# Ceres Solver - A fast non-linear least squares minimizer # Copyright 2014 Google Inc. All rights reserved. # http://code.google.com/p/ceres-solver/ # # 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: sergey.vfx@gmail.com (Sergey Sharybin) # # FindSharedPtr.cmake - Find shared pointer header and namespace. # # This module defines the following variables: # # SHARED_PTR_FOUND: TRUE if shared_ptr found. # SHARED_PTR_TR1_MEMORY_HEADER: True if <tr1/memory> header is to be used # for the shared_ptr object, otherwise use <memory>. # SHARED_PTR_TR1_NAMESPACE: TRUE if shared_ptr is defined in std::tr1 namespace, # otherwise it's assumed to be defined in std namespace. MACRO(FIND_SHARED_PTR) SET(SHARED_PTR_FOUND FALSE) CHECK_INCLUDE_FILE_CXX(memory HAVE_STD_MEMORY_HEADER) IF (HAVE_STD_MEMORY_HEADER) # Finding the memory header doesn't mean that shared_ptr is in std # namespace. # # In particular, MSVC 2008 has shared_ptr declared in std::tr1. In # order to support this, we do an extra check to see which namespace # should be used. INCLUDE(CheckCXXSourceCompiles) CHECK_CXX_SOURCE_COMPILES("#include <memory> int main() { std::shared_ptr<int> int_ptr; return 0; }" HAVE_SHARED_PTR_IN_STD_NAMESPACE) IF (HAVE_SHARED_PTR_IN_STD_NAMESPACE) MESSAGE("-- Found shared_ptr in std namespace using <memory> header.") SET(SHARED_PTR_FOUND TRUE) ELSE (HAVE_SHARED_PTR_IN_STD_NAMESPACE) CHECK_CXX_SOURCE_COMPILES("#include <memory> int main() { std::tr1::shared_ptr<int> int_ptr; return 0; }" HAVE_SHARED_PTR_IN_TR1_NAMESPACE) IF (HAVE_SHARED_PTR_IN_TR1_NAMESPACE) MESSAGE("-- Found shared_ptr in std::tr1 namespace using <memory> header.") SET(SHARED_PTR_TR1_NAMESPACE TRUE) SET(SHARED_PTR_FOUND TRUE) ENDIF (HAVE_SHARED_PTR_IN_TR1_NAMESPACE) ENDIF (HAVE_SHARED_PTR_IN_STD_NAMESPACE) ENDIF (HAVE_STD_MEMORY_HEADER) IF (NOT SHARED_PTR_FOUND) # Further, gcc defines shared_ptr in std::tr1 namespace and # <tr1/memory> is to be included for this. And what makes things # even more tricky is that gcc does have <memory> header, so # all the checks above wouldn't find shared_ptr. CHECK_INCLUDE_FILE_CXX("tr1/memory" HAVE_TR1_MEMORY_HEADER) IF (HAVE_TR1_MEMORY_HEADER) CHECK_CXX_SOURCE_COMPILES("#include <tr1/memory> int main() { std::tr1::shared_ptr<int> int_ptr; return 0; }" HAVE_SHARED_PTR_IN_TR1_NAMESPACE_FROM_TR1_MEMORY_HEADER) IF (HAVE_SHARED_PTR_IN_TR1_NAMESPACE_FROM_TR1_MEMORY_HEADER) MESSAGE("-- Found shared_ptr in std::tr1 namespace using <tr1/memory> header.") SET(SHARED_PTR_TR1_MEMORY_HEADER TRUE) SET(SHARED_PTR_TR1_NAMESPACE TRUE) SET(SHARED_PTR_FOUND TRUE) ENDIF (HAVE_SHARED_PTR_IN_TR1_NAMESPACE_FROM_TR1_MEMORY_HEADER) ENDIF (HAVE_TR1_MEMORY_HEADER) ENDIF (NOT SHARED_PTR_FOUND) ENDMACRO(FIND_SHARED_PTR)