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sudo apt-get install mercurial ccache
==== Building for the x86 architecture ====
If you want to build for x86, substitute:
ac_add_options --target=i386-linux-android
for the target specified above. Note: you cannot use <tt>ac_add_options --disable-optimize</tt> when building for x86. See {{bug|965870}}.
==== Building Gingerbread-only ====
For legacy Gingerbread devices, there is a Gingerbread-only build that is optimized for performance and apk size for older devices but does not include some of the newer features that are available.
To make a Gingerbread-only build, you need to use a different [https://dxr.mozilla.org/mozilla-central/source/mobile/android/config/mozconfigs/android-api-9-10-constrained/nightly mozconfig].
==== Building for the ARMv6 architecture ====
'''ARMv6 is no longer a supported target as of Firefox 33.'''
If you want to build for ARMv6 instead of ARMv7 (only required for very old, very low end phones), add:
ac_add_options --with-arch=armv6
==== Unsupported build flags ====
Do '''not''' specify these flags because the resulting build will cause out-of-memory crashes:
ac_add_options --disable-install-strip # Do not use!
==== Updating the builders` SDK ====
i.e. Nightly builds & treeherder. See [[Mobile/Fennec/Android/Updating_SDK_on_builders]].
=== Multilocale builds ===
ac_add_options --enable-debug
ac_add_options --enable-debug-symbols
=== Troubleshooting ===
