forked from OSchip/llvm-project
44 lines
1.3 KiB
Python
44 lines
1.3 KiB
Python
# This file is licensed under the Apache License v2.0 with LLVM Exceptions.
|
|
# See https://llvm.org/LICENSE.txt for license information.
|
|
# SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
|
|
|
|
"""Repository rule to statically link against the Vulkan SDK.
|
|
|
|
Requires installing the Vulkan SDK from https://vulkan.lunarg.com/.
|
|
|
|
If the Vulkan SDK is not installed, this generates an empty rule and you may
|
|
encounter linker errors like `error: undefined reference to 'vkCreateInstance'`.
|
|
"""
|
|
|
|
def _impl(repository_ctx):
|
|
if "VULKAN_SDK" in repository_ctx.os.environ:
|
|
sdk_path = repository_ctx.os.environ["VULKAN_SDK"]
|
|
repository_ctx.symlink(sdk_path, "vulkan-sdk")
|
|
|
|
repository_ctx.file("BUILD", """
|
|
cc_library(
|
|
name = "sdk",
|
|
srcs = select({
|
|
"@bazel_tools//src/conditions:windows": [
|
|
"vulkan-sdk/Lib/vulkan-1.lib"
|
|
],
|
|
"//conditions:default": [
|
|
"vulkan-sdk/lib/libvulkan.so.1",
|
|
],
|
|
}),
|
|
visibility = ["//visibility:public"],
|
|
)""")
|
|
else:
|
|
# Empty rule. Will fail to link for just targets that use Vulkan.
|
|
repository_ctx.file("BUILD", """
|
|
cc_library(
|
|
name = "sdk",
|
|
srcs = [],
|
|
visibility = ["//visibility:public"],
|
|
)""")
|
|
|
|
vulkan_sdk_setup = repository_rule(
|
|
implementation = _impl,
|
|
local = True,
|
|
)
|