Libmv: Add build configuration header

Allows to easily access build platform information, such as bitness,
compiler, supported C++ version and so on.

2 files changed, 383 insertions, 0 deletions

diff --git a/intern/libmv/files.txt b/intern/libmv/files.txt
index 0ccd4f78f2a..985074bfe50 100644
--- a/intern/libmv/files.txt
+++ b/intern/libmv/files.txt
@@ -23,6 +23,7 @@ libmv/base/scoped_ptr_test.cc
 libmv/base/vector.h
 libmv/base/vector_test.cc
 libmv/base/vector_utils.h
+libmv/build/build_config.h
 libmv/image/array_nd.cc
 libmv/image/array_nd.h
 libmv/image/array_nd_test.cc
diff --git a/intern/libmv/libmv/build/build_config.h b/intern/libmv/libmv/build/build_config.h
new file mode 100644
index 00000000000..7029a36a7dd
--- /dev/null
+++ b/intern/libmv/libmv/build/build_config.h
@@ -0,0 +1,382 @@
+// Copyright (c) 2020 libmv authors.
+//
+// Permission is hereby granted, free of charge, to any person obtaining a copy
+// of this software and associated documentation files (the "Software"), to
+// deal in the Software without restriction, including without limitation the
+// rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
+// sell copies of the Software, and to permit persons to whom the Software is
+// furnished to do so, subject to the following conditions:
+//
+// The above copyright notice and this permission notice shall be included in
+// all copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+// FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
+// IN THE SOFTWARE.
+
+#ifndef LIBMV_BUILD_BUILD_CONFIG_H_
+#define LIBMV_BUILD_BUILD_CONFIG_H_
+
+#include <climits>
+#include <cstdint>
+
+// Initially is based on Chromium's build_config.h, with tweaks and extensions
+// needed for this project.
+//
+// NOTE: All commonly used symbols (which are checked on a "top" level, from
+// outside of any platform-specific ifdef block) are to be explicitly defined
+// to 0 when they are not "active". This is extra lines of code in this file,
+// but is not being edited that often. Such approach helps catching cases when
+// one attempted to access build configuration variable without including the
+// header by simply using -Wundef compiler attribute.
+//
+// NOTE: Not having things explicitly defined to 0 is harmless (in terms it
+// follows same rules as Google projects) and will simply cause compiler to
+// become more noisy, which is simple to correct.
+
+////////////////////////////////////////////////////////////////////////////////
+// A set of macros to use for platform detection.
+
+#if defined(__native_client__)
+// __native_client__ must be first, so that other OS_ defines are not set.
+#  define OS_NACL 1
+// OS_NACL comes in two sandboxing technology flavors, SFI or Non-SFI.
+// PNaCl toolchain defines __native_client_nonsfi__ macro in Non-SFI build
+// mode, while it does not in SFI build mode.
+#  if defined(__native_client_nonsfi__)
+#    define OS_NACL_NONSFI
+#  else
+#    define OS_NACL_SFI
+#  endif
+#elif defined(_AIX)
+#  define OS_AIX 1
+#elif defined(ANDROID)
+#  define OS_ANDROID 1
+#elif defined(__APPLE__)
+// Only include TargetConditions after testing ANDROID as some android builds
+// on mac don't have this header available and it's not needed unless the target
+// is really mac/ios.
+#  include <TargetConditionals.h>
+#  define OS_MACOSX 1
+#  if defined(TARGET_OS_IPHONE) && TARGET_OS_IPHONE
+#    define OS_IOS 1
+#  endif  // defined(TARGET_OS_IPHONE) && TARGET_OS_IPHONE
+#elif defined(__HAIKU__)
+#  define OS_HAIKU 1
+#elif defined(__hpux)
+#  define OS_HPUX 1
+#elif defined(__linux__)
+#  define OS_LINUX 1
+// Include a system header to pull in features.h for glibc/uclibc macros.
+#  include <unistd.h>
+#  if defined(__GLIBC__) && !defined(__UCLIBC__)
+// We really are using glibc, not uClibc pretending to be glibc.
