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pigweed / pigweed / rules_libusb / a9de1b5681027046dffb803a791ea32f90db6d69
commita9de1b5681027046dffb803a791ea32f90db6d69[log] [tgz]
authorArmando Montanez <amontanez@google.com>Fri Mar 14 15:10:52 2025 -0700
committerCQ Bot Account <pigweed-scoped@luci-project-accounts.iam.gserviceaccount.com>Fri Mar 14 15:10:52 2025 -0700
tree4062233526292f1b71bf2956fce32541ec7e7629
parent1d1e40d428166a18fc75bfd250bf8cb048b215ac [diff]
Fix Windows link issues

Fixes a couple Windows link issues:

* User32.Lib was missing.
* Due to a missing interface library property, libusb would not properly
  link unless added to dynamic_deps of every cc_binary that used it when
  --@rules_libusb//:force_dynamic_linkage=True.

Also renames the underlying cc_shared_library so the produced artifacts
have less-surprising names.

Bug: b/347353308
Change-Id: I61a670d7e91836c5b742fe046baa619410de6d06
Reviewed-on: https://pigweed-review.googlesource.com/c/pigweed/rules_libusb/+/276016
Reviewed-by: Ted Pudlik <tpudlik@google.com>
Lint: Lint 🤖 <android-build-ayeaye@system.gserviceaccount.com>
Commit-Queue: Auto-Submit <auto-submit@pigweed-service-accounts.iam.gserviceaccount.com>
Pigweed-Auto-Submit: Armando Montanez <amontanez@google.com>
Presubmit-Verified: CQ Bot Account <pigweed-scoped@luci-project-accounts.iam.gserviceaccount.com>
1 file changed
tree: 4062233526292f1b71bf2956fce32541ec7e7629
  1. examples/
  2. include/
  3. linux/
  4. .bazelignore
  5. .gitignore
  6. AUTHORS
  7. BUILD.bazel
  8. CONTRIBUTING.md
  9. extensions.bzl
  10. libusb.BUILD
  11. LICENSE
  12. MODULE.bazel
  13. OWNERS
  14. README.md
README.md

rules_libusb

A small wrapper Bazel module that builds libusb from sources. Supports Windows, macOS, and Linux.

Getting Started

At this time, rules_libusb only supports bzlmod projects. Legacy WORKSPACE projects are not explicitly supported.

blzmod

Add rules_libusb to your MODULE.bazel file:

bazel_dep(name = "rules_libusb", version="0.1.0-rc1")

libusb = use_extension("@rules_libusb//:extensions.bzl", "libusb")
# Versioning constraints are optional.
libusb.source_release(min_version = "1.0.27")
use_repo(libusb, "libusb")

Note: source_release constraints follow bzlmod behavior of minimal version selection.

Then add to the tool that requires libusb:

cc_binary(
    name = "my_tool",
    srcs = ["main.cpp"],
    deps = ["@libusb//:libusb"],
)

Linking libusb

The libusb build file offers two targets to help guide link behavior:

  • //:libusb: The generic cc_library for libusb. Most build targets should just use this.
  • //:libusb_dynamic: The actual libusb dynamic/shared library (e.g. libusb-1.0.so).

By default, @libusb//:libusb will always dynamically link. This can be disabled by toggling the flag that controls this:

bazel build //... --@rules_libusb//:force_dynamic_linkage=False

When @rules_libusb//:force_dynamic_linkage is disabled, the link behavior is fully controlled by your build system, and can be controlled on a per-binary basis by specifying dynamic_deps on build targets that require dynamic linkage of libusb:

cc_binary(
    name = "my_tool",
    srcs = ["main.cpp"],
    deps = ["@libusb//:libusb"],
    dynamic_deps = ["@libusb//:libusb_dynamic"],
)

Building this repo

To build this repo, run:

bazel build @libusb//:libusb