Windows Makefile中的反斜杠 [英] Backslashes in Windows makefiles
问题描述
重要此后，我已经解决了特定Makefile的问题，但我不知道如何解决.
Important edit: I've since solved the problem with my specific makefile, but I don't know how.
我用反斜杠替换了反斜杠，结果证明我的规则可以正常使用.Gcc接受正斜杠和反斜杠的混合，因此效果很好. mkdir 存在一个棘手的问题:它不接受带有正斜杠和反斜杠混合的路径.我将变量更改为仅在Windows版本中包含反斜杠，现在文件可以正常工作了.
I replaced backslashes with forward slashes and it turns out my rules work fine with those. Gcc accepts mixed forward and back slashes, so it worked fine. A sticking point existed with mkdir: it doesn't accept paths with mixed forward and back slashes. I changed my variables to include only back slashes in the Windows version, and now the file works perfectly.
作为参考，这里有一些新的规则和变量:
For reference, here's some new rules and variables:
OUT = $(ROOT)\ outSRC = $(根)\ src$(OUT):mkdir $ {OUT)$(OUT)/％.o:$(SRC)/％.c$(CC)$(CFLAGS)-o $ @ -c $<
为什么minGW-make在变量扩展后为什么接受规则中的混合斜杠而不是仅反斜杠?到底是怎么回事?
Why does minGW-make accept mixed slashes in rules after variable expansion but not backslashes-only? What exactly is going here?
我为Windows安装了make的minGW.我复制了我的unix makefile，并将命令转换为Windows(将正斜杠转换为反斜杠)，但是生成的makefile不起作用.
I have a minGW install of make for windows. I copied my unix makefile and converted the commands to windows (and forward slashes to backslashes) but the resulting makefile does not work.
主要区别在于Windows具有 $(OUT)= $(ROOT)\ out \ win ，而Unix具有 $(OUT)= $(ROOT)/out .Unix可以正常工作.Windows上的 make -f makefile.win 抱怨< root> \ out \ win \ LinkedList.o 没有规则.有问题的规则和错误是:
The main difference is that Windows has $(OUT) = $(ROOT)\out\win and Unix has $(OUT) = $(ROOT)/out. Unix works fine. make -f makefile.win on windows complains that there is no rule for <root>\out\win\LinkedList.o. The rules and error in question are:
make:***没有规则可以使目标H:\ CodeRIT \ 1014Syllables \ out \ win \ LinkedList.o'所需.EXE文件'.停止.
<代码> $(OUT)\％.o:$(ROOT)\ src \％.cgcc $(CFLAGS)-o $ @ -c $<
<代码> $(OUT)\ bin \ syllables.exe:$(OUT)\ LinkedList.o $(OUT)\ Syllable.o $(OUT)\ Model.ogcc $(CFLAGS)-o $ @ $ ^
$(OUT)应该扩展为< root> \ out \ win ，从而给出它抱怨目标明确的文件.我不明白为什么该规则不起作用，因为相同的规则在Unix上也可以正常工作.是否有一些关于目标中最大目录的神秘规则?我没有足够的make经验来真正评估这里出了什么问题.
$(OUT) should expand to <root>\out\win giving the file it complains about a clear target. I don't understand why this rule doesn't work, given that the same rule works just fine on Unix. Is there some arcane rule about maximum directories in targets or something? I don't have enough experience with make to really assess what's going wrong here.
这是相关文件的全文: https://github.com/blastedt/syllables/blob/master/makefile.win
Here's the full text of the file in question: https://github.com/blastedt/syllables/blob/master/makefile.win
推荐答案
$(OUT)\%.o: does not define a pattern rule, you've escaped the %.
$(OUT)\\％.o:应该可以工作，尽管是因为这样的陷阱，所以在Windows上使用make时最好避免反斜杠.
$(OUT)\\%.o: should work in this case, although it's because of gotchas like this that it's best to avoid backslashes when using make on Windows.
您将遇到诸如 mkdir 和 del 之类的shell命令无法使用正斜杠的问题，您应该考虑切换到powershell，cygwin，MSYS2或在Windows上重击.
You will run into issues with shell commands like mkdir and del not working with forward slashes, you should consider switching to powershell, cygwin, MSYS2, or bash on windows.
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