how to compile old C file in 64-bit api

I receive this error when compiling C file in Matlab:

Building with 'Xcode with Clang'.

Error using mex

xcodebuild: error: SDK "macosx10.15.4" cannot be located.

xcrun: error: sh -c '/Applications/Xcode.app/Contents/Developer/usr/bin/xcodebuild

-sdk macosx10.15.4 -find clang 2> /dev/null' failed with exit code 16384: (null)

(errno=No such file or directory)

xcrun: error: unable to find utility "clang", not a developer tool or in PATH

[Walter Roberson]

https://www.ics.uci.edu/~pattis/common/handouts/macmingweclipse/allexperimental/macxcodecommandlinetools.html

Answer 1

[Rashed Mohammed]

Hi Nisha,

It seems like you do not have Xcode Command Line Tools installed which is necessary to have clang, macOS SDK and other toolchain related commands to be used. Please follow the official Apple Documentation or the link provided by Walter to install them. Later you can use the below link, if you have issues with 64bit API

https://www.mathworks.com/help/matlab/matlab_external/upgrading-mex-files-to-use-64-bit-api.html

Hope this helps!

[Nisha Mohd Rafiq]

I have installed it, I still receive the same error...

[Rashed Mohammed]

Hi Nisha,

There is a bug report reported regarding this issue https://www.mathworks.com/support/bugreports/details/2208336. Can you try the Workaround mentioned and see if it solves the issue.