Squashed 'third_party/ceres/' content from commit e51e9b4
Change-Id: I763587619d57e594d3fa158dc3a7fe0b89a1743b
git-subtree-dir: third_party/ceres
git-subtree-split: e51e9b46f6ca88ab8b2266d0e362771db6d98067
diff --git a/include/ceres/internal/port.h b/include/ceres/internal/port.h
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+// Ceres Solver - A fast non-linear least squares minimizer
+// Copyright 2015 Google Inc. All rights reserved.
+// http://ceres-solver.org/
+//
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are met:
+//
+// * Redistributions of source code must retain the above copyright notice,
+// this list of conditions and the following disclaimer.
+// * Redistributions in binary form must reproduce the above copyright notice,
+// this list of conditions and the following disclaimer in the documentation
+// and/or other materials provided with the distribution.
+// * Neither the name of Google Inc. nor the names of its contributors may be
+// used to endorse or promote products derived from this software without
+// specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+// AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+// IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+// ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
+// LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+// CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+// SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+// INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+// CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+// ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+// POSSIBILITY OF SUCH DAMAGE.
+//
+// Author: keir@google.com (Keir Mierle)
+
+#ifndef CERES_PUBLIC_INTERNAL_PORT_H_
+#define CERES_PUBLIC_INTERNAL_PORT_H_
+
+// This file needs to compile as c code.
+#include "ceres/internal/config.h"
+
+#if defined(CERES_USE_OPENMP)
+# if defined(CERES_USE_CXX11_THREADS) || defined(CERES_NO_THREADS)
+# error CERES_USE_OPENMP is mutually exclusive to CERES_USE_CXX11_THREADS and CERES_NO_THREADS
+# endif
+#elif defined(CERES_USE_CXX11_THREADS)
+# if defined(CERES_USE_OPENMP) || defined(CERES_NO_THREADS)
+# error CERES_USE_CXX11_THREADS is mutually exclusive to CERES_USE_OPENMP, CERES_USE_CXX11_THREADS and CERES_NO_THREADS
+# endif
+#elif defined(CERES_NO_THREADS)
+# if defined(CERES_USE_OPENMP) || defined(CERES_USE_CXX11_THREADS)
+# error CERES_NO_THREADS is mutually exclusive to CERES_USE_OPENMP and CERES_USE_CXX11_THREADS
+# endif
+#else
+# error One of CERES_USE_OPENMP, CERES_USE_CXX11_THREADS or CERES_NO_THREADS must be defined.
+#endif
+
+// CERES_NO_SPARSE should be automatically defined by config.h if Ceres was
+// compiled without any sparse back-end. Verify that it has not subsequently
+// been inconsistently redefined.
+#if defined(CERES_NO_SPARSE)
+# if !defined(CERES_NO_SUITESPARSE)
+# error CERES_NO_SPARSE requires CERES_NO_SUITESPARSE.
+# endif
+# if !defined(CERES_NO_CXSPARSE)
+# error CERES_NO_SPARSE requires CERES_NO_CXSPARSE
+# endif
+# if !defined(CERES_NO_ACCELERATE_SPARSE)
+# error CERES_NO_SPARSE requires CERES_NO_ACCELERATE_SPARSE
+# endif
+# if defined(CERES_USE_EIGEN_SPARSE)
+# error CERES_NO_SPARSE requires !CERES_USE_EIGEN_SPARSE
+# endif
+#endif
+
+// A macro to signal which functions and classes are exported when
+// building a DLL with MSVC.
+//
+// Note that the ordering here is important, CERES_BUILDING_SHARED_LIBRARY
+// is only defined locally when Ceres is compiled, it is never exported to
+// users. However, in order that we do not have to configure config.h
+// separately for building vs installing, if we are using MSVC and building
+// a shared library, then both CERES_BUILDING_SHARED_LIBRARY and
+// CERES_USING_SHARED_LIBRARY will be defined when Ceres is compiled.
+// Hence it is important that the check for CERES_BUILDING_SHARED_LIBRARY
+// happens first.
+#if defined(_MSC_VER) && defined(CERES_BUILDING_SHARED_LIBRARY)
+# define CERES_EXPORT __declspec(dllexport)
+#elif defined(_MSC_VER) && defined(CERES_USING_SHARED_LIBRARY)
+# define CERES_EXPORT __declspec(dllimport)
+#else
+# define CERES_EXPORT
+#endif
+
+#endif // CERES_PUBLIC_INTERNAL_PORT_H_