我試圖用這個Makefile編譯我的Java代碼。當我運行make時,它多次編譯代碼。Makefile運行不止一次
的Makefile:
.PHONY: all clean run
SOURCES = \
Models/CustomException \
Models/Forest \
Models/ForestContainer \
Models/Owner \
Models/OwnerContainer \
Models/Tree
SRC = $(addprefix src/, $(addsuffix .java, $(SOURCES)))
BIN = $(addprefix bin/, $(addsuffix .class, $(SOURCES)))
all: ${BIN}
clean:
-rm -f ${BIN};
${BIN}: ${SRC}
mkdir -p bin/Controllers;
mkdir -p bin/Models;
mkdir -p bin/Views;
javac -d bin ${SRC};
run: all
java -cp bin Program;
輸出:
┌─(klim) - (~/workspace/Forest-mvc)
└─> make
mkdir -p bin/Controllers;
mkdir -p bin/Models;
mkdir -p bin/Views;
javac -d bin src/Models/CustomException.java src/Models/Forest.java src/Models/ForestContainer.java src/Models/Owner.java src/Models/OwnerContainer.java src/Models/Tree.java;
mkdir -p bin/Controllers;
mkdir -p bin/Models;
mkdir -p bin/Views;
javac -d bin src/Models/CustomException.java src/Models/Forest.java src/Models/ForestContainer.java src/Models/Owner.java src/Models/OwnerContainer.java src/Models/Tree.java;
mkdir -p bin/Controllers;
mkdir -p bin/Models;
mkdir -p bin/Views;
javac -d bin src/Models/CustomException.java src/Models/Forest.java src/Models/ForestContainer.java src/Models/Owner.java src/Models/OwnerContainer.java src/Models/Tree.java;
mkdir -p bin/Controllers;
mkdir -p bin/Models;
mkdir -p bin/Views;
javac -d bin src/Models/CustomException.java src/Models/Forest.java src/Models/ForestContainer.java src/Models/Owner.java src/Models/OwnerContainer.java src/Models/Tree.java;
mkdir -p bin/Controllers;
mkdir -p bin/Models;
mkdir -p bin/Views;
javac -d bin src/Models/CustomException.java src/Models/Forest.java src/Models/ForestContainer.java src/Models/Owner.java src/Models/OwnerContainer.java src/Models/Tree.java;
mkdir -p bin/Controllers;
mkdir -p bin/Models;
mkdir -p bin/Views;
javac -d bin src/Models/CustomException.java src/Models/Forest.java src/Models/ForestContainer.java src/Models/Owner.java src/Models/OwnerContainer.java src/Models/Tree.java;
正如你可以看到它運行不止一次的命令,實際上6倍。運行命令的次數隨着SOURCES數量的增加/減少而增加/減少
這怎麼可能?