MSVS2012 C ++ nmake如何在子目录中的makefile上运行nmake？

Question

I have a project with a top-level makefile and three sub-folders each with a makefile in them.

In normal makefiles (gnu make) I can do this:

# Just for me so I can read my own makefile -->  TARGET: DEPEND
_TARGET = $@
_DEPEND = $<

# Sub projects to build in dependency order
SUB_PROJECTS = folder2 folder1 folder3

.PHONY: $(SUB_PROJECTS)

all: $(SUB_PROJECTS)
@echo makeing all

$(SUB_PROJECTS):
@echo "*******************************"
@echo "*   MAKING: $(_TARGET)"
@echo "*******************************"
$(MAKE) -C $(_TARGET)
@echo

Where here I am basically calling make -C folder1 to run make on the makefile in sub folder "folder1".

So I am trying to translate my gnu makefile into nmake. For the most part I have not had too much trouble (the .phony thing is different to here).

But I can't seem to find the syntax to call nmake on the sub folder:

nmake folder1 does not work. I looked at all the flags for nmake an non of them looked obvious. The documentation on nmake is not easy to navigate (ie to find what you want).

Answer 1

I don't believe nmake has anything like (gnu)make's -C option, you'll need to do something like

$(SUB_PROJECTS):
    cd $@
    $(MAKE) /$(MAKEFLAGS)
    cd $(MAKEDIR)

Answer 2

I just found this link: UsingNmake which suggests:

Traversing Directories "makefile"

 DIRS = \ 
         dir1 \ 
         dir2 \ 
         dir3

 all: $(DIRS)

 $(DIRS):
         pushd $@ & nmake & popd

It explains why this is better to do it in one line...