Merge "docs: ndk r7 rel notes" into ics-mr0

This commit is contained in:
Robert Ly
2011-11-11 12:06:39 -08:00
committed by Android (Google) Code Review
2 changed files with 316 additions and 10 deletions

View File

@@ -1,18 +1,19 @@
ndk=true
ndk.win_download=android-ndk-r6b-windows.zip
ndk.win_bytes=67670219
ndk.win_checksum=f496b48fffb6d341303de170a081b812
ndk.win_download=android-ndk-r7-windows.zip
ndk.win_bytes=81270552
ndk.win_checksum=55483482cf2b75e8dd1a5d9a7caeb6e5
ndk.mac_download=android-ndk-r6b-darwin-x86.tar.bz2
ndk.mac_bytes=52798843
ndk.mac_checksum=65f2589ac1b08aabe3183f9ed1a8ce8e
ndk.mac_download=android-ndk-r7-darwin-x86.tar.bz2
ndk.mac_bytes=71262092
ndk.mac_checksum=817ca5675a1dd44078098e43070f19b6
ndk.linux_download=android-ndk-r6b-linux-x86.tar.bz2
ndk.linux_bytes=46532436
ndk.linux_checksum=309f35e49b64313cfb20ac428df4cec2
ndk.linux_download=android-ndk-r7-linux-x86.tar.bz2
ndk.linux_bytes=64884365
ndk.linux_checksum=bf15e6b47bf50824c4b96849bf003ca3
page.title=Android NDK
@jd:body
<h2 id="notes">Revisions</h2>
@@ -61,6 +62,310 @@ padding: .25em 1em;
<div class="toggleable open">
<a href="#" onclick="return toggleDiv(this)"><img src=
"{@docRoot}assets/images/triangle-opened.png" class="toggle-img" height="9px" width="9px">
Android NDK, Revision 7</a> <em>(November 2011)</em>
<div class="toggleme">
<p>This release of the NDK includes new features to support the Android 4.0 platform as well
as many other additions and improvements:</p>
<dl>
<dt>New features</dt>
<dd>
<ul>
<li>Added official NDK APIs for Android 4.0 (API level 14), which adds the following
native features to the platform:
<ul>
<li>Added native multimedia API based on the Khronos Group OpenMAX AL™ 1.0.1
standard. The new <code>&lt;OMXAL/OpenMAXAL.h&gt;</code> and
<code>&lt;OMXAL/OpenMAXAL_Android.h&gt;</code> headers allow applications targeting
API level 14 to perform multimedia output directly from native code by using a new
Android-specific buffer queue interface. For more details, see
<code>docs/openmaxal/index.html</code> and <a href=
"http://www.khronos.org/openmax/">http://www.khronos.org/openmax/</a>.</li>
<li>Updated the native audio API based on the Khronos Group OpenSL ES 1.0.1™
standard. With API Level 14, you can now decode compressed audio (e.g. MP3, AAC,
Vorbis) to PCM. For more details, see <code>docs/opensles/index.html</code> and
<a href=
"http://www.khronos.org/opensles">http://www.khronos.org/opensles/</a>.</li>
</ul>
</li>
<li>Added CCache support. To speed up large rebuilds, define the
<code>NDK_CCACHE</code> environment variable to <code>ccache</code> (or the path to
your <code>ccache</code> binary). When declared, the NDK build system automatically
uses CCache when compiling any source file. For example:
<pre>
export NDK_CCACHE=ccache
</pre>
<p class="note"><strong>Note:</strong> CCache is not included in the NDK release
so you must have it installed prior to using it. For more information about CCache, see
<a href="http://ccache.samba.org">http://ccache.samba.org</a>.</p>
</li>
<li>Added support for setting <code>APP_ABI</code> to <code>all</code> to indicate that
you want to build your NDK modules for all the ABIs supported by your given NDK
release. This means that either one of the following two lines in your
<code>Application.mk</code> are equivalent with this release:
<pre>
APP_ABI := all
APP_ABI := armeabi armeabi-v7a x86
</pre>
<p>This also works if you define <code>APP_ABI</code> when calling
<code>ndk-build</code> from the command-line, which is a quick way to check that your
project builds for all supported ABIs without changing the project's
<code>Application.mk file</code>. For example:</p>
<pre>
ndk-build APP_ABI=all
</pre>
</li>
<li>Added a <code>LOCAL_CPP_FEATURES</code> variable in <code>Android.mk</code> that
allows you to declare which C++ features (RTTI or Exceptions) your module uses. This
ensures that the final linking works correctly if you have prebuilt modules that depend
on these features. See <code>docs/ANDROID-MK.html</code> and
<code>docs/CPLUSPLUS-SUPPORT.html</code> for more details.</li>
