SkPreConfig.h revision 0936c01a39b757500345b81fdd3be1716602d8e1 
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
58#if !defined(SK_DEBUG) && !defined(SK_RELEASE)
59    #ifdef NDEBUG
60        #define SK_RELEASE
61    #else
62        #define SK_DEBUG
63    #endif
64#endif
65
66#ifdef SK_BUILD_FOR_WIN32
67    #if !defined(SK_RESTRICT)
68        #define SK_RESTRICT __restrict
69    #endif
70    #if !defined(SK_WARN_UNUSED_RESULT)
71        #define SK_WARN_UNUSED_RESULT
72    #endif
73    #include "sk_stdint.h"
74#endif
75
76//////////////////////////////////////////////////////////////////////
77
78#if !defined(SK_RESTRICT)
79    #define SK_RESTRICT __restrict__
80#endif
81
82#if !defined(SK_WARN_UNUSED_RESULT)
83    #define SK_WARN_UNUSED_RESULT __attribute__((warn_unused_result))
84#endif
85
86//////////////////////////////////////////////////////////////////////
87
88#if !defined(SK_SCALAR_IS_FLOAT) && !defined(SK_SCALAR_IS_FIXED)
89    #define SK_SCALAR_IS_FLOAT
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#ifndef SK_MMAP_SUPPORT
106    #ifdef SK_BUILD_FOR_WIN32
107        // by default, if we're windows, we assume we don't have mmap
108        #define SK_MMAP_SUPPORT 0
109    #else
110        #define SK_MMAP_SUPPORT 1
111    #endif
112#endif
113
114//////////////////////////////////////////////////////////////////////
115
116/**
117 *  SK_CPU_SSE_LEVEL
118 *
119 *  If defined, SK_CPU_SSE_LEVEL should be set to the highest supported level.
120 *  On non-intel CPU this should be undefined.
121 */
122
123#define SK_CPU_SSE_LEVEL_SSE1     10
124#define SK_CPU_SSE_LEVEL_SSE2     20
125#define SK_CPU_SSE_LEVEL_SSE3     30
126#define SK_CPU_SSE_LEVEL_SSSE3    31
127
128// Are we in GCC?
129#ifndef SK_CPU_SSE_LEVEL
130    #if defined(__SSE2__)
131        #define SK_CPU_SSE_LEVEL    SK_CPU_SSE_LEVEL_SSE2
132    #elif defined(__SSE3__)
133        #define SK_CPU_SSE_LEVEL    SK_CPU_SSE_LEVEL_SSE3
134    #elif defined(__SSSE3__)
135        #define SK_CPU_SSE_LEVEL    SK_CPU_SSE_LEVEL_SSSE3
136    #endif
137#endif
138
139// Are we in VisualStudio?
140#ifndef SK_CPU_SSE_LEVEL
141    #if _M_IX86_FP == 1
142        #define SK_CPU_SSE_LEVEL    SK_CPU_SSE_LEVEL_SSE1
143    #elif _M_IX86_FP >= 2
144        #define SK_CPU_SSE_LEVEL    SK_CPU_SSE_LEVEL_SSE2
145    #endif
146#endif
147
148// 64bit intel guarantees at least SSE2
149#if defined(__x86_64__) || defined(_WIN64)
150    #if !defined(SK_CPU_SSE_LEVEL) || (SK_CPU_SSE_LEVEL < SK_CPU_SSE_LEVEL_SSE2)
151        #undef SK_CPU_SSE_LEVEL
152        #define SK_CPU_SSE_LEVEL    SK_CPU_SSE_LEVEL_SSE2
153    #endif
154#endif
155
156//////////////////////////////////////////////////////////////////////
157// ARM defines
158
159#if defined(__arm__) && (!defined(__APPLE__) || !TARGET_IPHONE_SIMULATOR)
160    #define SK_CPU_ARM
161
162    #if defined(__GNUC__)
163        #if defined(__ARM_ARCH_7__) || defined(__ARM_ARCH_7A__) \
164                || defined(__ARM_ARCH_7R__) || defined(__ARM_ARCH_7M__) \
165                || defined(__ARM_ARCH_7EM__) || defined(_ARM_ARCH_7)
166            #define SK_ARM_ARCH 7