+#    define LIBC_GLIBC 1
+#  endif
+#elif defined(__sgi)
+#  define OS_IRIX 1
+#elif defined(_WIN32)
+#  define OS_WIN 1
+#elif defined(__Fuchsia__)
+#  define OS_FUCHSIA 1
+#elif defined(__FreeBSD__)
+#  define OS_FREEBSD 1
+#elif defined(__NetBSD__)
+#  define OS_NETBSD 1
+#elif defined(__OpenBSD__)
+#  define OS_OPENBSD 1
+#elif defined(__sun)
+#  define OS_SOLARIS 1
+#elif defined(__QNXNTO__)
+#  define OS_QNX 1
+#elif defined(__asmjs__) || defined(__wasm__)
+#  define OS_ASMJS
+#else
+#  error Please add support for your platform in build/build_config.h
+#endif
+
+#if !defined(OS_AIX)
+#  define OS_AIX 0
+#endif
+#if !defined(OS_ASMJS)
+#  define OS_ASMJS 0
+#endif
+#if !defined(OS_NACL)
+#  define OS_NACL 0
+#endif
+#if !defined(OS_NACL_NONSFI)
+#  define OS_NACL_NONSFI 0
+#endif
+#if !defined(OS_NACL_SFI)
+#  define OS_NACL_SFI 0
+#endif
+#if !defined(OS_ANDROID)
+#  define OS_ANDROID 0
+#endif
+#if !defined(OS_MACOSX)
+#  define OS_MACOSX 0
+#endif
+#if !defined(OS_IOS)
+#  define OS_IOS 0
+#endif
+#if !defined(OS_HAIKU)
+#  define OS_HAIKU 0
+#endif
+#if !defined(OS_HPUX)
+#  define OS_HPUX 0
+#endif
+#if !defined(OS_IRIX)
+#  define OS_IRIX 0
+#endif
+#if !defined(OS_LINUX)
+#  define OS_LINUX 0
+#endif
+#if !defined(LIBC_GLIBC)
+#  define LIBC_GLIBC 0
+#endif
+#if !defined(OS_WIN)
+#  define OS_WIN 0
+#endif
+#if !defined(OS_FUCHSIA)
+#  define OS_FUCHSIA 0
+#endif
+#if !defined(OS_FREEBSD)
+#  define OS_FREEBSD 0
+#endif
+#if !defined(OS_NETBSD)
+#  define OS_NETBSD 0
+#endif
+#if !defined(OS_OPENBSD)
+#  define OS_OPENBSD 0
+#endif
+#if !defined(OS_SOLARIS)
+#  define OS_SOLARIS 0
+#endif
+#if !defined(OS_QNX)
+#  define OS_QNX 0
+#endif
+
+////////////////////////////////////////////////////////////////////////////////
+// Apple OS family detection.
+
+#if defined(OS_MAC) || defined(OS_IOS)
+#  define OS_APPLE 1
+#else
+#  define OS_APPLE 0
+#endif
+
+////////////////////////////////////////////////////////////////////////////////
+// *BSD OS family detection.
+//
+// For access to standard BSD features, use OS_BSD instead of a
+// more specific macro.
+
+#if OS_FREEBSD || OS_OPENBSD || OS_NETBSD
+#  define OS_BSD 1
+#else
+#  define OS_BSD 0
+#endif
+
+////////////////////////////////////////////////////////////////////////////////
+// POSIX system detection.
+//
+// For access to standard POSIXish features use OS_POSIX instead of a
+// more specific macro.
+
+#if OS_AIX || OS_ANDROID || OS_ASMJS || OS_FREEBSD || OS_LINUX || OS_MACOSX || \
+    OS_NACL || OS_NETBSD || OS_OPENBSD || OS_QNX || OS_SOLARIS
+#  define OS_POSIX 1
+#else
+#  define OS_POSIX 0
+#endif
+
+////////////////////////////////////////////////////////////////////////////////
+// Compiler detection, including its capabilities.
