4

我尝试在我的 Mac OSX 10.8.3 上使用 CMake 编译一个简单的 CUDA“Hello World”。

调用cmake .似乎成功了。这是我的CMakeList.txt：

project(HelloWorld)
cmake_minimum_required(VERSION 2.8)

FIND_PACKAGE(CUDA)

CUDA_INCLUDE_DIRECTORIES(/Developer/NVIDIA/CUDA-5.0/samples/common/inc)
CUDA_ADD_EXECUTABLE(helloWorld helloWorld.cu)

...和输出：

-- The C compiler identification is Clang 4.2.0
-- The CXX compiler identification is Clang 4.2.0
-- Check for working C compiler: /usr/bin/cc
-- Check for working C compiler: /usr/bin/cc -- works
-- Detecting C compiler ABI info
-- Detecting C compiler ABI info - done
-- Check for working CXX compiler: /usr/bin/c++
-- Check for working CXX compiler: /usr/bin/c++ -- works
-- Detecting CXX compiler ABI info
-- Detecting CXX compiler ABI info - done
-- Found CUDA: /Developer/NVIDIA/CUDA-5.0 (found version "5.0")
-- Configuring done
-- Generating done
-- Build files have been written to: /Users/mennny/Documents/UNI/6_Semester/0_PMPP/1_exercises/cuda-hello-world

但之后调用make失败并出现以下错误：

[100%] Building NVCC (Device) object CMakeFiles/helloWorld.dir//./helloWorld_generated_helloWorld.cu.o
clang: error: unsupported option '-dumpspecs'
clang: error: no input files
CMake Error at helloWorld_generated_helloWorld.cu.o.cmake:206 (message): Error generating /Users/mennny/Documents/UNI/6_Semester/0_PMPP/1_exercises/cuda-hello-world/CMakeFiles/helloWorld.dir//./helloWorld_generated_helloWorld.cu.o


make[2]: *** [CMakeFiles/helloWorld.dir/./helloWorld_generated_helloWorld.cu.o] Error 1
make[1]: *** [CMakeFiles/helloWorld.dir/all] Error 2
make: *** [all] Error 2

我用谷歌搜索了显示的错误，但找不到任何足够的答案。任何想法为什么make会失败，尽管cmake成功了。

谢谢你的帮助。

4

2 回答 2

1

XCode 中的默认 C 编译器在 OS X Lion 中更改为 CLang。CLang 与 nvcc 不兼容，因此您需要更改 nvcc 用于非 cuda（主机）代码的编译器。将以下内容添加到您的 CMakeList.txt 将起作用：

if (NOT DEFINED CUDA_HOST_COMPILER AND CMAKE_C_COMPILER_ID STREQUAL "Clang" AND EXISTS /usr/bin/gcc)
  set(CUDA_HOST_COMPILER /usr/bin/gcc CACHE FILEPATH "Host side compiler used by NVCC")
  message(STATUS "Setting CMAKE_HOST_COMPILER to /usr/bin/gcc instead of ${CMAKE_C_COMPILER}.")
endif()

如有必要，调整 gcc 的路径。

于 2013-04-29T23:13:28.027 回答
0

If you don't want to change your CMakeLists.txt, it works if you set the environment variable CXX to "gcc" (assuming you don't have any other GCC in your path before the one in /usr/bin).

CMake will pick it up automatically.

于 2013-07-10T09:53:13.510 回答