am 76f7774d: am f6e55123: Merge "docs: NDK r8d Release Notes" into jb-mr1-dev

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page.title=Android NDK

@jd:body

<div class="toggle-content opened">

  <p><a href="#" onclick="return toggleContent(this)">

    <img src="{@docRoot}assets/images/triangle-opened.png" class="toggle-content-img"

      alt="">Android NDK, Revision 8d</a> <em>(December 2012)</em>

  </p>

  <div class="toggle-content-toggleme">

    <dl>

      <dt>Important changes:</dt>

      <dd>

        <ul>

          <li>Added the GNU Compiler Collection (GCC) 4.7 compiler to the NDK. The GCC 4.6 compiler

            is still the default, so you must to explicitly enable the new version as follows:

            <ul>

              <li>For {@code ndk-build}, export the {@code NDK_TOOLCHAIN_VERSION=4.7} variable

                <em>or</em> add it to {@code Application.mk}.</li>

              <li>For standalone builds, add the {@code --toolchain=} option to

                {@code make-standalone-toolchain.sh}, for example:

                <pre>--toolchain=arm-linux-androideabi-4.7</pre></li>

            </ul>

            <p class="note">

              <strong>Note:</strong> This feature is experimental. Please try it and

              <a href="http://code.google.com/p/android/issues/list">report any issues</a>.</p>

          </li>

          <li>Added {@code stlport} exception support via gabi++.  Note that the new gabi++

            depends on {@code dlopen} and related code, meaning that:

            <ul>

              <li>You can no longer build a <em>static</em> executable using the {@code -static}

                option or include {@code libstlport_static.a} using

                {@code APP_STL := stlport_static}. (You can still use the {@code -static} option

                with a standalone toolchain.) Compiling a <em>dynamic</em> executable using

                {@code include $(BUILD_EXECUTABLE)} continues to work because the compiler

                automatically adds the {@code -ldl} option.</li>

              <li>If your project links using {@code -nostdlib} and {-Wl,--no-undefined}, you

                must manually include the {@code -ldl} option.</li>

            </ul>

              For more information, see {@code CPLUSPLUS-SUPPORT.html}.

              <p class="note">

                <strong>Note:</strong> This feature is experimental and works better with the GCC

                4.6/4.7 compilers than with GCC 4.4.3 or Clang 3.1. Please try it and

                <a href="http://code.google.com/p/android/issues/list">report any issues</a>.</p>

          </li>

          <li>Added a {@code -mstack-protector-guard=} option for x86 to choose between a

            <em>global</em> default path which is compatible with older Android C library (bionic)

            and a new <em>tls</em> path (%gs:20) for {@code -fstack-protector},

            {@code -fstack-protector-all} and {@code -fstack-protector-strong} using the GCC 4.6

            and higher compilers.

            <p class="note">

              <strong>Note:</strong> The {@code -mstack-protector-guard} setting itself does not

              enable any {@code -fstack-protector*} options.</p>

          </li>

          <li>Added {@code android_setCpu()} function to

            {@code sources/android/cpufeatures/cpu-features.c} for use when auto-detection via

            {@code /proc} is not possible in Android 4.1 and higher.

            (<a href="http://code.google.com/p/chromium/issues/detail?id=164154">Chromium Issue

            164154</a>)</li>

        </ul>

      </dd>

      <dt>Important bug fixes:</dt>

      <dd>

        <ul>

          <li>Fixed unnecessary rebuild of object files when using the {@code ndk-build} script.

            (<a href="http://code.google.com/p/android/issues/detail?id=39810">Issue 39810</a>)</li>

          <li>Fixed a linker failure with the NDK 8c release for Mac OS X 10.6.x that produced the

            following error:

            <pre>

dyld: lazy symbol binding failed: Symbol not found: _memmem

Referenced from: ...../arm-linux-androideabi/bin/ld

Expected in: /usr/lib/libSystem.B.dylib</pre>

            This problem was caused by building on Mac OS X 10.7, which produced binaries that were

            not compatible with Mac OS 10.6.x and the NDK.

          </li>

          <li>Removed the {@code -x c++} options from the Clang++ standalone build script.

          (<a href="http://code.google.com/p/android/issues/detail?id=39089">Issue 39089</a>)</li>

          <li>Fixed issues using the {@code NDK_TOOLCHAIN_VERSION=clang3.1} option in Cygwin.

           (<a href="http://code.google.com/p/android/issues/detail?id=39585">Issue 39585</a>)</li>

          <li>Fixed the {@code make-standalone-toolchain.sh} script to allow generation of a

            standalone toolchain using the Cygwin or MinGW environments. The resulting toolchain

            can be used in Cygwin, MingGW or CMD.exe environments.

            (<a href="http://code.google.com/p/android/issues/detail?id=39915">Issue 39915</a>,

            <a href="http://code.google.com/p/android/issues/detail?id=39585">Issue 39585</a>)</li>

          <li>Added missing {@code SL_IID_ANDROIDBUFFERQUEUESOURCE} option in android-14 builds for

            ARM and X86.

