conan: C++ headers are not found when cross-building for Android

Hi,

I must have missed something obvious, but I’ve been unable to build a sample C++ code today.

I’m using this profile:

[build_requires]
android-toolchain/r16@theo/stable

[settings]
os=Android
arch=armv8
os.api_level=27
compiler=clang
compiler.version=5.0
compiler.libcxx=libc++
build_type=Release

[options]
[scopes]
[env]

The compiler complains about <iostream> being missing…

Shouldn’t the android-toolchain include directories be available to other recipes? The self.cpp_info.cflags are present though, I do not understand why the include dirs are not seen on the command line.