1 files changed, 145 insertions, 0 deletions
diff --git a/CMake/AbseilConfigureCopts.cmake b/CMake/AbseilConfigureCopts.cmake
new file mode 100644
index 000000000000..96e0390b9dc8
--- /dev/null
+++ b/CMake/AbseilConfigureCopts.cmake
@@ -0,0 +1,145 @@
+# Abseil-specific compiler flags.  See absl/copts.bzl for description.
+# DO NOT CHANGE THIS FILE WITHOUT THE CORRESPONDING CHANGE TO absl/copts.bzl
+
+list(APPEND GCC_FLAGS
+  -Wall
+  -Wextra
+  -Wcast-qual
+  -Wconversion-null
+  -Wmissing-declarations
+  -Woverlength-strings
+  -Wpointer-arith
+  -Wunused-local-typedefs
+  -Wunused-result
+  -Wvarargs
+  -Wwrite-strings
+  -Wno-sign-compare
+)
+
+list(APPEND GCC_TEST_FLAGS
+  -Wno-conversion-null
+  -Wno-missing-declarations
+  -Wno-sign-compare
+  -Wno-unused-function
+  -Wno-unused-parameter
+  -Wno-unused-private-field
+)
+
+list(APPEND LLVM_FLAGS
+  -Wall
+  -Wextra
+  -Weverything
+  -Wno-c++98-compat-pedantic
+  -Wno-conversion
+  -Wno-covered-switch-default
+  -Wno-deprecated
+  -Wno-disabled-macro-expansion
+  -Wno-double-promotion
+  -Wno-comma
+  -Wno-extra-semi
+  -Wno-packed
+  -Wno-padded
+  -Wno-sign-compare
+  -Wno-float-conversion
+  -Wno-float-equal
+  -Wno-format-nonliteral
+  -Wno-gcc-compat
+  -Wno-global-constructors
+  -Wno-exit-time-destructors
+  -Wno-nested-anon-types
+  -Wno-non-modular-include-in-module
+  -Wno-old-style-cast
+  -Wno-range-loop-analysis
+  -Wno-reserved-id-macro
+  -Wno-shorten-64-to-32
+  -Wno-switch-enum
+  -Wno-thread-safety-negative
+  -Wno-undef
+  -Wno-unknown-warning-option
+  -Wno-unreachable-code
+  -Wno-unused-macros
+  -Wno-weak-vtables
+  -Wbitfield-enum-conversion
+  -Wbool-conversion
+  -Wconstant-conversion
+  -Wenum-conversion
+  -Wint-conversion
+  -Wliteral-conversion
+  -Wnon-literal-null-conversion
+  -Wnull-conversion
+  -Wobjc-literal-conversion
+  -Wno-sign-conversion
+  -Wstring-conversion
+)
+
+list(APPEND LLVM_TEST_FLAGS
+  -Wno-c99-extensions
+  -Wno-missing-noreturn
+  -Wno-missing-prototypes
+  -Wno-missing-variable-declarations
+  -Wno-null-conversion
+  -Wno-shadow
+  -Wno-shift-sign-overflow
+  -Wno-sign-compare
+  -Wno-unused-function
+  -Wno-unused-member-function
+  -Wno-unused-parameter
+  -Wno-unused-private-field
+  -Wno-unused-template
+  -Wno-used-but-marked-unused
+  -Wno-zero-as-null-pointer-constant
+  -Wno-gnu-zero-variadic-macro-arguments
+)
+
+list(APPEND MSVC_FLAGS
+  /W3
+  /wd4005
+  /wd4018
+  /wd4068
+  /wd4180
+  /wd4244
+  /wd4267
+  /wd4800
+  /DNOMINMAX
+  /DWIN32_LEAN_AND_MEAN
+  /D_CRT_SECURE_NO_WARNINGS
+  /D_SCL_SECURE_NO_WARNINGS
+  /D_ENABLE_EXTENDED_ALIGNED_STORAGE
+)
+
+list(APPEND MSVC_TEST_FLAGS
+  /wd4101
+  /wd4503
+)
+
+if ("${CMAKE_CXX_COMPILER_ID}" STREQUAL "GNU")
+  set(ABSL_DEFAULT_COPTS "${GCC_FLAGS}")
+  set(ABSL_TEST_COPTS "${GCC_FLAGS};${GCC_TEST_FLAGS}")
+  set(ABSL_EXCEPTIONS_FLAG "-fexceptions")
+elseif("${CMAKE_CXX_COMPILER_ID}" MATCHES "Clang")
+  # MATCHES so we get both Clang and AppleClang
+  set(ABSL_DEFAULT_COPTS "${LLVM_FLAGS}")
+  set(ABSL_TEST_COPTS "${LLVM_FLAGS};${LLVM_TEST_FLAGS}")
+  set(ABSL_EXCEPTIONS_FLAG "-fexceptions")
+elseif("${CMAKE_CXX_COMPILER_ID}" STREQUAL "MSVC")
+  set(ABSL_DEFAULT_COPTS "${MSVC_FLAGS}")
+  set(ABSL_TEST_COPTS "${MSVC_FLAGS};${MSVC_TEST_FLAGS}")
+  set(ABSL_EXCEPTIONS_FLAG "/U_HAS_EXCEPTIONS;/D_HAS_EXCEPTIONS=1;/EHsc")
+else()
+  message(WARNING "Unknown compiler: ${CMAKE_CXX_COMPILER}.  Building with no default flags")
+  set(ABSL_DEFAULT_COPTS "")
+  set(ABSL_TEST_COPTS "")
+  set(ABSL_EXCEPTIONS_FLAG "")
+endif()
+
+# This flag is used internally for Bazel builds and is kept here for consistency
+set(ABSL_EXCEPTIONS_FLAG_LINKOPTS "")
+
+if("${CMAKE_CXX_STANDARD}" EQUAL 98)
+  message(FATAL_ERROR "Abseil requires at least C++11")
+elseif(NOT "${CMAKE_CXX_STANDARD}")
+  message(STATUS "No CMAKE_CXX_STANDARD set, assuming 11")
+  set(ABSL_CXX_STANDARD 11)
+else()
+  set(ABSL_CXX_STANDARD "${CMAKE_CXX_STANDARD}")
+endif()