Pandora Wiki - User contributions [en]

Kernel build instructions

2009-03-22T22:13:32Z

Ishani: grouping

Note: these instructions are written for Linux users, notes are being added for those building in Windows using cygwin.

== Preparation ==
First you need a toolchain and several other tools.

===Cygwin (Windows Users)===
Cygwin is a Linux-like environment for Windows; download and install [http://www.cygwin.com/ here]. You will need additional packages installed to build the kernel:

* diffutils
* gcc4
* make
* ncurses
* libncurses-devel
* git (see below)

===CodeSourcery G++===
Usually [http://www.codesourcery.com/gnu_toolchains/arm/portal/subscription?@template=lite CodeSourcery's ARM GNU/Linux tool chain] is used to build OMAP3 kernels, but other variations can be used as well. For CodeSourcery, 2007q3 version is recommended (click "all versions" in above page, as 2008q1 and 2008q3 produce bad code in some situations. See [http://elinux.org/BeagleBoard#Compiler BeagleBoard page] for more information.

'''Windows Users:'''
When installing on Windows, '''do not use the default install path''', as it contains spaces and will cause problems when building (when the build system uses -print-file-name=include). Install to
<source lang="text">
C:\SourceryG++\
</source>
or similar. As mentioned [https://support.codesourcery.com/GNUToolchain/kbentry46 here], create an environment variable called CYGPATH with the value 'cygpath' (minus the quotes). Patching your install using the [https://support.codesourcery.com/GNUToolchain/kbentry21 SourceryG++ guide to kernel building] as a reference is necessary to get your cygwin/windows builds off the ground.

===Git===
For source control access, you need to have [http://git.or.cz/ git] installed. Use your packet manager or build it from source. On Windows, install via cygwin.

A guide for [http://linux.yyz.us/git-howto.html basic git usage].

===mkimage===
Finally you need to have 'mkimage' tool in PATH, which can be built as part of u-boot build process, or download below:
* [http://notaz.gp2x.de/misc/pnd/mkimage mkimage - linux version]
* [http://www.psyent.com/download/u-boot-mkimage-bin.zip mkimage - windows version]

 

== Cloning and switching branches ==
Now you need to 'clone' kernel source using git tools from previous step. Make a directory you want to keep source in and cd into it. Then run:
<source lang="text">
git clone git://openpandora.org/pandora-kernel.git
</source>
This will now download the source from openpandora.org. Note that it will take a while, so be patient.
When done, you will have default 'master' branch checked out, but it doesn't have the latest files, so you need to checkout the current 'pandora-27-omap1' branch:
<source lang="text">
git checkout --track -b pandora-27-omap1 origin/pandora-27-omap1
</source>

== Building ==
To build you need to have several environment variables set. If you don't have your toolchain in PATH, you need to add it there:
<source lang="text">
export PATH=$PATH:/path/to/arm-2007q3/bin
</source>
You also need to have CROSS_COMPILE set:
<source lang="text">
export CROSS_COMPILE=arm-none-linux-gnueabi-
</source>

Now set up the default .config file:
<source lang="text">
make omap3_pandora_defconfig
</source>
If you want to customize kernel features, run
<source lang="text">
make menuconfig
</source>
When finished, just run
<source lang="text">
make
</source>
and it should build you uImage and place it in arch/arm/boot/ . You can now use it to boot from SD (recommended) or replace the one in your flash.

[[Category:Development]]

Kernel build instructions

2009-03-22T22:11:24Z

Ishani: spacing

Note: these instructions are written for Linux users, notes are being added for those building in Windows using cygwin.

== Preparation ==
First you need a toolchain and several other tools.

===Cygwin (Windows Users)===
Cygwin is a Linux-like environment for Windows; download and install [http://www.cygwin.com/ here]. You will need additional packages installed to build the kernel:

* diffutils
* gcc4
* make
* ncurses
* libncurses-devel
* git (see below)

===CodeSourcery G++===
Usually [http://www.codesourcery.com/gnu_toolchains/arm/portal/subscription?@template=lite CodeSourcery's ARM GNU/Linux tool chain] is used to build OMAP3 kernels, but other variations can be used as well. For CodeSourcery, 2007q3 version is recommended (click "all versions" in above page, as 2008q1 and 2008q3 produce bad code in some situations. See [http://elinux.org/BeagleBoard#Compiler BeagleBoard page] for more information.

