Libmv: Add build configuration header
Allows to easily access build platform information, such as bitness, compiler, supported C++ version and so on.
This commit is contained in:
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@ -23,6 +23,7 @@ libmv/base/scoped_ptr_test.cc
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libmv/base/vector.h
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libmv/base/vector_test.cc
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libmv/base/vector_utils.h
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libmv/build/build_config.h
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libmv/image/array_nd.cc
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libmv/image/array_nd.h
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libmv/image/array_nd_test.cc
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@ -0,0 +1,382 @@
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// Copyright (c) 2020 libmv authors.
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//
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// Permission is hereby granted, free of charge, to any person obtaining a copy
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// of this software and associated documentation files (the "Software"), to
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// deal in the Software without restriction, including without limitation the
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// rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
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// sell copies of the Software, and to permit persons to whom the Software is
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// furnished to do so, subject to the following conditions:
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//
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// The above copyright notice and this permission notice shall be included in
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// all copies or substantial portions of the Software.
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//
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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// FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
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// IN THE SOFTWARE.
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#ifndef LIBMV_BUILD_BUILD_CONFIG_H_
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#define LIBMV_BUILD_BUILD_CONFIG_H_
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#include <climits>
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#include <cstdint>
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// Initially is based on Chromium's build_config.h, with tweaks and extensions
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// needed for this project.
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//
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// NOTE: All commonly used symbols (which are checked on a "top" level, from
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// outside of any platform-specific ifdef block) are to be explicitly defined
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// to 0 when they are not "active". This is extra lines of code in this file,
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// but is not being edited that often. Such approach helps catching cases when
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// one attempted to access build configuration variable without including the
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// header by simply using -Wundef compiler attribute.
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//
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// NOTE: Not having things explicitly defined to 0 is harmless (in terms it
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// follows same rules as Google projects) and will simply cause compiler to
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// become more noisy, which is simple to correct.
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////////////////////////////////////////////////////////////////////////////////
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// A set of macros to use for platform detection.
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#if defined(__native_client__)
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// __native_client__ must be first, so that other OS_ defines are not set.
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# define OS_NACL 1
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// OS_NACL comes in two sandboxing technology flavors, SFI or Non-SFI.
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// PNaCl toolchain defines __native_client_nonsfi__ macro in Non-SFI build
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// mode, while it does not in SFI build mode.
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# if defined(__native_client_nonsfi__)
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# define OS_NACL_NONSFI
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# else
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# define OS_NACL_SFI
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# endif
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#elif defined(_AIX)
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# define OS_AIX 1
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#elif defined(ANDROID)
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# define OS_ANDROID 1
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#elif defined(__APPLE__)
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// Only include TargetConditions after testing ANDROID as some android builds
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// on mac don't have this header available and it's not needed unless the target
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// is really mac/ios.
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# include <TargetConditionals.h>
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# define OS_MACOSX 1
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# if defined(TARGET_OS_IPHONE) && TARGET_OS_IPHONE
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# define OS_IOS 1
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# endif // defined(TARGET_OS_IPHONE) && TARGET_OS_IPHONE
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#elif defined(__HAIKU__)
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# define OS_HAIKU 1
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#elif defined(__hpux)
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# define OS_HPUX 1
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#elif defined(__linux__)
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# define OS_LINUX 1
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// Include a system header to pull in features.h for glibc/uclibc macros.
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# include <unistd.h>
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# if defined(__GLIBC__) && !defined(__UCLIBC__)
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// We really are using glibc, not uClibc pretending to be glibc.
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# define LIBC_GLIBC 1
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# endif
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#elif defined(__sgi)
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# define OS_IRIX 1
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#elif defined(_WIN32)
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# define OS_WIN 1
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#elif defined(__Fuchsia__)
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# define OS_FUCHSIA 1
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#elif defined(__FreeBSD__)
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# define OS_FREEBSD 1
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#elif defined(__NetBSD__)
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# define OS_NETBSD 1
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#elif defined(__OpenBSD__)
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# define OS_OPENBSD 1
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#elif defined(__sun)
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# define OS_SOLARIS 1
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#elif defined(__QNXNTO__)
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# define OS_QNX 1
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#elif defined(__asmjs__) || defined(__wasm__)
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# define OS_ASMJS
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#else
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# error Please add support for your platform in build/build_config.h
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#endif
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#if !defined(OS_AIX)
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# define OS_AIX 0
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#endif
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#if !defined(OS_ASMJS)
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# define OS_ASMJS 0
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#endif
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#if !defined(OS_NACL)
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# define OS_NACL 0
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#endif
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#if !defined(OS_NACL_NONSFI)
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# define OS_NACL_NONSFI 0
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#endif
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#if !defined(OS_NACL_SFI)
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# define OS_NACL_SFI 0
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#endif
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#if !defined(OS_ANDROID)
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# define OS_ANDROID 0
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#endif
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#if !defined(OS_MACOSX)
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# define OS_MACOSX 0
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#endif
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#if !defined(OS_IOS)
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# define OS_IOS 0
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#endif
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#if !defined(OS_HAIKU)
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# define OS_HAIKU 0
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#endif
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#if !defined(OS_HPUX)
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# define OS_HPUX 0
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#endif
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#if !defined(OS_IRIX)
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# define OS_IRIX 0
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#endif
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#if !defined(OS_LINUX)
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# define OS_LINUX 0
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#endif
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#if !defined(LIBC_GLIBC)
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# define LIBC_GLIBC 0
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#endif
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#if !defined(OS_WIN)
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# define OS_WIN 0
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#endif
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#if !defined(OS_FUCHSIA)
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# define OS_FUCHSIA 0
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#endif
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#if !defined(OS_FREEBSD)
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# define OS_FREEBSD 0
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#endif
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#if !defined(OS_NETBSD)
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# define OS_NETBSD 0
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#endif
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#if !defined(OS_OPENBSD)
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# define OS_OPENBSD 0
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#endif
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#if !defined(OS_SOLARIS)
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# define OS_SOLARIS 0
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#endif
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#if !defined(OS_QNX)
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# define OS_QNX 0
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#endif
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////////////////////////////////////////////////////////////////////////////////
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// Apple OS family detection.
