使用不带foo =的makefile参数 [英] Using makefile arguments without foo=

问题描述

我有一个makefile，可用来编译单个文件.当我需要传递参数时，我使用target = targetFile.

I have a makefile I use to compile a single file. When I need to pass an argument, I use target=targetFile.

脚本将使用参数，在与该参数具有相同值的文件(位于同一目录中)中进行查找并进行编译.

The script takes the argument, looks for the file (within the same directory) that has the same value as the argument and compiles it.

我用它来编译来自使用单个C ++文件的uhunt和uva的问题.所以我不需要多个源文件的多个makefile.多个源文件的单个makefile是我制作makefile的原因.

I use this for compiling problems from uhunt and uva, which use a single c++ file. So I dont' need multiple makefiles for multiple source files. Single makefile for multiple source files is the reason I made the makefile.

这是我到目前为止的代码

Here's the code I have so far

OBJS = $(target).o
CC = g++
CFLAGS = -Wall -g -std=c++11
INCLUDE = -I./$(target)

#default command to run
all : Main-$(target) clean run

#compile and build
Main-$(target) : $(OBJS)
    $(CC) $(CFLAGS) $^ -o $@
%.o : %.cpp
    $(CC) -c $(CFLAGS) $<

#remove object and any other garbage files.
clean:
    rm -rf -d $(target).o *~ *% *# .#*

#remove the compiled file
clean-all:
    $(clean) rm Main-$(target)

#run the compiled file
run:
    ./Main-$(target)

我用来编译的命令是， make target=sourceFile

The command I use to compile is, make target=sourceFile

我也不包括文件扩展名，我所有的源文件扩展名都为cpp

Also I don't include the file extension, I have all my source file extensions to be cpp

我最后想要的是: make sourceFile

请注意，为了使用命令clean and clean-all，我使用

Just a side note, for using the command clean and clean-all, I use

make target=sourceFile clean

make target=sourceFile clean-all

我希望可以使用:

make sourceFile clean

make sourceFile clean-all

推荐答案

您可以使用通用的Makefile变量MAKECMDGOALS，该变量包含传递给make的所有目标.

You may use common Makefile variable MAKECMDGOALS that contains all targets passed to make.

请尝试使用此变体

CC = g++
CFLAGS = -Wall -g
MAKECMDGOALS := $(filter-out clean, $(MAKECMDGOALS))

.PHONY: $(MAKECMDGOALS)
$(MAKECMDGOALS):
        $(CC) $(CFLAGS) $@.c -o Main-$@

clean:
        rm -f *.o

在这里

$(MAKECMDGOALS):
        $(CC) $(CFLAGS) $@.c -o Main-$@

将为MAKECMDGOALS中的每个单词生成单独的构建目标.

will generate separate build targets for each word in MAKECMDGOALS.

注意，我们需要这个Makefile来知道'clean'是删除内容的目标，而不是尝试构建Main-clean.这就是为什么我们使用过滤器功能从MAKECMDGOALS中删除clean的原因.

Note, we need this Makefile to know that 'clean' is a target for removing stuff, but not to attempt build Main-clean. This why we remove clean from MAKECMDGOALS using filter-out function.

因此，如果我们运行make a b clean，构建系统将自动生成用于构建Main-a和Main-b的目标，然后使用已编写的clean目标

So if we run make a b clean, the build system will generate automatically targets for building Main-a and Main-b and then use already written clean target

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