SkPreConfig.h revision aa2d35144b92e71f377942468080547d00b52868 
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(__PPC__) || defined(__ppc64__) \
103        || defined(__PPC64__)
104        #define SK_CPU_BENDIAN
105    #else
106        #define SK_CPU_LENDIAN
107    #endif
108#endif
109
110//////////////////////////////////////////////////////////////////////
111
112#ifndef SK_MMAP_SUPPORT
113    #ifdef SK_BUILD_FOR_WIN32
114        // by default, if we're windows, we assume we don't have mmap
115        #define SK_MMAP_SUPPORT 0
116    #else
117        #define SK_MMAP_SUPPORT 1
118    #endif
119#endif
120
121//////////////////////////////////////////////////////////////////////
122
123/**
124 *  SK_CPU_SSE_LEVEL
125 *
126 *  If defined, SK_CPU_SSE_LEVEL should be set to the highest supported level.
127 *  On non-intel CPU this should be undefined.
128 */
129
130#define SK_CPU_SSE_LEVEL_SSE1     10
131#define SK_CPU_SSE_LEVEL_SSE2     20
132#define SK_CPU_SSE_LEVEL_SSE3     30
133#define SK_CPU_SSE_LEVEL_SSSE3    31
134
135// Are we in GCC?
136#ifndef SK_CPU_SSE_LEVEL
137    #if defined(__SSE2__)
138        #define SK_CPU_SSE_LEVEL    SK_CPU_SSE_LEVEL_SSE2
139    #elif defined(__SSE3__)
140        #define SK_CPU_SSE_LEVEL    SK_CPU_SSE_LEVEL_SSE3
141    #elif defined(__SSSE3__)
142        #define SK_CPU_SSE_LEVEL    SK_CPU_SSE_LEVEL_SSSE3
143    #endif
144#endif
145
146// Are we in VisualStudio?
147#ifndef SK_CPU_SSE_LEVEL
148    #if _M_IX86_FP == 1
149        #define SK_CPU_SSE_LEVEL    SK_CPU_SSE_LEVEL_SSE1
150    #elif _M_IX86_FP >= 2
151        #define SK_CPU_SSE_LEVEL    SK_CPU_SSE_LEVEL_SSE2
152    #endif
153#endif
154
155// 64bit intel guarantees at least SSE2
156#if defined(__x86_64__) || defined(_WIN64)
157    #if !defined(SK_CPU_SSE_LEVEL) || (SK_CPU_SSE_LEVEL < SK_CPU_SSE_LEVEL_SSE2)
158        #undef SK_CPU_SSE_LEVEL
159        #define SK_CPU_SSE_LEVEL    SK_CPU_SSE_LEVEL_SSE2
160    #endif
161#endif
162
163//////////////////////////////////////////////////////////////////////
164// ARM defines
165
166#if defined(__arm__) && (!defined(__APPLE__) || !TARGET_IPHONE_SIMULATOR)
167    #define SK_CPU_ARM
168
169    #if defined(__GNUC__)
170        #if defined(__ARM_ARCH_7__) || defined(__ARM_ARCH_7A__) \
171                || defined(__ARM_ARCH_7R__) || defined(__ARM_ARCH_7M__) \
172                || defined(__ARM_ARCH_7EM__) || defined(_ARM_ARCH_7)
173            #define SK_ARM_ARCH 7
174        #elif defined(__ARM_ARCH_6__) || defined(__ARM_ARCH_6J__) \
175                || defined(__ARM_ARCH_6K__) || defined(__ARM_ARCH_6Z__) \
176                || defined(__ARM_ARCH_6ZK__) || defined(__ARM_ARCH_6T2__) \
177                || defined(__ARM_ARCH_6M__) || defined(_ARM_ARCH_6)
178            #define SK_ARM_ARCH 6
179        #elif defined(__ARM_ARCH_5__) || defined(__ARM_ARCH_5T__) \
180                || defined(__ARM_ARCH_5E__) || defined(__ARM_ARCH_5TE__) \
181                || defined(__ARM_ARCH_5TEJ__) || defined(_ARM_ARCH_5)
182            #define SK_ARM_ARCH 5
183        #elif defined(__ARM_ARCH_4__) || defined(__ARM_ARCH_4T__) || defined(_ARM_ARCH_4)
184            #define SK_ARM_ARCH 4
185        #else
186            #define SK_ARM_ARCH 3
187        #endif
188
189        #if defined(__thumb2__) && (SK_ARM_ARCH >= 6) \
190                || !defined(__thumb__) && ((SK_ARM_ARCH > 5) || defined(__ARM_ARCH_5E__) \
191                || defined(__ARM_ARCH_5TE__) || defined(__ARM_ARCH_5TEJ__))
192            #define SK_ARM_HAS_EDSP
193        #endif
194    #endif
195#endif
196
197//////////////////////////////////////////////////////////////////////
198
199#if !defined(SKIA_IMPLEMENTATION)
200    #define SKIA_IMPLEMENTATION 0
201#endif
202
203#if defined(SKIA_DLL)
204    #if defined(WIN32)
205        #if SKIA_IMPLEMENTATION
206            #define SK_API __declspec(dllexport)
207        #else
208            #define SK_API __declspec(dllimport)
209        #endif
210    #else
211        #define SK_API __attribute__((visibility("default")))
212    #endif
213#else
214    #define SK_API
215#endif
216
217//////////////////////////////////////////////////////////////////////
218
219/**
220 * Use SK_PURE_FUNC as an attribute to indicate that a function's
221 * return value only depends on the value of its parameters. This
222 * can help the compiler optimize out successive calls.
223 *
224 * Usage:
225 *      void  function(int params)  SK_PURE_FUNC;
226 */
227#if defined(__GNUC__)
228#  define  SK_PURE_FUNC  __attribute__((pure))
229#else
230#  define  SK_PURE_FUNC  /* nothing */
231#endif
232
233//////////////////////////////////////////////////////////////////////
234
235/**
236 * SK_HAS_ATTRIBUTE(<name>) should return true iff the compiler
237 * supports __attribute__((<name>)). Mostly important because
238 * Clang doesn't support all of GCC attributes.
239 */
240#if defined(__has_attribute)
241#   define SK_HAS_ATTRIBUTE(x) __has_attribute(x)
242#elif defined(__GNUC__)
243#   define SK_HAS_ATTRIBUTE(x) 1
244#else
245#   define SK_HAS_ATTRIBUTE(x) 0
246#endif
247
248/**
249 * SK_ATTRIBUTE_OPTIMIZE_O1 can be used as a function attribute
250 * to specify individual optimization level of -O1, if the compiler
251 * supports it.
252 *
253 * NOTE: Clang/ARM (r161757) does not support the 'optimize' attribute.
254 */
255#if SK_HAS_ATTRIBUTE(optimize)
256#   define SK_ATTRIBUTE_OPTIMIZE_O1 __attribute__((optimize("O1")))
257#else
258#   define SK_ATTRIBUTE_OPTIMIZE_O1 /* nothing */
259#endif
260
261#endif
262