cmake，gcc，cuda和-m32 [英] cmake, gcc, cuda and -m32

问题描述

我想出CUDA不工作在64位模式在我的mac（或者不能得到它运行到目前为止）。因此，我决定编译32位的所有内容。

I figured out that CUDA does not work in 64bit mode on my mac (or couldn't get it running so far). Therefore I decided to compile everything for 32bit.

我使用cmake 2.8并添加了以下选项

I use cmake 2.8 and added the following options

add_definitions(-Wall -m32)
set(CUDA_64_BIT_DEVICE_CODE OFF)
set(CMAKE_MODULE_LINKER_FLAGS -m32)

但是当它尝试链接它时，它会做这样的：

However when it tries to link it it does something like this:

/usr/bin/c++    -mmacosx-version-min=10.6 -Wl,-search_paths_first -headerpad_max_install_names  CMakeFiles/SimpleTestsCUDA.dir/BlockMatrix.cpp.o CMakeFiles/SimpleTestsCUDA.dir/Matrix.cpp.o ./SimpleTestsCUDA_generated_SimpleTests.cu.o ./SimpleTestsCUDA_generated_BlockMatrix.cu.o  -o SimpleTestsCUDA  /usr/local/cuda/lib/libcudart.dylib /usr/local/cuda/lib/libcuda.dylib 

其中失败了很多文件不是必需的架构警告从ld。现在，如果我手动添加-m32到上面的命令它工作。但是我不知道如何教授cmake添加-m32到每个gcc（或ld）调用。到目前为止它为nvcc和gcc，但不是链接..

Which fails with a lot of "file is not of required architecture" warnings from ld. Now if I add manually -m32 to the command above it works. However I have no idea how to teach cmake to add -m32 to every gcc (or ld) invocation. So far it does it for nvcc and gcc, but not for linking..

推荐答案

如果设置env var LDFLAGS 在运行cmake之前，它将工作：

If you set the env var LDFLAGS before you run cmake on the project it will work as well:

export LDFLAGS=-m32
cmake ../source

这篇关于cmake，gcc，cuda和-m32的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！