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 <a name="androidBuildNewTitle"></a><h1>Building Android for a new Mobile Device</h1>


 <a name="toc"/>
 <div style="padding:10px">
 <a href="#androidOHDPortingDeviceBuildingProcess">Detailed Instructions</a><br/>
 <a href="#androidBuildNewFileTree">New Product File Tree</a><br/></div></font></div>

 <a name="androidOHDPortingDeviceBuildingProcess"></a><h2>Detailed Instructions</h2>

 <p>The directions below describe how to configure make files for new mobile devices and products.</p>
 <ol>
   <li>Create a company directory in <code>//device/partner</code>.<br/>
   <pre class="prettyprint">
   mkdir device/partner/&lt;company_name&gt;</pre></li>
   <li>Create a <code>products</code> directory beneath the company directory you created in step 1.<BR>
   <pre class="prettyprint">
   mkdir device/partner/&lt;company_name&gt;/products/</pre></li>
   <li>Create a product-specific make file, called <code>device/partner/&lt;company_name&gt;/products/&lt;first_product_name&gt;.mk</code>, that includes the following code:<BR>
     <pre class="prettyprint">
   $(call inherit-product, target/product/generic.mk)
   #
   # Overrides
   PRODUCT_NAME := &lt;first_product_name&gt;
   PRODUCT_DEVICE := &lt;board_name&gt;</pre></li>
   <li>In the <code>products</code> directory, create an <code>AndroidProducts.mk</code> file that point to (and is responsible for finding) the individual product make files.<BR>
   <pre class="prettypring">
   #
   # This file should set PRODUCT_MAKEFILES to a list of product makefiles
   # to expose to the build system.  LOCAL_DIR will already be set to
   # the directory containing this file.
   #
   # This file may not rely on the value of any variable other than
   # LOCAL_DIR; do not use any conditionals, and do not look up the
   # value of any variable that isn't set in this file or in a file that
   # it includes.
   #

   PRODUCT_MAKEFILES := \
     $(LOCAL_DIR)/first_product_name.mk \</pre></li>
   <li>Create a board-specific directory beneath your company directory that matches the <code>PRODUCT_DEVICE</code> variable <code>&lt;board_name&gt;</code> referenced in the product-specific make file above. This will include a make file that gets accessed by any product using this board.<BR>
   <pre class="prettyprint">
   mkdir device/partner/&lt;company_name&gt;/&lt;board_name&gt;</pre></li>
     <li>Create a <code>product_config.mk</code> file in the directory created in the previous step (<code>device/partner/&lt;company_name&gt;/&lt;board_name&gt;</code>). If this directory does not include a <code>product_config.mk</code> file, the build will fail.<BR>
   <pre class="prettyprint">
   # These definitions override the defaults in config/config.make for &lt;board_name&gt;
   #
   # TARGET_NO_BOOTLOADER := false
   # TARGET_HARDWARE_3D := false
   #
   TARGET_USE_GENERIC_AUDIO := true</pre></li>
   <li>If you wish to modify system properties, create a <code>system.prop</code> file in your <code>&lt;board_name&gt;</code> directory(<code>device/partner/&lt;company_name&gt;/&lt;board_name&gt;</code>).<BR>
   <pre class="prettyprint">
   # system.prop for <board_name>
   # This overrides settings in the products/generic/system.prop file
   #
   # rild.libpath=/system/lib/libreference-ril.so
   # rild.libargs=-d /dev/ttyS0</pre></li>
   <li>Add a pointer to <code>&lt;second_product_name&gt;.mk</code> within <code>products/AndroidProducts.mk</code>.<BR>
   <pre class="prettypring">
   PRODUCT_MAKEFILES := \
     $(LOCAL_DIR)/first_product_name.mk \
     $(LOCAL_DIR)/second_product_name.mk</pre></li>
   <li><code>device/partner/&lt;company_name&gt;/&lt;board_name&gt;</code> must include an <code>Android.mk</code> file with at least the following code:<BR><BR>
   <pre class="prettyprint">
   # make file for new hardware <board_name> from <company_name>
   #
   LOCAL_PATH := $(call my-dir)
   #
   # this is here to use the pre-built kernel
   ifeq ($(TARGET_PREBUILT_KERNEL),)
   TARGET_PREBUILT_KERNEL := $(LOCAL_PATH)/kernel
   endif
   #
   file := $(INSTALLED_KERNEL_TARGET)
   ALL_PREBUILT += $(file)
   $(file): $(TARGET_PREBUILT_KERNEL) | $(ACP)
 		$(transform-prebuilt-to-target)
   #
   # no boot loader, so we don't need any of that stuff..
   #
   LOCAL_PATH := partner/&lt;company_name&gt;/&lt;board_name&gt;
   #
   include $(CLEAR_VARS)
   #
   # include more board specific stuff here? Such as Audio parameters.
   #</pre></li>
 <li>To create a second product for the same board, create a second product-specific make file called <code>device/partner/company_name/products/&lt;second_product_name&gt;.mk</code> that includes:<BR>
 <pre class="prettyprint">
   $(call inherit-product, partner/google/products/generic.mk)
   #
   # Overrides
   PRODUCT_NAME := &lt;second_product_name&gt;
   PRODUCT_DEVICE := &lt;board_name&gt;</pre></li>
 </ol>
 <p>By now, you should have two new products, called <code>&lt;first_product_name&gt;</code> and <code>&lt;second_product_name&gt;</code> associated with <code>&lt;company_name&gt;</code>. To verify that a product is properly configured (<code>&lt;first_product_name&gt;</code>, for example), execute the following:<BR>
 <pre class="prettyprint">
   cd device
   . ./envsetup.sh
   partner_setup &lt;first_product_name&gt;
   make PRODUCT-&lt;first_product_name&gt;-user
 </pre>
 <p>You should find new build binaries located in <code>device/out/target/product/&lt;board_name&gt;</code>.


