GNU toolchain

GNU make: an automation tool for compilation and build
GNU Compiler Collection (GCC): a suite of compilers for several programming languages
GNU Binutils: a suite of tools including linker, assembler and other tools
GNU Bison: a parser generator, often used with the Flex lexical analyser
GNU m4: an m4 macro processor
GNU Debugger (GDB): a code debugging tool
GNU build system (autotools): Autoconf, Automake and Libtool 参考：GNU构建系统和Autotool

GNU Binary Utilities (binutils) includes:

`as`	assembler popularly known as GAS (GNU Assembler)
`ld`	linker
`gprof`	profiler
`addr2line`	convert address to file and line
`ar`	create, modify, and extract from archives
`c++filt`	demangling filter for C++ symbols
`dlltool`	creation of Windows dynamic-link libraries
`gold`	alternative linker
`nlmconv`	object file conversion to a NetWare Loadable Module
`nm`	list symbols in object files
`objcopy`	copy object files, possibly making changes
`objdump`	dump information about object files
`ranlib`	generate indices for archives
`readelf`	display content of ELF files
`size`	list total and section sizes
`strings`	list printable strings
`strip`	remove symbols from an object file
`windmc`	generates Windows message resources
`windres`	compiler for Windows resource files