Add 'third_party/abseil_cpp/' from commit '768eb2ca2857342673fcd462792ce04b8bac3fa3' r/781

git-subtree-dir: third_party/abseil_cpp
git-subtree-mainline: ffb2ae54beb5796cd408fbe15d2d2da09ff37adf
git-subtree-split: 768eb2ca2857342673fcd462792ce04b8bac3fa3

1 files changed, 67 insertions, 0 deletions

diff --git a/third_party/abseil_cpp/absl/copts/AbseilConfigureCopts.cmake b/third_party/abseil_cpp/absl/copts/AbseilConfigureCopts.cmake
new file mode 100644
index 000000000000..acd46d04aa5a
--- /dev/null
+++ b/third_party/abseil_cpp/absl/copts/AbseilConfigureCopts.cmake
@@ -0,0 +1,67 @@
+# See absl/copts/copts.py and absl/copts/generate_copts.py
+include(GENERATED_AbseilCopts)
+
+set(ABSL_LSAN_LINKOPTS "")
+set(ABSL_HAVE_LSAN OFF)
+set(ABSL_DEFAULT_LINKOPTS "")
+
+if (BUILD_SHARED_LIBS AND MSVC)
+  set(ABSL_BUILD_DLL TRUE)
+  set(CMAKE_WINDOWS_EXPORT_ALL_SYMBOLS ON)
+else()
+  set(ABSL_BUILD_DLL FALSE)
+endif()
+
+if("${CMAKE_SYSTEM_PROCESSOR}" MATCHES "x86_64|amd64|AMD64")
+  if (MSVC)
+    set(ABSL_RANDOM_RANDEN_COPTS "${ABSL_RANDOM_HWAES_MSVC_X64_FLAGS}")
+  else()
+    set(ABSL_RANDOM_RANDEN_COPTS "${ABSL_RANDOM_HWAES_X64_FLAGS}")
+  endif()
+elseif("${CMAKE_SYSTEM_PROCESSOR}" MATCHES "arm.*|aarch64")
+  if ("${CMAKE_SIZEOF_VOID_P}" STREQUAL "8")
+    set(ABSL_RANDOM_RANDEN_COPTS "${ABSL_RANDOM_HWAES_ARM64_FLAGS}")
+  elseif("${CMAKE_SIZEOF_VOID_P}" STREQUAL "4")
+    set(ABSL_RANDOM_RANDEN_COPTS "${ABSL_RANDOM_HWAES_ARM32_FLAGS}")
+  else()
+    message(WARNING "Value of CMAKE_SIZEOF_VOID_P (${CMAKE_SIZEOF_VOID_P}) is not supported.")
+  endif()
+else()
+  message(WARNING "Value of CMAKE_SYSTEM_PROCESSOR (${CMAKE_SYSTEM_PROCESSOR}) is unknown and cannot be used to set ABSL_RANDOM_RANDEN_COPTS")
+  set(ABSL_RANDOM_RANDEN_COPTS "")
+endif()
+
+
+if("${CMAKE_CXX_COMPILER_ID}" STREQUAL "GNU")
+  set(ABSL_DEFAULT_COPTS "${ABSL_GCC_FLAGS}")
+  set(ABSL_TEST_COPTS "${ABSL_GCC_FLAGS};${ABSL_GCC_TEST_FLAGS}")
+elseif("${CMAKE_CXX_COMPILER_ID}" MATCHES "Clang")
+  # MATCHES so we get both Clang and AppleClang
+  if(MSVC)
+    # clang-cl is half MSVC, half LLVM
+    set(ABSL_DEFAULT_COPTS "${ABSL_CLANG_CL_FLAGS}")
+    set(ABSL_TEST_COPTS "${ABSL_CLANG_CL_FLAGS};${ABSL_CLANG_CL_TEST_FLAGS}")
+    set(ABSL_DEFAULT_LINKOPTS "${ABSL_MSVC_LINKOPTS}")
+  else()
+    set(ABSL_DEFAULT_COPTS "${ABSL_LLVM_FLAGS}")
+    set(ABSL_TEST_COPTS "${ABSL_LLVM_FLAGS};${ABSL_LLVM_TEST_FLAGS}")
+    if("${CMAKE_CXX_COMPILER_ID}" STREQUAL "Clang")
+      # AppleClang doesn't have lsan
+      # https://developer.apple.com/documentation/code_diagnostics
+      if(NOT CMAKE_CXX_COMPILER_VERSION VERSION_LESS 3.5)
+        set(ABSL_LSAN_LINKOPTS "-fsanitize=leak")
+        set(ABSL_HAVE_LSAN ON)
+      endif()
+    endif()
+  endif()
+elseif("${CMAKE_CXX_COMPILER_ID}" STREQUAL "MSVC")
+  set(ABSL_DEFAULT_COPTS "${ABSL_MSVC_FLAGS}")
+  set(ABSL_TEST_COPTS "${ABSL_MSVC_FLAGS};${ABSL_MSVC_TEST_FLAGS}")
+  set(ABSL_DEFAULT_LINKOPTS "${ABSL_MSVC_LINKOPTS}")
+else()
+  message(WARNING "Unknown compiler: ${CMAKE_CXX_COMPILER}.  Building with no default flags")
+  set(ABSL_DEFAULT_COPTS "")
+  set(ABSL_TEST_COPTS "")
+endif()
+
+set(ABSL_CXX_STANDARD "${CMAKE_CXX_STANDARD}")