""" 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", ], )