* builds/unix/ftconfig.h.in, builds/vms/ftconfig.h, include/freetype/config/ftconfig.h: Split off macro definitions required by the FreeType API headers to... * include/freetype/config/public-macros.h: ...this new file. * builds/unix/ftconfig.h.in, builds/vms/ftconfig.h, include/freetype/config/ftconfig.h: Split off macro definitions used by the library but not to be exposed to clients to... * include/freetype/config/compiler-macros.h: ...this new file. * include/freetype/internal/*.h, src/raster/ftraster.h: Include `compiler-macros.h' where needed.GSoC-2020-greg
David Turner
5 years ago
committed by
Werner Lemberg
parent
0322efb5e5
commit
bb66c8d8cf
14 changed files with 369 additions and 808 deletions
@ -0,0 +1,87 @@ |
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/****************************************************************************
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* |
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* config/public-macros.h |
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* |
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* Define a set of compiler macros used in public FreeType headers. |
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* |
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* Copyright (C) 2020 by |
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* David Turner, Robert Wilhelm, and Werner Lemberg. |
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* |
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* This file is part of the FreeType project, and may only be used, |
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* modified, and distributed under the terms of the FreeType project |
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* license, LICENSE.TXT. By continuing to use, modify, or distribute |
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* this file you indicate that you have read the license and |
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* understand and accept it fully. |
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* |
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*/ |
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/* The definitions in this file are used by the public FreeType headers,
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* and thus should be considered part of the public API. |
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* |
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* Other compiler-specific macro definitions that are not exposed by the |
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* FreeType API should go into include/freetype/internal/compiler-macros.h |
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* instead. |
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*/ |
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#ifndef FREETYPE_CONFIG_PUBLIC_MACROS_H_ |
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#define FREETYPE_CONFIG_PUBLIC_MACROS_H_ |
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/* FT_BEGIN_HEADER and FT_END_HEADER might have already been defined by
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* <freetype/config/ftheader.h>, but we don't want to include this header |
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* here, so redefine the macros here only when needed. Their definition is |
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* very stable, so keeping them in sync with the ones in the header should |
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* not be a maintenance issue. |
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*/ |
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#ifndef FT_BEGIN_HEADER |
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# ifdef __cplusplus |
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# define FT_BEGIN_HEADER extern "C" { |
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# else |
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# define FT_BEGIN_HEADER /* nothing */ |
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# endif |
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#endif /* FT_END_HEADER */ |
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#ifndef FT_END_HEADER |
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# ifdef __cplusplus |
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# define FT_END_HEADER } |
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# else |
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# define FT_END_HEADER /* nothing */ |
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# endif |
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#endif /* FT_END_HEADER */ |
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FT_BEGIN_HEADER |
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/* Define a public FreeType API function. This ensures it is properly exported
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* or imported at build time. |
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*/ |
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#ifndef FT_EXPORT |
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#ifdef FT2_BUILD_LIBRARY |
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#if defined( _WIN32 ) && defined( DLL_EXPORT ) |
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#define FT_EXPORT( x ) __declspec( dllexport ) x |
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#elif defined( __GNUC__ ) && __GNUC__ >= 4 |
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#define FT_EXPORT( x ) __attribute__(( visibility( "default" ) )) x |
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#elif defined( __SUNPRO_C ) && __SUNPRO_C >= 0x550 |
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#define FT_EXPORT( x ) __global x |
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#elif defined( __cplusplus ) |
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#define FT_EXPORT( x ) extern "C" x |
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#else |
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#define FT_EXPORT( x ) extern x |
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#endif |
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#else /* !FT2_BUILD_LIBRARY */ |
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#if defined( _WIN32 ) && defined( DLL_IMPORT ) |
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#define FT_EXPORT( x ) __declspec( dllimport ) x |
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#elif defined( __cplusplus ) |
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#define FT_EXPORT( x ) extern "C" x |
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#else |
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#define FT_EXPORT( x ) extern x |
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#endif |
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#endif /* !FT2_BUILD_LIBRARY */ |
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#endif /* !FT_EXPORT */ |
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FT_END_HEADER |
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#endif /* FREETYPE_CONFIG_PUBLIC_MACROS_H_ */ |
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@ -0,0 +1,246 @@ |
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/****************************************************************************
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* |
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* internal/compiler-macros.h |
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* |
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* Compiler-specific macro definitions used internally by FreeType. |
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* |
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* Copyright (C) 2020 by |
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* David Turner, Robert Wilhelm, and Werner Lemberg. |
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* |
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* This file is part of the FreeType project, and may only be used, |
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* modified, and distributed under the terms of the FreeType project |
