General Description: What are the origins of the EDK Xilinx C Libraries? What licensing requirements do these libraries have?
All EDK Xilinx C libraries are covered by Xilinx software licensing, "newlib" licenses, or LGPLs (lesser general public licenses, not GPLs). Therefore, users may freely use these libraries without constraints on the ways in which their applications are licensed.
libc and libm - Origin: newlib open source - Licensing: newlib licensing (For more information, please see doc/license/newlib.txt in the EDK installation area.)
libXil, libXilFile, libXilNet, libXilMfs, and libXilKernel - Origin: Xilinx internal development - Licensing: Xilinx software licensing