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rules_foreign_cc/tools/build_defs/boost_build.bzl

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""" Rule for building Boost from sources. """
load(
"//tools/build_defs:framework.bzl",
"CC_EXTERNAL_RULE_ATTRIBUTES",
"cc_external_rule_impl",
"create_attrs",
)
load("//tools/build_defs:detect_root.bzl", "detect_root")
def _boost_build(ctx):
attrs = create_attrs(
ctx.attr,
configure_name = "BuildBoost",
create_configure_script = _create_configure_script,
make_commands = ["./b2 install {} --prefix=.".format(" ".join(ctx.attr.user_options))],
)
return cc_external_rule_impl(ctx, attrs)
def _create_configure_script(configureParameters):
ctx = configureParameters.ctx
root = detect_root(ctx.attr.lib_source)
return "\n".join([
"cd $INSTALLDIR",
"##copy_dir_contents_to_dir## $$EXT_BUILD_ROOT$$/{}/. .".format(root),
"./bootstrap.sh {}".format(" ".join(ctx.attr.bootstrap_options)),
])
def _attrs():
attrs = dict(CC_EXTERNAL_RULE_ATTRIBUTES)
attrs.update({
# any additional flags to pass to bootstrap.sh
"bootstrap_options": attr.string_list(mandatory = False),
# any additional flags to pass to b2
"user_options": attr.string_list(mandatory = False),
})
return attrs
""" Rule for building Boost. Invokes bootstrap.sh and then b2 install.
Attributes:
boost_srcs - target with the boost sources
"""
boost_build = rule(
attrs = _attrs(),
fragments = ["cpp"],
output_to_genfiles = True,
implementation = _boost_build,
toolchains = [
"@rules_foreign_cc//tools/build_defs/shell_toolchain/toolchains:shell_commands",
"@bazel_tools//tools/cpp:toolchain_type",
],
)