CC ?= gcc
CFLAGS ?= -Wall -O2

# This is not how makefiles should be written.
# Pretend you did not see this

all: main.elf main_sigaction.elf

TARGET = main.elf
SRC = main.c

TARGET2 = main_sigaction.elf
SRC2 = main_sigaction.c

$(TARGET): $(SRC)
	@echo CC $@
	@$(CC) $(CFLAGS) -o $@ $^ $(LDFLAGS)

$(TARGET2): $(SRC2)
	@echo CC $@
	@$(CC) $(CFLAGS) -o $@ $^ $(LDFLAGS)

clean:
	rm -f *.elf