'''Windows Users:'''
When installing on Windows, '''do not use the default install path''', as it contains spaces and will cause problems when building (when the build system uses -print-file-name=include). Install to
<source lang="text">
C:\SourceryG++\
</source>
or similar.

As mentioned [https://support.codesourcery.com/GNUToolchain/kbentry46 here], create an environment variable called CYGPATH with the value 'cygpath' (minus the quotes).

Patching your install using the [https://support.codesourcery.com/GNUToolchain/kbentry21 SourceryG++ guide to kernel building] as a reference is necessary to get your cygwin/windows builds off the ground.

===Git===
For source control access, you need to have [http://git.or.cz/ git] installed. Use your packet manager or build it from source. On Windows, install via cygwin.

A guide for [http://linux.yyz.us/git-howto.html basic git usage].

===mkimage===
Finally you need to have 'mkimage' tool in PATH, which can be built as part of u-boot build process, or download below:
* [http://notaz.gp2x.de/misc/pnd/mkimage mkimage - linux version]
* [http://www.psyent.com/download/u-boot-mkimage-bin.zip mkimage - windows version]

 

== Cloning and switching branches ==
Now you need to 'clone' kernel source using git tools from previous step. Make a directory you want to keep source in and cd into it. Then run:
<source lang="text">
git clone git://openpandora.org/pandora-kernel.git
</source>
This will now download the source from openpandora.org. Note that it will take a while, so be patient.
When done, you will have default 'master' branch checked out, but it doesn't have the latest files, so you need to checkout the current 'pandora-27-omap1' branch:
<source lang="text">
git checkout --track -b pandora-27-omap1 origin/pandora-27-omap1
</source>

== Building ==
To build you need to have several environment variables set. If you don't have your toolchain in PATH, you need to add it there:
<source lang="text">
export PATH=$PATH:/path/to/arm-2007q3/bin
</source>
You also need to have CROSS_COMPILE set:
<source lang="text">
export CROSS_COMPILE=arm-none-linux-gnueabi-
</source>

Now set up the default .config file:
<source lang="text">
make omap3_pandora_defconfig
</source>
If you want to customize kernel features, run
<source lang="text">
make menuconfig
</source>
When finished, just run
<source lang="text">
make
</source>
and it should build you uImage and place it in arch/arm/boot/ . You can now use it to boot from SD (recommended) or replace the one in your flash.

[[Category:Development]]

Kernel build instructions

2009-03-22T22:10:55Z

Ishani: link other G++ guide

Note: these instructions are written for Linux users, notes are being added for those building in Windows using cygwin.

== Preparation ==
First you need a toolchain and several other tools.

===Cygwin (Windows Users)===
Cygwin is a Linux-like environment for Windows; download and install [http://www.cygwin.com/ here]. You will need additional packages installed to build the kernel:

* diffutils
* gcc4
* make
* ncurses
* libncurses-devel
* git (see below)

===CodeSourcery G++===
Usually [http://www.codesourcery.com/gnu_toolchains/arm/portal/subscription?@template=lite CodeSourcery's ARM GNU/Linux tool chain] is used to build OMAP3 kernels, but other variations can be used as well. For CodeSourcery, 2007q3 version is recommended (click "all versions" in above page, as 2008q1 and 2008q3 produce bad code in some situations. See [http://elinux.org/BeagleBoard#Compiler BeagleBoard page] for more information.

'''Windows Users:'''
When installing on Windows, '''do not use the default install path''', as it contains spaces and will cause problems when building (when the build system uses -print-file-name=include). Install to
<source lang="text">
C:\SourceryG++\
</source>
or similar.

As mentioned [https://support.codesourcery.com/GNUToolchain/kbentry46 here], create an environment variable called CYGPATH with the value 'cygpath' (minus the quotes).

Patching your install using the [https://support.codesourcery.com/GNUToolchain/kbentry21 SourceryG++ guide to kernel building] as a reference is necessary to get your cygwin/windows builds off the ground.

===Git===
For source control access, you need to have [http://git.or.cz/ git] installed. Use your packet manager or build it from source. On Windows, install via cygwin.

A guide for [http://linux.yyz.us/git-howto.html basic git usage].

