Simple Makefile example for reference

Makefile

# Find all files matching "src/*.go" and replace "src/%.go" with "bin/%"
OUTPUTS := $(patsubst src/%.go,bin/%,$(wildcard src/*.go))

# Reference all files to be built in a single rule
all: $(OUTPUTS)

# Rule for compiling a single output file in bin/
bin/%: src/%.go
	# $* is replaced with the value of the wildcard in the rule (%)
	go build -o bin/$* src/$*.go

# Treat "all" rule as phony, meaning make will not look for a file named "all" when running it
.PHONY: all