std::isnan没有被声明，有g++-5

Question

我试图编译我的程序与nvcc和g++-5，我得到了这个错误。

In file included from /usr/include/glm/detail/func_common.hpp:426:0,
             from /usr/include/glm/detail/func_geometric.inl:5,
             from /usr/include/glm/detail/func_geometric.hpp:113,
             from /usr/include/glm/geometric.hpp:6,
             from /usr/include/glm/detail/func_matrix.inl:4,
             from /usr/include/glm/detail/func_matrix.hpp:149,
             from /usr/include/glm/detail/type_mat2x2.inl:4,
             from /usr/include/glm/detail/type_mat2x2.hpp:182,
             from /usr/include/glm/mat2x2.hpp:6,
             from /usr/include/glm/glm.hpp:71,
             from src/controls.cpp:6:
/usr/include/glm/detail/func_common.inl:623:14: error: ‘std::isnan’   has not been declared
   using std::isnan;
          ^
/usr/include/glm/detail/func_common.inl:659:14: error: ‘std::isinf’ has not been declared
   using std::isinf;

使用g++可以正确编译，但nvcc需要g++-5.有人知道怎么解决这个问题吗？顺便说一句，当我在Ubuntu上运行sudo do-release-upgrade时，这种情况就开始发生了。

nvcc --version输出如下：

nvcc: NVIDIA (R) Cuda compiler driver
Copyright (c) 2005-2016 NVIDIA Corporation
Built on Tue_Jan_10_13:22:03_CST_2017
Cuda compilation tools, release 8.0, V8.0.61

g++-5 --version输出如下：

g++-5 (Ubuntu 5.5.0-1ubuntu1) 5.4.1 20171010
Copyright (C) 2015 Free Software Foundation, Inc.
This is free software; see the source for copying conditions.  There is NO
warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.

g++ --version输出如下：

g++ (Ubuntu 7.2.0-8ubuntu3) 7.2.0
Copyright (C) 2017 Free Software Foundation, Inc.
This is free software; see the source for copying conditions.  There is NO
warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.

我正在用c++11进行编译，我的源文件中没有包含c计量。这是我的CMakeLists.txt。

cmake_minimum_required(VERSION 3.7 FATAL_ERROR)
set(CMAKE_C_COMPILER /usr/bin/gcc-5 CACHE PATH "" FORCE)
set(CMAKE_CXX_COMPILER /usr/bin/gcc-5 CACHE PATH "" FORCE)
project(cpu_pcd C CXX CUDA)

add_compile_options(-std=c++11)

file(GLOB SRC src/*.cpp src/*.hpp)

set(EXECUTABLE_OUTPUT_PATH ${PROJECT_BINARY_DIR}/bin)

find_package(OpenGL REQUIRED)
find_package(glfw3 REQUIRED)
find_package(GLEW REQUIRED)
find_package(CUDA REQUIRED)

include_directories(src/)
include_directories(${OPENGL_INCLUDE_DIRS})
include_directories(${GLFW_INCLUDE_DIRS})
include_directories(${CUDA_INCLUDE_DIRS})

cuda_add_library(kernel src/update_particles.cu)
cuda_add_executable(cpu_pcd ${SRC})

set_target_properties(cpu_pcd
  PROPERTIES CUDA_SEPARABLE_COMPILATION on)

target_link_libraries(cpu_pcd kernel)
target_link_libraries(cpu_pcd ${OPENGL_LIBRARIES} glfw  ${GLEW_LIBRARIES} ${CUDA_LIBRARIES} pthread)

Answer 1

对于那些感兴趣的人，我解决了它，修改了两行CMakeLists.txt，如下所示：

set(CMAKE_C_COMPILER /usr/bin/gcc-5 CACHE PATH "" FORCE)
set(CMAKE_CXX_COMPILER /usr/bin/g++ CACHE PATH "" FORCE)

现在，由于大家都愿意帮忙，它的编译是正确的。

Answer 2

您需要让nvcc以C++11模式运行主机C++编译器(直接将此选项传递给gcc是不够的)：

 nvcc -Xcompiler "-std=c++11"

详细信息可以找到这里

有关资料：

CODA5.0支持的c++版本

使用CUDA和C++11时出错

Answer 3

std::isnan和std::isinf在<cmath>中声明，以C++11开头。包含标头吗？编译是以C++11或更高模式完成的吗？