Can't compile c file using mex

Good afternoob guys. I've done tons os research here and kinda lost the past 2 days trying to solve my issue before creating probably a repeted topic but didn't have success. I'm trying to compile a C script that I've done but I'm having the following message:

Error using mex C:/ProgramData/MATLAB/SupportPackages/R2017b/3P.instrset/mingw_w64.instrset/bin/../lib/gcc/x86_64-w64-mingw32/5.3.0/../../../../x86_64-w64-mingw32/bin/ld.exe: skipping incompatible C:\lib\gsl.lib when searching for -lgsl C:/ProgramData/MATLAB/SupportPackages/R2017b/3P.instrset/mingw_w64.instrset/bin/../lib/gcc/x86_64-w64-mingw32/5.3.0/../../../../x86_64-w64-mingw32/bin/ld.exe: skipping incompatible C:/ProgramData/MATLAB/SupportPackages/R2017b/3P.instrset/mingw_w64.instrset/bin/../lib/gcc/x86_64-w64-mingw32/5.3.0/../../../../x86_64-w64-mingw32/lib/../lib\gsl.lib when searching for -lgsl C:/ProgramData/MATLAB/SupportPackages/R2017b/3P.instrset/mingw_w64.instrset/bin/../lib/gcc/x86_64-w64-mingw32/5.3.0/../../../../x86_64-w64-mingw32/bin/ld.exe: skipping incompatible C:/ProgramData/MATLAB/SupportPackages/R2017b/3P.instrset/mingw_w64.instrset/bin/../lib/gcc/x86_64-w64-mingw32/5.3.0/../../../../x86_64-w64-mingw32/lib\gsl.lib when searching for -lgsl C:/ProgramData/MATLAB/SupportPackages/R2017b/3P.instrset/mingw_w64.instrset/bin/../lib/gcc/x86_64-w64-mingw32/5.3.0/../../../../x86_64-w64-mingw32/bin/ld.exe: cannot find -lgsl collect2.exe: error: ld returned 1 exit status

The line I'm trying to run is:

mex file.c -I'C:\Program Files (x86)\Dev-Cpp\MinGW64\include\' -L'C:\lib\' -lgsl

where my gsl files with .h extensions are in "C:\Program Files (x86)\Dev-Cpp\MinGW64\include\" and the gsl.lib is in "C:\lib\"

I've tried TONS of different things. I had plenty of issues untill this point. I've reinstalled gsl, tried to compile via gcc and many other things. So if this is a repeated topic I really do apologize in advance! But I used a lot of things found here to fix previous erros as I mentioned.

Any help would be really awesome. Thank you very much!