===mkimage===
Finally you need to have 'mkimage' tool in PATH, which can be built as part of u-boot build process, or download below:
* [http://notaz.gp2x.de/misc/pnd/mkimage mkimage - linux version]
* [http://www.psyent.com/download/u-boot-mkimage-bin.zip mkimage - windows version]

 

== Cloning and switching branches ==
Now you need to 'clone' kernel source using git tools from previous step. Make a directory you want to keep source in and cd into it. Then run:
<source lang="text">
git clone git://openpandora.org/pandora-kernel.git
</source>
This will now download the source from openpandora.org. Note that it will take a while, so be patient.
When done, you will have default 'master' branch checked out, but it doesn't have the latest files, so you need to checkout the current 'pandora-27-omap1' branch:
<source lang="text">
git checkout --track -b pandora-27-omap1 origin/pandora-27-omap1
</source>

== Building ==
To build you need to have several environment variables set. If you don't have your toolchain in PATH, you need to add it there:
<source lang="text">
export PATH=$PATH:/path/to/arm-2007q3/bin
</source>
You also need to have CROSS_COMPILE set:
<source lang="text">
export CROSS_COMPILE=arm-none-linux-gnueabi-
</source>

Now set up the default .config file:
<source lang="text">
make omap3_pandora_defconfig
</source>
If you want to customize kernel features, run
<source lang="text">
make menuconfig
</source>
When finished, just run
<source lang="text">
make
</source>
and it should build you uImage and place it in arch/arm/boot/ . You can now use it to boot from SD (recommended) or replace the one in your flash.

[[Category:Development]]

Kernel build instructions

2009-03-22T22:09:10Z

Ishani: -print-file-name=include doc

Note: these instructions are written for Linux users, notes are being added for those building in Windows using cygwin.

== Preparation ==
First you need a toolchain and several other tools.

===Cygwin (Windows Users)===
Cygwin is a Linux-like environment for Windows; download and install [http://www.cygwin.com/ here]. You will need additional packages installed to build the kernel:

* diffutils
* gcc4
* make
* ncurses
* libncurses-devel
* git (see below)

===CodeSourcery G++===
Usually [http://www.codesourcery.com/gnu_toolchains/arm/portal/subscription?@template=lite CodeSourcery's ARM GNU/Linux tool chain] is used to build OMAP3 kernels, but other variations can be used as well. For CodeSourcery, 2007q3 version is recommended (click "all versions" in above page, as 2008q1 and 2008q3 produce bad code in some situations. See [http://elinux.org/BeagleBoard#Compiler BeagleBoard page] for more information.

'''Windows Users:'''
When installing on Windows, '''do not use the default install path''', as it contains spaces and will cause problems when building (when the build system uses -print-file-name=include). Install to
<source lang="text">
C:\SourceryG++\
</source>
or similar.

As mentioned [https://support.codesourcery.com/GNUToolchain/kbentry46 here], create an environment variable called CYGPATH with the value 'cygpath' (minus the quotes).

===Git===
For source control access, you need to have [http://git.or.cz/ git] installed. Use your packet manager or build it from source. On Windows, install via cygwin.

A guide for [http://linux.yyz.us/git-howto.html basic git usage].

===mkimage===
Finally you need to have 'mkimage' tool in PATH, which can be built as part of u-boot build process, or download below:
* [http://notaz.gp2x.de/misc/pnd/mkimage mkimage - linux version]
* [http://www.psyent.com/download/u-boot-mkimage-bin.zip mkimage - windows version]

 

== Cloning and switching branches ==
Now you need to 'clone' kernel source using git tools from previous step. Make a directory you want to keep source in and cd into it. Then run:
<source lang="text">
git clone git://openpandora.org/pandora-kernel.git
</source>
This will now download the source from openpandora.org. Note that it will take a while, so be patient.
When done, you will have default 'master' branch checked out, but it doesn't have the latest files, so you need to checkout the current 'pandora-27-omap1' branch:
<source lang="text">
git checkout --track -b pandora-27-omap1 origin/pandora-27-omap1
</source>

== Building ==
To build you need to have several environment variables set. If you don't have your toolchain in PATH, you need to add it there:
<source lang="text">
export PATH=$PATH:/path/to/arm-2007q3/bin
</source>
You also need to have CROSS_COMPILE set:
<source lang="text">
export CROSS_COMPILE=arm-none-linux-gnueabi-
</source>

Now set up the default .config file:
<source lang="text">
make omap3_pandora_defconfig
</source>
If you want to customize kernel features, run
<source lang="text">
make menuconfig
</source>
When finished, just run
<source lang="text">
make
</source>
and it should build you uImage and place it in arch/arm/boot/ . You can now use it to boot from SD (recommended) or replace the one in your flash.