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* license, LICENSE.TXT. By continuing to use, modify, or distribute |
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* this file you indicate that you have read the license and |
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* understand and accept it fully. |
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* |
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*/ |
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#ifndef INTERNAL_COMPILER_MACROS_H_ |
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#define INTERNAL_COMPILER_MACROS_H_ |
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#include <freetype/config/public-macros.h> |
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FT_BEGIN_HEADER |
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/* `FT_UNUSED` indicates that a given parameter is not used -- */ |
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/* this is only used to get rid of unpleasant compiler warnings. */ |
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#ifndef FT_UNUSED |
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#define FT_UNUSED( arg ) ( (arg) = (arg) ) |
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#endif |
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/* Fix compiler warning with sgi compiler. */ |
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#if defined( __sgi ) && !defined( __GNUC__ ) |
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#if defined( _COMPILER_VERSION ) && ( _COMPILER_VERSION >= 730 ) |
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#pragma set woff 3505 |
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#endif |
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#endif |
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#ifdef _WIN64 |
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/* only 64bit Windows uses the LLP64 data model, i.e., */ |
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/* 32bit integers, 64bit pointers */ |
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#define FT_UINT_TO_POINTER( x ) (void*)(unsigned __int64)(x) |
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#else |
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#define FT_UINT_TO_POINTER( x ) (void*)(unsigned long)(x) |
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#endif |
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/**************************************************************************
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* |
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* miscellaneous |
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* |
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*/ |
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#define FT_BEGIN_STMNT do { |
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#define FT_END_STMNT } while ( 0 ) |
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#define FT_DUMMY_STMNT FT_BEGIN_STMNT FT_END_STMNT |
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/* `typeof` condition taken from gnulib's `intprops.h` header file */ |
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#if ( ( defined( __GNUC__ ) && __GNUC__ >= 2 ) || \ |
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( defined( __IBMC__ ) && __IBMC__ >= 1210 && \
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defined( __IBM__TYPEOF__ ) ) || \
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( defined( __SUNPRO_C ) && __SUNPRO_C >= 0x5110 && !__STDC__ ) ) |
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#define FT_TYPEOF( type ) ( __typeof__ ( type ) ) |
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#else |
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#define FT_TYPEOF( type ) /* empty */ |
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#endif |
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/* Use `FT_LOCAL` and `FT_LOCAL_DEF` to declare and define, */ |
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/* respectively, a function that gets used only within the scope of a */ |
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/* module. Normally, both the header and source code files for such a */ |
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/* function are within a single module directory. */ |
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/* */ |
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/* Intra-module arrays should be tagged with `FT_LOCAL_ARRAY` and */ |
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/* `FT_LOCAL_ARRAY_DEF`. */ |
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/* */ |
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#ifdef FT_MAKE_OPTION_SINGLE_OBJECT |
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#define FT_LOCAL( x ) static x |
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#define FT_LOCAL_DEF( x ) static x |
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#else |
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#ifdef __cplusplus |
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#define FT_LOCAL( x ) extern "C" x |
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#define FT_LOCAL_DEF( x ) extern "C" x |
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#else |
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#define FT_LOCAL( x ) extern x |
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#define FT_LOCAL_DEF( x ) x |
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#endif |
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#endif /* FT_MAKE_OPTION_SINGLE_OBJECT */ |
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#define FT_LOCAL_ARRAY( x ) extern const x |
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#define FT_LOCAL_ARRAY_DEF( x ) const x |
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/* Use `FT_BASE` and `FT_BASE_DEF` to declare and define, respectively, */ |
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/* functions that are used in more than a single module. In the */ |
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/* current setup this implies that the declaration is in a header file */ |
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/* in the `include/freetype/internal` directory, and the function body */ |
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/* is in a file in `src/base`. */ |
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/* */ |
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#ifndef FT_BASE |
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#ifdef __cplusplus |
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#define FT_BASE( x ) extern "C" x |
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#else |
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#define FT_BASE( x ) extern x |
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#endif |
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#endif /* !FT_BASE */ |
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#ifndef FT_BASE_DEF |
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#ifdef __cplusplus |
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#define FT_BASE_DEF( x ) x |
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#else |
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#define FT_BASE_DEF( x ) x |
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#endif |
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#endif /* !FT_BASE_DEF */ |
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/* When compiling FreeType as a DLL or DSO with hidden visibility */ |
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/* some systems/compilers need a special attribute in front OR after */ |
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/* the return type of function declarations. */ |
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/* */ |
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/* Two macros are used within the FreeType source code to define */ |
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/* exported library functions: `FT_EXPORT` and `FT_EXPORT_DEF`. */ |
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/* */ |
