diff options
Diffstat (limited to 'gfx/skia/skia/include/private/base/SkAPI.h')
| -rw-r--r-- | gfx/skia/skia/include/private/base/SkAPI.h | 52 |
1 files changed, 52 insertions, 0 deletions
diff --git a/gfx/skia/skia/include/private/base/SkAPI.h b/gfx/skia/skia/include/private/base/SkAPI.h new file mode 100644 index 0000000000..4028f95d87 --- /dev/null +++ b/gfx/skia/skia/include/private/base/SkAPI.h @@ -0,0 +1,52 @@ +/* + * Copyright 2022 Google LLC + * + * Use of this source code is governed by a BSD-style license that can be + * found in the LICENSE file. + */ + +#ifndef SkAPI_DEFINED +#define SkAPI_DEFINED + +#include "include/private/base/SkLoadUserConfig.h" // IWYU pragma: keep + +// If SKIA_IMPLEMENTATION is defined as 1, that signals we are building Skia and should +// export our symbols. If it is not set (or set to 0), then Skia is being used by a client +// and we should not export our symbols. +#if !defined(SKIA_IMPLEMENTATION) + #define SKIA_IMPLEMENTATION 0 +#endif + +// If we are compiling Skia is being as a DLL, we need to be sure to export all of our public +// APIs to that DLL. If a client is using Skia which was compiled as a DLL, we need to instruct +// the linker to use the symbols from that DLL. This is the goal of the SK_API define. +#if !defined(SK_API) + #if defined(SKIA_DLL) + #if defined(_MSC_VER) + #if SKIA_IMPLEMENTATION + #define SK_API __declspec(dllexport) + #else + #define SK_API __declspec(dllimport) + #endif + #else + #define SK_API __attribute__((visibility("default"))) + #endif + #else + #define SK_API + #endif +#endif + +// SK_SPI is functionally identical to SK_API, but used within src to clarify that it's less stable +#if !defined(SK_SPI) + #define SK_SPI SK_API +#endif + +// See https://clang.llvm.org/docs/AttributeReference.html#availability +// The API_AVAILABLE macro comes from <os/availability.h> on MacOS +#if defined(SK_ENABLE_API_AVAILABLE) +# define SK_API_AVAILABLE API_AVAILABLE +#else +# define SK_API_AVAILABLE(...) +#endif + +#endif |