[[Category:Development]]

Kernel build instructions

2009-03-22T20:46:30Z

Ishani: /* CodeSourcery G++ */

Note: these instructions are written for Linux users, notes are being added for those building in Windows using cygwin.

== Preparation ==
First you need a toolchain and several other tools.

===Cygwin (Windows Users)===
Cygwin is a Linux-like environment for Windows; download and install [http://www.cygwin.com/ here]. You will need additional packages installed to build the kernel:

* diffutils
* gcc4
* make
* ncurses
* libncurses-devel
* git (see below)

===CodeSourcery G++===
Usually [http://www.codesourcery.com/gnu_toolchains/arm/portal/subscription?@template=lite CodeSourcery's ARM GNU/Linux tool chain] is used to build OMAP3 kernels, but other variations can be used as well. For CodeSourcery, 2007q3 version is recommended (click "all versions" in above page, as 2008q1 and 2008q3 produce bad code in some situations. See [http://elinux.org/BeagleBoard#Compiler BeagleBoard page] for more information.

'''Windows Users:'''
When installing on Windows, '''do not use the default install path''', as it contains spaces and will cause problems when building. Install to
<source lang="text">
C:\SourceryG++\
</source>
or similar.

As mentioned [https://support.codesourcery.com/GNUToolchain/kbentry46 here], create an environment variable called CYGPATH with the value 'cygpath' (minus the quotes).

===Git===
For source control access, you need to have [http://git.or.cz/ git] installed. Use your packet manager or build it from source. On Windows, install via cygwin.

A guide for [http://linux.yyz.us/git-howto.html basic git usage].

===mkimage===
Finally you need to have 'mkimage' tool in PATH, which can be built as part of u-boot build process, or download below:
* [http://notaz.gp2x.de/misc/pnd/mkimage mkimage - linux version]
* [http://www.psyent.com/download/u-boot-mkimage-bin.zip mkimage - windows version]

 

== Cloning and switching branches ==
Now you need to 'clone' kernel source using git tools from previous step. Make a directory you want to keep source in and cd into it. Then run:
<source lang="text">
git clone git://openpandora.org/pandora-kernel.git
</source>
This will now download the source from openpandora.org. Note that it will take a while, so be patient.
When done, you will have default 'master' branch checked out, but it doesn't have the latest files, so you need to checkout the current 'pandora-27-omap1' branch:
<source lang="text">
git checkout --track -b pandora-27-omap1 origin/pandora-27-omap1
</source>

== Building ==
To build you need to have several environment variables set. If you don't have your toolchain in PATH, you need to add it there:
<source lang="text">
export PATH=$PATH:/path/to/arm-2007q3/bin
</source>
You also need to have CROSS_COMPILE set:
<source lang="text">
export CROSS_COMPILE=arm-none-linux-gnueabi-
</source>

Now set up the default .config file:
<source lang="text">
make omap3_pandora_defconfig
</source>
If you want to customize kernel features, run
<source lang="text">
make menuconfig
</source>
When finished, just run
<source lang="text">
make
</source>
and it should build you uImage and place it in arch/arm/boot/ . You can now use it to boot from SD (recommended) or replace the one in your flash.

[[Category:Development]]

Kernel build instructions

2009-03-20T11:32:41Z

Ishani:

Note: these instructions are written for Linux users, notes are being added for those building in Windows using cygwin.

== Preparation ==
First you need a toolchain and several other tools.

===Cygwin (Windows Users)===
Cygwin is a Linux-like environment for Windows; download and install [http://www.cygwin.com/ here]. You will need additional packages installed to build the kernel:

* diffutils
* gcc4
* make
* ncurses
* libncurses-devel
* git (see below)

===CodeSourcery G++===
Usually [http://www.codesourcery.com/gnu_toolchains/arm/portal/subscription?@template=lite CodeSourcery's ARM GNU/Linux tool chain] is used to build OMAP3 kernels, but other variations can be used as well. For CodeSourcery, 2007q3 version is recommended (click "all versions" in above page, as 2008q1 and 2008q3 produce bad code in some situations. See [http://elinux.org/BeagleBoard#Compiler BeagleBoard page] for more information.

