Makefile-来回编译 [英] Makefile - compiling back and forth

问题描述

以下是我的项目的目录结构:

Following is the directory structure of my project:

                       expt-main
                       ---------
                       Makefile_main
                    /             \
         subdir-1                    subdir-2
         --------                    --------
         Makefile_1                  Makefile_2
         mod_codeA.f90               mod_code1.f90
         mod_codeB.f90               mod_code2.f90
         mod_codeC.f90               mod_code3.f90

Makefile_main:

Makefile_main:

export

SHELL = /bin/sh

F90     = mpxlf95

SRCDIRS = $(subdir-1) $(subdir-2)

all:
        @for DIR in ${SRCDIRS} ;

          do \
            back=`pwd`; \
            cd $$DIR ;\
            $(MAKE) ; status=$$? ; \
            if [ $$status != 0 ] ; then \
              echo "Exit status fro make was $$status" ; exit $$status ; \
            fi ; \
            cd $$back ; \
         done

-------------------------------------------------------------------------------

Makefile-1:

%.o: %.f90
        $(F90) $(F90FLAGS) -I$(subdir-2) -c $<

mod_codeA.o: mod_codeC.o $(subdir-2)/mod_code2.o

-------------------------------------------------------------------------------

Makefile-2:

PROG = $(exec)

subdir-1_objs = $(subdir-1)/mod_codeA.o mod_codeB.o mod_codeC.o

all: $(PROG)

$(PROG): $(subdir-2_objs) $(subdir-1_objs) -o $@ $(subdir-2_objs) $(subdir-1_objs)

---------------------------------------------------------------------------------

-

我已经编写了Makefile_main，以便它首先编译subdir-1中的代码(模块)，然后编译subdir-2中的代码(模块)，最后编译可执行文件.问题:subdir-1中的模块使用subdir-2中的模块，并且以类似的方式，subdir-2中的模块使用subdir-1中的模块.我的make失败了，因为正在使用的模块在其他目录中.如何编写一个makefile来解决这个问题，即在subdir-1中编译模块时，每当遇到需要从subdir-2获取目标文件时，都应切换到subdir-2编译必要的模块并返回回到subdir-1采取进一步的行动?

I've written the Makefile_main such that it compiles the codes (modules) in subdir-1 first and then the ones in subdir-2 and finally makes the executable. The issue: modules in subdir-1 uses modules from subdir-2 and in similar fashion, modules in subdir-2 uses those in subdir-1. My make is getting failed because the modules being used is in other directory. How to write a makefile which will take care of this issue that is, while compiling modules in subdir-1, whenever it encounters the need for an object file from subdir-2, it should switch to subdir-2 compile the necessary modules and return back to subdir-1 for further action?

推荐答案

如果您说的不同子目录中的模块彼此需要，则这不是递归Make的好用法.

If modules in different subdirectories need each other as you say, then this is not a good use of recursive Make.

放弃Makefile-1和Makefile-2，让Makefile_main完成所有工作. (我无法具体告诉您如何更改Makefile-main，因为我不执行Fortran，所以我不理解Makefile-2，并且我看不到subdir-2中的模块对subdir中的模块有任何依赖性. -1).

Do away with Makefile-1 and Makefile-2, and let Makefile_main do all the work. (I can't tell you specifically how to change Makefile-main, since I don't do Fortran, I don't understand Makefile-2, and I don't see any dependency of modules in subdir-2 upon those in subdir-1).

这篇关于Makefile-来回编译的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！