MokoMakefile

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m (Known MokoMakefile errors)
(Developing with MokoMakefile)
Line 274: Line 274:
 
   cd $OMDIR/openmoko/
 
   cd $OMDIR/openmoko/
 
   quilt new mycoolpackage.patch
 
   quilt new mycoolpackage.patch
   mkdir trunk/oe/packages/mycoolpackage
+
   mkdir trunk/openembedded/packages/mycoolpackage
   quilt add trunk/oe/packages/mycoolpackage/mycoolpackage_1.bb
+
   quilt add trunk/openembedded/packages/mycoolpackage/mycoolpackage_1.bb
   quilt edit trunk/oe/packages/mycoolpackage/mycoolpackage_1.bb
+
   quilt edit trunk/openembedded/packages/mycoolpackage/mycoolpackage_1.bb
  
 
The file should have the following content:
 
The file should have the following content:
Line 295: Line 295:
  
 
This is not all. We also need to tell MokoMakfile that it needs to build and include the package in the image. To do this, do
 
This is not all. We also need to tell MokoMakfile that it needs to build and include the package in the image. To do this, do
   $OMDIR/openmoko# quilt edit trunk/oe/packages/tasks/task-openmoko.bb
+
   $OMDIR/openmoko# quilt edit trunk/openembedded/packages/tasks/task-openmoko.bb
 
Here, increase the value '''PR''' by one and add '''mycoolpackage \''' (with the backslash!) just before the line reading '''#  update-alternatives \'''.
 
Here, increase the value '''PR''' by one and add '''mycoolpackage \''' (with the backslash!) just before the line reading '''#  update-alternatives \'''.
  

Revision as of 20:35, 17 July 2008


MokoMakefile is a Makefile which saves lots of work when setting up an Openmoko build environment. By automating the setup process of a new Openmoko build environment, it provides an environment which is configured the same for all the existing developers and should therefore be preferred over manual procedures or individual setup procedures. It brings the same repeatability to build environment creation and maintenance as that which the BitBake scripts bring to OpenEmbedded ease and standardize the process of building OpenEmbedded.

Unlike the manual process described at Building Openmoko from scratch, MokoMakefile does not install anything into your system (it can and should be started as normal user). MokoMakefile is a wrapper around all that is required to make it easy to set up and maintain a development environment that fully complies with the setup instructions published by Openmoko.

MokoMakefile is developed by Rod Whitby - it is not an official product of Openmoko (although I would be happy for them to pick it up and use it internally). If there is any discrepancy between the official Openmoko build instructions, and the operation of the MokoMakefile, then you should consider the official instructions to be correct.

The MokoMakefile is able to build both OM-2007.2 and QTopia-X11 images.

MokoMakefile also builds the QEMU-based Neo1973 emulator as part of the build process and has make targets to install the Openmoko images into it and run it. These commands can also be used without downloading and building the whole Openmoko OpenEmbedded distribution. This part is described in Using QEMU with MokoMakefile.

Contents

Requirements for building Openmoko

Independent on whether MokoMakefile or a manual process is used to setup an Openmoko build environment, there are several requirements which must be fulfilled in order for the Openmoko build to succeed:

  • RAM: The build host needs to have at least 512MB of RAM, and about the same amount of swap. Some packages built by OpenEmbedded like busybox are built by compiling all source files into one binary which causes gcc to grow beyond 300MB of size and no part of this memory may be on swap for the compile to finish in predictable time. For busybox, this can be turned off, but turning this off means that busybox will not as well optimized by gcc.
  • Disk space: You need about 12 GB of available disk space for the Openmoko build to succeed (see below for a tip on how to reduce this).
  • Time: The initial build takes at least 5 hours (on 2GHz core2duo without multiprocessor optimization) and may take several days on slower machines.

Required software

Some distribution specific hints on preparing your build host for building OpenEmbedded are on http://wiki.openembedded.net/index.php/OEandYourDistro but they may be outdated, incomplete and do not cover everything which Openmoko needs to build.

A good guide is the section on build host prerequisites in Building Openmoko from scratch

If you forgot anything which OE needs itself, OE will tell you shortly after you start building, but it does not check build dependencies of Openmoko, so you either have to install them before starting or install them after the build failed. OpenEmbedded will continue where it stopped when you restart the build afterwards.

