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| <h2>Change List</h2> |
| <h3>Android NDK, Revision 10d</a> <em>(December 2014)</em></h3> |
| </p> |
| <dt>Important changes:</dt> |
| <dd> |
| <ul> |
| <li>Made GCC 4.8 the default for all 32-bit ABIs. Deprecated GCC 4.6, and |
| will remove it next release. To restore previous behavior, either add |
| <code>NDK_TOOLCHAIN_VERSION=4.6</code> to ndk-build, or |
| add <code>--toolchain=arm-linux-androideabi-4.6</code> when executing |
| <code>make-standalone-toolchain.sh</code> on the command line. GCC 4.9 remains the |
| default for 64-bit ABIs.</li> |
| |
| <li>Stopped all x86[_64] toolchains from adding <code>-mstackrealign</code> by default. The |
| NDK toolchain assumes a 16-byte stack alignment. The tools and options used by default |
| enforce this rule. A user writing assembly code must make sure to preserve stack |
| alignment, and ensure that other compilers also comply with this rule. |
| (GCC bug <a href="https://gcc.gnu.org/bugzilla/show_bug.cgi?id=38496">38496</a>)</li> |
| |
| <li>Added Address Sanitizer functionality to Clang 3.5 support to the ARM and x86 ABIs. |
| More information on this change is available |
| <a href="https://code.google.com/p/address-sanitizer/wiki/Android">here</a>.</li> |
| |
| <li>Introduced the requirement, starting from API level 21, to use <code>-fPIE -pie |
| </code> when building. In API levels 16 and higher, ndk-build uses <code>PIE</code> |
| when building. This change has a number of implications, which are discussed |
| <a href="https://code.google.com/p/android-developer-preview/issues/detail?id=888">here</a>. |
| These implications do not apply to shared libraries.</li> |
| </ul> |
| </dd> |
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| |
| |
| <dt>Important bug fixes:</dt> |
| <dd> |
| <ul> |
| <li>Made more fixes related to |
| <a href="https://gcc.gnu.org/ml/gcc-patches/2014-10/msg00906.html"> |
| A53 Errata #835769</a> in the aarch64-linux-android-4.9 linker. As part of this, GCC |
| passes a new option, <code>--fix-cortex-a53-835769</code>, when |
| <code>-mfix-cortex-a53-835769</code> (enabled by default) is specified. |
| For more information, see |
| <a href="https://sourceware.org/ml/binutils/2014-10/msg00198.html">this page</a> and |
| <a href="https://sourceware.org/ml/binutils/2014-11/msg00287.html">this page</a></li> |
| |
| <li>Documented a fix to a libc++ <code>sscanf/vsscanf</code> hang that occurred in API level |
| 21. The fix itself had been implemented in r10c. |
| (Issue <a href="http://b.android.com/77988">77988</a>)</li> |
| |
| <li>Fixed an AutoFDO (<code>-fauto-profile</code>) crash that occurred with GCC 4.9 when |
| <code>-Os</code> was specified. (Issue <a href="http://b.android.com/77571">77571</a>)</li> |
| </ul> |
| </dd> |
| |
| |
| <dt>Other bug fixes:</dt> |
| <dd> |
| <ul> |
| <li>Made the following header and library fixes:</li> |
| <ul> |
| <li>Added <code>posix_memalign</code> to API level 16. Also, added a prototype in |
| <code>stdlib.h</code> to API levels 16 to 19. |
| (Issue <a href="http://b.android.com/77861">77861</a>.)</li> |
| <li>Fixed <code>stdatomic.h</code> so that it includes <code><atomic></code> only for |
| C++11.</li> |
| <li>Modified the following headers for standalone use: <code>sys/user.h</code>, and |
| <code>gl2ext.h</code>, <code>dlext.h</code>, <code>fts.h</code>, <code>sgidefs.h</code> |
| for API level 21.</li> |
| <li>Modified <code>sys/user.h</code> to rename <code>mxcsr_mask</code> as <code>mxcr_mask</code>, |
| and to change the data type for <code>u_ar0</code></li> from <code>unsigned long</code> |
| to </code>struct user_regs_struct*</code>. |
| <li>Changed <code>sysconf()</code> return value type from <code>int</code> to |
| <code>long</code>.</li> |
| </ul> |
| |
| <li>Fixed ndk-build's handling of <code>thumb</code> for <code>LOCAL_ARM_MODE</code>: In |
| r10d, ndk-build adds <code>LOCAL_LDFLAGS+=-mthumb</code> by default, unless one of the |
| following conditions applies:</li> |
| <ul> |
| <li><code>LOCAL_ARM_MODE</code> has been set equal to <code>arm</code>.</li> |
| <li>You are doing a debug build (with settings such as <code>APP_OPTIM=debug</code> and |
| <code>AndroidManifest.xml</code> containing <code>android:debuggable="true"</code>), |
| where ARM mode is the default in order to retain compatibility with earlier toolchains. |
| (Issue <a href="http://b.android.com/74040">74040</a>)</li> |
| </ul> |
| |
| <li>Fixed <code>LOCAL_SRC_FILES</code> in ndk-build to use Windows absolute paths. |
| (Issue <a href="http://b.android.com/74333">74333</a>)</li> |
| |
| <li>Removed bash-specific code from ndk-gdb. (Issue <a href="http://b.android.com/73338">73338</a>)</li> |
| |
| <li>Removed bash-specific code from <code>make-standalone-toolchain.sh</code>. |
| (Issue <a href="http://b.android.com/74145">74145)</a></li> |
| |
| <li>Revised documentation concerning a fix for <code>System.loadLibrary()</code> transitive |
| dependencies. (Issue <a href="http://b.android.com/41790">41790</a>)</li> |
| |
| <li>Fixed a problem that was preventing 64-bit packages from extracting on Ubuntu 14.04 and |
| OS X 10.10 (Yosemite). (Issue <a href="http://b.android.com/78148">78148</a>)</li> |
| |
| <li>Fixed an issue with <code>LOCAL_PCH</code> to improve Clang support. (Issue |
| <a href="http://b.android.com/77575">77575</a>)</li> |
| |
| <li>Clarified "requires executable stack" warning from ld.gold. (Issue |
| <a href="http://b.android.com/79115">79115</a>)</li> |
| </ul> |
| </dd> |
| |
| |
| |
| A comprehensive change list, going through all previous releases of the NDK, can be found at the <a href="http://developer.android.com/tools/sdk/ndk/index.html">Android developer website.</a><br> |
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