 <a name="androidBuildNewFileTree"></a><h2>New Product File Tree</h2>

 <p>The file tree below illustrates what your own system should look like after completing the steps above.</p>
 <p>
 <ul>
   <li><code>&lt;company_name&gt;</code></li>
   <ul>
     <li><code>&lt;board_name&gt;</code></li>
     <ul>
       <li><code>Android.mk</code></li>
       <li><code>product_config.mk</code></li>
       <li><code>system.prop</code></li>
     </ul>
     <li><code>products</code></li>
     <ul>
       <li><code>AndroidProducts.mk</code></li>
       <li><code>&lt;first_product_name&gt;.mk</code></li>
       <li><code>&lt;second_product_name&gt;.mk</code></li>
     </ul>
   </ul>
 </ul>
 </p>


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	<a name="androidBuildNewTitle"></a><h1>Building Android for a new Mobile Device</h1>



	<a name="toc"/>
	<div style="padding:10px">
	<a href="#androidOHDPortingDeviceBuildingProcess">Detailed Instructions</a><br/>
	<a href="#androidBuildNewFileTree">New Product File Tree</a><br/></div></font></div>

	<a name="androidOHDPortingDeviceBuildingProcess"></a><h2>Detailed Instructions</h2>

	<p>The directions below describe how to configure make files for new mobile devices and products.</p>
	<ol>
	<li>Create a company directory in <code>//device/partner</code>.<br/>
	<pre class="prettyprint">
	mkdir device/partner/<company_name></pre></li>
	<li>Create a <code>products</code> directory beneath the company directory you created in step 1.<BR>
	<pre class="prettyprint">
	mkdir device/partner/<company_name>/products/</pre></li>
	<li>Create a product-specific make file, called <code>device/partner/<company_name>/products/<first_product_name>.mk</code>, that includes the following code:<BR>
	<pre class="prettyprint">
	$(call inherit-product, target/product/generic.mk)
	#
	# Overrides
	PRODUCT_NAME := <first_product_name>
	PRODUCT_DEVICE := <board_name></pre></li>
	<li>In the <code>products</code> directory, create an <code>AndroidProducts.mk</code> file that point to (and is responsible for finding) the individual product make files.<BR>
	<pre class="prettypring">
	#
	# This file should set PRODUCT_MAKEFILES to a list of product makefiles
	# to expose to the build system. LOCAL_DIR will already be set to
	# the directory containing this file.
	#
	# This file may not rely on the value of any variable other than
	# LOCAL_DIR; do not use any conditionals, and do not look up the
	# value of any variable that isn't set in this file or in a file that
	# it includes.
	#

