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Update INSTALL.md

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Add Android build instructions
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Igor Cota 2018-02-26 12:48:57 +01:00 committed by Christian Decker
parent b7ed5670d5
commit 642cff84ea
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@ -99,3 +99,32 @@ $ nix-shell -Q -p gdb sqlite autoconf git clang libtool gmp sqlite autoconf \
autogen automake 'python3.withPackages (p: [p.bitcoinlib])' \
valgrind asciidoc --run make
```
To Cross-compile for Android
--------------------
Make a standalone toolchain as per https://developer.android.com/ndk/guides/standalone_toolchain.html. For c-lightning you must target an API level of 24 or higher.
Depending on your toolchain location and target arch source env variables such as:
```
export PATH=$PATH:/path/to/android/toolchain/bin
# Change depending on target device arch
target_host=arm-linux-androideabi
export AR=$target_host-ar
export AS=$target_host-clang
export CC=$target_host-clang
export CXX=$target_host-clang++
export LD=$target_host-ld
export STRIP=$target_host-strip
```
Two makefile targets should not be cross-compiled so we specify a native CC:
```
make CC=clang clean ccan/tools/configurator/configurator
make clean -C ccan/ccan/cdump/tools && make CC=clang -C ccan/ccan/cdump/tools
```
Install the `qemu-user` package. This will allow you to properly configure the build for the target device environment. Build with:
```
BUILD=x86_64 HOST=arm-linux-androideabi make PIE=1 DEVELOPER=0 CONFIGURATOR_CC="arm-linux-androideabi-clang -static"
```