<li>Shortened paths to source and object files that are used in build commands. When
invoking <code>$NDK/ndk-build</code> from your project path, the paths to the source,
object, and binary files that are passed to the build commands are significantly
shorter now, because they are passed relative to the current directory. This is useful
when building projects with a lot of source files, to avoid limits on the maximum
command line length supported by your host operating system. The behavior is unchanged
if you invoke <code>ndk-build</code> from a sub-directory of your project tree, or if
you define <code>NDK_PROJECT_PATH</code> to point to a specific directory.</li>
</ul>
</dd>
<dt>Experimental features</dt>
<dd>
You can now build your NDK source files on Windows <em>without</em> Cygwin by calling the
<code>ndk-build.cmd</code> script from the command line from your project path. The
script takes exactly the same arguments as the original <code>ndk-build</code> script.
The Windows NDK package comes with its own prebuilt binaries for GNU Make, Awk and other
tools required by the build. You should not need to install anything else to get a
working build system.
<p class="caution"><strong>Important:</strong> <code>ndk-gdb</code> does not work on
Windows, so you still need Cygwin to debug.</p>
<p>This feature is still experimental, so feel free to try it and report issues on the
<a href="http://b.android.com">public bug database</a> or <a href=
"http://groups.google.com/group/android-ndk">public forum</a>. All samples and unit tests
shipped with the NDK succesfully compile with this feature.</p>
</dd>
<dt>Important bug fixes</dt>
<dd>
<ul>
<li>Imported shared libraries are now installed by default to the target installation
location (<code>libs/&lt;abi&gt;</code>) if <code>APP_MODULES</code> is not defined in
your <code>Application.mk</code>. For example, if a top-level module <code>foo</code>
imports a module <code>bar</code>, then both <code>libfoo.so</code> and
<code>libbar.so</code> are copied to the install location. Previously, only
<code>libfoo.so</code> was copied, unless you listed <code>bar</code> in your
<code>APP_MODULES</code> too. If you define <code>APP_MODULES</code> explicitly, the
behavior is unchanged.</li>
<li><code>ndk-gdb</code> now works correctly for activities with multiple categories in
their MAIN intent filters.</li>
<li>Static library imports are now properly transitive. For example, if a top-level
module <code>foo</code> imports static library <code>bar</code> that imports static
library <code>zoo</code>, the <code>libfoo.so</code> will now be linked against both
<code>libbar.a</code> and <code>libzoo.a</code>.</li>
</ul>
</dd>
<dt>Other changes</dt>
<dd>
<ul>
<li><code>docs/NATIVE-ACTIVITY.HTML</code>: Fixed typo. The minimum API level should be
9, not 8 for native activities.</li>
<li><code>docs/STABLE-APIS.html</code>: Added missing documentation listing EGL as a
supported stable API, starting from API level 9.</li>
<li><code>download-toolchain-sources.sh</code>: Updated to download the toolchain
sources from <a href="http://android.googlesource.com">android.googlesource.com</a>,
which is the new location for the AOSP servers.</li>
<li>Added a new C++ support runtime named <code>gabi++</code>. More details about it
are available in the updated <code>docs/CPLUSPLUS-SUPPORT.html</code>.</li>
<li>Added a new C++ support runtime named <code>gnustl_shared</code> that corresponds
to the shared library version of GNU libstdc++ v3 (GPLv3 license). See more info at
<code>docs/CPLUSPLUS-SUPPORT.html</code></li>
<li>Added support for RTTI in the STLport C++ runtimes (no support for
exceptions).</li>
<li>Added support for multiple file extensions in <code>LOCAL_CPP_EXTENSION</code>. For
example, to compile both <code>foo.cpp</code> and <code>bar.cxx</code> as C++ sources,
declare the following:
<pre>
LOCAL_CPP_EXTENSION := .cpp .cxx
</pre>
</li>
<li>Removed many unwanted exported symbols from the link-time shared system libraries
provided by the NDK. This ensures that code generated with the standalone toolchain
