TOOLCHAIN Posts on XDA

Unaltered, Prebuilt GCC and Linaro Toolchains to build your Custom ROM/Kernel

Basically, a toolchain is a bunch of development tools used in a chain (the output of one tool feeds into the input for the next tool, hence a toolchain), usually in order to compile source code (such as ROMs or kernels). Developers often use modified toolchains that can include optimizations for specific architectures focusing on performance...