1 files changed, 156 insertions, 0 deletions
diff --git a/absl/copts/copts.py b/absl/copts/copts.py
new file mode 100644
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+++ b/absl/copts/copts.py
@@ -0,0 +1,156 @@
+"""Abseil compiler options.
+
+This is the source of truth for Abseil compiler options.  To modify Abseil
+compilation options:
+
+  (1) Edit the appropriate list in this file.
+  (2) Run `python <path_to_absl>/copts/generate_copts.py`.
+
+The generated copts are consumed by configure_copts.bzl and
+AbseilConfigureCopts.cmake.
+"""
+
+import collections  # absl:google-only(used for internal flags)
+
+COPT_VARS = {
+    "GCC_FLAGS": [
+        "-Wall",
+        "-Wextra",
+        "-Wcast-qual",
+        "-Wconversion-null",
+        "-Wmissing-declarations",
+        "-Woverlength-strings",
+        "-Wpointer-arith",
+        "-Wunused-local-typedefs",
+        "-Wunused-result",
+        "-Wvarargs",
+        "-Wvla",  # variable-length array
+        "-Wwrite-strings",
+        # Google style does not use unsigned integers, though STL containers
+        # have unsigned types.
+        "-Wno-sign-compare",
+    ],
+    "GCC_TEST_FLAGS": [
+        "-Wno-conversion-null",
+        "-Wno-missing-declarations",
+        "-Wno-sign-compare",
+        "-Wno-unused-function",
+        "-Wno-unused-parameter",
+        "-Wno-unused-private-field",
+    ],
+    "GCC_EXCEPTIONS_FLAGS": ["-fexceptions"],
+
+    # Docs on single flags is preceded by a comment.
+    # Docs on groups of flags is preceded by ###.
+    "LLVM_FLAGS": [
+        "-Wall",
+        "-Wextra",
+        "-Weverything",
+        # Abseil does not support C++98
+        "-Wno-c++98-compat-pedantic",
+        # Turns off all implicit conversion warnings. Most are re-enabled below.
+        "-Wno-conversion",
+        "-Wno-covered-switch-default",
+        "-Wno-deprecated",
+        "-Wno-disabled-macro-expansion",
+        "-Wno-double-promotion",
+        ###
+        # Turned off as they include valid C++ code.
+        "-Wno-comma",
+        "-Wno-extra-semi",
+        "-Wno-packed",
+        "-Wno-padded",
+        ###
+        # Google style does not use unsigned integers, though STL containers
+        # have unsigned types.
+        "-Wno-sign-compare",
+        ###
+        "-Wno-float-conversion",
+        "-Wno-float-equal",
+        "-Wno-format-nonliteral",
+        # Too aggressive: warns on Clang extensions enclosed in Clang-only
+        # compilation paths.
+        "-Wno-gcc-compat",
+        ###
+        # Some internal globals are necessary. Don't do this at home.
+        "-Wno-global-constructors",
+        "-Wno-exit-time-destructors",
+        ###
+        "-Wno-nested-anon-types",
+        "-Wno-non-modular-include-in-module",
+        "-Wno-old-style-cast",
+        # Warns on preferred usage of non-POD types such as string_view
+        "-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",
+        # Causes warnings on include guards
+        "-Wno-unused-macros",
+        "-Wno-weak-vtables",
+        ###
+        # Implicit conversion warnings turned off by -Wno-conversion
+        # which are re-enabled below.
+        "-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",
+    ],
+    "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",
+        # gtest depends on this GNU extension being offered.
+        "-Wno-gnu-zero-variadic-macro-arguments",
+    ],
+    "LLVM_EXCEPTIONS_FLAGS": ["-fexceptions"],
+    # /Wall with msvc includes unhelpful warnings such as C4711, C4710, ...
+    "MSVC_FLAGS": [
+        "/W3",
+        "/wd4005",  # macro-redefinition
+        "/wd4068",  # unknown pragma
+        "/wd4180",  # qualifier applied to function type has no meaning; ignored
+        "/wd4244",  # conversion from 'type1' to 'type2', possible loss of data
+        "/wd4267",  # conversion from 'size_t' to 'type', possible loss of data
+        # forcing value to bool 'true' or 'false' (performance warning)
+        "/wd4800",
+        "/DNOMINMAX",  # Don't define min and max macros (windows.h)
+        # Don't bloat namespace with incompatible winsock versions.
+        "/DWIN32_LEAN_AND_MEAN",
+        # Don't warn about usage of insecure C functions.
+        "/D_CRT_SECURE_NO_WARNINGS",
+        "/D_SCL_SECURE_NO_WARNINGS",
+        # Introduced in VS 2017 15.8, allow overaligned types in aligned_storage
+        "/D_ENABLE_EXTENDED_ALIGNED_STORAGE",
+    ],
+    "MSVC_TEST_FLAGS": [
+        "/wd4018",  # signed/unsigned mismatch
+        "/wd4101",  # unreferenced local variable
+        "/wd4503",  # decorated name length exceeded, name was truncated
+    ],
+    "MSVC_EXCEPTIONS_FLAGS": [
+        "/U_HAS_EXCEPTIONS", "/D_HAS_EXCEPTIONS=1", "/EHsc"
+    ]
+}