167        #elif defined(__ARM_ARCH_6__) || defined(__ARM_ARCH_6J__) \
168                || defined(__ARM_ARCH_6K__) || defined(__ARM_ARCH_6Z__) \
169                || defined(__ARM_ARCH_6ZK__) || defined(__ARM_ARCH_6T2__) \
170                || defined(__ARM_ARCH_6M__) || defined(_ARM_ARCH_6)
171            #define SK_ARM_ARCH 6
172        #elif defined(__ARM_ARCH_5__) || defined(__ARM_ARCH_5T__) \
173                || defined(__ARM_ARCH_5E__) || defined(__ARM_ARCH_5TE__) \
174                || defined(__ARM_ARCH_5TEJ__) || defined(_ARM_ARCH_5)
175            #define SK_ARM_ARCH 5
176        #elif defined(__ARM_ARCH_4__) || defined(__ARM_ARCH_4T__) || defined(_ARM_ARCH_4)
177            #define SK_ARM_ARCH 4
178        #else
179            #define SK_ARM_ARCH 3
180        #endif
181
182        #if defined(__thumb2__) && (SK_ARM_ARCH >= 6) \
183                || !defined(__thumb__) && ((SK_ARM_ARCH > 5) || defined(__ARM_ARCH_5E__) \
184                || defined(__ARM_ARCH_5TE__) || defined(__ARM_ARCH_5TEJ__))
185            #define SK_ARM_HAS_EDSP
186        #endif
187    #endif
188#endif
189
190//////////////////////////////////////////////////////////////////////
191
192#if !defined(SKIA_IMPLEMENTATION)
193    #define SKIA_IMPLEMENTATION 0
194#endif
195
196#if defined(SKIA_DLL)
197    #if defined(WIN32)
198        #if SKIA_IMPLEMENTATION
199            #define SK_API __declspec(dllexport)
200        #else
201            #define SK_API __declspec(dllimport)
202        #endif
203    #else
204        #define SK_API __attribute__((visibility("default")))
205    #endif
206#else
207    #define SK_API
208#endif
209
210//////////////////////////////////////////////////////////////////////
211
212/**
213 * Use SK_PURE_FUNC as an attribute to indicate that a function's
214 * return value only depends on the value of its parameters. This
215 * can help the compiler optimize out successive calls.
216 *
217 * Usage:
218 *      void  function(int params)  SK_PURE_FUNC;
219 */
220#if defined(__GNUC__)
221#  define  SK_PURE_FUNC  __attribute__((pure))
222#else
223#  define  SK_PURE_FUNC  /* nothing */
224#endif
225
226//////////////////////////////////////////////////////////////////////
227
228/**
229 * SK_HAS_ATTRIBUTE(<name>) should return true iff the compiler
230 * supports __attribute__((<name>)). Mostly important because
231 * Clang doesn't support all of GCC attributes.
232 */
233#if defined(__has_attribute)
234#   define SK_HAS_ATTRIBUTE(x) __has_attribute(x)
235#elif defined(__GNUC__)
236#   define SK_HAS_ATTRIBUTE(x) 1
237#else
238#   define SK_HAS_ATTRIBUTE(x) 0
239#endif
240
241/**
242 * SK_ATTRIBUTE_OPTIMIZE_O1 can be used as a function attribute
243 * to specify individual optimization level of -O1, if the compiler
244 * supports it.
245 *
246 * NOTE: Clang/ARM (r161757) does not support the 'optimize' attribute.
247 */
248#if SK_HAS_ATTRIBUTE(optimize)
249#   define SK_ATTRIBUTE_OPTIMIZE_O1 __attribute__((optimize("O1")))
250#else
251#   define SK_ATTRIBUTE_OPTIMIZE_O1 /* nothing */
252#endif
253
254#endif
255