Export of internal Abseil changes.

--
788c948f698afe5998738cbb40b0629668640d73 by Derek Mauro <dmauro@google.com>:

Add an empty raw_logging_internal library. The raw_logging sources
will eventually migrate here.

This target will only contain internal sources. Abseil compatibility
guidelines require users not depend on internals.
https://abseil.io/about/compatibility

PiperOrigin-RevId: 260712817

--
8ea947ec54f47fb02e97597d243cb63aa4c5fe0b by Abseil Team <absl-team@google.com>:

Fixed an incorrect version number test for optional,etc. availability
in iOS. Added tests for watchOS and tvOS.

PiperOrigin-RevId: 260490390

--
53af0544277dc3020b81d16ce110e7bc89f5cf6e by Jorg Brown <jorg@google.com>:

Test the error-string path a bit more.

PiperOrigin-RevId: 260175886
GitOrigin-RevId: 788c948f698afe5998738cbb40b0629668640d73
Change-Id: I366b73331857dc5a1db843b650c2ba27a69a141e

absl/base/BUILD.bazel

@@ -46,6 +46,15 @@ cc_library(
     deps = [":core_headers"],
 )
 
+cc_library(
+    name = "raw_logging_internal",
+    copts = ABSL_DEFAULT_COPTS,
+    linkopts = ABSL_DEFAULT_LINKOPTS,
+    visibility = [
+        "//absl:__subpackages__",
+    ],
+)
+
 cc_library(
     name = "spinlock_wait",
     srcs = [

absl/base/CMakeLists.txt

@@ -34,7 +34,14 @@ absl_cc_library(
     absl::core_headers
   COPTS
     ${ABSL_DEFAULT_COPTS}
-) 
+)
+
+absl_cc_library(
+  NAME
+    raw_logging_internal
+  COPTS
+    ${ABSL_DEFAULT_COPTS}
+)
 
 absl_cc_library(
   NAME

absl/base/config.h

@@ -375,12 +375,17 @@
 // https://github.com/abseil/abseil-cpp/issues/207 and
 // https://developer.apple.com/documentation/xcode_release_notes/xcode_10_release_notes
 // libc++ spells out the availability requirements in the file
-// llvm-project/libcxx/include/__config.
+// llvm-project/libcxx/include/__config via the #define
+// _LIBCPP_AVAILABILITY_BAD_OPTIONAL_ACCESS.
 #if defined(__APPLE__) && defined(_LIBCPP_VERSION) && \
   ((defined(__ENVIRONMENT_MAC_OS_X_VERSION_MIN_REQUIRED__) && \
    __ENVIRONMENT_MAC_OS_X_VERSION_MIN_REQUIRED__ < 101400) || \
   (defined(__ENVIRONMENT_IPHONE_OS_VERSION_MIN_REQUIRED__) && \
-   __ENVIRONMENT_IPHONE_OS_VERSION_MIN_REQUIRED__ < 101200))
+   __ENVIRONMENT_IPHONE_OS_VERSION_MIN_REQUIRED__ < 120000) || \
+  (defined(__ENVIRONMENT_WATCH_OS_VERSION_MIN_REQUIRED__) && \
+   __ENVIRONMENT_WATCH_OS_VERSION_MIN_REQUIRED__ < 120000) || \
+  (defined(__ENVIRONMENT_TV_OS_VERSION_MIN_REQUIRED__) && \
+   __ENVIRONMENT_TV_OS_VERSION_MIN_REQUIRED__ < 50000))
 #define ABSL_INTERNAL_APPLE_CXX17_TYPES_UNAVAILABLE 1
 #else
 #define ABSL_INTERNAL_APPLE_CXX17_TYPES_UNAVAILABLE 0