Package requirements by distribution

Your distribution needs to provide these commands in order for OpenEmbedded to start building:

subversion texi2html texinfo help2man

Openmoko needs the development packages (with header files, development libraries and tools) in order to finish building:

ncurses zlib (or libz) OpenSSL GTK++

Because there are bugs in the interaction of QEMU and GCC-4, you'll need a copy of gcc-3.x installed as well.

Debian / Ubuntu
 apt-get install subversion build-essential help2man diffstat texi2html texinfo cvs gawk cogito
 apt-get install libncurses5-dev zlib1g-dev libssl-dev libgtk2.0-dev 
 # To prevent errors in host validation
 apt-get install ca-certificates
 # For Openmoko 2007.2 using BitBake-1.8.8:
 apt-get install python-pysqlite2 sqlite3 sqlite3-doc python-pysqlite2-dbg
 # For building faster
 apt-get install quilt python-psyco ccache
 # For qemu, install a second compiler for bug avoidance; MokoMakefile knows to look for it.
 apt-get install gcc-3.4 g++-3.4 libsdl1.2-dev lynx netpbm dosfstools
 # On Ubuntu 8.04, the following was required instead of cogito:
 apt-get install git-core
SuSE

For building Openmoko on 10.3, you need

gcc-c++ ncurses-devel zlib-devel libopenssl-devel gtk2-devel subversion diffstat texinfo help2man

For MokoMakefile to not fail on compiling qemu-user, you need to use gcc33:

wget download.opensuse.org/repositories/devel:/tools:/gcc/openSUSE_Factory/i586/{cpp,gcc}33-3.3.3-41.8.i586.rpm
rpm -Uhv {cpp,gcc}33-3.3.3-41.8.i586.rpm

See also the Talk page on Building on SuSE Linux 10.3-AMD64

10.1 and 10.2: same packages as 10.3, but install openssl-devel instead of libopenssl-devel.

For all distributions

As the QEMU-based neo1973 emulator is also built as part of the build process started by MokoMakefile, so you need gcc-3.3 and other packages for building QEMU installed. See the build requirements section in Using QEMU with MokoMakefile for information on the required software.

If you are having problems compiling QEMU and do not need it, you can disable building of QEMU by adding following line to build/conf/local.conf file:

ENABLE_BINARY_LOCALE_GENERATION = "0"
Proxy

Users behind a proxy should ensure that their proxy is configured in their wgetrc file as the http_proxy environment variable is unset by MokoMakefile.

Building Openmoko with MokoMakefile

Preparations

Create your $OMDIR directory (note that you can change ~/moko to any directory you like. If you have your ~moko dir mounted from a different file system, be sure to edit /etc/mtab to add the 'exec' permission to the file system, else bitbake will fail with error messages stating that /usr/bin/env is an invalid interpreter):

  mkdir ~/moko ; cd ~/moko

MokoMakefile

Grab MokoMakefile:

  wget http://www.rwhitby.net/files/openmoko/Makefile 

If that doesn't work, try

  wget http://svn.projects.openmoko.org/svnroot/mokomakefile/trunk/Makefile
NOTE: MokoMakefile uses BitBake 1.8.8 which requires python-sqlite2 and sqlite-3.3 or later. Users of SUSE Linux 10.1 can update to the version of openSUSE 10.2


Environment

Set up the environment:

  make setup

If you want to make the ASU or FSO instead of the OM2007.2, see Distributions, you need to edit your Makefile. Change OM_GIT_BRANCH to one of the following:

 OM_GIT_BRANCH := org.openmoko.dev        # OM2007.2
 OM_GIT_BRANCH := org.openmoko.asu.dev    # ASU
 OM_GIT_BRANCH := org.openmoko.asu.stable # ASU stable
 OM_GIT_BRANCH := org.openembedded.dev    # FSO


Buiding

Before starting a lengthy make process, check the Tips section below for how to make Make multicore aware. You may want to modify the build/conf/local.conf file for your target (emulation/chroot) environment:

  make openmoko-devel-image
  (or use "make openmoko-qtopia-x11-image" if you're building the ASU)
  (or use "make fso-image" if you're building the FSO)

Hint: The images build with this command can be found under {$OMDIR}/build/tmp/deploy/images/neo1973

This will set up the recommended directory structure as described in Building Openmoko from scratch, will download all the required software (from the right places with the right versions), and will immediately start building an image.

