-db
--with-system-expat
--with-system-gettext
--with-system-hunspell
--with-system-icu
--with-system-libpng
--with-system-libwpd
--with-system-libwpg
--with-system-libwps
--with-system-libxml
--with-system-libxslt
--with-system-lpsolve
--with-system-mythes
--with-system-neon
--with-system-openssl
--with-system-redland
--with-vendor=no
--without-help
--without-helppack-integration
--without-myspell-dicts

For reference, Kendy's autogen.lastrun is:

CC=ccache i686-w64-mingw32-gcc
CXX=ccache i686-w64-mingw32-g++
CC_FOR_BUILD=ccache gcc
CXX_FOR_BUILD=ccache g++
--build=x86_64-unknown-linux-gnu
--host=i686-w64-mingw32
--with-num-cpus=4
--with-max-jobs=8
--without-junit
--disable-binfilter
--disable-build-mozilla
--disable-mozilla
--with-system-altlinuxhyph
--with-system-boost
--with-system-cairo
--with-system-cppunit
--with-system-curl
--with-system-db
--with-system-expat
--with-system-gettext
--with-system-graphite
--with-system-hunspell
--with-system-icu
--with-system-libpng
--with-system-libxml
--with-system-libxslt
--with-system-lpsolve
--with-system-mythes
--with-system-neon
--with-system-openssl
--with-system-redland
--without-myspell-dicts
--disable-directx
--disable-activex
--disable-extension-integration
--enable-symbols

Once you have compiled it, you may want to try to run it:

$ cd instsetoo_native/wntgcci.pro/LibreOffice_Dev/archive/install/en-US
$ tar xf LibO-Dev_OOO350m1_Win_x86_install-arc_en-US.tar.gz
$ cd LibO-Dev_OOO350m1_Win_x86_install-arc_en-US/LibO-dev\ 3.5/program
$ cp /usr/i686-w64-mingw32/sys-root/mingw/bin/* ./
$ wine soffice.exe

And if you are brave enough, you can even debug it.  First you have to add the
URE dll's to the wine's PATH using 'wine regedit' - see
http://www.winehq.org/docs/wineusr-guide/environment-variables, and add
Z:\local\libreoffice\master-mingw32\instsetoo_native\wntgcci.pro\LibreOffice_Dev\archive\install\en-US\LibO-Dev_OOO350m1_Win_x86_install-arc_en-US\LibO-dev 3.5\URE\bin
to "Path".

Then run linkoo, so that when you rebuild something, you can directly see the
changes the next time you run it:

solenv/bin/linkoo '<your_clone_dir>/instsetoo_native/wntgcci.pro/LibreOffice_Dev/archive/install/en-US/LibO-Dev_OOO350m1_Win_x86_install-arc_en-US/LibO-dev 3.5' <your_clone_dir>

And start debugging:

$ winedbg soffice.bin

Would be great to be able to use winedbg --gdb, but it was crashing here :-( -
but maybe you'll be more lucky.

TODO:

- installation
  - so far the make_installer.pl calls makecab.exe, uuidgen.exe, and
    others; would be best to avoid that if at all possible (using a free
    cab implementation, part of Wine or something)
  - MSI generation
  - if at all possible, the make dev-install installation (with links
    back to the build) should be done so that it would be directly
    executable via wine after doing make dev-install :-)

- runtime
  - no idea if the entire thing works after the installation at all; I
    suppose there will be runtime problems to look at too

- cleanup
  - enable & fix pieces that are currently disabled
    - --without-myspell-dicts
    - --disable-directx
    - --disable-activex
    - --disable-mozilla
  - much of the stuff currently relies on --with-system-*, and
    consequently on the mingw32-* openSUSE packages; might be good to be
    able to build with as few dependencies as possible - but that is low
    prio I think

- profiling
  - when all the above is sorted out, we should look at the speed of
    this vs. the speed of the MSVC version


iOS
---

iOS is the operating system of Apple's mobile devices. Clearly for a
device like the iPad it would be totally unacceptable to run a normal
LibreOffice application with a overlapping windows and mouse-oriented
GUI widgets. No work has been done (at least publicly) to design a
touch GUI for LibreOffice, so the work on cross-compiling LibreOffice
for iOS is extremely experimental, and of course partly pointless;)
But it is interesting and fun nonetheless.

Obviously it will make sense to build only a part of LibreOffice's
code for iOS. Most likely all GUI-oriented code should be left out,
and some iOS app that eventually wants to use the remaining bits will
handle all its GUI in a platform-dependent manner. How well it will be
possible to do such a split remains to be seen. As I said, this is
highly experimental and just in its baby steps phase.

Technically, one important special aspect of iOS is that apps are not
allowed to load own dynamic libraries. (System libraries are used in
the form of dynamic libraries, just like on MacOSX, of which iOS is a
variant.) So all the libraries in LibreOffice that normally are shared
libraries (DLLs on Windows, shared objects (.so) on Linux, dynamic
libraries on MacOSX (.dylib)) need to be built as static archives
instead. Obviously this will have some interesting consequences for
how UNO is implemented and used. None of that has been spared much
thought yet.

The Apple tool-chain for iOS cross-building is available only for
MacOSX, so that is where I have been doing it.

