wrapper_clang should be compiled with DEVELOPER_DIR in the environment

[brentleyjones]

Description of the problem / feature request:

wrapper_clang should pass DEVELOPER_DIR to xcrun invocation. Without this, xcode-select needs to be set globally, which impacts multiple workspaces.

bazel/tools/cpp/osx_cc_configure.bzl

Lines 114 to 127 in 82e6b6a

	xcrun_result = repository_ctx.execute([
	"env",
	"-i",
	"xcrun",
	"--sdk",
	"macosx",
	"clang",
	"-mmacosx-version-min=10.9",
	"-std=c++11",
	"-lc++",
	"-o",
	"wrapped_clang",
	wrapped_clang_src_path,
	], 30)

When using DEVELOPER_DIR as an --action_env to set the Xcode version to compile with, the current behavior results in cache misses that involve wrapper_clang, since different versions of Xcode could have been used to compile it.

Bugs: what's the simplest, easiest way to reproduce this bug? Please provide a minimal example if possible.

wrapper_clang being compiled with the correct version of Xcode, based on --action_env=DEVELOPER_DIR`.

What operating system are you running Bazel on?

macOS 10.15.5

What's the output of bazel info release?

release 3.3.0

Have you found anything relevant by searching the web?

#11635
#8902

[keith]

Dup of #8902

[brentleyjones]

Thanks! Closing.

[brentleyjones]

@keith This isn't a 100% dup of #8902, so I'm reopening it, and addressing it with #11719.