'''Windows Users:'''
When installing on Windows, '''do not use the default install path''', as it contains spaces and will cause problems when building. Install to
<source lang="text">
C:\SourceryG++\
</source>
or similar.

Some tips on cross-compiling in cygwin using SourceryG++ under Windows [https://support.codesourcery.com/GNUToolchain/kbentry21 here] and [https://support.codesourcery.com/GNUToolchain/kbentry46 here].

===Git===
For source control access, you need to have [http://git.or.cz/ git] installed. Use your packet manager or build it from source. On Windows, install via cygwin.

A guide for [http://linux.yyz.us/git-howto.html basic git usage].

===mkimage===
Finally you need to have 'mkimage' tool in PATH, which can be built as part of u-boot build process, or download below:
* [http://notaz.gp2x.de/misc/pnd/mkimage mkimage - linux version]
* [http://www.psyent.com/download/u-boot-mkimage-bin.zip mkimage - windows version]

 

== Cloning and switching branches ==
Now you need to 'clone' kernel source using git tools from previous step. Make a directory you want to keep source in and cd into it. Then run:
<source lang="text">
git clone git://openpandora.org/pandora-kernel.git
</source>
This will now download the source from openpandora.org. Note that it will take a while, so be patient.
When done, you will have default 'master' branch checked out, but it doesn't have the latest files, so you need to checkout the current 'pandora-27-omap1' branch:
<source lang="text">
git checkout --track -b pandora-27-omap1 origin/pandora-27-omap1
</source>

== Building ==
To build you need to have several environment variables set. If you don't have your toolchain in PATH, you need to add it there:
<source lang="text">
export PATH=$PATH:/path/to/arm-2007q3/bin
</source>
You also need to have CROSS_COMPILE set:
<source lang="text">
export CROSS_COMPILE=arm-none-linux-gnueabi-
</source>

Now set up the default .config file:
<source lang="text">
make omap3_pandora_defconfig
</source>
If you want to customize kernel features, run
<source lang="text">
make menuconfig
</source>
When finished, just run
<source lang="text">
make
</source>
and it should build you uImage and place it in arch/arm/boot/ . You can now use it to boot from SD (recommended) or replace the one in your flash.

[[Category:Development]]

Kernel build instructions

2009-03-20T11:31:54Z

Ishani: more notes for windows users

Note: these instructions are written for Linux users, notes are being added for those building in Windows using cygwin.

== Preparation ==
First you need a toolchain and several other tools.

===Cygwin (Windows Users)===
Cygwin is a Linux-like environment for Windows; download and install [http://www.cygwin.com/ here]. You will need additional packages installed to build the kernel:

* diffutils
* gcc4
* make
* ncurses
* libncurses-devel
* git (see below)

===CodeSourcery G++===
Usually [http://www.codesourcery.com/gnu_toolchains/arm/portal/subscription?@template=lite CodeSourcery's ARM GNU/Linux tool chain] is used to build OMAP3 kernels, but other variations can be used as well. For CodeSourcery, 2007q3 version is recommended (click "all versions" in above page, as 2008q1 and 2008q3 produce bad code in some situations. See [http://elinux.org/BeagleBoard#Compiler BeagleBoard page] for more information.

'''Windows Users:'''
When installing on Windows, '''do not use the default install path''', as it contains spaces and will cause problems when building. Install to
<source lang="text">
C:\SourceryG++\
</source>
or similar.

Some tips on cross-compiling in cygwin using SourceryG++ under Windows [https://support.codesourcery.com/GNUToolchain/kbentry21 here] and [https://support.codesourcery.com/GNUToolchain/kbentry46 here].

===Git===
For source control access, you need to have [http://git.or.cz/ git] installed. Use your packet manager or build it from source. On Windows, install via cygwin.

A guide for [http://linux.yyz.us/git-howto.html basic git usage].

