| # 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: 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) |
| # To support CXX11 option, clear the results of all check_xxx() functions |
| # s/t we always perform the checks each time, otherwise CMake fails to |
| # detect that the tests should be performed again after CXX11 is toggled. |
| unset(HAVE_STD_MEMORY_HEADER CACHE) |
| unset(HAVE_SHARED_PTR_IN_STD_NAMESPACE CACHE) |
| unset(HAVE_SHARED_PTR_IN_TR1_NAMESPACE CACHE) |
| unset(HAVE_TR1_MEMORY_HEADER CACHE) |
| unset(HAVE_SHARED_PTR_IN_TR1_NAMESPACE_FROM_TR1_MEMORY_HEADER CACHE) |
| |
| 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) |