Question

我正在尝试学习makefile，下面是我的模块化项目结构：

$ pwd
/cygdrive/d/Make/Code
$ ls -R | grep ":$" | sed -e 's/:$//' -e 's/[^-][^\/]*\//--/g' -e 's/^/   /' -e 's/-/|/'
   .
   |-Build
   |-Conversion
   |---bin
   |-----exe
   |-----obj
   |---include
   |---lib
   |---make
   |---source
   |-Main
   |---bin
   |-----exe
   |-----obj
   |---include
   |---lib
   |---make
   |---source
   |-Reverse
   |---bin
   |-----exe
   |-----obj
   |---include
   |---lib
   |---make
   |---source

三个模块1）转换2）反向3）主要。每个这些模块的makefile都放在相应的make文件夹中，他们正确准备相应的.o文件，并将它们放在各个文件夹的bin/obj中。

构建目录用于生成.exe文件，如下所示：

$ cat makefile
all:
        cd ../Conversion/make; make
        cd ../Reverse/make; make
        cd ../Main/make; make

Conversion:
        cd ../Conversion/make; make

Reverse:
        cd ../Reverse/make; make

Main:
        cd ../Main/make; make


exeApp:
        cd ../Main/make; make App

cConversion:
        cd ../Conversion/make; make clean

cReverse:
        cd ../Reverse/make; make clean

cMain:
        cd ../Main/make ; make clean

cleanAll:
        cd ../Conversion/make; make clean
        cd ../Reverse/make; make clean
        cd ../Main/make; make clean

和main的makefile是：

#VPATH= ./../source
INCLUDES= ./../include
OBJDIR= ./../bin/obj
EXEDIR= ./../bin/exe
OBJLOOKDIR= ./../../Conversion/bin/obj:./../../Reverse/bin/obj:./../../Main/bin/obj
#CONBIN= ./../../Conversion/bin/obj
#REVBIN= ./../../Reverse/bin/obj
#MAINBIN= ./../../Main/bin/obj

vpath %.h $(INCLUDES)
vpath %.o $(OBJLOOKDIR)
vpath %.c ./../source

CC= gcc
CFLAGS= -Wall -c -I$(INCLUDES)

OBJECTS= driver.o
PROJECTOBJECTS= binary.o hex.o octal.o reverseNum.o driver.o

main: $(OBJECTS)

driver.o:  driver.c conversion.h
        $(CC) $(CFLAGS) $< -o $(OBJDIR)/$@

App:  $(PROJECTOBJECTS)
        $(CC) -Wall $< -o $(EXEDIR)/$@

clean:
        rm -rf $(OBJDIR)/*.o *~ $(EXEDIR)/*

但是当我运行make exeApp时，我得到以下错误：

$ make exeApp
cd ../Main/make; make App
make[1]: Entering directory '/cygdrive/d/Make/Code/Main/make'
gcc -Wall ./../../Conversion/bin/obj/binary.o -o ./../bin/exe/App
/usr/lib/gcc/i686-pc-cygwin/4.8.2/../../../libcygwin.a(libcmain.o): In function `main':
/usr/src/debug/cygwin-1.7.28-2/winsup/cygwin/lib/libcmain.c:39: undefined reference to `WinMain@16'
collect2: error: ld returned 1 exit status
makefile:26: recipe for target 'App' failed
make[1]: *** [App] Error 1
make[1]: Leaving directory '/cygdrive/d/Make/Code/Main/make'
makefile:17: recipe for target 'exeApp' failed
make: *** [exeApp] Error 2

有些如何不被转换为以下规则：

$ pwd
/cygdrive/d/Make/Code/Main/make
Gaurav@Gaurav-PC /cygdrive/d/Make/Code/Main/make

$ gcc -Wall ./../../Conversion/bin/obj/binary.o ./../../Conversion/bin/obj/hex.o ./../../Conversion/bin/obj/octal.o ./../../Reverse/bin/obj/reverseNum.o ./../../Main/bin/obj/driver.o -o Trial

Gaurav@Gaurav-PC /cygdrive/d/Make/Code/Main/make
$ ls
makefile  makefileold  Trial.exe

as上述规则编译文件，但exeApp规则仅转换为gcc -Wall ./../../Conversion/bin/obj/binary.o -o ./../bin/exe/App。应该是gcc -Wall ./../../Conversion/bin/obj/binary.o ./../../Conversion/bin/obj/hex.o ./../../Conversion/bin/obj/octal.o ./../../Reverse/bin/obj/reverseNum.o ./../../Main/bin/obj/driver.o -o ./../bin/exe/App

我无法找出原因？

任何人都可以帮忙，请。

由于

为模块化项目编写makefile：Make

0 个答案: