我刚刚开始使用makefiles,并且为我的项目编写了一个,其中包含两个目标。如果我运行一个新的make everything一切正常。但是,如果在此之后我不清理,并且我编辑并保存了一个源文件,然后再次运行make,我的项目只编译我编辑的源文件,然后不尝试将我的源文件链接到新文件中可执行文件。为什么我的项目没有清洁就不能链接?
换句话说:我第一次运行make我得到了$(CC) -c <sourcefile>
每个来源,然后$(CC) -o <sourceobject1> <sourceobject2>...
和一切正常。但是,如果我然后去编辑一个源文件,并尝试再次,我只是得到$(CC) -c <editedsourcefile>
,并且在那之后没有链接!至少make并没有试图再次编译我的所有源文件,但为什么它没有链接我一个新的可执行文件?这是预期的行为?
奖金问题:有没有更好的方法将我的目标文件移动到子目录中,而不是在目标规则的顶部粘贴mv *.o
?我看过this answer,但是我不明白发生了什么,也不知道如何用两个目标来适应我的情况。
这里是我的makefile:
CC = clang++
OPTFLAGS = -O3 -flto -m64
CFLAGS = -Wall -c $(OPTFLAGS)
LFLAGS = -Wall $(OPTFLAGS)
MAKE = make
RM = \rm -f
TARGET-DIR = build
OBJ-DIR = $(TARGET-DIR)/obj
OBJS = $(addprefix $(OBJ-DIR)/, MCTS.o NodePool.o Node.o FastMath.o \
Board.o Patterns.o FastSet.o FastHash.o FastHash2.o FastHashMap.o)
GTP-OBJS = $(addprefix $(OBJ-DIR)/, GtpPlayer.o)
GTP-TARGET = $(TARGET-DIR)/go-gtp
TEST-OBJS = $(addprefix $(OBJ-DIR)/, TestsMain.o MCTSTests.o NodePoolTests.o \
NodeTests.o FastMathTests.o BoardTests.o FastSetTests.o \
FastHashTests.o FastHash2Tests.o FastHashMapTests.o)
TEST-TARGET = $(TARGET-DIR)/go-test
.PHONY : all
all : $(GTP-TARGET) $(TEST-TARGET)
$(GTP-TARGET) : $(GTP-OBJS) $(OBJS)
mv *.o $(OBJ-DIR)
$(CC) $(LFLAGS) $(GTP-OBJS) $(OBJS) -o $(GTP-TARGET)
$(OBJ-DIR)/GtpPlayer.o : GtpPlayer.hpp GtpPlayer.cpp mcts/MCTS.hpp
$(CC) $(CFLAGS) GtpPlayer.cpp
$(OBJ-DIR)/MCTS.o : mcts/MCTS.hpp mcts/MCTS.cpp mcts/NodePool.hpp
$(CC) $(CFLAGS) mcts/MCTS.cpp
$(OBJ-DIR)/NodePool.o : mcts/NodePool.hpp mcts/NodePool.cpp mcts/Node.hpp
$(CC) $(CFLAGS) mcts/NodePool.cpp
$(OBJ-DIR)/Node.o : mcts/Node.hpp mcts/Node.cpp mcts/FastMath.hpp board/Board.hpp
$(CC) $(CFLAGS) mcts/Node.cpp
$(OBJ-DIR)/FastMath.o : mcts/FastMath.hpp mcts/FastMath.cpp
$(CC) $(CFLAGS) mcts/FastMath.cpp
$(OBJ-DIR)/Board.o : board/Board.hpp board/Board.cpp board/Patterns.hpp struct/FastSet.hpp struct/FastHash.hpp
$(CC) $(CFLAGS) board/Board.cpp
$(OBJ-DIR)/Patterns.o : board/Patterns.hpp board/Patterns.cpp struct/FastHash2.hpp struct/FastHashMap.hpp
$(CC) $(CFLAGS) board/Patterns.cpp
$(OBJ-DIR)/FastSet.o : struct/FastSet.hpp struct/FastSet.cpp
$(CC) $(CFLAGS) struct/FastSet.cpp
$(OBJ-DIR)/FastHash.o : struct/FastHash.hpp struct/FastHash.cpp
