Key GNU Makefile Features (cont)
Generated variable names:
- CFLAGS-server = -DSERVER
- CFLAGS-module = -DMODULE
- CFLAGS = $(CFLAGS-$(TARGET))
- Define target-based configuration
Pattern rules:
- $(OBJDIR)/%o: $(SRCDIR)/%.c
- cd $(<D); $(CC) $(CFLAGS-$*) -c -o $@ $(<F)
- Single rule for many similar operations
- Configurable per-directory with $*