================ @@ -0,0 +1,69 @@ +//===-- clang/Support/Compiler.h - Compiler abstraction support -*- C++ -*-===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// +// +// This file defines explicit visibility macros used to export symbols from +// clang-cpp +// +//===----------------------------------------------------------------------===// + +#ifndef CLANG_SUPPORT_COMPILER_H +#define CLANG_SUPPORT_COMPILER_H + +#include "llvm/Support/Compiler.h" + +/// CLANG_ABI is the main export/visibility macro to mark something as +/// explicitly exported when clang is built as a shared library with everything +/// else that is unannotated will have internal visibility. +/// +/// CLANG_EXPORT_TEMPLATE is used on explicit template instantiations in source +/// files that were declared extern in a header. This macro is only set as a +/// compiler export attribute on windows, on other platforms it does nothing. +/// +/// CLANG_TEMPLATE_ABI is for annotating extern template declarations in headers +/// for both functions and classes. On windows its turned in to dllimport for +/// library consumers, for other platforms its a default visibility attribute. +#ifndef CLANG_ABI_GENERATING_ANNOTATIONS +// Marker to add to classes or functions in public headers that should not have +// export macros added to them by the clang tool +#define CLANG_ABI_NOT_EXPORTED +#if defined(LLVM_BUILD_LLVM_DYLIB) || defined(LLVM_BUILD_SHARED_LIBS) +// Some libraries like those for tablegen are linked in to tools that used +// in the build so can't depend on the llvm shared library. If export macros +// were left enabled when building these we would get duplicate or +// missing symbol linker errors on windows. +#if defined(CLANG_BUILD_STATIC) +#define CLANG_ABI +#define CLANG_TEMPLATE_ABI +#define CLANG_EXPORT_TEMPLATE +#elif defined(_WIN32) && !defined(__MINGW32__) +#if defined(CLANG_EXPORTS) +#define CLANG_ABI __declspec(dllexport) +#define CLANG_TEMPLATE_ABI +#define CLANG_EXPORT_TEMPLATE __declspec(dllexport) +#else +#define CLANG_ABI __declspec(dllimport) +#define CLANG_TEMPLATE_ABI __declspec(dllimport) +#define CLANG_EXPORT_TEMPLATE +#endif +#elif defined(__ELF__) || defined(__MINGW32__) || defined(_AIX) +#define CLANG_ABI LLVM_ATTRIBUTE_VISIBILITY_DEFAULT +#define CLANG_TEMPLATE_ABI LLVM_ATTRIBUTE_VISIBILITY_DEFAULT +#define CLANG_EXPORT_TEMPLATE +#elif defined(__MACH__) || defined(__WASM__) +#define CLANG_ABI LLVM_ATTRIBUTE_VISIBILITY_DEFAULT +#define CLANG_TEMPLATE_ABI +#define CLANG_EXPORT_TEMPLATE +#endif +#else +#define CLANG_ABI +#define CLANG_TEMPLATE_ABI +#define CLANG_EXPORT_TEMPLATE +#endif +#endif ---------------- fsfod wrote:
I think I said this in the previous PR that clang-format would strip out any indent for this. https://github.com/llvm/llvm-project/pull/108276 _______________________________________________ cfe-commits mailing list cfe-commits@lists.llvm.org https://lists.llvm.org/cgi-bin/mailman/listinfo/cfe-commits
