The Small Device C Compiler (SDCC) is a free compiler targeting various 8-bit systems, including common microcontroller (µC) architectures.
The SDCC-STD-UX project funded by the Bundesministerium für Bildung und Forschung aims to improve standard compliance in SDCC, in particular support for current and future C standards.
SDCC targets common 8-bit µC architectures, such as the MCS-51, STM8, S08, Rabbit and Padauk, as well as some architectures now mostly relevant to retrocomputing or -gaming, such as Z80 and SM83. As a C compiler, SDCC aims to support current and future C standards, but is not up to the level of GCC or clang. For debug information, there is some basic support for ELF/DWARF. This summer, the Bundesministerium für Bildung und Forschung via the Prototypefund funds the SDCC-STD-UX effort to improve standards compliance and usability in SDCC. This ngoing effort has already resulted in substantial improvements in support for C standards that will be in the future SDCC 4.3.0 release.