Mac使用的BSD cp与大多数Linux发行版的GNU cp之间存在一些细微的差异.

There a few subtle differences between the BSD cp that Mac uses and the GNU cp of most linux distributions.

在Linux机器上考虑以下man cp片段:

Consider the following snippet of man cp from a linux box:

   -d     same as --no-dereference --preserve=links

   -P, --no-dereference
          never follow symbolic links in SOURCE

   --preserve[=ATTR_LIST]
          preserve  the  specified  attributes (default: mode,ownership,timestamps), if possible additional attributes: context,
          links, xattr, all

因此，基本上，它试图做的是复制以下路径，如果它们是链接，则仅复制链接，而不是底层文件."

So basically what it's trying to do is "copy the following paths, and if they're links, just copy the link, not the underlying file."

p选项在Mac下存在，等效于linux行为.但是，没有d选项.

The p option exists under Mac and is equivalent to the linux behavior. The d option, however, is absent.

我试图找到一种方法来模仿Mac cp上的复制链接，而不是目标"的行为，据我所知，没有令人愉快的方法.

I've tried to figure out a way to mimic the behavior of "copy links, not targets" with the Mac cp, and as far as I can tell, there's no pleasant way to do it.

幸运的是，这里的工作很艰巨.在Mac上的man cp中:

There is, fortunately, a gross work around. From man cp under Mac:

除非设置-R标志，否则始终遵循符号链接，在这种情况下，默认情况下不遵循符号链接.

Symbolic links are always followed unless the -R flag is set, in which case symbolic links are not followed, by default.

换句话说，由于我们知道我们只是在复制文件，因此您可以简单地将d标志替换为R标志.行为在技术上有所不同(非常有所不同)，但在此特定情况下无关紧要.您需要找到Makefile中使用的cp标志(希望在文件顶部的CP变量中)并只需对其进行更改.

In other words, since we know we're only copying files, you can simply replace the d flag with the R flag. The behavior is technically different (very different), but it won't matter in this specific case. You'll need to find the cp flags used in the Makefile (hopefully in a CP variable at the top of the file) and simply change them.

如果确定cp是Makefile中要执行的最后一件事，则还可以复制并粘贴它，而不用更改Makefile.

If you're sure the cp is the last thing to be executed in the Makefile, you could also just copy and paste it instead of changing the Makefile.