$(CC) $(CFLAGS) struct/FastHash.cpp
$(OBJ-DIR)/FastHash2.o : struct/FastHash2.hpp struct/FastHash2.cpp
$(CC) $(CFLAGS) struct/FastHash2.cpp
$(OBJ-DIR)/FastHashMap.o : struct/FastHashMap.hpp struct/FastHashMap.cpp
$(CC) $(CFLAGS) struct/FastHashMap.cpp
$(TEST-TARGET) : $(TEST-OBJS) $(OBJS)
mv *.o $(OBJ-DIR)
$(CC) $(LFLAGS) $(TEST-OBJS) $(OBJS) -o $(TEST-TARGET)
$(OBJ-DIR)/TestsMain.o : test/TestsMain.cpp test/MCTSTests.hpp test/NodePoolTests.hpp \
test/NodeTests.hpp test/FastMathTests.hpp test/BoardTests.hpp \
test/FastSetTests.hpp test/FastHashTests.hpp test/FastHash2Tests.hpp test/FastHashMapTests.hpp
$(CC) $(CFLAGS) test/TestsMain.cpp
$(OBJ-DIR)/MCTSTests.o : test/MCTSTests.hpp test/MCTSTests.cpp mcts/MCTS.hpp
$(CC) $(CFLAGS) test/MCTSTests.cpp
$(OBJ-DIR)/NodePoolTests.o : test/NodePoolTests.hpp test/NodePoolTests.cpp
$(CC) $(CFLAGS) test/NodePoolTests.cpp
$(OBJ-DIR)/NodeTests.o : test/NodeTests.hpp test/NodeTests.cpp
$(CC) $(CFLAGS) test/NodeTests.cpp
$(OBJ-DIR)/FastMathTests.o : test/FastMathTests.hpp test/FastMathTests.cpp
$(CC) $(CFLAGS) test/FastMathTests.cpp
$(OBJ-DIR)/BoardTests.o : test/BoardTests.hpp test/BoardTests.cpp
$(CC) $(CFLAGS) test/BoardTests.cpp
$(OBJ-DIR)/FastSetTests.o : test/FastSetTests.hpp test/FastSetTests.cpp
$(CC) $(CFLAGS) test/FastSetTests.cpp
$(OBJ-DIR)/FastHashTests.o : test/FastHashTests.hpp test/FastHashTests.cpp
$(CC) $(CFLAGS) test/FastHashTests.cpp
$(OBJ-DIR)/FastHash2Tests.o : test/FastHash2Tests.hpp test/FastHash2Tests.cpp
$(CC) $(CFLAGS) test/FastHash2Tests.cpp
$(OBJ-DIR)/FastHashMapTests.o : test/FastHashMapTests.hpp test/FastHashMapTests.cpp
$(CC) $(CFLAGS) test/FastHashMapTests.cpp
.PHONY : clean
clean :
$(RM) $(OBJ-DIR)/*.o
.PHONY : distclean
distclean :
$(MAKE) clean
$(RM) $(GTP-TARGET) $(TEST-TARGET)
.PHONY : again
again:
$(MAKE) distclean
$(MAKE) $(GTP-TARGET)
$(MAKE) $(TEST-TARGET)
.PHONY : tar
tar:
tar cfv $(GTP-TARGET).tar $(GTP-OBJS) $(OBJS)
tar cfv $(TEST-TARGET).tar $(TEST-OBJS) $(OBJS)
输出示例:
$ make
clang++ -Wall -c -O3 -flto -m64 GtpPlayer.cpp
clang++ -Wall -c -O3 -flto -m64 mcts/MCTS.cpp
clang++ -Wall -c -O3 -flto -m64 mcts/NodePool.cpp
clang++ -Wall -c -O3 -flto -m64 mcts/Node.cpp
