Export of internal Abseil changes.

--
da04b8cd21f6225d71397471474d34a77df0efd6 by Jon Cohen <cohenjon@google.com>:

Don't use std::any, std::optional, std::variant, and friends on MacOS versions older than 10.14.

Although Xcode 10 includes those headers and makes the types available to use, according to https://developer.apple.com/documentation/xcode_release_notes/xcode_10_release_notes, on MacOS 10.13 and earlier use of any functions (std::get, for example) results in an error message to upgrade to MacOS 10.14.

This fixes https://github.com/abseil/abseil-cpp/issues/207.  See that issue for more information on the error generated.

PiperOrigin-RevId: 221844618

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1d99f77b4c60c5b0d7984f46e8ed63a3f969c635 by Jon Cohen <cohenjon@google.com>:

raw_hash_set_test is still flaky under gcc 4.8.  Since we now have the probe_test, we don't need the PerfectRatio tests.  Just remove them.

PiperOrigin-RevId: 221843042

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135cbb2a5d90963256518b3b59fe6710815e5dfa by Abseil Team <absl-team@google.com>:

Update absl/algorithm/CMakeLists.txt to use new functions
i.e. absl_cc_(library|test)

PiperOrigin-RevId: 221828348

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1a5abde4f17f998ae89d87155d59f982a70202d8 by Jon Cohen <cohenjon@google.com>:

Internal change

PiperOrigin-RevId: 221708245

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e03e031d4de39275989f695c768b0940cce1ff16 by Matt Armstrong <marmstrong@google.com>:

Log to FATAL in throw_delegate.h

ABSL_RAW_LOG(FATAL, ...) is guaranteed to abort.
Previously, the code was logging to ERROR and
calling abort() explicitly, which defeated any
integration with absl::raw_logging_internal::AbortHook().

These changes are limited to Abseil internal APIs.

PiperOrigin-RevId: 221696513

--
d13691523a3f9a5367fd1194cf9604bf4a969029 by Shahriar Rouf <nafi@google.com>:

Import of CCTZ from GitHub.

PiperOrigin-RevId: 221694877

--
f4044c56d44ba0ac2a9f218ed55f1b1f9e985eae by Abseil Team <absl-team@google.com>:

Update absl/base/CMakeLists.txt to use new functions
i.e. absl_cc_(library|test)

PiperOrigin-RevId: 221676669
GitOrigin-RevId: da04b8cd21f6225d71397471474d34a77df0efd6
Change-Id: If6621e10d096a39b6a056a072c2727a0df0b0620

1 files changed, 18 insertions, 3 deletions

diff --git a/absl/base/config.h b/absl/base/config.h
index ca089f6d060e..db4c45390222 100644
--- a/absl/base/config.h
+++ b/absl/base/config.h
@@ -365,6 +365,18 @@
 #error "absl endian detection needs to be set up for your compiler"
 #endif
 
+// MacOS 10.13 doesn't let you use <any>, <optional>, or <variant> even though
+// the headers exist and are publicly noted to work.  See
+// https://github.com/abseil/abseil-cpp/issues/207 and
+// https://developer.apple.com/documentation/xcode_release_notes/xcode_10_release_notes
+#if defined(__APPLE__) && defined(_LIBCPP_VERSION) && \
+    defined(__MAC_OS_X_VERSION_MIN_REQUIRED__) &&     \
+    __ENVIRONMENT_MAC_OS_X_VERSION_MIN_REQUIRED__ >= 101400
+#define ABSL_INTERNAL_MACOS_HAS_CXX_17_TYPES 1
+#else
+#define ABSL_INTERNAL_MACOS_HAS_CXX_17_TYPES 0
+#endif
+
 // ABSL_HAVE_STD_ANY
 //
 // Checks whether C++17 std::any is available by checking whether <any> exists.
@@ -373,7 +385,8 @@
 #endif
 
 #ifdef __has_include
-#if __has_include(<any>) && __cplusplus >= 201703L
+#if __has_include(<any>) && __cplusplus >= 201703L && \
+    ABSL_INTERNAL_MACOS_HAS_CXX_17_TYPES
 #define ABSL_HAVE_STD_ANY 1
 #endif
 #endif
@@ -386,7 +399,8 @@
 #endif
 
 #ifdef __has_include
-#if __has_include(<optional>) && __cplusplus >= 201703L
+#if __has_include(<optional>) && __cplusplus >= 201703L && \
+    ABSL_INTERNAL_MACOS_HAS_CXX_17_TYPES
 #define ABSL_HAVE_STD_OPTIONAL 1
 #endif
 #endif
@@ -399,7 +413,8 @@
 #endif
 
 #ifdef __has_include
-#if __has_include(<variant>) && __cplusplus >= 201703L
+#if __has_include(<variant>) && __cplusplus >= 201703L && \
+    ABSL_INTERNAL_MACOS_HAS_CXX_17_TYPES
 #define ABSL_HAVE_STD_VARIANT 1
 #endif
 #endif