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defines.h
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1 //
2 // Copyright 2016 Pixar
3 //
4 // Licensed under the Apache License, Version 2.0 (the "Apache License")
5 // with the following modification; you may not use this file except in
6 // compliance with the Apache License and the following modification to it:
7 // Section 6. Trademarks. is deleted and replaced with:
8 //
9 // 6. Trademarks. This License does not grant permission to use the trade
10 // names, trademarks, service marks, or product names of the Licensor
11 // and its affiliates, except as required to comply with Section 4(c) of
12 // the License and to reproduce the content of the NOTICE file.
13 //
14 // You may obtain a copy of the Apache License at
15 //
16 // http://www.apache.org/licenses/LICENSE-2.0
17 //
18 // Unless required by applicable law or agreed to in writing, software
19 // distributed under the Apache License with the above modification is
20 // distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
21 // KIND, either express or implied. See the Apache License for the specific
22 // language governing permissions and limitations under the Apache License.
23 //
24 #ifndef PXR_BASE_ARCH_DEFINES_H
25 #define PXR_BASE_ARCH_DEFINES_H
26 
27 //
28 // OS
29 //
30 
31 #if defined(__linux__)
32 #define ARCH_OS_LINUX
33 #elif defined(__APPLE__)
34 #include "TargetConditionals.h"
35 #define ARCH_OS_DARWIN
36 #if TARGET_OS_IPHONE
37 #define ARCH_OS_IOS
38 #else
39 #define ARCH_OS_OSX
40 #endif
41 #elif defined(_WIN32) || defined(_WIN64)
42 #define ARCH_OS_WINDOWS
43 #endif
44 
45 //
46 // Processor
47 //
48 
49 #if defined(i386) || defined(__i386__) || defined(__x86_64__) || \
50  defined(_M_IX86) || defined(_M_X64)
51 #define ARCH_CPU_INTEL
52 #elif defined(__arm__) || defined(__aarch64__) || defined(_M_ARM)
53 #define ARCH_CPU_ARM
54 #endif
55 
56 //
57 // Bits
58 //
59 
60 #if defined(__x86_64__) || defined(__aarch64__) || defined(_M_X64)
61 #define ARCH_BITS_64
62 #else
63 #error "Unsupported architecture. x86_64 or ARM64 required."
64 #endif
65 
66 //
67 // Compiler
68 //
69 
70 #if defined(__clang__)
71 #define ARCH_COMPILER_CLANG
72 #define ARCH_COMPILER_CLANG_MAJOR __clang_major__
73 #define ARCH_COMPILER_CLANG_MINOR __clang_minor__
74 #define ARCH_COMPILER_CLANG_PATCHLEVEL __clang_patchlevel__
75 #elif defined(__GNUC__)
76 #define ARCH_COMPILER_GCC
77 #define ARCH_COMPILER_GCC_MAJOR __GNUC__
78 #define ARCH_COMPILER_GCC_MINOR __GNUC_MINOR__
79 #define ARCH_COMPILER_GCC_PATCHLEVEL __GNUC_PATCHLEVEL__
80 #elif defined(__ICC)
81 #define ARCH_COMPILER_ICC
82 #elif defined(_MSC_VER)
83 #define ARCH_COMPILER_MSVC
84 #define ARCH_COMPILER_MSVC_VERSION _MSC_VER
85 #endif
86 
87 //
88 // Features
89 //
90 
91 // Only use the GNU STL extensions on Linux when using gcc.
92 #if defined(ARCH_OS_LINUX) && defined(ARCH_COMPILER_GCC)
93 #define ARCH_HAS_GNU_STL_EXTENSIONS
94 #endif
95 
96 // The current version of Apple clang does not support the thread_local
97 // keyword.
98 #if !(defined(ARCH_OS_DARWIN) && defined(ARCH_COMPILER_CLANG))
99 #define ARCH_HAS_THREAD_LOCAL
100 #endif
101 
102 // The MAP_POPULATE flag for mmap calls only exists on Linux platforms.
103 #if defined(ARCH_OS_LINUX)
104 #define ARCH_HAS_MMAP_MAP_POPULATE
105 #endif
106 
107 #endif // PXR_BASE_ARCH_DEFINES_H