Make

A solid reference for writing and debugging Makefiles in C/C++ projects. Covers the essentials: pattern rules, automatic variables like $@ and $<, and automatic dependency generation with -MMD so header changes actually trigger rebuilds. The examples are practical, starting from a minimal correct Makefile and building up to multi-directory projects without recursive make. Includes a debugging table for common errors like "missing separator" and "nothing to be done." Useful if you're converting shell scripts to proper build systems or fixing incremental builds that keep recompiling everything. The flat Makefile approach for medium projects is good advice that people often learn the hard way.