Hi,
Just a comment to the name of added library.
GCC/linker expects the default library <name> : lib<name>
if there is a different prefix than "lib" please add ":" as a leading character.

| real library file name | GCC Libraries dialog - Enter Value dialog |
|---|
libmy_math.a | my_math.a |
my_math.a | :my_math.a |
Regards,
Stan