+
+#if defined(__clang__)
+#  define COMPILER_CLANG 1
+#elif defined(__GNUC__)
+#  define COMPILER_GCC 1
+#  define COMPILER_GCC_VERSION (__GNUC__ * 100 + __GNUC_MINOR__)
+#elif defined(_MSC_VER)
+#  define COMPILER_MSVC 1
+#  define COMPILER_MSVC_VERSION (_MSC_VER)
+#elif defined(__MINGW32__)
+#  define COMPILER_MINGW32 1
+#elif defined(__MINGW64__)
+#  define COMPILER_MINGW64 1
+#else
+#  error Please add support for your compiler in build/build_config.h
+#endif
+
+#if !defined(COMPILER_CLANG)
+#  define COMPILER_CLANG 0
+#endif
+#if !defined(COMPILER_GCC)
+#  define COMPILER_GCC 0
+#endif
+#if !defined(COMPILER_MSVC)
+#  define COMPILER_MSVC 0
+#endif
+#if !defined(COMPILER_MINGW32)
+#  define COMPILER_MINGW32 0
+#endif
+#if !defined(COMPILER_MINGW64)
+#  define COMPILER_MINGW64 0
+#endif
+
+// Compiler is any of MinGW family.
+#if COMPILER_MINGW32 || COMPILER_MINGW64
+#  define COMPILER_MINGW 1
+#else
+#  define COMPILER_MINGW 0
+#endif
+
+// Check what is the latest C++ specification the compiler supports.
+//
+// NOTE: Use explicit definition here to avoid expansion-to-defined warning from
+// being geenrated. While this will most likely a false-positive warning in this
+// particular case, that warning might be helpful to catch errors elsewhere.
+
+// C++11 check.
+#if ((defined(__cplusplus) && (__cplusplus > 199711L)) ||                      \
+     (defined(_MSC_VER) && (_MSC_VER >= 1800)))
+#  define COMPILER_SUPPORTS_CXX11 1
+#else
+#  define COMPILER_SUPPORTS_CXX11 0
+#endif
+// C++14 check.
+#if (defined(__cplusplus) && (__cplusplus > 201311L))
+#  define COMPILER_SUPPORTS_CXX14 1
+#else
+#  define COMPILER_SUPPORTS_CXX14 0
+#endif
+// C++17 check.
+#if (defined(__cplusplus) && (__cplusplus > 201611L))
+#  define COMPILER_SUPPORTS_CXX17 1
+#else
+#  define COMPILER_SUPPORTS_CXX17 0
+#endif
+// C++20 check.
+#if (defined(__cplusplus) && (__cplusplus > 201911L))
+#  define COMPILER_SUPPORTS_CXX20 1
+#else
+#  define COMPILER_SUPPORTS_CXX20 0
+#endif
+
+////////////////////////////////////////////////////////////////////////////////
+// Processor architecture detection.
+//
+// For more info on what's defined, see:
+//
+//   http://msdn.microsoft.com/en-us/library/b0084kay.aspx
+//   http://www.agner.org/optimize/calling_conventions.pdf
+//
+//   or with gcc, run: "echo | gcc -E -dM -"
+#if defined(_M_X64) || defined(__x86_64__)
+#  define ARCH_CPU_X86_FAMILY 1
+#  define ARCH_CPU_X86_64 1
+#  define ARCH_CPU_64_BITS 1
+#  define ARCH_CPU_LITTLE_ENDIAN 1
+#elif defined(_M_IX86) || defined(__i386__)
+#  define ARCH_CPU_X86_FAMILY 1
+#  define ARCH_CPU_X86 1
+#  define ARCH_CPU_32_BITS 1
+#  define ARCH_CPU_LITTLE_ENDIAN 1
