如何在Alpine上编译time.c？

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问题描述

我不喜欢Alpine Linux中内置的 time 实用程序，而是想根据自己的需要进行改进-我想编辑 time.c 并将其编译为二进制文件。我已经完成了 apk add build-base 来安装gcc，并从Github复制了 time.c ，但是当我执行 gcc /tmp/time.c -o / tmp / time 时，我得到：

I don't like the built-in time utility in Alpine Linux and would like to improve it for my needs -- I want to edit the time.c and compile it to a binary. I have done the apk add build-base to install the gcc and have copypasted the time.c from Github, but when I do the gcc /tmp/time.c -o /tmp/time I get the:

/tmp/time.c:34:10: fatal error: libbb.h: No such file or directory
 #include "libbb.h"
          ^~~~~~~~~

所以我也复制粘贴了它，但是它依赖于更多的头文件。我在某处看到可能需要 apk add alpine-sdk ，也许它也可以保证版本兼容性，所以我做到了，但是gcc仍然看不到头文件。我应该提供一些 -I 标志吗？

我真正要做的是最终编译自定义的 time.c ？

So I copypasted it too but it relies on dozens more header files. I saw somewhere that I might need the apk add alpine-sdk and maybe it would also garantee version compatibility so I did it but gcc still does not see header files. Should I provide some -I flag?
What do I really have to do to finally compile my custom time.c?

PS：可能有一个时间的SO标签，但我不能

P.S.: there is probably a SO tag for time but I can't find it.

UPD：我已经复制了整个 include 文件夹，但是它说：

UPD: I've copied the whole include folder but it says:

In file included from /tmp/time.c:34:
include/libbb.h:406:42: error: 'ENABLE_FEATURE_VERBOSE' undeclared here (not in a function)
  FILEUTILS_VERBOSE         = (1 << 12) * ENABLE_FEATURE_VERBOSE, /* -v */
                                          ^~~~~~~~~~~~~~~~~~~~~~

但我什至找不到整个定义的地方

but I can't find where it's defined even in the whole https://github.com/mirror/busybox

UPD：哦，不，它更复杂。

UPD: oh no, it's more complex.

/ # ls -l `which time`
lrwxrwxrwx    1 root     root            12 Jan 30  2019 /usr/bin/time -> /bin/busybox

似乎没有 time这样的东西二进制。

推荐答案

假定GNU时间功能是您的后继选择，而BusyBox 时间不足以满足您的需求，只需安装软件包（最近在Alpine上可用）：

Assuming that GNU time functionality is what your after, and BusyBox time being insufficient for your needs, just install the GNU time package which was recently made available on Alpine:

apk add time --repository=http://dl-cdn.alpinelinux.org/alpine/edge/testing

安装后，它将替换 / usr / bin / time 带有GNU time可执行文件的BusyBox符号链接。

When installed, it will replace the /usr/bin/time BusyBox symlink with the GNU time executable.

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