CC toolchain error occurs when building on linux with targets that are only compatible with MacOS

[cgrindel]

Reproduction

The following error occurs on linux if a target is marked as only being compatible with MacOS and the targets that depend on that target are not marked as such.

ERROR: /home/chuck/.cache/bazel/_bazel_chuck/1356082df8f6e9e7706552f3fc65582d/external/bazel_tools/tools/cpp/BUILD:58:19: in cc_toolchain_alias rule @bazel_tools//tools/cpp:current_cc_toolchain: 
Traceback (most recent call last):
        File "/virtual_builtins_bzl/common/cc/cc_toolchain_alias.bzl", line 26, column 48, in _impl
        File "/virtual_builtins_bzl/common/cc/cc_helper.bzl", line 219, column 17, in _find_cpp_toolchain
Error in fail: Unable to find a CC toolchain using toolchain resolution. Target: @@bazel_tools//tools/cpp:current_cc_toolchain, Platform: @@apple_support~1.11.1//platforms:darwin_x86_64, Exec platform: @@loca
l_config_platform//:host
ERROR: /home/chuck/.cache/bazel/_bazel_chuck/1356082df8f6e9e7706552f3fc65582d/external/bazel_tools/tools/cpp/BUILD:58:19: Analysis of target '@bazel_tools//tools/cpp:current_cc_toolchain' failed
ERROR: Analysis of target '//Sources/PrintObjcVersion:PrintObjcVersion' failed; build aborted: Analysis failed

[keith]

fixed with --incompatible_disable_objc_library_transition, so I guess it has something to do with that transition. that is flipped @ head