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use http_archive to download toolchain archives #89

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use http_archive to download toolchain archives #89

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62 changes: 43 additions & 19 deletions deps.bzl
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Original file line number Diff line number Diff line change
@@ -1,22 +1,17 @@
"""deps.bzl"""

load("@bazel_tools//tools/build_defs/repo:http.bzl", "http_archive")
load("@toolchains_arm_gnu//:version.bzl", "latest_version")
load("@toolchains_arm_gnu//toolchain:toolchain.bzl", "tools")
load("@toolchains_arm_gnu//toolchain/archives:aarch64_none_elf.bzl", "AARCH64_NONE_ELF")
load("@toolchains_arm_gnu//toolchain/archives:aarch64_none_linux_gnu.bzl", "AARCH64_NONE_LINUX_GNU")
load("@toolchains_arm_gnu//toolchain/archives:arm_none_eabi.bzl", "ARM_NONE_EABI")
load("@toolchains_arm_gnu//toolchain/archives:arm_none_linux_gnueabihf.bzl", "ARM_NONE_LINUX_GNUEABIHF")

def _arm_gnu_cross_hosted_platform_specific_repo_impl(repository_ctx):
"""Defines a host-specific repository for the ARM GNU toolchain."""
repository_ctx.download_and_extract(
sha256 = repository_ctx.attr.sha256,
url = repository_ctx.attr.url,
stripPrefix = repository_ctx.attr.strip_prefix,
)

def _arm_gnu_build_file_impl(repository_ctx):
"""Generates the BUILD file with template substitutions."""
repository_ctx.template(
"BUILD.bazel",
"file",
Label("@toolchains_arm_gnu//toolchain:templates/compiler.BUILD"),
substitutions = {
"%toolchain_prefix%": repository_ctx.attr.toolchain_prefix,
Expand All @@ -26,23 +21,52 @@ def _arm_gnu_cross_hosted_platform_specific_repo_impl(repository_ctx):
},
)

for patch in repository_ctx.attr.patches:
repository_ctx.patch(patch, strip = 1)
repository_ctx.file(
"BUILD.bazel",
content = """
exports_files(["file"])
""",
)

arm_gnu_cross_hosted_platform_specific_repo = repository_rule(
implementation = _arm_gnu_cross_hosted_platform_specific_repo_impl,
_arm_gnu_build_file = repository_rule(
implementation = _arm_gnu_build_file_impl,
attrs = {
"sha256": attr.string(mandatory = True),
"url": attr.string(mandatory = True),
"toolchain_prefix": attr.string(mandatory = True),
"version": attr.string(mandatory = True),
"strip_prefix": attr.string(),
"patches": attr.label_list(),
"tools": attr.string_list(default = tools),
"exec_compatible_with": attr.string_list(),
"tools": attr.string_list(mandatory = True),
},
)

def arm_gnu_cross_hosted_platform_specific_repo(
*,
name,
sha256,
url,
toolchain_prefix,
strip_prefix = "",
version,
patches = [],
tools = tools,
exec_compatible_with = []): # this last arg is unused
"""Defines a host-specific repository for the ARM GNU toolchain."""

_arm_gnu_build_file(
name = name + "_build_file",
toolchain_prefix = toolchain_prefix,
version = version,
tools = tools,
)

http_archive(
name = name,
sha256 = sha256,
urls = [url],
strip_prefix = strip_prefix,
patches = patches,
patch_args = ["-p1"],
build_file = "@" + name + "_build_file//:file",
)

def _arm_gnu_toolchain_repo_impl(repository_ctx):
"""Defines the top-level toolchain repository."""
repository_ctx.template(
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