Taken from https://github.com/abseil/abseil-cpp/pull/884

From 8ef49c10f419ff8e6e3865c06ea6dfe36be642ff Mon Sep 17 00:00:00 2001
From: Pascal Muetschard <pmuetschard@google.com>
Date: Mon, 11 Jan 2021 15:17:06 -0800
Subject: [PATCH] Don't assume Windows means MSVC in the bazel BUILD files.

When selecting the compiler flags, use the compiler setting, rather than
the platform setting, to detect if MSVC flags are required.
---
 absl/BUILD.bazel                 | 24 ++++++++++++++++++++++++
 absl/base/BUILD.bazel            |  4 ++--
 absl/copts/configure_copts.bzl   |  6 +++---
 absl/debugging/BUILD.bazel       |  8 ++++----
 absl/random/internal/BUILD.bazel |  6 +++---
 absl/synchronization/BUILD.bazel |  2 +-
 6 files changed, 37 insertions(+), 13 deletions(-)
diff --git a/absl/BUILD.bazel b/absl/BUILD.bazel
index 0b772df..651b3f4 100644
--- a/absl/BUILD.bazel
+++ b/absl/BUILD.bazel
@@ -28,6 +28,30 @@ create_llvm_config(
     visibility = [":__subpackages__"],
 )
 
+config_setting(
+    name = "msvc_compiler",
+    flag_values = {
+        "@bazel_tools//tools/cpp:compiler": "msvc-cl",
+    },
+    visibility = [":__subpackages__"],
+)
+
+config_setting(
+    name = "clang_cl_compiler",
+    flag_values = {
+        "@bazel_tools//tools/cpp:compiler": "clang-cl",
+    },
+    visibility = [":__subpackages__"],
+)
+
+alias(
+    name = "msvc_compat_compiler",
+    actual = select({
+        ":clang_cl_compiler": ":clang_cl_compiler",
+        "//conditions:default": ":msvc_compiler",
+    })
+)
+
 config_setting(
     name = "osx",
     constraint_values = [
diff --git a/absl/base/BUILD.bazel b/absl/base/BUILD.bazel
index 9d96abe..817c06a 100644
--- a/absl/base/BUILD.bazel
+++ b/absl/base/BUILD.bazel
@@ -160,7 +160,7 @@ cc_library(
     ],
     copts = ABSL_DEFAULT_COPTS,
     linkopts = select({
-        "//absl:windows": [],
+        "//absl:msvc_compat_compiler": [],
         "//absl:wasm": [],
         "//conditions:default": ["-pthread"],
     }) + ABSL_DEFAULT_LINKOPTS,
@@ -220,7 +220,7 @@ cc_library(
     ],
     copts = ABSL_DEFAULT_COPTS,
     linkopts = select({
-        "//absl:windows": [
+        "//absl:msvc_compat_compiler": [
             "-DEFAULTLIB:advapi32.lib",
         ],
         "//absl:wasm": [],
diff --git a/absl/copts/configure_copts.bzl b/absl/copts/configure_copts.bzl
index ff9a5ea..5d00332 100644
--- a/absl/copts/configure_copts.bzl
+++ b/absl/copts/configure_copts.bzl
@@ -22,7 +22,7 @@ load(
 )
 
 ABSL_DEFAULT_COPTS = select({
-    "//absl:windows": ABSL_MSVC_FLAGS,
+    "//absl:msvc_compat_compiler": ABSL_MSVC_FLAGS,
     "//absl:llvm_compiler": ABSL_LLVM_FLAGS,
     "//conditions:default": ABSL_GCC_FLAGS,
 })
@@ -30,13 +30,13 @@ ABSL_DEFAULT_COPTS = select({
 # in absence of modules (--compiler=gcc or -c opt), cc_tests leak their copts
 # to their (included header) dependencies and fail to build outside absl
 ABSL_TEST_COPTS = ABSL_DEFAULT_COPTS + select({
-    "//absl:windows": ABSL_MSVC_TEST_FLAGS,
+    "//absl:msvc_compat_compiler": ABSL_MSVC_TEST_FLAGS,
     "//absl:llvm_compiler": ABSL_LLVM_TEST_FLAGS,
     "//conditions:default": ABSL_GCC_TEST_FLAGS,
 })
 
