commit | 0934e6dd48c80a8bd0eb706f270e620f42a8269a | [log] [tgz] |
---|---|---|
author | Xin Li <delphij@google.com> | Fri Apr 01 20:33:09 2022 +0000 |
committer | Xin Li <delphij@google.com> | Fri Apr 01 20:33:09 2022 +0000 |
tree | fc66c1d88a92e272fd070bfb625a08a60d917e5f | |
parent | 08396f0c12d6381438abfe2d160cb8b0bdce9ad3 [diff] | |
parent | 14c223f9a8f7785e6876f4fd83aa0cab1fb0d1bd [diff] |
Merge Android 12 QPR3 ab/8391262 Bug: 226662282 Merged-In: I267160d5d3bbcd97a38fbaafdbc704ecc4f0a959 Change-Id: I57a8c65c7982f1eac78f5dfe97e02cff8abd1c1e
Full documentation can be found here: https://source.android.com/devices/architecture/hidl/
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.
m hidl-gen
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 vendor.foo:vendor/foo/interfaces vendor.foo.nfc@1.0
See update-makefiles-helper.sh and update-all-google-makefiles.sh for examples of how to generate HIDL makefiles (using the -Landroidbp option).
NOTE: When using the -Landroidbp option, you can force generated modules to be installed in
/system_ext
rather than other partition by putting a marker file.hidl_for_system_ext
alongside*.hal
files.
NOTE: You can also install the vendor variant of the generated modules to be installed in
/odm
rather than/vendor
by putting a marker file.hidl_for_odm
alongside*.hal
files.
This is a helper tool to convert C headers to valid .hal files.
m c2hal && c2hal -h