pyqt5 download without apt and gcc

I am working on goembed sbcx-b3 board.i don't have my apt-get and gcc. I want to download the pyqt5 library. First of all, I had to install sip to download pyqt5. I had to install gcc in sip. I downloaded the file "https://ftp.gnu.org/gnu/gcc/gcc-4.9.3/".

cd gcc-4.9.3./contrib/download_prerequisitescd ..mkdir objdircd objdir../gcc-4.9.3/configure --prefix = $ HOME / gcc-4.9.3 --enable-languages = c, c, fortran, go --disable-multilib

when i write i get an error like "no acceptable c compiler found in $ path". what should I do.