SkPreConfig.h revision 88a954335acc3e4737e7e08c86233a6b246299f3 
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    // These checks must be done in descending order to ensure we set the highest
120    // available SSE level.
121    #if defined(__SSSE3__)
122        #define SK_CPU_SSE_LEVEL    SK_CPU_SSE_LEVEL_SSSE3
123    #elif defined(__SSE3__)
124        #define SK_CPU_SSE_LEVEL    SK_CPU_SSE_LEVEL_SSE3
125    #elif defined(__SSE2__)
126        #define SK_CPU_SSE_LEVEL    SK_CPU_SSE_LEVEL_SSE2
127    #endif
128#endif
129
130// Are we in VisualStudio?
131#ifndef SK_CPU_SSE_LEVEL
132    // These checks must be done in descending order to ensure we set the highest
133    // available SSE level.
134    #if defined (_M_IX86_FP)
135        #if _M_IX86_FP >= 2
136            #define SK_CPU_SSE_LEVEL    SK_CPU_SSE_LEVEL_SSE2
137        #elif _M_IX86_FP == 1
138            #define SK_CPU_SSE_LEVEL    SK_CPU_SSE_LEVEL_SSE1
139        #endif
140    #endif
141#endif
142
143//////////////////////////////////////////////////////////////////////
144// ARM defines
145
146#if defined(__arm__) && (!defined(__APPLE__) || !TARGET_IPHONE_SIMULATOR)
147    #define SK_CPU_ARM
148
149    #if defined(__GNUC__)
150        #if defined(__ARM_ARCH_7__) || defined(__ARM_ARCH_7A__) \
151                || defined(__ARM_ARCH_7R__) || defined(__ARM_ARCH_7M__) \
152                || defined(__ARM_ARCH_7EM__) || defined(_ARM_ARCH_7)
153            #define SK_ARM_ARCH 7
154        #elif defined(__ARM_ARCH_6__) || defined(__ARM_ARCH_6J__) \
155                || defined(__ARM_ARCH_6K__) || defined(__ARM_ARCH_6Z__) \
156                || defined(__ARM_ARCH_6ZK__) || defined(__ARM_ARCH_6T2__) \
157                || defined(__ARM_ARCH_6M__) || defined(_ARM_ARCH_6)
158            #define SK_ARM_ARCH 6
159        #elif defined(__ARM_ARCH_5__) || defined(__ARM_ARCH_5T__) \
160                || defined(__ARM_ARCH_5E__) || defined(__ARM_ARCH_5TE__) \
161                || defined(__ARM_ARCH_5TEJ__) || defined(_ARM_ARCH_5)
162            #define SK_ARM_ARCH 5
163        #elif defined(__ARM_ARCH_4__) || defined(__ARM_ARCH_4T__) || defined(_ARM_ARCH_4)
164            #define SK_ARM_ARCH 4
165        #else
166            #define SK_ARM_ARCH 3
167        #endif
168
169        #if defined(__thumb2__) && (SK_ARM_ARCH >= 6) \
170                || !defined(__thumb__) && ((SK_ARM_ARCH > 5) || defined(__ARM_ARCH_5E__) \
171                || defined(__ARM_ARCH_5TE__) || defined(__ARM_ARCH_5TEJ__))
172            #define SK_ARM_HAS_EDSP
173        #endif
174    #endif
175#endif
176
177//////////////////////////////////////////////////////////////////////
178
179#if !defined(SKIA_IMPLEMENTATION)
180    #define SKIA_IMPLEMENTATION 0
181#endif
182
183#if defined(SKIA_DLL)
184    #if defined(WIN32)
185        #if SKIA_IMPLEMENTATION
186            #define SK_API __declspec(dllexport)
187        #else
188            #define SK_API __declspec(dllimport)
189        #endif
190    #else
191        #define SK_API __attribute__((visibility("default")))
192    #endif
193#else
194    #define SK_API
195#endif
196
197//////////////////////////////////////////////////////////////////////
198
199/**
200 * Use SK_PURE_FUNC as an attribute to indicate that a function's
201 * return value only depends on the value of its parameters. This
202 * can help the compiler optimize out successive calls.
203 *
204 * Usage:
205 *      void  function(int params)  SK_PURE_FUNC;
206 */
207#if defined(__GNUC__)
208#  define  SK_PURE_FUNC  __attribute__((pure))
209#else
210#  define  SK_PURE_FUNC  /* nothing */
211#endif
212
213//////////////////////////////////////////////////////////////////////
214
215/**
216 * SK_HAS_ATTRIBUTE(<name>) should return true iff the compiler
217 * supports __attribute__((<name>)). Mostly important because
218 * Clang doesn't support all of GCC attributes.
219 */
220#if defined(__has_attribute)
221#   define SK_HAS_ATTRIBUTE(x) __has_attribute(x)
222#elif defined(__GNUC__)
223#   define SK_HAS_ATTRIBUTE(x) 1
224#else
225#   define SK_HAS_ATTRIBUTE(x) 0
226#endif
227
228/**
229 * SK_ATTRIBUTE_OPTIMIZE_O1 can be used as a function attribute
230 * to specify individual optimization level of -O1, if the compiler
231 * supports it.
232 *
233 * NOTE: Clang/ARM (r161757) does not support the 'optimize' attribute.
234 */
235#if SK_HAS_ATTRIBUTE(optimize)
236#   define SK_ATTRIBUTE_OPTIMIZE_O1 __attribute__((optimize("O1")))
237#else
238#   define SK_ATTRIBUTE_OPTIMIZE_O1 /* nothing */
239#endif
240
241#endif
242