Makefile rules (3)

Implicit rules:

C Compilation:. c changes to. o $ (CC)-c $ (CPPFLAGS) $ (CFLAGS)

C ++ Compilation: Change. cc or. c to. o $ (CXX)-c $ (CPPFLAGS) $ (CXXFLAGS)

Pascal Compilation: Change. p to. o $ (PC)-c $ (PFLAGS)

Fortran Compilation: Change. r to-o $ (FC)-c $ (FFLAGS)

 

 

Example:

OBJS = kang. o yul. o

CC = gcc

CFLAGS =-Wall-O-g

Usage: $ (OBJS)

$ (CC) $ ^-o $ @

Kang. o: kang. c kang. h

$ (CC) $ (CFLAGS)-c $ <-o $ @

Yul. o: yul. c yul. h

$ (CC) $ (CFLAGS)-c $ <-o $ @

 

Use implicit rules

OBJS = kang. o yul. o

CC = gcc

CFLAGS =-Wall-O-g

Usage: $ (OBJS)

$ (CC) $ ^-o $ @

Mode rules:

Implicit rules can only be operated using the default make variables, while pattern rules can also introduce User-Defined variables to create the same rules for multiple files, thus simplifying the preparation of Makefile. The format of a pattern rule is similar to that of a common rule. "%" must be used before the relevant files in the rule. Example of using a Pattern Rule:

OBJS = kang. o yul. o

CC = gcc

CFLAGS =-Wall-O-g

Usage: $ (OBJS)

$ (Cc) $ ^-o $ @

%. O: %. c

$ (Cc) $ (CFLAGS)-c $ <-o $ @