自动排序Obejct文件“*。o”在Fortran Makefile中

问题描述

这里有两个Fortran90文件和一个makefile文件：

Here I have two Fortran90 files and a makefile:

文件内容 main_mod.f90 ：

module main_mod

contains

  subroutine add(a, b)
    implicit none
    integer, intent(in) :: a, b
    print *, (a+b)
  end subroutine add

end module main_mod

文件内容 main_mod2.f90 / p>

contents of file main_mod2.f90

module main_mod2
  use main_mod

contains

  subroutine add2(a, b)
    implicit none
    integer, intent(in) :: a, b

    call add(a, b)
  end subroutine add2

end module main_mod2

在 makefile 中，我自动从当前目录生成.o文件列表：

and in makefile, I automatically generate a list of ".o" files from current directory:

F90 = /usr/bin/gfortran
COMPFLAGS    =  -c
%.o: %.f90
        $(F90) $(COMPFLAGS) $*.f90

all: $(patsubst %.f90,%.o,$(wildcard *.f90))

当我做项目时，我的make文件中的通配符生成一个目录文件列表，如：

when I make the project, the wildcard statement in my make file generates a list of object files like:

main_mod2.o main_mod.o

然后编译失败，因为首先，文件 main_mod.f90 需要编译，这将给我们在main_mod2.f90 中使用的 main_mod.o 和 main_mod.mod 。那么main_mod2.f90 将被编译成功。这意味着对象文件的排列必须是：

and then the compilation fails because first, the file main_mod.f90 needs be compiled which would give us main_mod.o and main_mod.mod used in main_mod2.f90. Then main_mod2.f90 would be compiled successfully. That means the permutation of object files must be:

main_mod.o main_mod2.o

现在，一般情况下，当我使用通配符创建对象文件列表时，如何执行对象文件的正确排列？ / p>

Now, the question is, in general case when I create the list of object files using wildcard, how can I enforce correct permutation of object files?

推荐答案

虽然gcc确实有 -M 和相关标志与C / C ++文件，他们不幸的是不能与gfortran一起工​​作。其实这是可能的，但只有当你已经知道这些依赖性的时候。
因此，您将需要一个外部程序来生成依赖关系。

While gcc does have -M and related flags for doing exactly this with C/C++ files, they unfortunately do not work with gfortran. Actually, it is possible, but only if you already know the dependencies.Therefore you will need an external program to generate your dependencies.

在我的项目中，我使用，并将以下内容添加到我的makefile中：

In my projects, I use this python script, and add the following to my makefile:

# Script to generate the dependencies
MAKEDEPEND=/path/to/fort_depend.py

# $(DEP_FILE) is a .dep file generated by fort_depend.py
DEP_FILE = my_project.dep

# Source files to compile
OBJECTS = mod_file1.f90 \
          mod_file2.f90

# Make sure everything depends on the .dep file
all: $(actual_executable) $(DEP_FILE)

# Make dependencies
.PHONY: depend
depend: $(DEP_FILE)

# The .dep file depends on the source files, so it automatically gets updated
# when you change your source
$(DEP_FILE): $(OBJECTS)
    @echo "Making dependencies!"
    cd $(SRCPATH) && $(MAKEDEPEND) -w -o /path/to/$(DEP_FILE) -f $(OBJECTS)

include $(DEP_FILE)

fort_depend.py 基本上只是列出所有的模块 USE d给定文件。

fort_depend.py basically just makes a list of all the modules USEd in a given file.

这篇关于自动排序Obejct文件“*。o”在Fortran Makefile中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！