SkPreConfig.h revision 38bad32cf5297ec6908620fd174cd08c937d331a 
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//////////////////////////////////////////////////////////////////////
18
19#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)
20
21    #ifdef __APPLE__
22        #include "TargetConditionals.h"
23    #endif
24
25    #if defined(PALMOS_SDK_VERSION)
26        #define SK_BUILD_FOR_PALM
27    #elif defined(UNDER_CE)
28        #define SK_BUILD_FOR_WINCE
29    #elif defined(WIN32)
30        #define SK_BUILD_FOR_WIN32
31    #elif defined(__SYMBIAN32__)
32        #define SK_BUILD_FOR_WIN32
33    #elif defined(ANDROID)
34        #define SK_BUILD_FOR_ANDROID
35    #elif defined(linux) || defined(__FreeBSD__) || defined(__OpenBSD__) || \
36          defined(__sun) || defined(__NetBSD__) || defined(__DragonFly__) || \
37          defined(__GLIBC__) || defined(__GNU__)
38        #define SK_BUILD_FOR_UNIX
39    #elif TARGET_OS_IPHONE || TARGET_IPHONE_SIMULATOR
40        #define SK_BUILD_FOR_IOS
41    #else
42        #define SK_BUILD_FOR_MAC
43    #endif
44
45#endif
46
47/* Even if the user only defined the framework variant we still need to build
48 * the default (NDK-compliant) Android code. Therefore, when attempting to
49 * include/exclude something from the framework variant check first that we are
50 * building for Android then check the status of the framework define.
51 */
52#if defined(SK_BUILD_FOR_ANDROID_FRAMEWORK) && !defined(SK_BUILD_FOR_ANDROID)
53    #define SK_BUILD_FOR_ANDROID
54#endif
55
56
57// USE_CHROMIUM_SKIA is defined when building Skia for the Chromium
58// browser.
59#if defined(USE_CHROMIUM_SKIA)
60    #define SK_BUILD_FOR_CHROMIUM
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    #include "sk_stdint.h"
81#endif
82
83//////////////////////////////////////////////////////////////////////
84
85#if !defined(SK_RESTRICT)
86    #define SK_RESTRICT __restrict__
87#endif
88
89#if !defined(SK_WARN_UNUSED_RESULT)
90    #define SK_WARN_UNUSED_RESULT __attribute__((warn_unused_result))
91#endif
92
93//////////////////////////////////////////////////////////////////////
94
95#if !defined(SK_SCALAR_IS_FLOAT) && !defined(SK_SCALAR_IS_FIXED)
96    #define SK_SCALAR_IS_FLOAT
97#endif
98
99//////////////////////////////////////////////////////////////////////
100
101#if !defined(SK_CPU_BENDIAN) && !defined(SK_CPU_LENDIAN)
102    #if defined (__ppc__) || defined(__ppc64__)
103        #define SK_CPU_BENDIAN
104    #else
105        #define SK_CPU_LENDIAN
106    #endif
107#endif
108
109//////////////////////////////////////////////////////////////////////
110
111#ifndef SK_MMAP_SUPPORT
112    #ifdef SK_BUILD_FOR_WIN32
113        // by default, if we're windows, we assume we don't have mmap
114        #define SK_MMAP_SUPPORT 0
115    #else
116        #define SK_MMAP_SUPPORT 1
117    #endif
118#endif
119
120//////////////////////////////////////////////////////////////////////
121
122/**
123 *  SK_CPU_SSE_LEVEL
124 *
125 *  If defined, SK_CPU_SSE_LEVEL should be set to the highest supported level.
126 *  On non-intel CPU this should be undefined.
127 */
128
129#define SK_CPU_SSE_LEVEL_SSE1     10
130#define SK_CPU_SSE_LEVEL_SSE2     20
131#define SK_CPU_SSE_LEVEL_SSE3     30
132#define SK_CPU_SSE_LEVEL_SSSE3    31
133
134// Are we in GCC?
135#ifndef SK_CPU_SSE_LEVEL
136    #if defined(__SSE2__)
137        #define SK_CPU_SSE_LEVEL    SK_CPU_SSE_LEVEL_SSE2
138    #elif defined(__SSE3__)
139        #define SK_CPU_SSE_LEVEL    SK_CPU_SSE_LEVEL_SSE3
140    #elif defined(__SSSE3__)
141        #define SK_CPU_SSE_LEVEL    SK_CPU_SSE_LEVEL_SSSE3
142    #endif
143#endif
144
145// Are we in VisualStudio?
