From d3c7a2279d67e70fae904f862bc7ae48a6347fd3 Mon Sep 17 00:00:00 2001
From: buildbreaker2021 <88653395+buildbreaker2021@users.noreply.github.com>
Date: Tue, 18 Jul 2023 10:09:37 +0200
Subject: [PATCH] Revert "Add well-known compiler `config_setting`s"

---
 cc/compiler/BUILD               | 71 ---------------------------------
 tests/compiler_settings/BUILD   | 32 ---------------
 tests/compiler_settings/main.cc | 22 ----------
 3 files changed, 125 deletions(-)
 delete mode 100644 cc/compiler/BUILD
 delete mode 100644 tests/compiler_settings/BUILD
 delete mode 100644 tests/compiler_settings/main.cc

diff --git a/cc/compiler/BUILD b/cc/compiler/BUILD
deleted file mode 100644
index fade580..0000000
--- a/cc/compiler/BUILD
+++ /dev/null
@@ -1,71 +0,0 @@
-# Copyright 2023 The Bazel Authors. All rights reserved.
-#
-# Licensed under the Apache License, Version 2.0 (the "License");
-# you may not use this file except in compliance with the License.
-# You may obtain a copy of the License at
-#
-#    http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
-
-"""Config settings for compilers identified by Bazel.
-
-Targets that require compiler-specific flags can use the config_settings defined
-in this package in their select() statements.
-
-*Note*: Before Bazel 6, gcc on Linux and clang on macOS would not match their
-specific config_setting, but only the fallback case of a select expression.
-
-Toolchains not shipped with Bazel are encouraged to use the same names to
-identify compilers as used below, but this is not enforced.
-
-Example:
-
-  cc_binary(
-    name = "foo",
-    srcs = ["foo.cc"],
-    copts = select({
-        "@rules_cc//cc/compiler:gcc": [...],
-        "@rules_cc//cc/compiler:clang": [...],
-        "@rules_cc//cc/compiler:msvc-cl": [...],
-        # Fallback case for an undetected compiler.
-        "//conditions:default": [...],
-    }),
-  )
-
-If multiple targets use the same set of conditionally enabled flags, this can be
-simplified by extracting the select expression into a Starlark constant.
-"""
-
-package(default_visibility = ["//visibility:public"])
-
-licenses(["notice"])  # Apache 2.0
-
-config_setting(
-    name = "clang",
-    flag_values = {"@bazel_tools//tools/cpp:compiler": "clang"},
-)
-
-config_setting(
-    name = "clang-cl",
-    flag_values = {"@bazel_tools//tools/cpp:compiler": "clang-cl"},
-)
-
-config_setting(
-    name = "gcc",
-    flag_values = {"@bazel_tools//tools/cpp:compiler": "gcc"},
-)
-
-config_setting(
-    name = "mingw-gcc",
-    flag_values = {"@bazel_tools//tools/cpp:compiler": "mingw-gcc"},
-)
-
-config_setting(
-    name = "msvc-cl",
-    flag_values = {"@bazel_tools//tools/cpp:compiler": "msvc-cl"},
-)
diff --git a/tests/compiler_settings/BUILD b/tests/compiler_settings/BUILD
deleted file mode 100644
index bb5ed83..0000000
--- a/tests/compiler_settings/BUILD
+++ /dev/null
@@ -1,32 +0,0 @@
-# Copyright 2023 The Bazel Authors. All rights reserved.
-#
-# Licensed under the Apache License, Version 2.0 (the "License");
-# you may not use this file except in compliance with the License.
-# You may obtain a copy of the License at
-#
-#    http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
-
-load("//cc:defs.bzl", "cc_binary")
-
-licenses(["notice"])
-
-cc_binary(
-    name = "main",
-    srcs = ["main.cc"],
-    local_defines = select(
-        {
-            "//cc/compiler:clang": ["COMPILER=clang"],
-            "//cc/compiler:clang-cl": ["COMPILER=clang-cl"],
-            "//cc/compiler:gcc": ["COMPILER=gcc"],
-            "//cc/compiler:mingw-gcc": ["COMPILER=mingw-gcc"],
-            "//cc/compiler:msvc-cl": ["COMPILER=msvc-cl"],
-        },
-        no_match_error = "Compiler not detected by Bazel",
-    ),
-)
diff --git a/tests/compiler_settings/main.cc b/tests/compiler_settings/main.cc
deleted file mode 100644
index 35b088c..0000000
--- a/tests/compiler_settings/main.cc
+++ /dev/null
@@ -1,22 +0,0 @@
-// Copyright 2023 The Bazel Authors. All rights reserved.
-//
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-//
-//    http://www.apache.org/licenses/LICENSE-2.0
-//
-// Unless required by applicable law or agreed to in writing, software
-// distributed under the License is distributed on an "AS IS" BASIS,
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-// See the License for the specific language governing permissions and
-// limitations under the License.
-
-#include <iostream>
-
-#define STRINGIFY(x) #x
-#define TO_STRING(x) STRINGIFY(x)
-
-int main() {
-  std::cout << "Hello, " << TO_STRING(COMPILER) << "!" << std::endl;
-}