在Windows和类Unix系统之间有区别的Makefile [英] Makefile that distincts between Windows and Unix-like systems

问题描述

我希望在Linux和Windows上具有相同的Makefile.我在Linux上使用默认的 GNU make ，在Windows上使用 mingw32-make (也是 GNU make ).

I would like to have the same Makefile for building on Linux and on Windows. I use the default GNU make on Linux and the mingw32-make (also GNU make) on Windows.

我希望Makefile能够检测它是否在Windows或Linux上运行.

I want the Makefile to detect whether it operates on Windows or Linux.

例如Windows上的make clean命令如下所示:

For example make clean command on Windows looks like:

clean:
    del $(DESTDIR_TARGET)

但是在Linux上:

clean:
    rm $(DESTDIR_TARGET)

我还想在Windows(\)和Linux(/)上使用不同的目录分隔符.

Also I would like to use different directory separator on Windows (\) and Linux (/).

可以在Makefile中检测Windows操作系统吗?

PS:我不想在Windows(cygwin等)上模拟Linux

有一个类似的问题:操作系统正在检测Makefile ，但我在这里找不到答案.

There is similiar question: OS detecting makefile, but I didn't find the answer here.

推荐答案

我通过查找仅在Windows上设置的env变量来解决了这个问题.

I solved this by looking for an env variable that will only be set on windows.

ifdef OS
   RM = del /Q
   FixPath = $(subst /,\,$1)
else
   ifeq ($(shell uname), Linux)
      RM = rm -f
      FixPath = $1
   endif
endif

clean:
    $(RM) $(call FixPath,objs/*)

由于％OS％是Windows的类型，因此应在所有Windows计算机上设置，但不能在Linux上设置.

Because %OS% is the type of windows, it should be set on all Windows computers but not on Linux.

然后，这些块为不同的程序设置变量，以及将正斜杠转换为反斜杠的功能.

The blocks then setups up variables for the different programs as well as a function for converting the forward slashes into backslashes.

调用外部命令时必须使用$(调用FixPath，path)(内部命令可以正常使用).您还可以使用类似的内容:

You to have to use $(call FixPath,path) when you call an outside command (internal commands work fine). You could also use something like:

/ := /

然后

objs$(/)*

如果您更喜欢这种格式.

if you like that format better.

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