	PRODUCT_MAKEFILES := \
	$(LOCAL_DIR)/first_product_name.mk \</pre></li>
	<li>Create a board-specific directory beneath your company directory that matches the <code>PRODUCT_DEVICE</code> variable <code><board_name></code> referenced in the product-specific make file above. This will include a make file that gets accessed by any product using this board.<BR>
	<pre class="prettyprint">
	mkdir device/partner/<company_name>/<board_name></pre></li>
	<li>Create a <code>product_config.mk</code> file in the directory created in the previous step (<code>device/partner/<company_name>/<board_name></code>). If this directory does not include a <code>product_config.mk</code> file, the build will fail.<BR>
	<pre class="prettyprint">
	# These definitions override the defaults in config/config.make for <board_name>
	#
	# TARGET_NO_BOOTLOADER := false
	# TARGET_HARDWARE_3D := false
	#
	TARGET_USE_GENERIC_AUDIO := true</pre></li>
	<li>If you wish to modify system properties, create a <code>system.prop</code> file in your <code><board_name></code> directory(<code>device/partner/<company_name>/<board_name></code>).<BR>
	<pre class="prettyprint">
	# system.prop for <board_name>
	# This overrides settings in the products/generic/system.prop file
	#
	# rild.libpath=/system/lib/libreference-ril.so
	# rild.libargs=-d /dev/ttyS0</pre></li>
	<li>Add a pointer to <code><second_product_name>.mk</code> within <code>products/AndroidProducts.mk</code>.<BR>
	<pre class="prettypring">
	PRODUCT_MAKEFILES := \
	$(LOCAL_DIR)/first_product_name.mk \
	$(LOCAL_DIR)/second_product_name.mk</pre></li>
	<li><code>device/partner/<company_name>/<board_name></code> must include an <code>Android.mk</code> file with at least the following code:<BR><BR>
	<pre class="prettyprint">
	# make file for new hardware <board_name> from <company_name>
	#
	LOCAL_PATH := $(call my-dir)
	#
	# this is here to use the pre-built kernel
	ifeq ($(TARGET_PREBUILT_KERNEL),)
	TARGET_PREBUILT_KERNEL := $(LOCAL_PATH)/kernel
	endif
	#
	file := $(INSTALLED_KERNEL_TARGET)
	ALL_PREBUILT += $(file)
	$(file): $(TARGET_PREBUILT_KERNEL) \| $(ACP)
	$(transform-prebuilt-to-target)
	#
	# no boot loader, so we don't need any of that stuff..
	#
	LOCAL_PATH := partner/<company_name>/<board_name>
	#
	include $(CLEAR_VARS)
	#
	# include more board specific stuff here? Such as Audio parameters.
	#</pre></li>
	<li>To create a second product for the same board, create a second product-specific make file called <code>device/partner/company_name/products/<second_product_name>.mk</code> that includes:<BR>
	<pre class="prettyprint">
	$(call inherit-product, partner/google/products/generic.mk)
	#
	# Overrides
	PRODUCT_NAME := <second_product_name>
	PRODUCT_DEVICE := <board_name></pre></li>
	</ol>
	<p>By now, you should have two new products, called <code><first_product_name></code> and <code><second_product_name></code> associated with <code><company_name></code>. To verify that a product is properly configured (<code><first_product_name></code>, for example), execute the following:<BR>
	<pre class="prettyprint">
	cd device
	. ./envsetup.sh
	partner_setup <first_product_name>
	make PRODUCT-<first_product_name>-user
	</pre>
	<p>You should find new build binaries located in <code>device/out/target/product/<board_name></code>.


	<a name="androidBuildNewFileTree"></a><h2>New Product File Tree</h2>

	<p>The file tree below illustrates what your own system should look like after completing the steps above.</p>
	<p>
	<ul>
	<li><code><company_name></code></li>
	<ul>
	<li><code><board_name></code></li>
	<ul>
	<li><code>Android.mk</code></li>
	<li><code>product_config.mk</code></li>
	<li><code>system.prop</code></li>
	</ul>
	<li><code>products</code></li>
	<ul>
	<li><code>AndroidProducts.mk</code></li>
	<li><code><first_product_name>.mk</code></li>
	<li><code><second_product_name>.mk</code></li>
	</ul>
	</ul>
	</ul>
	</p>


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