Once you have done this, you can choose to continue using the MokoMakefile to initiate your subsequent builds, or you can go into the build directory and run bitbake commands manually. The choice is yours.

Updating the environment

For easy maintenance of your build environment the following commands are available.

1 - To update the MokoMakefile to the latest version:

  make update-makefile 

2 - To make sure that any recent changes to the build directory structure have been applied:

  make setup 

3 - To update the Openmoko repository checkout and the MokoMakefile patches to the latest version:

  make update

A quick way to rebuild a new image with the latest updates:

  make update-makefile && make setup update openmoko-devel-image

Build issues

First, make sure that the problem is reproducible after running

make update-makefile && make setup && make update

then run

make clean-package-<foo>

(where you replace <foo> with the name of the package which is failing)

and finally

make openmoko-devel-image

With luck - you should now have images in your $omdir/build/tmp/deploy/glibc/images/neo1973/ directory. You can then |flash these.


If not, and you can get the error to occur three times in a row after running that sequence of commands (including the update and setup steps) three times, then feel free to report it to rwhitby in #openmoko on IRC.

If you have chronic build problems, cleaning your environment variables and re-running the build from scratch may help. The following script should remove all non-essential variables; you should also manually trim your path to the minimum.

 `env | grep -Ev '^SHELL=|^TERM=|^OLDPWD=|^USER=|^USERNAME=|^PATH=|^EDITOR=|^LANG=|^HOME=|^DISPLAY=|^_='  | sed 's/^\(.*\)=.*/unset \1/'`

(you must include the backtics). Note that on some boxes it is necessary to call "make" by typing "/usr/bin/make" afterwards.


On current ubuntu boxes another trick is necessary: glibc_2.6.1 fails to build since it is unable to generate the necessary locales until you type in the following line:

sudo sysctl -w vm.mmap_min_addr=0

Note that this temporarily disables a new security vulnerability check that has entered /etc/sysctrl - but that makes problems with loads of applications. To re-enable this check do the following:

sudo sysctl -w vm.mmap_min_addr=65536

See the talk page of this article for more details on this solution.

Known MokoMakefile errors

Fixes for distribution/environment-specific or isolated issues

Work-arounds for temporary or isolated problems can be found and should be added to the Discussion page which is associated with this page. As they are fixed, they will be removed from that page.

Tips

  • Make sure umask is set to 0022 before you run "make setup"
  • You can reduce the amount of consumed disk space significantly by adding
  INHERIT += "rm_work"

in your local.conf (e.g. ~/moko/build/conf/local.conf). This will remove the contents of each build/tmp/work/*/<package> directory after the corresponding package builds correctly. As of 10/16/07, this appears to be present in local.conf by default.

  • If a certain package does not build due to corrupted download or some such try to remove the sources and rebuild it.
rm sources/<package>*
cd build
. ../setup-env
bitbake -crebuild <package>

after that your build might just work again.

  • For people with multiple CPU's (or dual-core ones) this small patch might be useful to build things faster.

Edit the local.conf and add the following lines:

PARALLEL_MAKE = "-j 4"
BB_NUMBER_THREADS = "4"

Change the PARALLEL_MAKE and BB_NUMBER_THREADS values to something that suits better if it chokes your machine.

  • I have some problem with the parallel building, mkfs.jffs failed to build the image because the directory was modify while the building of the fs. patrick.hetu 02:19, 27 May 2008 (UTC)
  • If you encounter an error related with the qemu-native package and not compiling for the qemu, you can edit the build/conf/local.conf file and add ENABLE_BINARY_LOCALE_GENERATION = "0" line to avoid the error.
  • To prevent building tons of locales, add a line like this to local.conf:
GLIBC_GENERATE_LOCALES = "en_US.UTF-8 nl_NL.UTF-8"
  • To not build any binary locales at all, add this to local.conf:
ENABLE_BINARY_LOCALE_GENERATION = "0"
  • If you want to rebuild the package indexes (for instance, after compiling a new version of a package) without building openmoko-devel-image, run make build-package-package-index.

