libgcc_s.so.1 not found

Hi,
Having some problems. So i installed 7.3.2. I got up to running the
server in the background. I am not sure if what i am doing next is
corrext. I cd into the pgsql/bin folder and run createdb mydb. here's my
error message:

createdb mydb
ld.so.1: ./psql: fatal: libgcc_s.so.1: open failed: No such file or
directory
Killed
createdb: database creation failed

Can some one explain to me why it is doing this and what i can do to fix
it?
thanks