How Can I MEX a dynamic library (libraw) with my own C++ code on an M2 Mac?

5 次查看（过去 30 天）

Darral Freund 2023-6-30

0
链接

此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/1990268-how-can-i-mex-a-dynamic-library-libraw-with-my-own-c-code-on-an-m2-mac

评论： Rik 2023-7-1

I have existing C++ code compiled with Clang++ that uses libraw on my M2 Mac. But the dynamic libraries are arm64 and won’t work when I try to use the dynamic library with MEX. I get the following error message:

Error using mex

ld: warning: ignoring file /usr/local/lib/libraw.dylib, building for macOS-x86_64 but attempting to link with file built for

macOS-arm64

Undefined symbols for architecture x86_64:

"LibRaw::LibRaw(unsigned int)", referenced from:

MexFunction::operator()(matlab::mex::MexIORange<std::__1::__wrap_iter<matlab::data::Array*>>,

matlab::mex::MexIORange<std::__1::__wrap_iter<matlab::data::Array*>>) in rawtest4.o

and more…

I wasn’t able to figure out how to create the x86_64 libraries on my M2, so I used an Intel Mac and created the dynamic libraries on it. I then copied them to the M2 and tried again, but got this message:

ld: warning: ignoring file /Users/darral/MATLAB-Drive/libraw_darral/lib/libraw.dylib, building for macOS-x86_64 but attempting

to link with file built for unknown-unsupported file format ( 0x62 0x6F 0x6F 0x6B 0x00 0x00 0x00 0x00 0x6D 0x61 0x72 0x6B 0x00

0x00 0x00 0x00 )

Undefined symbols for architecture x86_64:

"LibRaw::LibRaw(unsigned int)", referenced from:

MexFunction::operator()(matlab::mex::MexIORange<std::__1::__wrap_iter<matlab::data::Array*>>,

matlab::mex::MexIORange<std::__1::__wrap_iter<matlab::data::Array*>>) in rawtest4.o

and more….

Can anyone advise me if there is a way to do this and how I might go about it?

Thanks

0 个评论
显示 -2更早的评论隐藏 -2更早的评论

请先登录，再进行评论。

请先登录，再回答此问题。

采纳的回答

Rik 2023-6-30

0
链接

此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/1990268-how-can-i-mex-a-dynamic-library-libraw-with-my-own-c-code-on-an-m2-mac#answer_1265638

移动：Rik 2023-7-1

If you're eligible for the prerelease you could give R2023b-prerelease a try, since that is native ARM.

8 个评论
显示 6更早的评论隐藏 6更早的评论

Darral Freund 2023-6-30

移动：Rik 2023-7-1

Thanks again. I installed the JRE and the 2023b pre release and the mex function successfully compiled my code and linked the dynamic libraries. This is a great solution!