 ABSL_DEFAULT_LINKOPTS = select({
-    "//absl:windows": ABSL_MSVC_LINKOPTS,
+    "//absl:msvc_compat_compiler": ABSL_MSVC_LINKOPTS,
     "//conditions:default": [],
 })
 
diff --git a/absl/debugging/BUILD.bazel b/absl/debugging/BUILD.bazel
index 86faac9..d0984b9 100644
--- a/absl/debugging/BUILD.bazel
+++ b/absl/debugging/BUILD.bazel
@@ -66,7 +66,7 @@ cc_library(
     ],
     copts = ABSL_DEFAULT_COPTS,
     linkopts = ABSL_DEFAULT_LINKOPTS + select({
-        "//absl:windows": ["-DEFAULTLIB:dbghelp.lib"],
+        "//absl:msvc_compat_compiler": ["-DEFAULTLIB:dbghelp.lib"],
         "//conditions:default": [],
     }),
     deps = [
@@ -86,11 +86,11 @@ cc_test(
     name = "symbolize_test",
     srcs = ["symbolize_test.cc"],
     copts = ABSL_TEST_COPTS + select({
-        "//absl:windows": ["/Z7"],
+        "//absl:msvc_compat_compiler": ["/Z7"],
         "//conditions:default": [],
     }),
     linkopts = ABSL_DEFAULT_LINKOPTS + select({
-        "//absl:windows": ["/DEBUG"],
+        "//absl:msvc_compat_compiler": ["/DEBUG"],
         "//conditions:default": [],
     }),
     deps = [
@@ -148,7 +148,7 @@ cc_test(
     srcs = ["failure_signal_handler_test.cc"],
     copts = ABSL_TEST_COPTS,
     linkopts = select({
-        "//absl:windows": [],
+        "//absl:msvc_compat_compiler": [],
         "//absl:wasm": [],
         "//conditions:default": ["-pthread"],
     }) + ABSL_DEFAULT_LINKOPTS,
diff --git a/absl/random/internal/BUILD.bazel b/absl/random/internal/BUILD.bazel
index 8485e28..944f512 100644
--- a/absl/random/internal/BUILD.bazel
+++ b/absl/random/internal/BUILD.bazel
@@ -75,7 +75,7 @@ cc_library(
     ],
     copts = ABSL_DEFAULT_COPTS,
     linkopts = ABSL_DEFAULT_LINKOPTS + select({
-        "//absl:windows": ["-DEFAULTLIB:bcrypt.lib"],
+        "//absl:msvc_compat_compiler": ["-DEFAULTLIB:bcrypt.lib"],
         "//conditions:default": [],
     }),
     deps = [
@@ -98,7 +98,7 @@ cc_library(
     ],
     copts = ABSL_DEFAULT_COPTS,
     linkopts = select({
-        "//absl:windows": [],
+        "//absl:msvc_compat_compiler": [],
         "//absl:wasm": [],
         "//conditions:default": ["-pthread"],
     }) + ABSL_DEFAULT_LINKOPTS,
@@ -320,7 +320,7 @@ cc_library(
         "randen_hwaes.h",
     ],
     copts = ABSL_DEFAULT_COPTS + ABSL_RANDOM_RANDEN_COPTS + select({
-        "//absl:windows": [],
+        "//absl:msvc_compat_compiler": [],
         "//conditions:default": ["-Wno-pass-failed"],
     }),
     linkopts = ABSL_DEFAULT_LINKOPTS,
diff --git a/absl/synchronization/BUILD.bazel b/absl/synchronization/BUILD.bazel
index 4d4d680..b75bb42 100644
--- a/absl/synchronization/BUILD.bazel
+++ b/absl/synchronization/BUILD.bazel
@@ -89,7 +89,7 @@ cc_library(
     ],
     copts = ABSL_DEFAULT_COPTS,
     linkopts = select({
-        "//absl:windows": [],
+        "//absl:msvc_compat_compiler": [],
         "//absl:wasm": [],
         "//conditions:default": ["-pthread"],
     }) + ABSL_DEFAULT_LINKOPTS,