User:Wurp will update this to be a little more comprehensible, but maybe it can help someone as-is in the meantime:

  • If MokoMakefile always fails on some fetch in zlib, just find the binary somewhere, add it to the downloads or sources directory manually (create the .md5 matching file if necessary), and retry.

Useful commands

Here is the list (not complete) of useful MokoMakefile commands (actually make targets) and a short description of each one. These should be run inside $OMDIR directory.

make openmoko-devel-image 
build the full development image
make openmoko-devel-tools 
build statically-linked dfu-util and openocd binaries
make openmoko-toolchain 
builds toolchain
make qemu 
builds qemu, downloads flash images from official repository, flashes qemu emulated Neo1973 and runs emulator (see also Openmoko under QEMU).
make qemu-local 
same as make qemu, but uses locally built images instead of official ones.
make run-qemu 
runs qemu with usb keyboard (note: qemu must first be built!). This target starts the emulator with some predefined set of options. If you need to start it with other options (enable telnet, etc), see QEMU_command_line.
make build-package-<package name> 
buids <package name> package
make update-makefile 
updates MokoMakefile
make clean-package-<foo>
cleans the "<foo>" package
make setup 
to make sure that any recent changes to the build directory structure have been applied
make update 
to update the Openmoko repository checkout and the MokoMakefile patches to the latest version

Developing with MokoMakefile

NOTE: If using MokoMakefile with OM2007.2 then references to $OMDIR/openmoko should be replaced with $OMDIR/openembedded. Also references to tmp/work/armv4t-linux should be replaced with tmp/work/fic-gta01-angstrom-linux-gnueabi


For the following explanations $OMDIR is the directory where there Makefile puts all the stuff.

To make in-tree changes and have them built and used by qemu:

 cd $OMDIR/openmoko
 quilt new descriptive-patch-name.patch
 quilt add trunk/src/name-of-file-to-change # do this for every file you are about to modify
 ...make the changes...
 quilt refresh # this creates a file in $OMDIR/patches/openmoko-HEAD/ and updates the quilt series file there

Note: Do NOT use absolute paths as this confuses quilt and will get you a diff of the file against /dev/null!

To build the changes and have them used by qemu:

 make build-qemu
 make flash-qemu-local
 make run-qemu

If you want to modify applications instead of the openmoko toolchain, this is what you have to do (example: openmoko-messages):

 cd $OMDIR/build
 . ../setup-env
 bitbake -c unpack openmoko-messages
 cd tmp/work/armv4t-linux/openmoko-messages-0.0.1+svnnow-r2_2276/openmoko-messages/
 ...make the changes...
 cd -
 bitbake openmoko-messages

Then continue with MokoMakefile usage.

If you want to add an application to your openmoko distribution, do this: All file edits should be done using quilt as described above. That way a patch can easily be submitted to the openmoko project. First, create a directory that will correspond to your package and edit a .bb file in there:

 cd $OMDIR/openmoko/
 quilt new mycoolpackage.patch
 mkdir trunk/openembedded/packages/mycoolpackage
 quilt add trunk/openembedded/packages/mycoolpackage/mycoolpackage_1.bb
 quilt edit trunk/openembedded/packages/mycoolpackage/mycoolpackage_1.bb

The file should have the following content:

 DESCRIPTION = "This is a cool package"
 SECTION = "username/mycoolpackage"
 PV = "1"
 
 inherit autotools
 
 SRC_URI = "http://www.example.com/download/mycoolpackage-1.tar.gz"

Explanation:

  • DESCRIPTION - Just a short text explaining the package
  • SECTION - I have no clue, but I'll use username/mycoolpackage for now
  • PV - Package Version
  • inherit autotools - The package can be compiled by './configure && make && make install' so we tell MokoMakefile to do it this way.
  • SRC_URI = ... - This is the download location of the package source. It's imperative that the tar.gz contains a directory called packagename-packageversion (in this case: mycoolpackage-1) so that MokoMakefile can find it automatically or the build will fail.

This is not all. We also need to tell MokoMakfile that it needs to build and include the package in the image. To do this, do

 $OMDIR/openmoko# quilt edit trunk/openembedded/packages/tasks/task-openmoko.bb

Here, increase the value PR by one and add mycoolpackage \ (with the backslash!) just before the line reading # update-alternatives \.

