1 # Ceres Solver - A fast non-linear least squares minimizer 2 # Copyright 2014 Google Inc. All rights reserved. 3 # http://code.google.com/p/ceres-solver/ 4 # 5 # Redistribution and use in source and binary forms, with or without 6 # modification, are permitted provided that the following conditions are met: 7 # 8 # * Redistributions of source code must retain the above copyright notice, 9 # this list of conditions and the following disclaimer. 10 # * Redistributions in binary form must reproduce the above copyright notice, 11 # this list of conditions and the following disclaimer in the documentation 12 # and/or other materials provided with the distribution. 13 # * Neither the name of Google Inc. nor the names of its contributors may be 14 # used to endorse or promote products derived from this software without 15 # specific prior written permission. 16 # 17 # THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" 18 # AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 19 # IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 20 # ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE 21 # LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 22 # CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 23 # SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 24 # INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 25 # CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 26 # ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 27 # POSSIBILITY OF SUCH DAMAGE. 28 # 29 # Author: sergey.vfx (a] gmail.com (Sergey Sharybin) 30 # 31 32 # FindSharedPtr.cmake - Find shared pointer header and namespace. 33 # 34 # This module defines the following variables: 35 # 36 # SHARED_PTR_FOUND: TRUE if shared_ptr found. 37 # SHARED_PTR_TR1_MEMORY_HEADER: True if <tr1/memory> header is to be used 38 # for the shared_ptr object, otherwise use <memory>. 39 # SHARED_PTR_TR1_NAMESPACE: TRUE if shared_ptr is defined in std::tr1 namespace, 40 # otherwise it's assumed to be defined in std namespace. 41 42 MACRO(FIND_SHARED_PTR) 43 SET(SHARED_PTR_FOUND FALSE) 44 CHECK_INCLUDE_FILE_CXX(memory HAVE_STD_MEMORY_HEADER) 45 IF (HAVE_STD_MEMORY_HEADER) 46 # Finding the memory header doesn't mean that shared_ptr is in std 47 # namespace. 48 # 49 # In particular, MSVC 2008 has shared_ptr declared in std::tr1. In 50 # order to support this, we do an extra check to see which namespace 51 # should be used. 52 INCLUDE(CheckCXXSourceCompiles) 53 CHECK_CXX_SOURCE_COMPILES("#include <memory> 54 int main() { 55 std::shared_ptr<int> int_ptr; 56 return 0; 57 }" 58 HAVE_SHARED_PTR_IN_STD_NAMESPACE) 59 60 IF (HAVE_SHARED_PTR_IN_STD_NAMESPACE) 61 MESSAGE("-- Found shared_ptr in std namespace using <memory> header.") 62 SET(SHARED_PTR_FOUND TRUE) 63 ELSE (HAVE_SHARED_PTR_IN_STD_NAMESPACE) 64 CHECK_CXX_SOURCE_COMPILES("#include <memory> 65 int main() { 66 std::tr1::shared_ptr<int> int_ptr; 67 return 0; 68 }" 69 HAVE_SHARED_PTR_IN_TR1_NAMESPACE) 70 IF (HAVE_SHARED_PTR_IN_TR1_NAMESPACE) 71 MESSAGE("-- Found shared_ptr in std::tr1 namespace using <memory> header.") 72 SET(SHARED_PTR_TR1_NAMESPACE TRUE) 73 SET(SHARED_PTR_FOUND TRUE) 74 ENDIF (HAVE_SHARED_PTR_IN_TR1_NAMESPACE) 75 ENDIF (HAVE_SHARED_PTR_IN_STD_NAMESPACE) 76 ENDIF (HAVE_STD_MEMORY_HEADER) 77 78 IF (NOT SHARED_PTR_FOUND) 79 # Further, gcc defines shared_ptr in std::tr1 namespace and 80 # <tr1/memory> is to be included for this. And what makes things 81 # even more tricky is that gcc does have <memory> header, so 82 # all the checks above wouldn't find shared_ptr. 83 CHECK_INCLUDE_FILE_CXX("tr1/memory" HAVE_TR1_MEMORY_HEADER) 84 IF (HAVE_TR1_MEMORY_HEADER) 85 CHECK_CXX_SOURCE_COMPILES("#include <tr1/memory> 86 int main() { 87 std::tr1::shared_ptr<int> int_ptr; 88 return 0; 89 }" 90 HAVE_SHARED_PTR_IN_TR1_NAMESPACE_FROM_TR1_MEMORY_HEADER) 91 IF (HAVE_SHARED_PTR_IN_TR1_NAMESPACE_FROM_TR1_MEMORY_HEADER) 92 MESSAGE("-- Found shared_ptr in std::tr1 namespace using <tr1/memory> header.") 93 SET(SHARED_PTR_TR1_MEMORY_HEADER TRUE) 94 SET(SHARED_PTR_TR1_NAMESPACE TRUE) 95 SET(SHARED_PTR_FOUND TRUE) 96 ENDIF (HAVE_SHARED_PTR_IN_TR1_NAMESPACE_FROM_TR1_MEMORY_HEADER) 97 ENDIF (HAVE_TR1_MEMORY_HEADER) 98 ENDIF (NOT SHARED_PTR_FOUND) 99 ENDMACRO(FIND_SHARED_PTR) 100
