1/*===-- llvm-c/Visibility.h - Visibility macros for llvm-c ------*- C++ -*-===*\
2|* *|
3|* Part of the LLVM Project, under the Apache License v2.0 with LLVM *|
4|* Exceptions. *|
5|* See https://llvm.org/LICENSE.txt for license information. *|
6|* SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception *|
7|* *|
8|*===----------------------------------------------------------------------===*|
9|* *|
10|* This header defines visibility macros used for the LLVM C interface. These *|
11|* macros are used to annotate C functions that should be exported as part of *|
12|* a shared library or DLL. *|
13|* *|
14\*===----------------------------------------------------------------------===*/
15
16#ifndef LLVM_C_VISIBILITY_H
17#define LLVM_C_VISIBILITY_H
18
19#include "llvm/Config/llvm-config.h"
20
21/// LLVM_C_ABI is the export/visibility macro used to mark symbols declared in
22/// llvm-c as exported when built as a shared library.
23
24#if !defined(LLVM_ABI_GENERATING_ANNOTATIONS)
25// TODO(https://github.com/llvm/llvm-project/issues/145406): eliminate need for
26// two preprocessor definitions to gate LLVM_ABI macro definitions.
27#if defined(LLVM_ENABLE_LLVM_C_EXPORT_ANNOTATIONS) && \
28 !defined(LLVM_BUILD_STATIC)
29#if defined(_WIN32) && !defined(__MINGW32__)
30#if defined(LLVM_EXPORTS)
31#define LLVM_C_ABI __declspec(dllexport)
32#else
33#define LLVM_C_ABI __declspec(dllimport)
34#endif
35#elif defined(__has_attribute) && __has_attribute(visibility)
36#define LLVM_C_ABI __attribute__((visibility("default")))
37#endif
38#endif
39#if !defined(LLVM_C_ABI)
40#define LLVM_C_ABI
41#endif
42#endif
43
44#endif
45