Now run

 quilt refresh
 cd ..
 make update openmoko-devel-image

And if everything's alright you should now have an OpenMoko image to flash to your phone or run in qemu as described above.

Hello World application

There is a Hello World! tutorial available too.

Testimonials

MokoMakefile is recommended by 4 out of 4 new developers on #openmoko, with testimonials such as "For some reason last night I couldn't get my manual install of everything to work (bb complained about my bbpath I think) ... but with your makefile, it works great!", "MokoMakefile rocks!", "Wow this build system is nice - it just seems more polished than my gumstix toolchain buildroot system", and "make openmoko-devel-image :) - no magic there".

Project page: http://mokomakefile.projects.openmoko.org/

Personal tools


MokoMakefile is a Makefile which saves lots of work when setting up an Openmoko build environment. By automating the setup process of a new Openmoko build environment, it provides an environment which is configured the same for all the existing developers and should therefore be preferred over manual procedures or individual setup procedures. It brings the same repeatability to build environment creation and maintenance as that which the BitBake scripts bring to OpenEmbedded ease and standardize the process of building OpenEmbedded.

Unlike the manual process described at Building Openmoko from scratch, MokoMakefile does not install anything into your system (it can and should be started as normal user). MokoMakefile is a wrapper around all that is required to make it easy to set up and maintain a development environment that fully complies with the setup instructions published by Openmoko.

MokoMakefile is developed by Rod Whitby - it is not an official product of Openmoko (although I would be happy for them to pick it up and use it internally). If there is any discrepancy between the official Openmoko build instructions, and the operation of the MokoMakefile, then you should consider the official instructions to be correct.

The MokoMakefile is able to build both OM-2007.2 and QTopia-X11 images.

MokoMakefile also builds the QEMU-based Neo1973 emulator as part of the build process and has make targets to install the Openmoko images into it and run it. These commands can also be used without downloading and building the whole Openmoko OpenEmbedded distribution. This part is described in Using QEMU with MokoMakefile.

Requirements for building Openmoko

Independent on whether MokoMakefile or a manual process is used to setup an Openmoko build environment, there are several requirements which must be fulfilled in order for the Openmoko build to succeed:

  • RAM: The build host needs to have at least 512MB of RAM, and about the same amount of swap. Some packages built by OpenEmbedded like busybox are built by compiling all source files into one binary which causes gcc to grow beyond 300MB of size and no part of this memory may be on swap for the compile to finish in predictable time. For busybox, this can be turned off, but turning this off means that busybox will not as well optimized by gcc.
  • Disk space: You need about 12 GB of available disk space for the Openmoko build to succeed (see below for a tip on how to reduce this).
  • Time: The initial build takes at least 5 hours (on 2GHz core2duo without multiprocessor optimization) and may take several days on slower machines.

Required software

Some distribution specific hints on preparing your build host for building OpenEmbedded are on http://wiki.openembedded.net/index.php/OEandYourDistro but they may be outdated, incomplete and do not cover everything which Openmoko needs to build.

A good guide is the section on build host prerequisites in Building Openmoko from scratch

If you forgot anything which OE needs itself, OE will tell you shortly after you start building, but it does not check build dependencies of Openmoko, so you either have to install them before starting or install them after the build failed. OpenEmbedded will continue where it stopped when you restart the build afterwards.

Package requirements by distribution

Your distribution needs to provide these commands in order for OpenEmbedded to start building:

subversion texi2html texinfo help2man

Openmoko needs the development packages (with header files, development libraries and tools) in order to finish building:

ncurses zlib (or libz) OpenSSL GTK++

Because there are bugs in the interaction of QEMU and GCC-4, you'll need a copy of gcc-3.x installed as well.

