在iOS上安装ceres-solver

Question

运行cmake -DCMAKE_TOOLCHAIN_FILE=ceres-solver/cmake/iOS.cmake -DCMAKE_CXX_FLAGS="-stdlib=libc++" -DEIGEN_INCLUDE_DIR=/usr/local/Cellar/eigen -DIOS_PLATFORM=OS ceres-solver

给了我这些错误

-- Using minimal glog substitute (include): internal/ceres/miniglog
-- Max log level for minimal glog substitute: 2
-- Building without OpenMP, disabling.
-- Neither OpenMP or TBB is enabled, disabling multithreading.
-- Looking for C++ include unordered_map
CMake Error: Generator: execution of make failed. Make command was: "CMAKE_MAKE_PROGRAM" "cmTC_3feba/fast"
-- Looking for C++ include unordered_map - not found
-- Looking for C++ include tr1/unordered_map
CMake Error: Generator: execution of make failed. Make command was: "CMAKE_MAKE_PROGRAM" "cmTC_36cb7/fast"
-- Looking for C++ include tr1/unordered_map - not found
-- Unable to find <unordered_map> or <tr1/unordered_map>.
-- Replacing unordered_map/set with map/set (warning: slower!), try enabling CXX11 option if you expect C++11 to be available.
-- Looking for C++ include memory
CMake Error: Generator: execution of make failed. Make command was: "CMAKE_MAKE_PROGRAM" "cmTC_013b8/fast"
-- Looking for C++ include memory - not found
-- Looking for C++ include tr1/memory
CMake Error: Generator: execution of make failed. Make command was: "CMAKE_MAKE_PROGRAM" "cmTC_bb377/fast"
-- Looking for C++ include tr1/memory - not found
CMake Error at CMakeLists.txt:494 (message):
  Unable to find shared_ptr, try enabling CXX11 option if you expect C++11 to
  be available.

即使我将CXX11设置为ON，我也会得到相同的错误。我该怎么办？

假设我让它正常工作，我是否只需要运行make install来获取libceres.a文件？

非常感谢你的帮助。

Answer 1

这不是C++11错误，请注意错误

CMake错误:生成器:执行make失败。Make命令是："CMAKE_MAKE_PROGRAM“"cmTC_3feba/fast”

CMake正在尝试通过编译几个短程序片段来确定各种c++11功能的存在，但由于一些Make相关的问题(您是否安装了make？Xcore命令行工具？)最后得出结论，c++11是不可用的。

这里要解决的问题是看看你的系统上Make发生了什么。