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/* - `FT_EXPORT( return_type )` */ |
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/* */ |
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/* is used in a function declaration, as in */ |
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/* */ |
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/* ``` */ |
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/* FT_EXPORT( FT_Error ) */ |
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/* FT_Init_FreeType( FT_Library* alibrary ); */ |
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/* ``` */ |
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/* */ |
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/* - `FT_EXPORT_DEF( return_type )` */ |
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/* */ |
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/* is used in a function definition, as in */ |
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/* */ |
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/* ``` */ |
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/* FT_EXPORT_DEF( FT_Error ) */ |
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/* FT_Init_FreeType( FT_Library* alibrary ) */ |
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/* { */ |
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/* ... some code ... */ |
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/* return FT_Err_Ok; */ |
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/* } */ |
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/* ``` */ |
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/* */ |
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/* You can provide your own implementation of `FT_EXPORT` and */ |
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/* `FT_EXPORT_DEF` here if you want. */ |
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/* */ |
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/* To export a variable, use `FT_EXPORT_VAR`. */ |
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/* */ |
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/* NOTE: See <freetype/config/public-macros.h> for FT_EXPORT() definition */ |
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#ifndef FT_EXPORT_DEF |
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#ifdef __cplusplus |
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#define FT_EXPORT_DEF( x ) extern "C" x |
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#else |
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#define FT_EXPORT_DEF( x ) extern x |
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#endif |
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#endif /* !FT_EXPORT_DEF */ |
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#ifndef FT_EXPORT_VAR |
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#ifdef __cplusplus |
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#define FT_EXPORT_VAR( x ) extern "C" x |
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#else |
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#define FT_EXPORT_VAR( x ) extern x |
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#endif |
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#endif /* !FT_EXPORT_VAR */ |
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/* The following macros are needed to compile the library with a */ |
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/* C++ compiler and with 16bit compilers. */ |
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/* */ |
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/* This is special. Within C++, you must specify `extern "C"` for */ |
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/* functions which are used via function pointers, and you also */ |
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/* must do that for structures which contain function pointers to */ |
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/* assure C linkage -- it's not possible to have (local) anonymous */ |
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/* functions which are accessed by (global) function pointers. */ |
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/* */ |
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/* */ |
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/* FT_CALLBACK_DEF is used to _define_ a callback function, */ |
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/* located in the same source code file as the structure that uses */ |
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/* it. */ |
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/* */ |
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/* FT_BASE_CALLBACK and FT_BASE_CALLBACK_DEF are used to declare */ |
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/* and define a callback function, respectively, in a similar way */ |
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/* as FT_BASE and FT_BASE_DEF work. */ |
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/* */ |
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/* FT_CALLBACK_TABLE is used to _declare_ a constant variable that */ |
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/* contains pointers to callback functions. */ |
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/* */ |
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/* FT_CALLBACK_TABLE_DEF is used to _define_ a constant variable */ |
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/* that contains pointers to callback functions. */ |
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/* */ |
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/* */ |
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/* Some 16bit compilers have to redefine these macros to insert */ |
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/* the infamous `_cdecl` or `__fastcall` declarations. */ |
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/* */ |
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#ifndef FT_CALLBACK_DEF |
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#ifdef __cplusplus |
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#define FT_CALLBACK_DEF( x ) extern "C" x |
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#else |
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#define FT_CALLBACK_DEF( x ) static x |
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#endif |
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#endif /* FT_CALLBACK_DEF */ |
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#ifndef FT_BASE_CALLBACK |
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#ifdef __cplusplus |
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#define FT_BASE_CALLBACK( x ) extern "C" x |
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#define FT_BASE_CALLBACK_DEF( x ) extern "C" x |
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#else |
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#define FT_BASE_CALLBACK( x ) extern x |
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#define FT_BASE_CALLBACK_DEF( x ) x |
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#endif |
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#endif /* FT_BASE_CALLBACK */ |
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#ifndef FT_CALLBACK_TABLE |
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#ifdef __cplusplus |
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#define FT_CALLBACK_TABLE extern "C" |
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#define FT_CALLBACK_TABLE_DEF extern "C" |
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#else |
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#define FT_CALLBACK_TABLE extern |
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#define FT_CALLBACK_TABLE_DEF /* nothing */ |
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#endif |
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#endif /* FT_CALLBACK_TABLE */ |
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FT_END_HEADER |
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#endif /* INTERNAL_COMPILER_MACROS_H_ */ |
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