===mkimage===
Finally you need to have 'mkimage' tool in PATH, which can be built as part of u-boot build process, or download below:
* [http://notaz.gp2x.de/misc/pnd/mkimage mkimage - linux version]
* [http://www.psyent.com/download/u-boot-mkimage-bin.zip mkimage - windows version]

 

== Cloning and switching branches ==
Now you need to 'clone' kernel source using git tools from previous step. Make a directory you want to keep source in and cd into it. Then run:
<source lang="text">
git clone git://openpandora.org/pandora-kernel.git
</source>
This will now download the source from openpandora.org. Note that it will take a while, so be patient.
When done, you will have default 'master' branch checked out, but it doesn't have the latest files, so you need to checkout the current 'pandora-27-omap1' branch:
<source lang="text">
git checkout --track -b pandora-27-omap1 origin/pandora-27-omap1
</source>

== Building ==
To build you need to have several environment variables set. If you don't have your toolchain in PATH, you need to add it there:
<source lang="text">
export PATH=$PATH:/path/to/arm-2007q3/bin
</source>
You also need to have CROSS_COMPILE set:
<source lang="text">
export CROSS_COMPILE=arm-none-linux-gnueabi-
</source>

Now set up the default .config file:
<source lang="text">
make omap3_pandora_defconfig
</source>
If you want to customize kernel features, run
<source lang="text">
make menuconfig
</source>
When finished, just run
<source lang="text">
make
</source>
and it should build you uImage and place it in arch/arm/boot/ . You can now use it to boot from SD (recommended) or replace the one in your flash.

[[Category:Development]]

Kernel build instructions

2009-03-20T02:02:25Z

Ishani: /* Git */

Note: these instructions are written for Linux users, notes are being added for those building in Windows using cygwin.

== Preparation ==
First you need a toolchain and several other tools.

===CodeSourcery===
Usually [http://www.codesourcery.com/gnu_toolchains/arm/portal/subscription?@template=lite CodeSourcery's ARM GNU/Linux tool chain] is used to build OMAP3 kernels, but other variations can be used as well. For CodeSourcery, 2007q3 version is recommended (click "all versions" in above page, as 2008q1 and 2008q3 produce bad code in some situations. See [http://elinux.org/BeagleBoard#Compiler BeagleBoard page] for more information.

Note: When installing on Windows, '''do not use the default install path''', as it contains spaces and will cause problems when building. Install to
<source lang="text">
C:\SourceryG++\
</source>
or similar.

===Git===
For source control access, you need to have [http://git.or.cz/ git] installed. Use your packet manager or build it from source. On Windows, install via cygwin.

A guide for [http://linux.yyz.us/git-howto.html basic git usage].

===mkimage===
Finally you need to have 'mkimage' tool in PATH, which can be built as part of u-boot build process, or download below:
* [http://notaz.gp2x.de/misc/pnd/mkimage mkimage - linux version]
* [http://www.psyent.com/download/u-boot-mkimage-bin.zip mkimage - windows version]

 

== Cloning and switching branches ==
Now you need to 'clone' kernel source using git tools from previous step. Make a directory you want to keep source in and cd into it. Then run:
<source lang="text">
git clone git://openpandora.org/pandora-kernel.git
</source>
This will now download the source from openpandora.org. Note that it will take a while, so be patient.
When done, you will have default 'master' branch checked out, but it doesn't have the latest files, so you need to checkout the current 'pandora-27-omap1' branch:
<source lang="text">
git checkout --track -b pandora-27-omap1 origin/pandora-27-omap1
</source>

== Building ==
To build you need to have several environment variables set. If you don't have your toolchain in PATH, you need to add it there:
<source lang="text">
export PATH=$PATH:/path/to/arm-2007q3/bin
</source>
You also need to have CROSS_COMPILE set:
<source lang="text">
export CROSS_COMPILE=arm-none-linux-gnueabi-
</source>

Now set up the default .config file:
<source lang="text">
make omap3_pandora_defconfig
</source>
If you want to customize kernel features, run
<source lang="text">
make menuconfig
</source>
When finished, just run
<source lang="text">
make
</source>
and it should build you uImage and place it in arch/arm/boot/ . You can now use it to boot from SD (recommended) or replace the one in your flash.

[[Category:Development]]

Kernel build instructions

2009-03-20T01:57:54Z

Ishani:

Note: these instructions are written for Linux users, notes are being added for those building in Windows using cygwin.

== Preparation ==
First you need a toolchain and several other tools.

===CodeSourcery===
Usually [http://www.codesourcery.com/gnu_toolchains/arm/portal/subscription?@template=lite CodeSourcery's ARM GNU/Linux tool chain] is used to build OMAP3 kernels, but other variations can be used as well. For CodeSourcery, 2007q3 version is recommended (click "all versions" in above page, as 2008q1 and 2008q3 produce bad code in some situations. See [http://elinux.org/BeagleBoard#Compiler BeagleBoard page] for more information.

