SkPreConfig.h revision 7b4edb249bd9c8275348a2bba22e751564e70678 
1
2/*
3 * Copyright 2006 The Android Open Source Project
4 *
5 * Use of this source code is governed by a BSD-style license that can be
6 * found in the LICENSE file.
7 */
8
9
10#ifndef SkPreConfig_DEFINED
11#define SkPreConfig_DEFINED
12
13#ifdef WEBKIT_VERSION_MIN_REQUIRED
14    #include "config.h"
15#endif
16
17// Allows embedders that want to disable macros that take arguments to just
18// define that symbol to be one of these
19//
20#define SK_NOTHING_ARG1(arg1)
21#define SK_NOTHING_ARG2(arg1, arg2)
22#define SK_NOTHING_ARG3(arg1, arg2, arg3)
23
24//////////////////////////////////////////////////////////////////////
25
26#if !defined(SK_BUILD_FOR_ANDROID) && !defined(SK_BUILD_FOR_IOS) && !defined(SK_BUILD_FOR_PALM) && !defined(SK_BUILD_FOR_WINCE) && !defined(SK_BUILD_FOR_WIN32) && !defined(SK_BUILD_FOR_UNIX) && !defined(SK_BUILD_FOR_MAC) && !defined(SK_BUILD_FOR_SDL) && !defined(SK_BUILD_FOR_BREW) && !defined(SK_BUILD_FOR_NACL)
27
28    #ifdef __APPLE__
29        #include "TargetConditionals.h"
30    #endif
31
32    #if defined(PALMOS_SDK_VERSION)
33        #define SK_BUILD_FOR_PALM
34    #elif defined(UNDER_CE)
35        #define SK_BUILD_FOR_WINCE
36    #elif defined(WIN32)
37        #define SK_BUILD_FOR_WIN32
38    #elif defined(__SYMBIAN32__)
39        #define SK_BUILD_FOR_WIN32
40    #elif defined(ANDROID)
41        #define SK_BUILD_FOR_ANDROID
42    #elif defined(linux) || defined(__FreeBSD__) || defined(__OpenBSD__) || \
43          defined(__sun) || defined(__NetBSD__) || defined(__DragonFly__) || \
44          defined(__GLIBC__) || defined(__GNU__)
45        #define SK_BUILD_FOR_UNIX
46    #elif TARGET_OS_IPHONE || TARGET_IPHONE_SIMULATOR
47        #define SK_BUILD_FOR_IOS
48    #else
49        #define SK_BUILD_FOR_MAC
50    #endif
51
52#endif
53
54/* Even if the user only defined the framework variant we still need to build
55 * the default (NDK-compliant) Android code. Therefore, when attempting to
56 * include/exclude something from the framework variant check first that we are
57 * building for Android then check the status of the framework define.
58 */
59#if defined(SK_BUILD_FOR_ANDROID_FRAMEWORK) && !defined(SK_BUILD_FOR_ANDROID)
60    #define SK_BUILD_FOR_ANDROID
61#endif
62
63//////////////////////////////////////////////////////////////////////
64
65#if !defined(SK_DEBUG) && !defined(SK_RELEASE)
66    #ifdef NDEBUG
67        #define SK_RELEASE
68    #else
69        #define SK_DEBUG
70    #endif
71#endif
72
73#ifdef SK_BUILD_FOR_WIN32
74    #if !defined(SK_RESTRICT)
75        #define SK_RESTRICT __restrict
76    #endif
77    #if !defined(SK_WARN_UNUSED_RESULT)
78        #define SK_WARN_UNUSED_RESULT
79    #endif
80#endif
81
82//////////////////////////////////////////////////////////////////////
83
84#if !defined(SK_RESTRICT)
85    #define SK_RESTRICT __restrict__
86#endif
87
88#if !defined(SK_WARN_UNUSED_RESULT)
89    #define SK_WARN_UNUSED_RESULT __attribute__((warn_unused_result))
90#endif
91
92//////////////////////////////////////////////////////////////////////
93
94#if !defined(SK_CPU_BENDIAN) && !defined(SK_CPU_LENDIAN)
95    #if defined (__ppc__) || defined(__PPC__) || defined(__ppc64__) \
96        || defined(__PPC64__)
97        #define SK_CPU_BENDIAN
98    #else
99        #define SK_CPU_LENDIAN
100    #endif
101#endif
102
103//////////////////////////////////////////////////////////////////////
104
105/**
106 *  SK_CPU_SSE_LEVEL
107 *
108 *  If defined, SK_CPU_SSE_LEVEL should be set to the highest supported level.
109 *  On non-intel CPU this should be undefined.
110 */
111
112#define SK_CPU_SSE_LEVEL_SSE1     10
113#define SK_CPU_SSE_LEVEL_SSE2     20
114#define SK_CPU_SSE_LEVEL_SSE3     30
115#define SK_CPU_SSE_LEVEL_SSSE3    31
116
117// Are we in GCC?
118#ifndef SK_CPU_SSE_LEVEL
119    #if defined(__SSE2__)
120        #define SK_CPU_SSE_LEVEL    SK_CPU_SSE_LEVEL_SSE2
121    #elif defined(__SSE3__)
122        #define SK_CPU_SSE_LEVEL    SK_CPU_SSE_LEVEL_SSE3
123    #elif defined(__SSSE3__)
124        #define SK_CPU_SSE_LEVEL    SK_CPU_SSE_LEVEL_SSSE3
125    #endif
126#endif
127
128// Are we in VisualStudio?
