commit | e4835fa079784f4b82b8dc973b660f7ac5779356 | [log] [tgz] |
---|---|---|
author | Jiyong Park <jiyong@google.com> | Fri Aug 06 20:00:52 2021 +0900 |
committer | Jiyong Park <jiyong@google.com> | Fri Aug 06 20:00:52 2021 +0900 |
tree | 5bd0a26dd62a158dcf3f3a408c207f65d50ce8f4 | |
parent | ee0dd9379039bd6c02fe4f89067938af7784d0aa [diff] |
Remove ndk_platform backend. Use the ndk backend. The ndk_platform backend will soon be deprecated because the ndk backend can serve the same purpose. This is to eliminate the confusion about having two variants (ndk and ndk_platform) for the same ndk backend. Bug: 161456198 Test: m Change-Id: Icc9af3798ac89742fa56b1cb37d8116d99b4a9c2
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