Here is my autogen.lastrun for iOS (device):
CXX=ccache /Developer/Platforms/iPhoneOS.platform/Developer/usr/bin/g++-4.2 -arch armv7 -isysroot /Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS4.3.sdk
CC=ccache /Developer/Platforms/iPhoneOS.platform/Developer/usr/bin/gcc-4.2 -arch armv7 -isysroot /Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS4.3.sdk
CC_FOR_BUILD=ccache /Xcode3/usr/bin/gcc-4.0
CXX_FOR_BUILD=ccache /Xcode3/usr/bin/g++-4.0
--with-distro=LibreOfficeiOS
--with-external-tar=/Volumes/ooo/git/master/src
--with-num-cpus=1
--with-max-jobs=1

And here for the iOS simulator:
CXX=ccache /Developer/Platforms/iPhoneSimulator.platform/Developer/usr/bin/g++-4.2 -arch i386 -isysroot /Developer/Platforms/iPhoneSimulator.platform/Developer/SDKs/iPhoneSimulator4.3.sdk
CC=ccache /Developer/Platforms/iPhoneSimulator.platform/Developer/usr/bin/gcc-4.2 -arch i386 -isysroot /Developer/Platforms/iPhoneSimulator.platform/Developer/SDKs/iPhoneSimulator4.3.sdk
CC_FOR_BUILD=ccache /Xcode3/usr/bin/gcc-4.0
CXX_FOR_BUILD=ccache /Xcode3/usr/bin/g++-4.0
--with-distro=LibreOfficeiOS
--with-external-tar=/Volumes/ooo/git/master/src
--with-num-cpus=1
--with-max-jobs=1
--disable-librsvg
--enable-debug


Android
-------

I don't know much about Android, but from a technical point of view it
is a kind of Linux, of course. As far as I know it is allowed for an
Android app to use shared objects, but if it isn't, then just the same
approach as used on iOS will need to be used.

As for the GUI, the same holds as said above for iOS.

I have done my Android cross-compilation work on Linux (openSUSE in
particular), but it could as well be done on MacOSX. The Android
cross-buld tool-chain (the "Native Development Kit", or NDK) is
available for Linux, MacOSX and Windows. (Trying to cross-compile from
Windows will probably drive you insane.)

Here is my autogen.lastrun for Android:
SYSBASE=/home/tml/android-ndk-r6/platforms/android-9/arch-arm
CC=ccache /home/tml/android-ndk-r6/toolchains/arm-linux-androideabi-4.4.3/prebuilt/linux-x86/bin/arm-linux-androideabi-gcc --sysroot /home/tml/android-ndk-r6/platforms/android-9/arch-arm
CXX=ccache /home/tml/android-ndk-r6/toolchains/arm-linux-androideabi-4.4.3/prebuilt/linux-x86/bin/arm-linux-androideabi-g++ --sysroot /home/tml/android-ndk-r6/platforms/android-9/arch-arm -I /home/tml/android-ndk-r6/sources/cxx-stl/gnu-libstdc++/include -I/home/tml/android-ndk-r6/sources/cxx-stl/gnu-libstdc++/libs/armeabi-v7a/include -L/home/tml/android-ndk-r6/sources/cxx-stl/gnu-libstdc++/libs/armeabi-v7a -fexceptions -frtti
AR=/home/tml/android-ndk-r6/toolchains/arm-linux-androideabi-4.4.3/prebuilt/linux-x86/bin/arm-linux-androideabi-ar
NM=/home/tml/android-ndk-r6/toolchains/arm-linux-androideabi-4.4.3/prebuilt/linux-x86/bin/arm-linux-androideabi-nm
OBJDUMP=/home/tml/android-ndk-r6/toolchains/arm-linux-androideabi-4.4.3/prebuilt/linux-x86/bin/arm-linux-androideabi-objdump
RANLIB=/home/tml/android-ndk-r6/toolchains/arm-linux-androideabi-4.4.3/prebuilt/linux-x86/bin/arm-linux-androideabi-ranlib
STRIP=/home/tml/android-ndk-r6/toolchains/arm-linux-androideabi-4.4.3/prebuilt/linux-x86/bin/arm-linux-androideabi-strip
CC_FOR_BUILD=ccache gcc
CXX_FOR_BUILD=ccache g++
--build=x86_64-unknown-linux-gnu
--disable-zenity
--with-distro=LibreOfficeAndroid
--with-external-tar=/mnt/hemulen/ooo/git/master/src
--disable-python
--with-num-cpus=1
--with-max-jobs=1
--without-helppack-integration
--without-myspell-dicts


PowerPC Mac OS X
----------------

Cross-compiling for PowerPC Mac OS X from Intel Mac OS X will probably
be easy. The APIs available should after all be closely identical to
those on Intel Mac OS X, and LibreOffice builds fine natively on
PowerPC Mac already. I have just started experimenting with it. My
autogen.lastrun looks like this:

CC=ccache /Xcode3/usr/bin/gcc-4.0 -arch ppc
CXX=ccache /Xcode3/usr/bin/g++-4.0 -arch ppc
CC_FOR_BUILD=ccache /Xcode3/usr/bin/gcc-4.0
CXX_FOR_BUILD=ccache /Xcode3/usr/bin/g++-4.0
--build=i386-apple-darwin10.7.0
--host=powerpc-apple-darwin10
--disable-mozilla
--disable-build-mozilla
--with-external-tar=/Volumes/ooo/git/master/src



That's all, thank you, and have a nice day. People with commit access,
feel free to edit this document, and add yourself below. Sorry for
writing now initially from such a personal point of view.

--Tor Lillqvist <tlillqvist@novell.com>, <tml@iki.fi>