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README.android
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README.android
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How to cross-compile for Android.
This is known to work at least for Android 3.0 running on a Motorola
Xoom. Other configurations and toolchains might work, but haven't
been tested. Feedback is welcome.
You need the android-ndk-r5c native development kit. Install it
somewhere. Then do this:
# Maybe not all of these are necessary -- I'm just being cautious.
#
export AR=/path/to/android-ndk-r5c/toolchains/arm-linux-androideabi-4.4.3/prebuilt/linux-x86/bin/arm-linux-androideabi-ar
export CPP=/path/to/android-ndk-r5c/toolchains/arm-linux-androideabi-4.4.3/prebuilt/linux-x86/bin/arm-linux-androideabi-cpp
export LD=/path/to/android-ndk-r5c/toolchains/arm-linux-androideabi-4.4.3/prebuilt/linux-x86/bin/arm-linux-androideabi-ld
export CXX=/path/to/android-ndk-r5c/toolchains/arm-linux-androideabi-4.4.3/prebuilt/linux-x86/bin/arm-linux-androideabi-g++
export CC=/path/to/android-ndk-r5c/toolchains/arm-linux-androideabi-4.4.3/prebuilt/linux-x86/bin/arm-linux-androideabi-gcc
# Configure. This will build a Valgrind that needs to go in
# /data/local/Inst on the device and that uses /data/local/tmp
# as the tmp dir on the device. This means it can operate on
# non-rooted (production) devices.
#
cd trunk
./autogen.sh
CPPFLAGS="--sysroot=/path/to/android-ndk-r5c/platforms/android-3/arch-arm" \
CFLAGS="--sysroot=/path/to/android-ndk-r5c/platforms/android-3/arch-arm" \
./configure --prefix=/data/local/Inst \
--host=armv7-unknown-linux --target=armv7-unknown-linux \
--with-tmpdir=/data/local/tmp
# At the end of the configure run, a few lines of details
# are printed. Make sure that you see these two lines:
#
# Platform variant: android
# Primary -DVGPV string: -DVGPV_arm_linux_android=1
#
# If you see anything else at this point, something is wrong, and
# either the build will fail, or will succeed but you'll get something
# which won't work.
# Build, and park the install tree in `pwd`/Inst
make
make install DESTDIR=`pwd`/Inst
# To get the install tree onto the device:
# (I don't know why it's not "adb push Inst /data/local", but this
# formulation does appear to put the result in /data/local/Inst.)
#
adb push Inst /
# To run (on the device)
/data/local/Bin/valgrind [the usual args etc]