Build requirement to cross build to Android.
Create a profile for cross building and including this package:
android_profile
include(default)
[settings]
os=Android
os.api_level=21
compiler=clang
compiler.version=7.0
arch=armv7
[build_requires]
android-ndk/r18@theodelrieu/testing
Go to your project and cross-build your dependency tree with this toolchain:
conan install . --profile android_profile --build missing