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#if defined(OS_MAC) || defined(OS_IOS)
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# define OS_APPLE 1
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#else
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# define OS_APPLE 0
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#endif
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////////////////////////////////////////////////////////////////////////////////
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// *BSD OS family detection.
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//
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// For access to standard BSD features, use OS_BSD instead of a
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// more specific macro.
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#if OS_FREEBSD || OS_OPENBSD || OS_NETBSD
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# define OS_BSD 1
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#else
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# define OS_BSD 0
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#endif
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////////////////////////////////////////////////////////////////////////////////
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// POSIX system detection.
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//
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// For access to standard POSIXish features use OS_POSIX instead of a
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// more specific macro.
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#if OS_AIX || OS_ANDROID || OS_ASMJS || OS_FREEBSD || OS_LINUX || OS_MACOSX || \
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OS_NACL || OS_NETBSD || OS_OPENBSD || OS_QNX || OS_SOLARIS
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# define OS_POSIX 1
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#else
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# define OS_POSIX 0
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#endif
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////////////////////////////////////////////////////////////////////////////////
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// Compiler detection, including its capabilities.
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#if defined(__clang__)
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# define COMPILER_CLANG 1
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#elif defined(__GNUC__)
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# define COMPILER_GCC 1
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# define COMPILER_GCC_VERSION (__GNUC__ * 100 + __GNUC_MINOR__)
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#elif defined(_MSC_VER)
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# define COMPILER_MSVC 1
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# define COMPILER_MSVC_VERSION (_MSC_VER)
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#elif defined(__MINGW32__)
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# define COMPILER_MINGW32 1
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#elif defined(__MINGW64__)
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# define COMPILER_MINGW64 1
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#else
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# error Please add support for your compiler in build/build_config.h
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#endif
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#if !defined(COMPILER_CLANG)
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# define COMPILER_CLANG 0
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#endif
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#if !defined(COMPILER_GCC)
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# define COMPILER_GCC 0
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#endif
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#if !defined(COMPILER_MSVC)
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# define COMPILER_MSVC 0
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#endif
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#if !defined(COMPILER_MINGW32)
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# define COMPILER_MINGW32 0
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#endif
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#if !defined(COMPILER_MINGW64)
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# define COMPILER_MINGW64 0
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#endif
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// Compiler is any of MinGW family.
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#if COMPILER_MINGW32 || COMPILER_MINGW64
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# define COMPILER_MINGW 1
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#else
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# define COMPILER_MINGW 0
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#endif
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// Check what is the latest C++ specification the compiler supports.
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//
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// NOTE: Use explicit definition here to avoid expansion-to-defined warning from
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// being geenrated. While this will most likely a false-positive warning in this
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// particular case, that warning might be helpful to catch errors elsewhere.
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// C++11 check.
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#if ((defined(__cplusplus) && (__cplusplus > 199711L)) || \
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(defined(_MSC_VER) && (_MSC_VER >= 1800)))
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# define COMPILER_SUPPORTS_CXX11 1
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#else
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# define COMPILER_SUPPORTS_CXX11 0
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#endif
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// C++14 check.
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#if (defined(__cplusplus) && (__cplusplus > 201311L))
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# define COMPILER_SUPPORTS_CXX14 1
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#else
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# define COMPILER_SUPPORTS_CXX14 0
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#endif
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// C++17 check.
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#if (defined(__cplusplus) && (__cplusplus > 201611L))
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# define COMPILER_SUPPORTS_CXX17 1
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#else
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# define COMPILER_SUPPORTS_CXX17 0
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#endif
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// C++20 check.
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#if (defined(__cplusplus) && (__cplusplus > 201911L))
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# define COMPILER_SUPPORTS_CXX20 1
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#else
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# define COMPILER_SUPPORTS_CXX20 0
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#endif
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////////////////////////////////////////////////////////////////////////////////
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// Processor architecture detection.
