Microsoft Library

Microsoft Library (LIB) files were used as compiled units of code in Microsoft programming languages under the MS-DOS / PC-DOS platform in the 1980s and 1990s, and later also in Windows (although the DLL dynamic linked libraries are more common on this platform). They would be compiled from source code (BASIC, C, Pascal, etc.) and linked into executables.

Links

 * Microsoft document Q79259 describing LIB format (27-DEC-1991)
 * Info on Windows LIB format
 * Lib to A converter