Why do I receive error LNK1104: cannot open file libboost_z​lib-vc142-​mt-x64-1_8​4.lib

I receive "error LNK1104: cannot open file libboost_zlib-vc142-mt-x64-1_84.lib" when I run following code

mex -v "D:\csvfile\hubs\fastTableReadV3.cpp" -ID:\boost_1_84_0 -LD:\boost_1_84_0\stage\lib

I find the file "libboost_zlib-vc142-mt-x64-1_84.lib" in "D:\boost_1_84_0\stage\lib". I can't figure out why it still have this error.

[Manikanta Aditya]

https://stackoverflow.com/questions/133698/why-does-fatal-error-lnk1104-cannot-open-file-c-program-obj-occur-when-i-c

[骏昌 王]

@Manikanta Aditya When I use the form

mex -v "D:\csvfile\hubs\fastTableReadV3.cpp" -I'D:\boost_1_84_0\'

it does not make any different and same error was raised.

mex -v "D:\csvfile\hubs\fastTableReadV3.cpp" -I"D:\boost_1_84_0\"

MATLAB don't recognize this form as valid parameter.

[Yuchen]

Hello,

Please check the document about "mex" in MATLAB:

https://www.mathworks.com/help/matlab/ref/mex.html

Answer 1

[Suman]

Hi 骏昌 王,

As per the documentation, https://www.mathworks.com/help/matlab/ref/mex.html#btw17rw-1-option1optionN, If used, the -L option must precede the -l option. Hence, you also need to pass the libname using the -l option. Note that you do not have to add the library extension, i.e., .lib or .so etc.

>> -Llibfolder -llibname

Links with dynamic object library libname in (optional) libfolder.

MATLAB expands libname to:

• libname.lib or liblibname.lib — Windows systems
• liblibname.dylib — macOS systems
• liblibname.so — Linux systems

If used, the -L option must precede the -l option. When using the -L option on Linux or macOS systems, you also must set the runtime library path, as explained in Set Run-Time Library Path.

Specify the -l option with the lowercase letter L. Do not add a space between l and libname or between L and libfolder.

To link a static library, use the filenames input argument.

Hope this helps!