Debian / Ubuntu
 apt-get install subversion build-essential help2man diffstat texi2html texinfo cvs gawk cogito
 apt-get install libncurses5-dev zlib1g-dev libssl-dev libgtk2.0-dev 
 # To prevent errors in host validation
 apt-get install ca-certificates
 # For Openmoko 2007.2 using BitBake-1.8.8:
 apt-get install python-pysqlite2 sqlite3 sqlite3-doc python-pysqlite2-dbg
 # For building faster
 apt-get install quilt python-psyco ccache
 # For qemu, install a second compiler for bug avoidance; MokoMakefile knows to look for it.
 apt-get install gcc-3.4 g++-3.4 libsdl1.2-dev lynx netpbm dosfstools
 # On Ubuntu 8.04, the following was required instead of cogito:
 apt-get install git-core
SuSE

For building Openmoko on 10.3, you need

gcc-c++ ncurses-devel zlib-devel libopenssl-devel gtk2-devel subversion diffstat texinfo help2man

For MokoMakefile to not fail on compiling qemu-user, you need to use gcc33:

wget download.opensuse.org/repositories/devel:/tools:/gcc/openSUSE_Factory/i586/{cpp,gcc}33-3.3.3-41.8.i586.rpm
rpm -Uhv {cpp,gcc}33-3.3.3-41.8.i586.rpm

See also the Talk page on Building on SuSE Linux 10.3-AMD64

10.1 and 10.2: same packages as 10.3, but install openssl-devel instead of libopenssl-devel.

For all distributions

As the QEMU-based neo1973 emulator is also built as part of the build process started by MokoMakefile, so you need gcc-3.3 and other packages for building QEMU installed. See the build requirements section in Using QEMU with MokoMakefile for information on the required software.

If you are having problems compiling QEMU and do not need it, you can disable building of QEMU by adding following line to build/conf/local.conf file:

ENABLE_BINARY_LOCALE_GENERATION = "0"
Proxy

Users behind a proxy should ensure that their proxy is configured in their wgetrc file as the http_proxy environment variable is unset by MokoMakefile.

Building Openmoko with MokoMakefile

Preparations

Create your $OMDIR directory (note that you can change ~/moko to any directory you like. If you have your ~moko dir mounted from a different file system, be sure to edit /etc/mtab to add the 'exec' permission to the file system, else bitbake will fail with error messages stating that /usr/bin/env is an invalid interpreter):

  mkdir ~/moko ; cd ~/moko

MokoMakefile

Grab MokoMakefile:

  wget http://www.rwhitby.net/files/openmoko/Makefile 

If that doesn't work, try

  wget http://svn.projects.openmoko.org/svnroot/mokomakefile/trunk/Makefile
NOTE: MokoMakefile uses BitBake 1.8.8 which requires python-sqlite2 and sqlite-3.3 or later. Users of SUSE Linux 10.1 can update to the version of openSUSE 10.2


Environment

Set up the environment:

  make setup

If you want to make the ASU or FSO instead of the OM2007.2, see Distributions, you need to edit your Makefile. Change OM_GIT_BRANCH to one of the following:

 OM_GIT_BRANCH := org.openmoko.dev        # OM2007.2
 OM_GIT_BRANCH := org.openmoko.asu.dev    # ASU
 OM_GIT_BRANCH := org.openmoko.asu.stable # ASU stable
 OM_GIT_BRANCH := org.openembedded.dev    # FSO


Buiding

Before starting a lengthy make process, check the Tips section below for how to make Make multicore aware. You may want to modify the build/conf/local.conf file for your target (emulation/chroot) environment:

  make openmoko-devel-image
  (or use "make openmoko-qtopia-x11-image" if you're building the ASU)
  (or use "make fso-image" if you're building the FSO)

Hint: The images build with this command can be found under {$OMDIR}/build/tmp/deploy/images/neo1973

This will set up the recommended directory structure as described in Building Openmoko from scratch, will download all the required software (from the right places with the right versions), and will immediately start building an image.

Once you have done this, you can choose to continue using the MokoMakefile to initiate your subsequent builds, or you can go into the build directory and run bitbake commands manually. The choice is yours.

Updating the environment

For easy maintenance of your build environment the following commands are available.

1 - To update the MokoMakefile to the latest version:

  make update-makefile 

2 - To make sure that any recent changes to the build directory structure have been applied:

  make setup 

3 - To update the Openmoko repository checkout and the MokoMakefile patches to the latest version:

  make update

A quick way to rebuild a new image with the latest updates:

  make update-makefile && make setup update openmoko-devel-image

Build issues

First, make sure that the problem is reproducible after running

make update-makefile && make setup && make update

then run

make clean-package-<foo>

(where you replace <foo> with the name of the package which is failing)

and finally

make openmoko-devel-image

With luck - you should now have images in your $omdir/build/tmp/deploy/glibc/images/neo1973/ directory. You can then |flash these.


