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2. Terminology and Variables

2.a. Terms

toolchain

The collection of programs used to compile/debug/etc... code (like the compiler (gcc), the assembler/linker (binutils), the system C library (glibc), and the debugger (gdb))

cross-compiler

A toolchain that runs on one type of system but compiles code to run on another (CHOST != CTARGET)

canadian cross

The process of building a cross-compiler which will run on a different machine from the one it was compiled on (CBUILD != CHOST && CHOST != CTARGET)

CBUILD: build system

The system type you compile binaries on

CHOST: host system

The system type you execute binaries on

CTARGET: target system

The system type you compile binaries for

sysroot: system root

The root directory a compiler uses to find its standard headers and libraries

hardfloat

The system has a hardware Floating Point Unit (FPU) to handle floating point math

softfloat

The system lacks a hardware FPU so all floating point operations are approximated with fixed point math

PIE

Position Independent Executable (-fPIE -pie)

PIC

Position Independent Code (-fPIC)

CRT

C RunTime

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