SkPreConfig.h revision 4469938e92d779dff05e745559e67907bbf21e78 
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_SCALAR_IS_FLOAT) && !defined(SK_SCALAR_IS_FIXED)
95    #define SK_SCALAR_IS_FLOAT
96#endif
97
98//////////////////////////////////////////////////////////////////////
99
100#if !defined(SK_CPU_BENDIAN) && !defined(SK_CPU_LENDIAN)
101    #if defined (__ppc__) || defined(__PPC__) || defined(__ppc64__) \
102        || defined(__PPC64__)
103        #define SK_CPU_BENDIAN
104    #else
105        #define SK_CPU_LENDIAN
106    #endif
107#endif
108
109//////////////////////////////////////////////////////////////////////
110
111/**
112 *  SK_CPU_SSE_LEVEL
113 *
114 *  If defined, SK_CPU_SSE_LEVEL should be set to the highest supported level.
115 *  On non-intel CPU this should be undefined.
116 */
117
118#define SK_CPU_SSE_LEVEL_SSE1     10
119#define SK_CPU_SSE_LEVEL_SSE2     20
120#define SK_CPU_SSE_LEVEL_SSE3     30
121#define SK_CPU_SSE_LEVEL_SSSE3    31
122
123// Are we in GCC?
124#ifndef SK_CPU_SSE_LEVEL
125    #if defined(__SSE2__)
126        #define SK_CPU_SSE_LEVEL    SK_CPU_SSE_LEVEL_SSE2
127    #elif defined(__SSE3__)
128        #define SK_CPU_SSE_LEVEL    SK_CPU_SSE_LEVEL_SSE3
129    #elif defined(__SSSE3__)
130        #define SK_CPU_SSE_LEVEL    SK_CPU_SSE_LEVEL_SSSE3
131    #endif
132#endif
133
134// Are we in VisualStudio?
135#ifndef SK_CPU_SSE_LEVEL
136    #if _M_IX86_FP == 1
137        #define SK_CPU_SSE_LEVEL    SK_CPU_SSE_LEVEL_SSE1
138    #elif _M_IX86_FP >= 2
139        #define SK_CPU_SSE_LEVEL    SK_CPU_SSE_LEVEL_SSE2
140    #endif
141#endif
142
143// 64bit intel guarantees at least SSE2
144#if defined(__x86_64__) || defined(_WIN64)
145    #if !defined(SK_CPU_SSE_LEVEL) || (SK_CPU_SSE_LEVEL < SK_CPU_SSE_LEVEL_SSE2)
146        #undef SK_CPU_SSE_LEVEL
147        #define SK_CPU_SSE_LEVEL    SK_CPU_SSE_LEVEL_SSE2
148    #endif
149#endif
150
151//////////////////////////////////////////////////////////////////////
152// ARM defines
153
154#if defined(__arm__) && (!defined(__APPLE__) || !TARGET_IPHONE_SIMULATOR)
155    #define SK_CPU_ARM
156
157    #if defined(__GNUC__)
158        #if defined(__ARM_ARCH_7__) || defined(__ARM_ARCH_7A__) \
159                || defined(__ARM_ARCH_7R__) || defined(__ARM_ARCH_7M__) \
160                || defined(__ARM_ARCH_7EM__) || defined(_ARM_ARCH_7)
161            #define SK_ARM_ARCH 7
162        #elif defined(__ARM_ARCH_6__) || defined(__ARM_ARCH_6J__) \
163                || defined(__ARM_ARCH_6K__) || defined(__ARM_ARCH_6Z__) \
164                || defined(__ARM_ARCH_6ZK__) || defined(__ARM_ARCH_6T2__) \
165                || defined(__ARM_ARCH_6M__) || defined(_ARM_ARCH_6)
166            #define SK_ARM_ARCH 6
167        #elif defined(__ARM_ARCH_5__) || defined(__ARM_ARCH_5T__) \
168                || defined(__ARM_ARCH_5E__) || defined(__ARM_ARCH_5TE__) \
169                || defined(__ARM_ARCH_5TEJ__) || defined(_ARM_ARCH_5)
170            #define SK_ARM_ARCH 5
171        #elif defined(__ARM_ARCH_4__) || defined(__ARM_ARCH_4T__) || defined(_ARM_ARCH_4)
172            #define SK_ARM_ARCH 4
173        #else
174            #define SK_ARM_ARCH 3
175        #endif
176
177        #if defined(__thumb2__) && (SK_ARM_ARCH >= 6) \
178                || !defined(__thumb__) && ((SK_ARM_ARCH > 5) || defined(__ARM_ARCH_5E__) \
179                || defined(__ARM_ARCH_5TE__) || defined(__ARM_ARCH_5TEJ__))
180            #define SK_ARM_HAS_EDSP
181        #endif
182    #endif
183#endif
184
185//////////////////////////////////////////////////////////////////////
186
187#if !defined(SKIA_IMPLEMENTATION)
188    #define SKIA_IMPLEMENTATION 0
189#endif
190
191#if defined(SKIA_DLL)
192    #if defined(WIN32)
193        #if SKIA_IMPLEMENTATION
194            #define SK_API __declspec(dllexport)
195        #else
196            #define SK_API __declspec(dllimport)
197        #endif
198    #else
199        #define SK_API __attribute__((visibility("default")))
200    #endif
201#else
202    #define SK_API
203#endif
204
205//////////////////////////////////////////////////////////////////////
206
207/**
208 * Use SK_PURE_FUNC as an attribute to indicate that a function's
209 * return value only depends on the value of its parameters. This
210 * can help the compiler optimize out successive calls.
211 *
212 * Usage:
213 *      void  function(int params)  SK_PURE_FUNC;
214 */
215#if defined(__GNUC__)
216#  define  SK_PURE_FUNC  __attribute__((pure))
217#else
218#  define  SK_PURE_FUNC  /* nothing */
219#endif
220
221//////////////////////////////////////////////////////////////////////
222
223/**
224 * SK_HAS_ATTRIBUTE(<name>) should return true iff the compiler
225 * supports __attribute__((<name>)). Mostly important because
226 * Clang doesn't support all of GCC attributes.
227 */
228#if defined(__has_attribute)
229#   define SK_HAS_ATTRIBUTE(x) __has_attribute(x)
230#elif defined(__GNUC__)
231#   define SK_HAS_ATTRIBUTE(x) 1
232#else
233#   define SK_HAS_ATTRIBUTE(x) 0
234#endif
235
236/**
237 * SK_ATTRIBUTE_OPTIMIZE_O1 can be used as a function attribute
238 * to specify individual optimization level of -O1, if the compiler
239 * supports it.
240 *
241 * NOTE: Clang/ARM (r161757) does not support the 'optimize' attribute.
242 */
243#if SK_HAS_ATTRIBUTE(optimize)
244#   define SK_ATTRIBUTE_OPTIMIZE_O1 __attribute__((optimize("O1")))
245#else
246#   define SK_ATTRIBUTE_OPTIMIZE_O1 /* nothing */
247#endif
248
249#endif
250