| /**************************************************************************** |
| * |
| * config/public-macros.h |
| * |
| * Define a set of compiler macros used in public FreeType headers. |
| * |
| * Copyright (C) 2020 by |
| * David Turner, Robert Wilhelm, and Werner Lemberg. |
| * |
| * This file is part of the FreeType project, and may only be used, |
| * modified, and distributed under the terms of the FreeType project |
| * license, LICENSE.TXT. By continuing to use, modify, or distribute |
| * this file you indicate that you have read the license and |
| * understand and accept it fully. |
| * |
| */ |
| |
| /* The definitions in this file are used by the public FreeType headers, |
| * and thus should be considered part of the public API. |
| * |
| * Other compiler-specific macro definitions that are not exposed by the |
| * FreeType API should go into include/freetype/internal/compiler-macros.h |
| * instead. |
| */ |
| #ifndef FREETYPE_CONFIG_PUBLIC_MACROS_H_ |
| #define FREETYPE_CONFIG_PUBLIC_MACROS_H_ |
| |
| /* FT_BEGIN_HEADER and FT_END_HEADER might have already been defined by |
| * <freetype/config/ftheader.h>, but we don't want to include this header |
| * here, so redefine the macros here only when needed. Their definition is |
| * very stable, so keeping them in sync with the ones in the header should |
| * not be a maintenance issue. |
| */ |
| #ifndef FT_BEGIN_HEADER |
| # ifdef __cplusplus |
| # define FT_BEGIN_HEADER extern "C" { |
| # else |
| # define FT_BEGIN_HEADER /* nothing */ |
| # endif |
| #endif /* FT_END_HEADER */ |
| |
| #ifndef FT_END_HEADER |
| # ifdef __cplusplus |
| # define FT_END_HEADER } |
| # else |
| # define FT_END_HEADER /* nothing */ |
| # endif |
| #endif /* FT_END_HEADER */ |
| |
| FT_BEGIN_HEADER |
| |
| /* Mark a function declaration as public. This ensures it will be properly |
| * exported to client code. Place this before a function declaration. |
| * |
| * NOTE: This macro should be considered an internal implementation detail, and |
| * not part of the FreeType API. It is only defined here because it is needed |
| * by FT_EXPORT() |
| */ |
| #if defined(_WIN32) |
| # if defined(FT2_BUILD_LIBRARY) && defined( DLL_EXPORT ) |
| # define FT_PUBLIC_FUNCTION_ATTRIBUTE __declspec( dllexport ) |
| # elif defined( DLL_IMPORT ) |
| # define FT_PUBLIC_FUNCTION_ATTRIBUTE __declspec( dllimport ) |
| # endif |
| #elif (defined(__GNUC__) && __GNUC__ >= 4) || defined(__clang__) |
| # define FT_PUBLIC_FUNCTION_ATTRIBUTE __attribute__((visibility("default"))) |
| #elif defined(__SUNPRO_C) && __SUNPRO_C >= 0x550 |
| # define FT_PUBLIC_FUNCTION_ATTRIBUTE __global |
| #endif |
| |
| #ifndef FT_PUBLIC_FUNCTION_ATTRIBUTE |
| # define FT_PUBLIC_FUNCTION_ATTRIBUTE /* nothing */ |
| #endif |
| |
| /* Define a public FreeType API function. This ensures it is properly exported |
| * or imported at build time. The macro parameter is the function's return type |
| * as in: |
| * |
| * FT_EXPORT( FT_Bool ) FT_Object_Method( FT_Object obj, ... ); |
| * |
| * NOTE: This requires that all FT_EXPORT() uses are inside FT_BEGIN_HEADER .. |
| * FT_END_HEADER blocks. This guarantees that the functions are exported with |
| * C linkage, even when the header is included by a C++ source file. |
| */ |
| #define FT_EXPORT( x ) FT_PUBLIC_FUNCTION_ATTRIBUTE extern x |
| |
| /* `FT_UNUSED` indicates that a given parameter is not used -- */ |
| /* this is only used to get rid of unpleasant compiler warnings. */ |
| /* */ |
| /* Technically, this was not meant to be part of the public API, */ |
| /* but some third-party code depends on it. */ |
| /* */ |
| #ifndef FT_UNUSED |
| #define FT_UNUSED( arg ) ( (arg) = (arg) ) |
| #endif |
| |
| |
| FT_END_HEADER |
| |
| #endif /* FREETYPE_CONFIG_PUBLIC_MACROS_H_ */ |