c++ / g++ - Error: Unknown pseudo-op: `. loc' - c++

Question

I am trying to configure my computer to learn C++.
I have errors and warnings once I run gcc from the terminal to call hello.cpp.
C:\Users\Mathieu>gcc -g hello.cpp -o hello -lm
I am using a Windows computer / windows 7 (64 bits) / IDE: Sublime text or Visual Studio Code.
What I have done so far by looking for solutions in the web:
I have added into the PATH the address of MinGW and I have added ";" before the previous PATH.
I have also been checking all the PATH by using echo %PATH% into the terminal and checking the environmental variables.
By typing g++ or gcc alone in the terminal, I get "fatal error, no input file", which means gcc and g++ are well detected by the computer.
I have checked g++ and gcc versions, there are equal.
gcc (MinGW.org GCC Build-20200227-1) 9.2.0
gcc (MinGW.org GCC Build-20200227-1) 9.2.0
I have also performed #alisonc recommandation found here by reviewing links.
g++ 4.6.1 compiler error: Error: unknown pseudo-op: `.cfi_personality'
C:\Users\Mathieu>ls 'which g++' -al
ls: which g++: No such file or directory
C:\Users\Mathieu>ls 'which gcc' -al
ls: which gcc: No such file or directory
When I have launched the program from the terminal I get a long list of errors. I am just adding 3 lines to illustrate. I am not sure if that is relevant to add everything, please, see a few ones:
C:\Users\Mathieu\AppData\Local\Temp\ccUFD66I.s:6498: Error: Unknown pseudo-op:
.secrel32
C:\Users\Mathieu\AppData\Local\Temp\ccUFD66I.s:153: Warning: Missing string
C:\Users\Mathieu\AppData\Local\Temp\ccUFD66I.s:153: Error: Rest of line ignored.
First ignored character is `3'.'''
May someone help me ?
Thank you in advance
All the best
Mathieu

Answer 1

Try to run:
g++ -g hello.cpp -o hello -lm