doesn't risk to accidentally depend on a non-stable ABI symbol (e.g. any libgcc.a
symbol that changes each time the toolchain used to build the platform is changed)</li>
<li>Refreshed the EGL and OpenGLES Khronos headers to support more extensions. Note
that this does <em>not</em> change the NDK ABIs for the corresponding libraries,
because each extension must be probed at runtime by the client application.
<p>The extensions that are available depend on your actual device and GPU drivers,
not the platform version the device runs on. The header changes simply add new
constants and types to make it easier to use the extensions when they have been
probed with <code>eglGetProcAddress()</code> or <code>glGetProcAddress()</code>. The
following list describes the newly supported extensions:</p>
<dl>
<dt>GLES 1.x</dt>
<dd>
<ul>
<li><code>GL_OES_vertex_array_object</code></li>
<li><code>GL_OES_EGL_image_external</code></li>
<li><code>GL_APPLE_texture_2D_limited_npot</code></li>
<li><code>GL_EXT_blend_minmax</code></li>
<li><code>GL_EXT_discard_framebuffer</code></li>
<li><code>GL_EXT_multi_draw_arrays</code></li>
<li><code>GL_EXT_read_format_bgra</code></li>
<li><code>GL_EXT_texture_filter_anisotropic</code></li>
<li><code>GL_EXT_texture_format_BGRA8888</code></li>
<li><code>GL_EXT_texture_lod_bias</code></li>
<li><code>GL_IMG_read_format</code></li>
<li><code>GL_IMG_texture_compression_pvrtc</code></li>
<li><code>GL_IMG_texture_env_enhanced_fixed_function</code></li>
<li><code>GL_IMG_user_clip_plane</code></li>
<li><code>GL_IMG_multisampled_render_to_texture</code></li>
<li><code>GL_NV_fence</code></li>
<li><code>GL_QCOM_driver_control</code></li>
<li><code>GL_QCOM_extended_get</code></li>
<li><code>GL_QCOM_extended_get2</code></li>
<li><code>GL_QCOM_perfmon_global_mode</code></li>
<li><code>GL_QCOM_writeonly_rendering</code></li>
<li><code>GL_QCOM_tiled_rendering</code></li>
</ul>
</dd>
<dt>GLES 2.0</dt>
<dd>
<ul>
<li><code>GL_OES_element_index_uint</code></li>
<li><code>GL_OES_get_program_binary</code></li>
<li><code>GL_OES_mapbuffer</code></li>
<li><code>GL_OES_packed_depth_stencil</code></li>
<li><code>GL_OES_texture_3D</code></li>
<li><code>GL_OES_texture_float</code></li>
<li><code>GL_OES_texture_float_linear</code></li>
<li><code>GL_OES_texture_half_float_linear</code></li>
<li><code>GL_OES_texture_npot</code></li>
<li><code>GL_OES_vertex_array_object</code></li>
<li><code>GL_OES_EGL_image_external</code></li>
<li><code>GL_AMD_program_binary_Z400</code></li>
<li><code>GL_EXT_blend_minmax</code></li>
<li><code>GL_EXT_discard_framebuffer</code></li>
<li><code>GL_EXT_multi_draw_arrays</code></li>
<li><code>GL_EXT_read_format_bgra</code></li>
<li><code>GL_EXT_texture_format_BGRA8888</code></li>
<li><code>GL_EXT_texture_compression_dxt1</code></li>
<li><code>GL_IMG_program_binary</code></li>
<li><code>GL_IMG_read_format</code></li>
<li><code>GL_IMG_shader_binary</code></li>
<li><code>GL_IMG_texture_compression_pvrtc</code></li>
<li><code>GL_IMG_multisampled_render_to_texture</code></li>
<li><code>GL_NV_coverage_sample</code></li>
<li><code>GL_NV_depth_nonlinear</code></li>
<li><code>GL_QCOM_extended_get</code></li>
<li><code>GL_QCOM_extended_get2</code></li>
<li><code>GL_QCOM_writeonly_rendering</code></li>
<li><code>GL_QCOM_tiled_rendering</code></li>
</ul>
</dd>
<dt>EGL</dt>
<dd>
<ul>
<li><code>EGL_ANDROID_recordable</code></li>
<li><code>EGL_NV_system_time</code></li>
</ul>
</dd>
</dl>
</li>
</ul>
</dd>
</dl>
</div>
</div>
<div class="toggleable closed">
<a href="#" onclick="return toggleDiv(this)"><img src=
"{@docRoot}assets/images/triangle-closed.png" class="toggle-img" height="9px" width="9px">
Android NDK, Revision 6b</a> <em>(August 2011)</em>
<div class="toggleme">

View File

@@ -192,7 +192,8 @@ class="new">new!</span>
<span style="display:none" class="zh-TW"></span>
</h2>
<ul>
<li><a href="<?cs var:toroot ?>sdk/ndk/index.html">Android NDK, r6b</a>
<li><a href="<?cs var:toroot ?>sdk/ndk/index.html">Android NDK, r7</a>
<span class="new">new!</span>
</li>
<li><a href="<?cs var:toroot ?>sdk/ndk/overview.html">What is the NDK?</a></li>
</ul>