If not, and you can get the error to occur three times in a row after running that sequence of commands (including the update and setup steps) three times, then feel free to report it to rwhitby in #openmoko on IRC.

If you have chronic build problems, cleaning your environment variables and re-running the build from scratch may help. The following script should remove all non-essential variables; you should also manually trim your path to the minimum.

 `env | grep -Ev '^SHELL=|^TERM=|^OLDPWD=|^USER=|^USERNAME=|^PATH=|^EDITOR=|^LANG=|^HOME=|^DISPLAY=|^_='  | sed 's/^\(.*\)=.*/unset \1/'`

(you must include the backtics). Note that on some boxes it is necessary to call "make" by typing "/usr/bin/make" afterwards.


On current ubuntu boxes another trick is necessary: glibc_2.6.1 fails to build since it is unable to generate the necessary locales until you type in the following line:

sudo sysctl -w vm.mmap_min_addr=0

Note that this temporarily disables a new security vulnerability check that has entered /etc/sysctrl - but that makes problems with loads of applications. To re-enable this check do the following:

sudo sysctl -w vm.mmap_min_addr=65536

See the talk page of this article for more details on this solution.

Known MokoMakefile errors

Fixes for distribution/environment-specific or isolated issues

Work-arounds for temporary or isolated problems can be found and should be added to the Discussion page which is associated with this page. As they are fixed, they will be removed from that page.

Tips

  • Make sure umask is set to 0022 before you run "make setup"
  • You can reduce the amount of consumed disk space significantly by adding
  INHERIT += "rm_work"

in your local.conf (e.g. ~/moko/build/conf/local.conf). This will remove the contents of each build/tmp/work/*/<package> directory after the corresponding package builds correctly. As of 10/16/07, this appears to be present in local.conf by default.

  • If a certain package does not build due to corrupted download or some such try to remove the sources and rebuild it.
rm sources/<package>*
cd build
. ../setup-env
bitbake -crebuild <package>

after that your build might just work again.

  • For people with multiple CPU's (or dual-core ones) this small patch might be useful to build things faster.

Edit the local.conf and add the following lines:

PARALLEL_MAKE = "-j 4"
BB_NUMBER_THREADS = "4"

Change the PARALLEL_MAKE and BB_NUMBER_THREADS values to something that suits better if it chokes your machine.

  • I have some problem with the parallel building, mkfs.jffs failed to build the image because the directory was modify while the building of the fs. patrick.hetu 02:19, 27 May 2008 (UTC)
  • If you encounter an error related with the qemu-native package and not compiling for the qemu, you can edit the build/conf/local.conf file and add ENABLE_BINARY_LOCALE_GENERATION = "0" line to avoid the error.
  • To prevent building tons of locales, add a line like this to local.conf:
GLIBC_GENERATE_LOCALES = "en_US.UTF-8 nl_NL.UTF-8"
  • To not build any binary locales at all, add this to local.conf:
ENABLE_BINARY_LOCALE_GENERATION = "0"
  • If you want to rebuild the package indexes (for instance, after compiling a new version of a package) without building openmoko-devel-image, run make build-package-package-index.

User:Wurp will update this to be a little more comprehensible, but maybe it can help someone as-is in the meantime:

  • If MokoMakefile always fails on some fetch in zlib, just find the binary somewhere, add it to the downloads or sources directory manually (create the .md5 matching file if necessary), and retry.

