This is an old revision of the document!

GCC and Linux Architectures

GCC is also used to cross compile Linux applications. Applications can be compiled for 32-bit or 64-bit Linux systems.

Architecture	Compilers
32-bit	arm-linux-gnueabihf-gcc arm-linux-gnueabihf-g++
64-bit	aarch64-linux-gnu-gcc aarch64-linux-gnu-g++

Check the current target architecture by logging into the Pi: To check if system is running a 32 (Raspberry) or 64 (X86) architecture, use one of the following commands:

# getconf LONG_BIT
------------------
32

# file /lib/systemd/systemd
-------------------------
/lib/systemd/systemd: ELF 32-bit LSB pie executable, ARM, EABI5 version 1 (SYSV), dynamically linked, interpreter /lib/ld-linux-armhf.so.3, BuildID[sha1]=1dc619f043235803cc3339a671c7f0821b733d93, for GNU/Linux 3.2.0, stripped

dpkg --print-architecture

armhf