Merge "Docs: NDK r10e changes to publish to DAC." into lmp-docs

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<p>The following sections provide information about releases of the NDK.</p>

<div class="toggle-content opened">

 <p>

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

     src="/assets/images/triangle-opened.png" class="toggle-content-img" alt=""

   >Android NDK, Revision 10e</a> <em>(May 2015)</em>

 </p>

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

    <dl>

      <dt>Important changes:</dt>

      <dd>

      <ul>

        <li>Integrated the workaround for Cortex-A53 Erratum 843419 into the

        {@code aarch64-linux-android-4.9} linker. For more information on this workaround, see

        <a href="https://sourceware.org/ml/binutils/2015-03/msg00446.html">Workaround for cortex-a53

        erratum 843419.</a></li>

         <li>Added Clang 3.6; {@code NDK_TOOLCHAIN_VERSION=clang} now picks that version

         of Clang by default.</li>

         <li>Removed Clang 3.4.</li>

         <li>Removed GCC 4.6.</li>

         <li>Implemented multithreading support in {@code ld.gold} for all architectures. It can

         now link with or without support for multithreading; the default is to do it without.

            <ul>

            <li>To compile with multithreading, use the {@code --threads} option.</li>

            <li>To compile without multithreading, use the {@code --no-threads} option.</li>

            </ul>

            </li>

         <li>Upgraded GDB/gdbserver to 7.7 for all architectures.</li>

         <li>Removed the NDK package for 32-bit Darwin.</li>

      </ul>

      </dd>

   <dl>

     <dt>Important bug fixes:</dt>

     <dd>

     <ul>

        <li>Fixed a crash that occurred when there were OpenMP loops outside of the main thread.</li>

        <li>Fixed a GCC 4.9 internal compiler error (<i>ICE</i>) that occured when the user declared

        {@code #pragma GCC optimize ("O0")}, but had a different level of optimization specified

        on the command line. The {@code pragma} takes precedence.</li>

        <li>Fixed an error that used to produce a crash with the following error message:

<pre>

in add_stores, at var-tracking.c:6000

</pre>

        </li>

        <li>Implemented a workaround for a Clang 3.5 issue in which LLVM auto-vectorization

        generates {@code llvm.cttz.v2i64()}, an instruction with no counterpart in the ARM

        instruction set.</li>

     </ul>

     </dd>

     <dt>Other bug fixes:</dt>

     <dd>

     <ul>

        <li>Made the following header and library fixes:</li>

           <ul>

           <li>Fixed {@code PROPERTY_*} in {@code media/NdkMediaDrm.h}.</li>

           <li>Fixed {@code sys/ucontext.h} for {@code mips64}.</li>

           <li>Dropped the Clang version check for {@code __builtin_isnan} and

           {@code __builtin_isinf}.</li>

           <li>Added {@code android-21/arch-mips/usr/include/asm/reg.h}

           and {@code android-21/arch-mips64/usr/include/asm/reg.h}.</li>

           </ul>

           </li>

        <li>Fixed a spurious array-bounds warning that GCC 4.9 produced for x86, and reenabled the

        array bounds warning that GCC 4.9 had produced for ARM. The warning for ARM had

        previously been unconditionally disabled.</li>

        <li>Fixed Clang 3.5 for {@code mips} and {@code mips64} to create a writable

            {@code .gcc_except_table} section, thus matching GCC behavior. This change allows you

            to avoid the following linker warning:

<pre>

.../ld: warning: creating a DT_TEXTREL in a shared object

</pre>

            </li>

        <li>Backported a fix for {@code compiler-rt} issues that were causing crashes when Clang

        compiled for {@code mips64}. For more information, see LLVM Issue

        <a href="http://llvm.org/bugs/show_bug.cgi?id=20098">20098</a>.</li>

        <li>Fixed Clang 3.5 crashes that occurred on non-ASCII comments. (Issue

        <a href="https://code.google.com/p/android/issues/detail?id=81440">81440</a>)</li>

        <li>Fixed {@code stlport collate::compare} to return {@code -1} and {@code 1}. Previously,

        it had returned arbitrary signed numbers.</li>

        <li>Fixed {@code ndk-gdb} for 64-bit ABIs. (Issue

        <a href="https://code.google.com/p/android/issues/detail?id=118300">118300</a>)</li>

        <li>Fixed the crash that the HelloComputeNDK sample for RenderScript was producing on

        Android 4.4 (Android API level 19). For more information, see

        <a href="http://stackoverflow.com/questions/28057049/targeting-pre-lollipop-devices-using-renderscript-from-ndk-c">this page</a>.</li>

        <li>Fixed {@code libc++ __wrap_iter} for GCC. For more information, see LLVM Issue

        <a href="http://llvm.org/bugs/show_bug.cgi?id=22355">22355</a>.</li>

        <li>Fixed {@code .asm} support for ABI {@code x86_64}.</li>

        <li>Implemented a workaround for the GCC 4.8 {@code stlport} issue. (Issue

        <a href="https://android-review.googlesource.com/#/c/127773">127773</a>)</li>

        <li>Removed the trailing directory separator {@code \\} from the project path in Windows.

        (Issue <a href="https://code.google.com/p/android/issues/detail?id=160584">160584</a>)

        </li>

        <li>Fixed a {@code no rule to make target} error that occurred when compiling a single

        {@code .c} file by executing the {@code ndk-build.cmd} command from {@code gradle}. (Issue

        <a href="https://code.google.com/p/android/issues/detail?id=66937">66937</a>)</li>

        <li>Added the {@code libatomic.a} and {@code libgomp.a} libraries that had been missing from

        the following host toolchains:

        <ul>

           <li>{@code aarch64-linux-android-4.9}</li>

           <li>{@code mips64el-linux-android-4.9}</li>

           <li>{@code mipsel-linux-android-4.9}</li>

           <li>{@code x86_64-4.9}</li>

        </ul>

     </ul>

     </dd>

     <dt>Other changes:</dt>

     <dd>

       <ul>

       <li>Added {@code ld.gold} for {@code aarch64}. The default linker remains {@code ld.bfd}.

       To explicitly enable {@code ld.gold}, add {@code -fuse-ld=gold} to the

       {@code LOCAL_LDFLAGS} or {@code APP_LDFLAGS} variable.</li>

       <li>Built the MIPS and MIPS64 toolchains with {@code binutils-2.25}, which provides improved

       R6 support.</li>

       <li>Made {@code -fstandalone-debug} (full debug info) a default option for Clang.</li>

       <li>Replaced {@code -fstack-protector} with {@code -fstack-protector-strong} for

       the ARM, AArch64, X86, and X86_64 toolchains for GCC 4.9, Clang 3.5, and

       Clang 3.6.</li>

       <li>Added the {@code --package} command-line switch to {@code ndk-gdb} to allow the build

       system to override the package name. (Issue

       <a href="https://code.google.com/p/android/issues/detail?id=56189">56189</a>)</li>

       <li> Deprecated {@code -mno-ldc1-stc1} for MIPS.  This option may not work with the new

       {@code -fpxx} and {@code -mno-odd-spreg} options, or with the FPXX ABI.</li>

       <li>Added MIPS MSA and R6 detection to {@code cpu-features}.</li>

     </ul>

     </dd>

   </dl>

 </div>

</div>

<div class="toggle-content closed">

 <p>

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

     src="/assets/images/triangle-closed.png" class="toggle-content-img" alt=""

   >Android NDK, Revision 10d</a> <em>(December 2014)</em>

 </p>

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