irengrig 91ba4441d2 Register shell toolchain implementations in the correct order and allow customization (#214) ... * Register shell toolchain implementations in the correct order so that the default implementation is the last * Refactor shell toolchain to allow users register custom shell toolchains. - define your own shell toolchain file(s) by copying @rules_foreign_cc//tools/build_defs/shell_toolchain/toolchains/impl:linux_commands.bzl, and modifying the methods. - create a mapping: a list of ToolchainMapping with the mappings between created file(s) and execution or/and target platform constraints. - in the BUILD file of some package, call "register_mappings" macro from "@rules_foreign_cc//tools/build_defs/shell_toolchain/toolchains:defs.bzl", passing the mappings and toolchain_type_ = "@rules_foreign_cc//tools/build_defs/shell_toolchain/toolchains:shell_commands" - in the WORKSPACE file of your main repository, when you initialize rules_foreign_cc, pass the mappings and the package, in which BUILD file you called "register_mappings" macro * Correct typo		2019-01-31 15:11:28 +01:00
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build_defs	Register shell toolchain implementations in the correct order and allow customization (#214)	2019-01-31 15:11:28 +01:00