Clone this repo:
  1. 0d7b2bd Merge "HIDL Java: test exceptions for retry variant" by Treehugger Robot · 76 minutes ago master
  2. 163a3d0 HIDL Java: test exceptions for retry variant by Steven Moreland · 8 hours ago
  3. ca096dd Merge "hidl2aidl: use imported enum from other package" by Treehugger Robot · 30 hours ago
  4. 1a88a4a hidl2aidl: use imported enum from other package by Steven Moreland · 2 days ago
  5. dc9efe7 hidl_interface: disable SP-HAL fuzzers by Tri Vo · 3 days ago


Full documentation can be found here:

hidl-gen is a compiler for the HIDL (HAL Interface Design Language) which generates C++ and Java endpoints for RPC mechanisms. The main userspace libraries which this compiler uses can be found at system/libhidl.

1. Build

m hidl-gen

2. Run

Note that options for hidl-gen expected to be invoked by the build system are marked with ‘internal’ in the help menu.

hidl-gen -h

hidl-gen -o output -L c++-impl -r android.hardware:hardware/interfaces -r android.hidl:system/libhidl/transport android.hardware.nfc@1.0

Some defaults for package roots are also provided

hidl-gen -o output -L c++-impl android.hardware.nfc@1.0
hidl-gen -o output -L vts android.hardware.nfc@1.0
hidl-gen -L hash android.hardware.nfc@1.0

Example command for vendor project

hidl-gen -L c++-impl -r

See and for examples of how to generate HIDL makefiles (using the -Landroidbp option).


This is a helper tool to convert C headers to valid .hal files.

m c2hal && c2hal -h