            (<a href="http://code.google.com/p/android/issues/detail?id=40625">Issue 40625</a>)</li>

          <li>Fixed x86 CPU detection for the {@code ANDROID_CPU_X86_FEATURE_MOVBE} feature.

            (<a href="http://code.google.com/p/android/issues/detail?id=39317">Issue 39317</a>)</li>

          <li>Fixed an issue preventing the Standard Template Library (STL) from using C++

            sources that do not have a {@code .cpp} file extension.</li>

          <li>Fixed GCC 4.6 ARM internal compiler error <em>at reload1.c:1061</em>.

            (<a href="http://code.google.com/p/android/issues/detail?id=20862">Issue 20862</a>)</li>

          <li>Fixed GCC 4.4.3 ARM internal compiler error <em>at emit-rtl.c:1954</em>.

            (<a href="http://code.google.com/p/android/issues/detail?id=22336">Issue 22336</a>)</li>

          <li>Fixed GCC 4.4.3 ARM internal compiler error <em>at postreload.c:396</em>.

            (<a href="http://code.google.com/p/android/issues/detail?id=22345">Issue 22345</a>)</li>

          <li>Fixed problem with GCC 4.6/4.7 skipping lambda functions.

            (<a href="http://code.google.com/p/android/issues/detail?id=35933">Issue 35933</a>)</li>

        </ul>

      </dd>

      <dt>Other bug fixes:</dt>

      <dd>

        <ul>

          <li>NDK header file fixes:

            <ul>

              <li>Fixed {@code __WINT_TYPE__} and {@code wint_t} to be the same type.</li>

              <li>Corrected typo in {@code android/bitmap.h}.

                (<a href="http://code.google.com/p/android/issues/detail?id=15134">Issue 15134</a>)

              </li>

              <li>Corrected typo in {@code errno.h}.</li>

              <li>Added check for the presence of {@code __STDC_VERSION__} in {@code sys/cdefs.h}.

                (<a href="http://code.google.com/p/android/issues/detail?id=14627">Issue 14627</a>)

              </li>

              <li>Reorganized headers in {@code byteswap.h} and {@code dirent.h}.</li>

              <li>Fixed {@code limits.h} to include {@code page.h} which provides {@code PAGE_SIZE}

                settings.

                (<a href="http://code.google.com/p/android/issues/detail?id=39983">Issue 39983</a>)

              </li>

              <li>Fixed return type of {@code glGetAttribLocation()} and

                {@code glGetUniformLocation()} from {@code int} to {@code GLint}.</li>

              <li>Fixed {@code __BYTE_ORDER} constant for x86 builds.

                (<a href="http://code.google.com/p/android/issues/detail?id=39824">Issue 39824</a>)

              </li>

            </ul>

          </li>

          <li>Fixed {@code ndk-build} script to not overwrite {@code -Os} with {@code -O2} for ARM

            builds.</li>

          <li>Fixed build scripts to allow overwriting of {@code HOST_AWK}, {@code HOST_SED}, and

            {@code HOST_MAKE} settings.</li>

          <li>Fixed issue for {@code ld.gold} on {@code fsck_msdos} builds linking objects built by

            the Intel C/C++ compiler (ICC).</li>

          <li>Fixed ARM EHABI support in Clang to conform to specifications.</li>

          <li>Fixed GNU Debugger (GDB) to shorten the time spent on walking the target's link map

            during {@code solib} events.

            (<a href="http://code.google.com/p/android/issues/detail?id=38402">Issue 38402</a>)</li>

          <li>Fixed missing {@code libgcc.a} file when linking shared libraries.</li>

        </ul>

      </dd>

      <dt>Other changes:</dt>

      <dd>

        <ul>

          <li>Backported 64-bit built-in atomic functions for ARM to GCC 4.6.</li>

          <li>Added documentation for audio output latency, along with other documentation and

            fixes.</li>

          <li>Fixed debug builds with Clang so that non-void functions now raise a {@code SIGILL}

            signal for paths without a return statement.</li>

          <li>Updated {@code make-standalone-toolchain.sh} to accept the suffix {@code -clang3.1}

            which is equivalent to adding {@code --llvm-version=3.1} to the GCC 4.6 toolchain.</li>

          <li>Updated GCC and Clang bug report URL to:

            <a href="http://source.android.com/source/report-bugs.html">http://source.android.com/source/report-bugs.html</a></li>

          <li>Added ARM ELF support to {@code llvm-objdump}.</li>

          <li>Suppressed <em>treating c input as c++</em> warning for Clang builds.</li>

          <li>Updated build so that only the 32-bit version of {@code libiberty.a} is built and

            placed in {@code lib32/}.</li>

        </ul>

      </dd>

    </dl>

  </div>

</div>

<div class="toggle-content closed">

  <p><a href="#" onclick="return toggleContent(this)">

    <img src="{@docRoot}assets/images/triangle-closed.png" class="toggle-content-img"

      alt="">Android NDK, Revision 8c</a> <em>(November 2012)</em>

  </p>