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110 lines
3.9 KiB
110 lines
3.9 KiB
7 years ago
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# BUILDING external libs
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Based on https://forum.getmonero.org/5/support/87643/building-monero-v0-10-3-1-for-android and the internet.
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Do not follow this blindly. These instructions are for 32-bit only. 64-bit building mostly involves
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replacing "32" with "64".
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## Prepare Ubuntu environment
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```
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sudo apt-install build-essential cmake tofrodos
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sudo mkdir /opt/android
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sudo chown $LOGNAME /opt/android
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```
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## Install Android NDK
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```
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cd /opt/android
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wget https://dl.google.com/android/repository/android-ndk-r15c-linux-x86_64.zip
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unzip android-ndk-r15c-linux-x86_64.zip
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android-ndk-r15c/build/tools/make_standalone_toolchain.py --api 21 --stl=libc++ --arch arm --install-dir /opt/android/tool32
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```
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## Build OpenSSL
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Best is to compile openssl from sources. Copying from your phone or elsewhere (don't!) ends up in misery.
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### Setup environment
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```
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cd /opt/android
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wget https://wiki.openssl.org/images/7/70/Setenv-android.sh
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fromdos Setenv-android.sh
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```
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Edit Setenv-android.sh:
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```
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_ANDROID_EABI="arm-linux-androideabi-4.9"
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_ANDROID_API="android-21"
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```
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Then:
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```
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export ANDROID_NDK_ROOT=/opt/android/android-ndk-r15c
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. ./Setenv-android.sh
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```
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and ignore error about FIPS_SIG.
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### Download and build OpenSSL
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```
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wget https://github.com/openssl/openssl/archive/OpenSSL_1_0_2l.tar.gz
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tar xfz OpenSSL_1_0_2l.tar.gz
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cd openssl-OpenSSL_1_0_2l/
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perl -pi -e 's/install: all install_docs install_sw/install: install_docs install_sw/g' Makefile.org
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./config shared no-ssl2 no-ssl3 no-comp no-hw no-engine --openssldir=/opt/android/openssl/android-21/
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make depend
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# Make sure we don't get versioned .so which Android can't deal with
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make CALC_VERSIONS="SHLIB_COMPAT=; SHLIB_SOVER=" MAKE="make -e" all
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mkdir -p /opt/android/openssl/android-21/lib
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echo "place-holder make target for avoiding symlinks" >> /opt/android/openssl/android-21/lib/link-shared
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make SHLIB_EXT=.so install_sw
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```
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### Make symlinks
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```
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cd /opt/android/tool32/sysroot/usr/include
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ln -s ../../../../openssl/android-21/include/openssl
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cd /opt/android/tool32/sysroot/usr/lib
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ln -s ../../../../openssl/android-21/lib/libssl.so
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ln -s ../../../../openssl/android-21/lib/libcrypto.so
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```
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## Build Boost
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```
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cd /opt/android
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https://sourceforge.net/projects/boost/files/boost/1.64.0/boost_1_64_0.tar.gz/download -O boost_1_64_0.tar.gz
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tar xfz boost_1_64_0.tar.gz
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(cd boost_1_64_0; ./bootstrap.sh)
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```
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The NDK r15c above gives errors about fsetpos and fgetpos not found(!?!), so we "just" comment them out in the include file:
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`nano /opt/android/tool32/include/c++/4.9.x/cstdio` (`//using ::fgetpos`, `//using ::fsetpos`)
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Then:
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```
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export PATH=/opt/android/tool32/arm-linux-androideabi/bin:/opt/android/tool32/bin:$PATH
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./b2 --build-type=minimal link=static runtime-link=static --with-chrono --with-date_time --with-filesystem --with-program_options --with-regex --with-serialization --with-system --with-thread --build-dir=android32 --stagedir=android32 toolset=clang threading=multi threadapi=pthread target-os=android stage
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```
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## And finally: Build Monero
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```
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cd /opt/android
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git clone https://github.com/monero-project/monero
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cd monero
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# <patch monero code as needed>
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mkdir -p build/release.android32
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cd build/release.android32
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# only if not set already set
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export PATH=/opt/android/tool32/arm-linux-androideabi/bin:/opt/android/tool32/bin:$PATH
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CC=clang CXX=clang++ cmake -D BUILD_TESTS=OFF -D ARCH="armv7-a" -D STATIC=ON -D BUILD_64=OFF -D CMAKE_BUILD_TYPE=release -D ANDROID=true -D BUILD_TAG="android" -D BOOST_ROOT=/opt/android/boost_1_64_0 -D BOOST_LIBRARYDIR=/opt/android/boost_1_64_0/android32/lib -D OPENSSL_ROOT_DIR=/opt/android/openssl/android-21 -D CMAKE_POSITION_INDEPENDENT_CODE:BOOL=true ../..
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make
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find . -name '*.a' -exec cp '{}' lib \;
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```
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Ignore the warning from the last command - all static libraries are now in `lib`.
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# Bringing it all together
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- Copy all .a libraries into the appropriate `external-libs` folders.
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- Copy `/opt/android/monero/src/wallet/wallet2_api.h` into `external-libs/monero/include`
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