146#ifndef SK_CPU_SSE_LEVEL
147    #if _M_IX86_FP == 1
148        #define SK_CPU_SSE_LEVEL    SK_CPU_SSE_LEVEL_SSE1
149    #elif _M_IX86_FP >= 2
150        #define SK_CPU_SSE_LEVEL    SK_CPU_SSE_LEVEL_SSE2
151    #endif
152#endif
153
154// 64bit intel guarantees at least SSE2
155#if defined(__x86_64__) || defined(_WIN64)
156    #if !defined(SK_CPU_SSE_LEVEL) || (SK_CPU_SSE_LEVEL < SK_CPU_SSE_LEVEL_SSE2)
157        #undef SK_CPU_SSE_LEVEL
158        #define SK_CPU_SSE_LEVEL    SK_CPU_SSE_LEVEL_SSE2
159    #endif
160#endif
161
162//////////////////////////////////////////////////////////////////////
163// ARM defines
164
165#if defined(__arm__) && (!defined(__APPLE__) || !TARGET_IPHONE_SIMULATOR)
166    #define SK_CPU_ARM
167
168    #if defined(__GNUC__)
169        #if defined(__ARM_ARCH_7__) || defined(__ARM_ARCH_7A__) \
170                || defined(__ARM_ARCH_7R__) || defined(__ARM_ARCH_7M__) \
171                || defined(__ARM_ARCH_7EM__) || defined(_ARM_ARCH_7)
172            #define SK_ARM_ARCH 7
173        #elif defined(__ARM_ARCH_6__) || defined(__ARM_ARCH_6J__) \
174                || defined(__ARM_ARCH_6K__) || defined(__ARM_ARCH_6Z__) \
175                || defined(__ARM_ARCH_6ZK__) || defined(__ARM_ARCH_6T2__) \
176                || defined(__ARM_ARCH_6M__) || defined(_ARM_ARCH_6)
177            #define SK_ARM_ARCH 6
178        #elif defined(__ARM_ARCH_5__) || defined(__ARM_ARCH_5T__) \
179                || defined(__ARM_ARCH_5E__) || defined(__ARM_ARCH_5TE__) \
180                || defined(__ARM_ARCH_5TEJ__) || defined(_ARM_ARCH_5)
181            #define SK_ARM_ARCH 5
182        #elif defined(__ARM_ARCH_4__) || defined(__ARM_ARCH_4T__) || defined(_ARM_ARCH_4)
183            #define SK_ARM_ARCH 4
184        #else
185            #define SK_ARM_ARCH 3
186        #endif
187
188        #if defined(__thumb2__) && (SK_ARM_ARCH >= 6) \
189                || !defined(__thumb__) && ((SK_ARM_ARCH > 5) || defined(__ARM_ARCH_5E__) \
190                || defined(__ARM_ARCH_5TE__) || defined(__ARM_ARCH_5TEJ__))
191            #define SK_ARM_HAS_EDSP
192        #endif
193    #endif
194#endif
195
196//////////////////////////////////////////////////////////////////////
197
198#if !defined(SKIA_IMPLEMENTATION)
199    #define SKIA_IMPLEMENTATION 0
200#endif
201
202#if defined(SKIA_DLL)
203    #if defined(WIN32)
204        #if SKIA_IMPLEMENTATION
205            #define SK_API __declspec(dllexport)
206        #else
207            #define SK_API __declspec(dllimport)
208        #endif
209    #else
210        #define SK_API __attribute__((visibility("default")))
211    #endif
212#else
213    #define SK_API
214#endif
215
216//////////////////////////////////////////////////////////////////////
217
218/**
219 * Use SK_PURE_FUNC as an attribute to indicate that a function's
220 * return value only depends on the value of its parameters. This
221 * can help the compiler optimize out successive calls.
222 *
223 * Usage:
224 *      void  function(int params)  SK_PURE_FUNC;
225 */
226#if defined(__GNUC__)
227#  define  SK_PURE_FUNC  __attribute__((pure))
228#else
229#  define  SK_PURE_FUNC  /* nothing */
230#endif
231
232//////////////////////////////////////////////////////////////////////
233
234/**
235 * SK_HAS_ATTRIBUTE(<name>) should return true iff the compiler
236 * supports __attribute__((<name>)). Mostly important because
237 * Clang doesn't support all of GCC attributes.
238 */
239#if defined(__has_attribute)
240#   define SK_HAS_ATTRIBUTE(x) __has_attribute(x)
241#elif defined(__GNUC__)
242#   define SK_HAS_ATTRIBUTE(x) 1
243#else
244#   define SK_HAS_ATTRIBUTE(x) 0
245#endif
246
247/**
248 * SK_ATTRIBUTE_OPTIMIZE_O1 can be used as a function attribute
249 * to specify individual optimization level of -O1, if the compiler
250 * supports it.
251 *
252 * NOTE: Clang/ARM (r161757) does not support the 'optimize' attribute.
253 */
254#if SK_HAS_ATTRIBUTE(optimize)
255#   define SK_ATTRIBUTE_OPTIMIZE_O1 __attribute__((optimize("O1")))
256#else
257#   define SK_ATTRIBUTE_OPTIMIZE_O1 /* nothing */
258#endif
259
260#endif
261