Shared version of the support library, a library of internal subroutines that GCC uses to overcome shortcomings of particular machines, or special needs for some languages.

This is the GNU D compiler, which compiles D on platforms supported by gcc. It uses the gcc backend to generate optimised code.

This is the GNU Objective-C compiler, which compiles Objective-C on platforms supported by the gcc compiler. It uses the gcc backend to generate optimized code.

MinGW-w64 provides a development and runtime environment for 32- and 64-bit (x86 and x64) Windows applications using the Windows API and the GNU Compiler Collection (gcc).

This package contains (header) files for GNU GCC plugin development. It is only used for the development of GCC plugins, but not needed to run plugins.