Not able to get context object on /dev/binder

[HauTranCong]

Hi Jeff Kim I'm following your instruction but there are some errors:

Build C/C++ binaries and libraries -- Could NOT find PkgConfig (missing: PKG_CONFIG_EXECUTABLE) -- The C compiler identification is Clang 14.0.0 -- The CXX compiler identification is Clang 14.0.0 -- Detecting C compiler ABI info -- Detecting C compiler ABI info - done -- Check for working C compiler: /usr/bin/clang - skipped -- Detecting C compile features -- Detecting C compile features - done -- Detecting CXX compiler ABI info -- Detecting CXX compiler ABI info - done -- Check for working CXX compiler: /usr/bin/clang++ - skipped -- Detecting CXX compile features -- Detecting CXX compile features - done -- Could NOT find FLEX (missing: FLEX_EXECUTABLE) -- Could NOT find BISON (missing: BISON_EXECUTABLE) CMake Error at CMakeLists.txt:397 (FLEX_TARGET): Unknown CMake command "FLEX_TARGET". -- Configuring incomplete, errors occurred!

Could you point me out what am I missing?

My kernel version: 5.16.5-051605-generic

Thank you in advanced!

[HauTranCong]

I already built successfully, but get some error like this when testing: ProcessState W 07-01 10:00:26 121150 121150 Not able to get context object on /dev/binder. ServiceManager E 07-01 10:00:26 121150 121150 Waiting 1s on context object on /dev/binder.

1. I mounted binderfs first:

   $ mkdir /dev/binderfs

2. Then install Anbox module refer to: https://github.com/anbox/anbox-modules

3. And the last one:

   $ mount -t binder binder /dev/binderfs

I was confused in this step: Create binder device file $ ./binder_device /dev/binderfs/binder-control binder $ chmod a+rw /dev/binderfs/binder

Binder has already allocated there, I try to delete then create new binder but there is nothing change.

[hiking90]

If you already has binder device, you don't need to create it again. My guide is based on pure Linux environment. So, the creation of binder device was necessary,