Note: When installing on Windows, '''do not use the default install path''', as it contains spaces and will cause problems when building. Install to
<source lang="text">
C:\SourceryG++\
</source>
or similar.

===Git===
For source control access, you need to have [http://git.or.cz/ git] installed. Use your packet manager or build it from source. On Windows, install via cygwin.

===mkimage===
Finally you need to have 'mkimage' tool in PATH, which can be built as part of u-boot build process, or download below:
* [http://notaz.gp2x.de/misc/pnd/mkimage mkimage - linux version]
* [http://www.psyent.com/download/u-boot-mkimage-bin.zip mkimage - windows version]

 

== Cloning and switching branches ==
Now you need to 'clone' kernel source using git tools from previous step. Make a directory you want to keep source in and cd into it. Then run:
<source lang="text">
git clone git://openpandora.org/pandora-kernel.git
</source>
This will now download the source from openpandora.org. Note that it will take a while, so be patient.
When done, you will have default 'master' branch checked out, but it doesn't have the latest files, so you need to checkout the current 'pandora-27-omap1' branch:
<source lang="text">
git checkout --track -b pandora-27-omap1 origin/pandora-27-omap1
</source>

== Building ==
To build you need to have several environment variables set. If you don't have your toolchain in PATH, you need to add it there:
<source lang="text">
export PATH=$PATH:/path/to/arm-2007q3/bin
</source>
You also need to have CROSS_COMPILE set:
<source lang="text">
export CROSS_COMPILE=arm-none-linux-gnueabi-
</source>

Now set up the default .config file:
<source lang="text">
make omap3_pandora_defconfig
</source>
If you want to customize kernel features, run
<source lang="text">
make menuconfig
</source>
When finished, just run
<source lang="text">
make
</source>
and it should build you uImage and place it in arch/arm/boot/ . You can now use it to boot from SD (recommended) or replace the one in your flash.

[[Category:Development]]

Kernel build instructions

2009-03-19T23:45:21Z

Ishani:

Note: these instructions are written for Linux users, but may work under windows with cygwin.

== Preparation ==
First you need a toolchain and several other tools. Usually [http://www.codesourcery.com/gnu_toolchains/arm/portal/subscription?@template=lite CodeSourcery's ARM GNU/Linux tool chain] is used to build OMAP3 kernels, but other variations can be used as well. For CodeSourcery, 2007q3 version is recommended (click "all versions" in above page, as 2008q1 and 2008q3 produce bad code in some situations. See [http://elinux.org/BeagleBoard#Compiler BeagleBoard page] for more information.
Next you need to have [http://git.or.cz/ git] installed, so use your packet manager or build it from source.

Finally you need to have 'mkimage' tool in PATH, which can be built as part of u-boot build process, or download below:
* [http://notaz.gp2x.de/misc/pnd/mkimage mkimage - linux version]
* [http://www.psyent.com/download/u-boot-mkimage-bin.zip mkimage - windows version]

== Cloning and switching branches ==
Now you need to 'clone' kernel source using git tools from previous step. Make a directory you want to keep source in and cd into it. Then run:
<source lang="text">
git clone git://openpandora.org/pandora-kernel.git
</source>
This will now download the source from openpandora.org. Note that it will take a while, so be patient.
When done, you will have default 'master' branch checked out, but it doesn't have the latest files, so you need to checkout the current 'pandora-27-omap1' branch:
<source lang="text">
git checkout --track -b pandora-27-omap1 origin/pandora-27-omap1
</source>

== Building ==
To build you need to have several environment variables set. If you don't have your toolchain in PATH, you need to add it there:
<source lang="text">
export PATH=$PATH:/path/to/arm-2007q3/bin
</source>
You also need to have CROSS_COMPILE set:
<source lang="text">
export CROSS_COMPILE=arm-none-linux-gnueabi-
</source>

Now set up the default .config file:
<source lang="text">
make omap3_pandora_defconfig
</source>
If you want to customize kernel features, run
<source lang="text">
make menuconfig
</source>
When finished, just run
<source lang="text">
make
</source>
and it should build you uImage and place it in arch/arm/boot/ . You can now use it to boot from SD (recommended) or replace the one in your flash.

[[Category:Development]]