129#ifndef SK_CPU_SSE_LEVEL
130    #if defined (_M_IX86_FP)
131        #if _M_IX86_FP == 1
132            #define SK_CPU_SSE_LEVEL    SK_CPU_SSE_LEVEL_SSE1
133        #elif _M_IX86_FP >= 2
134            #define SK_CPU_SSE_LEVEL    SK_CPU_SSE_LEVEL_SSE2
135        #endif
136    #endif
137#endif
138
139// 64bit intel guarantees at least SSE2
140#if defined(__x86_64__) || defined(_WIN64)
141    #if !defined(SK_CPU_SSE_LEVEL) || (SK_CPU_SSE_LEVEL < SK_CPU_SSE_LEVEL_SSE2)
142        #undef SK_CPU_SSE_LEVEL
143        #define SK_CPU_SSE_LEVEL    SK_CPU_SSE_LEVEL_SSE2
144    #endif
145#endif
146
147// Android x86 NDK ABI requires SSE3 support
148#if defined(SK_BUILD_FOR_ANDROID)
149    #undef SK_CPU_SSE_LEVEL
150    #define SK_CPU_SSE_LEVEL        SK_CPU_SSE_LEVEL_SSE3
151#endif
152
153//////////////////////////////////////////////////////////////////////
154// ARM defines
155
156#if defined(__arm__) && (!defined(__APPLE__) || !TARGET_IPHONE_SIMULATOR)
157    #define SK_CPU_ARM
158
159    #if defined(__GNUC__)
160        #if defined(__ARM_ARCH_7__) || defined(__ARM_ARCH_7A__) \
161                || defined(__ARM_ARCH_7R__) || defined(__ARM_ARCH_7M__) \
162                || defined(__ARM_ARCH_7EM__) || defined(_ARM_ARCH_7)
163            #define SK_ARM_ARCH 7
164        #elif defined(__ARM_ARCH_6__) || defined(__ARM_ARCH_6J__) \
165                || defined(__ARM_ARCH_6K__) || defined(__ARM_ARCH_6Z__) \
166                || defined(__ARM_ARCH_6ZK__) || defined(__ARM_ARCH_6T2__) \
167                || defined(__ARM_ARCH_6M__) || defined(_ARM_ARCH_6)
168            #define SK_ARM_ARCH 6
169        #elif defined(__ARM_ARCH_5__) || defined(__ARM_ARCH_5T__) \
170                || defined(__ARM_ARCH_5E__) || defined(__ARM_ARCH_5TE__) \
171                || defined(__ARM_ARCH_5TEJ__) || defined(_ARM_ARCH_5)
172            #define SK_ARM_ARCH 5
173        #elif defined(__ARM_ARCH_4__) || defined(__ARM_ARCH_4T__) || defined(_ARM_ARCH_4)
174            #define SK_ARM_ARCH 4
175        #else
176            #define SK_ARM_ARCH 3
177        #endif
178
179        #if defined(__thumb2__) && (SK_ARM_ARCH >= 6) \
180                || !defined(__thumb__) && ((SK_ARM_ARCH > 5) || defined(__ARM_ARCH_5E__) \
181                || defined(__ARM_ARCH_5TE__) || defined(__ARM_ARCH_5TEJ__))
182            #define SK_ARM_HAS_EDSP
183        #endif
184    #endif
185#endif
186
187//////////////////////////////////////////////////////////////////////
188
189#if !defined(SKIA_IMPLEMENTATION)
190    #define SKIA_IMPLEMENTATION 0
191#endif
192
193#if defined(SKIA_DLL)
194    #if defined(WIN32)
195        #if SKIA_IMPLEMENTATION
196            #define SK_API __declspec(dllexport)
197        #else
198            #define SK_API __declspec(dllimport)
199        #endif
200    #else
201        #define SK_API __attribute__((visibility("default")))
202    #endif
203#else
204    #define SK_API
205#endif
206
207//////////////////////////////////////////////////////////////////////
208
209/**
210 * Use SK_PURE_FUNC as an attribute to indicate that a function's
211 * return value only depends on the value of its parameters. This
212 * can help the compiler optimize out successive calls.
213 *
214 * Usage:
215 *      void  function(int params)  SK_PURE_FUNC;
216 */
217#if defined(__GNUC__)
218#  define  SK_PURE_FUNC  __attribute__((pure))
219#else
220#  define  SK_PURE_FUNC  /* nothing */
221#endif
222
223//////////////////////////////////////////////////////////////////////
224
225/**
226 * SK_HAS_ATTRIBUTE(<name>) should return true iff the compiler
227 * supports __attribute__((<name>)). Mostly important because
228 * Clang doesn't support all of GCC attributes.
229 */
230#if defined(__has_attribute)
231#   define SK_HAS_ATTRIBUTE(x) __has_attribute(x)
232#elif defined(__GNUC__)
233#   define SK_HAS_ATTRIBUTE(x) 1
234#else
235#   define SK_HAS_ATTRIBUTE(x) 0
236#endif
237
238/**
239 * SK_ATTRIBUTE_OPTIMIZE_O1 can be used as a function attribute
240 * to specify individual optimization level of -O1, if the compiler
241 * supports it.
242 *
243 * NOTE: Clang/ARM (r161757) does not support the 'optimize' attribute.
244 */
245#if SK_HAS_ATTRIBUTE(optimize)
246#   define SK_ATTRIBUTE_OPTIMIZE_O1 __attribute__((optimize("O1")))
247#else
248#   define SK_ATTRIBUTE_OPTIMIZE_O1 /* nothing */
249#endif
250
251#endif
252