README: Document NDK/SDK requirements.

diff --git a/cross-compile/android/README b/cross-compile/android/README
index 76e14464fe9f62e2073740ccba46a094bab68479..1b86c45eb47d6416c8fc6284468749e55a19299d 100644 (file)
--- a/cross-compile/android/README
+++ b/cross-compile/android/README
@@ -20,7 +20,14 @@ Requirements
  - make
  - git
  - pkg-config (>= 0.22)
- - Android cross-compile toolchain
+ - Android NDK (tested: r10c)
+   - Android cross-compile toolchain (tested: arm-linux-androideabi-4.9)
+     Create it via:
+     ./build/tools/make-standalone-toolchain.sh \
+       --platform=android-16 \
+       --toolchain=arm-linux-androideabi-4.9 \
+       --install-dir=$HOME/android/android-arm-toolchain
+ - Android SDK (tested: r23.0.2)
 
 
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