Useful commands

Here is the list (not complete) of useful MokoMakefile commands (actually make targets) and a short description of each one. These should be run inside $OMDIR directory.

make openmoko-devel-image 
build the full development image
make openmoko-devel-tools 
build statically-linked dfu-util and openocd binaries
make openmoko-toolchain 
builds toolchain
make qemu 
builds qemu, downloads flash images from official repository, flashes qemu emulated Neo1973 and runs emulator (see also Openmoko under QEMU).
make qemu-local 
same as make qemu, but uses locally built images instead of official ones.
make run-qemu 
runs qemu with usb keyboard (note: qemu must first be built!). This target starts the emulator with some predefined set of options. If you need to start it with other options (enable telnet, etc), see QEMU_command_line.
make build-package-<package name> 
buids <package name> package
make update-makefile 
updates MokoMakefile
make clean-package-<foo>
cleans the "<foo>" package
make setup 
to make sure that any recent changes to the build directory structure have been applied
make update 
to update the Openmoko repository checkout and the MokoMakefile patches to the latest version

Developing with MokoMakefile

NOTE: If using MokoMakefile with OM2007.2 then references to $OMDIR/openmoko should be replaced with $OMDIR/openembedded. Also references to tmp/work/armv4t-linux should be replaced with tmp/work/fic-gta01-angstrom-linux-gnueabi


For the following explanations $OMDIR is the directory where there Makefile puts all the stuff.

To make in-tree changes and have them built and used by qemu:

 cd $OMDIR/openmoko
 quilt new descriptive-patch-name.patch
 quilt add trunk/src/name-of-file-to-change # do this for every file you are about to modify
 ...make the changes...
 quilt refresh # this creates a file in $OMDIR/patches/openmoko-HEAD/ and updates the quilt series file there

Note: Do NOT use absolute paths as this confuses quilt and will get you a diff of the file against /dev/null!

To build the changes and have them used by qemu:

 make build-qemu
 make flash-qemu-local
 make run-qemu

If you want to modify applications instead of the openmoko toolchain, this is what you have to do (example: openmoko-messages):

 cd $OMDIR/build
 . ../setup-env
 bitbake -c unpack openmoko-messages
 cd tmp/work/armv4t-linux/openmoko-messages-0.0.1+svnnow-r2_2276/openmoko-messages/
 ...make the changes...
 cd -
 bitbake openmoko-messages

Then continue with MokoMakefile usage.

If you want to add an application to your openmoko distribution, do this: All file edits should be done using quilt as described above. That way a patch can easily be submitted to the openmoko project. First, create a directory that will correspond to your package and edit a .bb file in there:

 cd $OMDIR/openmoko/
 quilt new mycoolpackage.patch
 mkdir trunk/openembedded/packages/mycoolpackage
 quilt add trunk/openembedded/packages/mycoolpackage/mycoolpackage_1.bb
 quilt edit trunk/openembedded/packages/mycoolpackage/mycoolpackage_1.bb

The file should have the following content:

 DESCRIPTION = "This is a cool package"
 SECTION = "username/mycoolpackage"
 PV = "1"
 
 inherit autotools
 
 SRC_URI = "http://www.example.com/download/mycoolpackage-1.tar.gz"

Explanation:

  • DESCRIPTION - Just a short text explaining the package
  • SECTION - I have no clue, but I'll use username/mycoolpackage for now
  • PV - Package Version
  • inherit autotools - The package can be compiled by './configure && make && make install' so we tell MokoMakefile to do it this way.
  • SRC_URI = ... - This is the download location of the package source. It's imperative that the tar.gz contains a directory called packagename-packageversion (in this case: mycoolpackage-1) so that MokoMakefile can find it automatically or the build will fail.

This is not all. We also need to tell MokoMakfile that it needs to build and include the package in the image. To do this, do

 $OMDIR/openmoko# quilt edit trunk/openembedded/packages/tasks/task-openmoko.bb

Here, increase the value PR by one and add mycoolpackage \ (with the backslash!) just before the line reading # update-alternatives \.

Now run

 quilt refresh
 cd ..
 make update openmoko-devel-image

And if everything's alright you should now have an OpenMoko image to flash to your phone or run in qemu as described above.

Hello World application

There is a Hello World! tutorial available too.

Testimonials

MokoMakefile is recommended by 4 out of 4 new developers on #openmoko, with testimonials such as "For some reason last night I couldn't get my manual install of everything to work (bb complained about my bbpath I think) ... but with your makefile, it works great!", "MokoMakefile rocks!", "Wow this build system is nice - it just seems more polished than my gumstix toolchain buildroot system", and "make openmoko-devel-image :) - no magic there".

Project page: http://mokomakefile.projects.openmoko.org/