Commit a3400f43 authored by Johann's avatar Johann Committed by Johann Koenig

Documentation for building unit tests for Android

BUG=webm:1258

Change-Id: Iea142f7b0df0e047720e8c5362464932de57d564
parent c892521b
......@@ -41,6 +41,25 @@
# Running ndk-build will build libvpx and include it in your project.
#
# Alternatively, building the examples and unit tests can be accomplished in the
# following way:
#
# Create a standalone toolchain from the NDK:
# https://developer.android.com/ndk/guides/standalone_toolchain.html
#
# For example - to test on arm64 devices with clang:
# $NDK/build/tools/make_standalone_toolchain.py \
# --arch arm64 --install-dir=/tmp/my-android-toolchain
# export PATH=/tmp/my-android-toolchain/bin:$PATH
# CROSS=aarch64-linux-android- CC=clang CXX=clang++ /path/to/libvpx/configure \
# --target=arm64-android-gcc
#
# Push the resulting binaries to a device and run them:
# adb push test_libvpx /data/tmp/test_libvpx
# adb shell /data/tmp/test_libvpx --gtest_filter=\*Sixtap\*
#
# Make sure to push the test data as well and set LIBVPX_TEST_DATA
CONFIG_DIR := $(LOCAL_PATH)/
LIBVPX_PATH := $(LOCAL_PATH)/libvpx
ASM_CNV_PATH_LOCAL := $(TARGET_ARCH_ABI)/ads2gas
......
......@@ -978,47 +978,50 @@ EOF
;;
android*)
if [ -z "${sdk_path}" ]; then
die "Must specify --sdk-path for Android builds."
fi
SDK_PATH=${sdk_path}
COMPILER_LOCATION=`find "${SDK_PATH}" \
-name "arm-linux-androideabi-gcc*" -print -quit`
TOOLCHAIN_PATH=${COMPILER_LOCATION%/*}/arm-linux-androideabi-
CC=${TOOLCHAIN_PATH}gcc
CXX=${TOOLCHAIN_PATH}g++
AR=${TOOLCHAIN_PATH}ar
LD=${TOOLCHAIN_PATH}gcc
AS=${TOOLCHAIN_PATH}as
STRIP=${TOOLCHAIN_PATH}strip
NM=${TOOLCHAIN_PATH}nm
if [ -z "${alt_libc}" ]; then
alt_libc=`find "${SDK_PATH}" -name arch-arm -print | \
awk '{n = split($0,a,"/"); \
if [ -n "${sdk_path}" ]; then
SDK_PATH=${sdk_path}
COMPILER_LOCATION=`find "${SDK_PATH}" \
-name "arm-linux-androideabi-gcc*" -print -quit`
TOOLCHAIN_PATH=${COMPILER_LOCATION%/*}/arm-linux-androideabi-
CC=${TOOLCHAIN_PATH}gcc
CXX=${TOOLCHAIN_PATH}g++
AR=${TOOLCHAIN_PATH}ar
LD=${TOOLCHAIN_PATH}gcc
AS=${TOOLCHAIN_PATH}as
STRIP=${TOOLCHAIN_PATH}strip
NM=${TOOLCHAIN_PATH}nm
if [ -z "${alt_libc}" ]; then
alt_libc=`find "${SDK_PATH}" -name arch-arm -print | \
awk '{n = split($0,a,"/"); \
split(a[n-1],b,"-"); \
print $0 " " b[2]}' | \
sort -g -k 2 | \
awk '{ print $1 }' | tail -1`
fi
fi
if [ -d "${alt_libc}" ]; then
add_cflags "--sysroot=${alt_libc}"
add_ldflags "--sysroot=${alt_libc}"
fi
if [ -d "${alt_libc}" ]; then
add_cflags "--sysroot=${alt_libc}"
add_ldflags "--sysroot=${alt_libc}"
fi
# linker flag that routes around a CPU bug in some
# Cortex-A8 implementations (NDK Dev Guide)
add_ldflags "-Wl,--fix-cortex-a8"
# linker flag that routes around a CPU bug in some
# Cortex-A8 implementations (NDK Dev Guide)
add_ldflags "-Wl,--fix-cortex-a8"
enable_feature pic
soft_enable realtime_only
if [ ${tgt_isa} = "armv7" ]; then
soft_enable runtime_cpu_detect
fi
if enabled runtime_cpu_detect; then
add_cflags "-I${SDK_PATH}/sources/android/cpufeatures"
enable_feature pic
soft_enable realtime_only
if [ ${tgt_isa} = "armv7" ]; then
soft_enable runtime_cpu_detect
fi
if enabled runtime_cpu_detect; then
add_cflags "-I${SDK_PATH}/sources/android/cpufeatures"
fi
else
echo "Assuming standalone build with NDK toolchain."
echo "See build/make/Android.mk for details."
check_add_ldflags -static
soft_enable unit_tests
fi
;;
......@@ -1392,6 +1395,7 @@ EOF
*-win*-vs*)
;;
*-android-gcc)
# bionic includes basic pthread functionality, obviating -lpthread.
;;
*)
check_header pthread.h && add_extralibs -lpthread
......
......@@ -97,6 +97,7 @@ EOF
# all_platforms is a list of all supported target platforms. Maintain
# alphabetically by architecture, generic-gnu last.
all_platforms="${all_platforms} arm64-android-gcc"
all_platforms="${all_platforms} arm64-darwin-gcc"
all_platforms="${all_platforms} arm64-linux-gcc"
all_platforms="${all_platforms} armv7-android-gcc" #neon Cortex-A8
......
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