+#elif defined(__s390x__)
+#  define ARCH_CPU_S390_FAMILY 1
+#  define ARCH_CPU_S390X 1
+#  define ARCH_CPU_64_BITS 1
+#  define ARCH_CPU_BIG_ENDIAN 1
+#elif defined(__s390__)
+#  define ARCH_CPU_S390_FAMILY 1
+#  define ARCH_CPU_S390 1
+#  define ARCH_CPU_31_BITS 1
+#  define ARCH_CPU_BIG_ENDIAN 1
+#elif (defined(__PPC64__) || defined(__PPC__)) && /* NOLINT */                 \
+    defined(__BIG_ENDIAN__)                       // NOLINT
+#  define ARCH_CPU_PPC64_FAMILY 1
+#  define ARCH_CPU_PPC64 1
+#  define ARCH_CPU_64_BITS 1
+#  define ARCH_CPU_BIG_ENDIAN 1
+#elif defined(__PPC64__)
+#  define ARCH_CPU_PPC64_FAMILY 1
+#  define ARCH_CPU_PPC64 1
+#  define ARCH_CPU_64_BITS 1
+#  define ARCH_CPU_LITTLE_ENDIAN 1
+#elif defined(__ARMEL__)
+#  define ARCH_CPU_ARM_FAMILY 1
+#  define ARCH_CPU_ARMEL 1
+#  define ARCH_CPU_32_BITS 1
+#  define ARCH_CPU_LITTLE_ENDIAN 1
+#elif defined(__aarch64__) || defined(_M_ARM64)
+#  define ARCH_CPU_ARM_FAMILY 1
+#  define ARCH_CPU_ARM64 1
+#  define ARCH_CPU_64_BITS 1
+#  define ARCH_CPU_LITTLE_ENDIAN 1
+#elif defined(__pnacl__) || defined(__asmjs__) || defined(__wasm__)
+#  define ARCH_CPU_32_BITS 1
+#  define ARCH_CPU_LITTLE_ENDIAN 1
+#elif defined(__MIPSEL__)
+#  if defined(__LP64__)
+#    define ARCH_CPU_MIPS_FAMILY 1
+#    define ARCH_CPU_MIPS64EL 1
+#    define ARCH_CPU_64_BITS 1
+#    define ARCH_CPU_LITTLE_ENDIAN 1
+#  else
+#    define ARCH_CPU_MIPS_FAMILY 1
+#    define ARCH_CPU_MIPSEL 1
+#    define ARCH_CPU_32_BITS 1
+#    define ARCH_CPU_LITTLE_ENDIAN 1
+#  endif
+#elif defined(__MIPSEB__)
+#  if defined(__LP64__)
+#    define ARCH_CPU_MIPS_FAMILY 1
+#    define ARCH_CPU_MIPS64 1
+#    define ARCH_CPU_64_BITS 1
+#    define ARCH_CPU_BIG_ENDIAN 1
+#  else
+#    define ARCH_CPU_MIPS_FAMILY 1
+#    define ARCH_CPU_MIPS 1
+#    define ARCH_CPU_32_BITS 1
+#    define ARCH_CPU_BIG_ENDIAN 1
+#  endif
+#else
+#  error Please add support for your architecture in build/build_config.h
+#endif
+
+#if !defined(ARCH_CPU_LITTLE_ENDIAN)
+#  define ARCH_CPU_LITTLE_ENDIAN 0
+#endif
+#if !defined(ARCH_CPU_BIG_ENDIAN)
+#  define ARCH_CPU_BIG_ENDIAN 0
+#endif
+
+#if !defined(ARCH_CPU_32_BITS)
+#  define ARCH_CPU_32_BITS 0
+#endif
+#if !defined(ARCH_CPU_64_BITS)
+#  define ARCH_CPU_64_BITS 0
+#endif
+
+#if !defined(ARCH_CPU_X86_FAMILY)
+#  define ARCH_CPU_X86_FAMILY 0
+#endif
+#if !defined(ARCH_CPU_ARM_FAMILY)
+#  define ARCH_CPU_ARM_FAMILY 0
+#endif
+#if !defined(ARCH_CPU_MIPS_FAMILY)
+#  define ARCH_CPU_MIPS_FAMILY 0
+#endif
+#if !defined(ARCH_CPU_PPC64_FAMILY)
+#  define ARCH_CPU_PPC64_FAMILY 0
+#endif
+#if !defined(ARCH_CPU_S390_FAMILY)
+#  define ARCH_CPU_S390_FAMILY 0
+#endif
+
+#endif  // LIBMV_BUILD_BUILD_CONFIG_H_