clang++ -Wall -c -O3 -flto -m64 mcts/FastMath.cpp
clang++ -Wall -c -O3 -flto -m64 board/Board.cpp
clang++ -Wall -c -O3 -flto -m64 board/Patterns.cpp
clang++ -Wall -c -O3 -flto -m64 struct/FastSet.cpp
clang++ -Wall -c -O3 -flto -m64 struct/FastHash.cpp
clang++ -Wall -c -O3 -flto -m64 struct/FastHash2.cpp
clang++ -Wall -c -O3 -flto -m64 struct/FastHashMap.cpp
mv *.o build/obj
clang++ -Wall -O3 -flto -m64 build/obj/GtpPlayer.o build/obj/MCTS.o build/obj/NodePool.o build/obj/Node.o build/obj/FastMath.o build/obj/Board.o build/obj/Patterns.o build/obj/FastSet.o build/obj/FastHash.o build/obj/FastHash2.o build/obj/FastHashMap.o -o build/go-gtp
clang++ -Wall -c -O3 -flto -m64 test/TestsMain.cpp
clang++ -Wall -c -O3 -flto -m64 test/MCTSTests.cpp
clang++ -Wall -c -O3 -flto -m64 test/NodePoolTests.cpp
clang++ -Wall -c -O3 -flto -m64 test/NodeTests.cpp
clang++ -Wall -c -O3 -flto -m64 test/FastMathTests.cpp
clang++ -Wall -c -O3 -flto -m64 test/BoardTests.cpp
clang++ -Wall -c -O3 -flto -m64 test/FastSetTests.cpp
clang++ -Wall -c -O3 -flto -m64 test/FastHashTests.cpp
clang++ -Wall -c -O3 -flto -m64 test/FastHash2Tests.cpp
clang++ -Wall -c -O3 -flto -m64 test/FastHashMapTests.cpp
mv *.o build/obj
clang++ -Wall -O3 -flto -m64 build/obj/TestsMain.o build/obj/MCTSTests.o build/obj/NodePoolTests.o build/obj/NodeTests.o build/obj/FastMathTests.o build/obj/BoardTests.o build/obj/FastSetTests.o build/obj/FastHashTests.o build/obj/FastHash2Tests.o build/obj/FastHashMapTests.o build/obj/MCTS.o build/obj/NodePool.o build/obj/Node.o build/obj/FastMath.o build/obj/Board.o build/obj/Patterns.o build/obj/FastSet.o build/obj/FastHash.o build/obj/FastHash2.o build/obj/FastHashMap.o -o build/go-test
现在如果我编辑和保存Board.cpp例如运行make一遍,我得到这个:
$ make
clang++ -Wall -c -O3 -flto -m64 board/Board.cpp
链接命令发生了什么?我想要一个新的目标!
为什么你四处移动'* .o'文件?如果你在没有移动的情况下尝试你的makefile文件呢? (显然你必须改变几件事情才能使它工作。)这绝对是一种非标准的做事方式。 “我希望我的'.o'文件到别的地方”的问题通常包括告诉编译器直接在那个地方生成它们,而不是在makefile中移动它们(这一定会混淆make)。 –
不相关,但您可以将大部分规则简化为'$(OBJ_DIR)/%。0:test /%。hpp test /%。cpp'。 – Maxpm
如果向编译器命令添加“-o $ @”,它们会自动将对象发送到对象目录中(因为您的目标期望它:'$(OBJ-DIR)/ FastHash2.o')。这会让你删除我认为给你带来额外麻烦的'mv'命令。我不完全确定如何解决链接器问题,但我认为移动整个Makefile以仅列出依赖关系将有助于更容易地发现。 – sarnold