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//
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// For more info on what's defined, see:
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//
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// http://msdn.microsoft.com/en-us/library/b0084kay.aspx
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// http://www.agner.org/optimize/calling_conventions.pdf
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//
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// or with gcc, run: "echo | gcc -E -dM -"
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#if defined(_M_X64) || defined(__x86_64__)
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# define ARCH_CPU_X86_FAMILY 1
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# define ARCH_CPU_X86_64 1
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# define ARCH_CPU_64_BITS 1
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# define ARCH_CPU_LITTLE_ENDIAN 1
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#elif defined(_M_IX86) || defined(__i386__)
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# define ARCH_CPU_X86_FAMILY 1
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# define ARCH_CPU_X86 1
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# define ARCH_CPU_32_BITS 1
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# define ARCH_CPU_LITTLE_ENDIAN 1
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#elif defined(__s390x__)
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# define ARCH_CPU_S390_FAMILY 1
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# define ARCH_CPU_S390X 1
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# define ARCH_CPU_64_BITS 1
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# define ARCH_CPU_BIG_ENDIAN 1
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#elif defined(__s390__)
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# define ARCH_CPU_S390_FAMILY 1
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# define ARCH_CPU_S390 1
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# define ARCH_CPU_31_BITS 1
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# define ARCH_CPU_BIG_ENDIAN 1
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#elif (defined(__PPC64__) || defined(__PPC__)) && /* NOLINT */ \
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defined(__BIG_ENDIAN__) // NOLINT
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# define ARCH_CPU_PPC64_FAMILY 1
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# define ARCH_CPU_PPC64 1
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# define ARCH_CPU_64_BITS 1
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# define ARCH_CPU_BIG_ENDIAN 1
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#elif defined(__PPC64__)
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# define ARCH_CPU_PPC64_FAMILY 1
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# define ARCH_CPU_PPC64 1
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# define ARCH_CPU_64_BITS 1
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# define ARCH_CPU_LITTLE_ENDIAN 1
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#elif defined(__ARMEL__)
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# define ARCH_CPU_ARM_FAMILY 1
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# define ARCH_CPU_ARMEL 1
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# define ARCH_CPU_32_BITS 1
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# define ARCH_CPU_LITTLE_ENDIAN 1
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#elif defined(__aarch64__) || defined(_M_ARM64)
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# define ARCH_CPU_ARM_FAMILY 1
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# define ARCH_CPU_ARM64 1
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# define ARCH_CPU_64_BITS 1
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# define ARCH_CPU_LITTLE_ENDIAN 1
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#elif defined(__pnacl__) || defined(__asmjs__) || defined(__wasm__)
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# define ARCH_CPU_32_BITS 1
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# define ARCH_CPU_LITTLE_ENDIAN 1
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#elif defined(__MIPSEL__)
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# if defined(__LP64__)
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# define ARCH_CPU_MIPS_FAMILY 1
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# define ARCH_CPU_MIPS64EL 1
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# define ARCH_CPU_64_BITS 1
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# define ARCH_CPU_LITTLE_ENDIAN 1
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# else
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# define ARCH_CPU_MIPS_FAMILY 1
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# define ARCH_CPU_MIPSEL 1
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# define ARCH_CPU_32_BITS 1
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# define ARCH_CPU_LITTLE_ENDIAN 1
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# endif
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#elif defined(__MIPSEB__)
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# if defined(__LP64__)
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# define ARCH_CPU_MIPS_FAMILY 1
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# define ARCH_CPU_MIPS64 1
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# define ARCH_CPU_64_BITS 1
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# define ARCH_CPU_BIG_ENDIAN 1
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# else
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# define ARCH_CPU_MIPS_FAMILY 1
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# define ARCH_CPU_MIPS 1
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# define ARCH_CPU_32_BITS 1
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# define ARCH_CPU_BIG_ENDIAN 1
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# endif
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#else
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# error Please add support for your architecture in build/build_config.h
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#endif
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#if !defined(ARCH_CPU_LITTLE_ENDIAN)
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# define ARCH_CPU_LITTLE_ENDIAN 0
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#endif
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#if !defined(ARCH_CPU_BIG_ENDIAN)
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# define ARCH_CPU_BIG_ENDIAN 0
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#endif
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#if !defined(ARCH_CPU_32_BITS)
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# define ARCH_CPU_32_BITS 0
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#endif
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#if !defined(ARCH_CPU_64_BITS)
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# define ARCH_CPU_64_BITS 0
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#endif
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#if !defined(ARCH_CPU_X86_FAMILY)
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# define ARCH_CPU_X86_FAMILY 0
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#endif
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#if !defined(ARCH_CPU_ARM_FAMILY)
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# define ARCH_CPU_ARM_FAMILY 0
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#endif
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#if !defined(ARCH_CPU_MIPS_FAMILY)
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# define ARCH_CPU_MIPS_FAMILY 0
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#endif
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#if !defined(ARCH_CPU_PPC64_FAMILY)
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# define ARCH_CPU_PPC64_FAMILY 0
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#endif
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#if !defined(ARCH_CPU_S390_FAMILY)
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# define ARCH_CPU_S390_FAMILY 0
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#endif
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#endif // LIBMV_BUILD_BUILD_CONFIG_H_
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