在Linux coreutils包中编译特定的源文件

Question

我需要从Linux coreutils源文件编译cp（复制）和mv（移动）实用程序的特定版本。而不是使用以下命令编译整个程序包：

./configure
make

这需要很长时间，我如何才能仅编译cp（./src/cp.c）和mv（./src/mv.c）？

我试图删除不相关的c文件，但是cp.c和mv.c有太多依赖关系无法跟踪...而且我意识到这是简化问题的一种愚蠢方法。必须有一个单行或某些东西告诉make或gcc仅编译cp和mv！

使用的示例源代码：http : //ftp.gnu.org/gnu/coreutils/coreutils-8.21.tar.xz

提前致谢！

Answer 1

运行make src/cp src/mv后configure应该可以运行，但是coreutils构建系统没有正确设置依赖项。cp并mv取决于Makefile不会跟踪的生成的源文件。但是，您需要的生成文件是在default的开头立即创建的make all，因此您可以启动完整构建，并在超过限制后立即将其杀死GEN：

$ ./configure
...
$ make
  GEN    lib/alloca.h
  GEN    lib/c++defs.h
  ...
  GEN    src/version.c
  GEN    src/version.h
make  all-recursive
make[1]: Entering directory `/home/andrew/coreutils-8.21'
Making all in po
make[2]: Entering directory `/home/andrew/coreutils-8.21/po'
make[2]: Leaving directory `/home/andrew/coreutils-8.21/po'
Making all in .
make[2]: Entering directory `/home/andrew/coreutils-8.21'
  CC     lib/set-mode-acl.o
  CC     lib/copy-acl.o
^C
make[2]: *** wait: No child processes.  Stop.
make[2]: *** Waiting for unfinished jobs....
make[2]: *** wait: No child processes.  Stop.
make[1]: *** wait: No child processes.  Stop.
make[1]: *** Waiting for unfinished jobs....
make[1]: *** wait: No child processes.  Stop.
make: *** wait: No child processes.  Stop.
make: *** Waiting for unfinished jobs....
make: *** wait: No child processes.  Stop.

然后运行make src/cp src/mv以构建所需的程序：

$ make src/cp src/mv
  CC     src/cp.o
  CC     src/copy.o
  CC     src/cp-hash.o
  CC     src/extent-scan.o
  CC     src/version.o
  AR     src/libver.a
  CC     lib/argmatch.o
  CC     lib/argv-iter.o
  CC     lib/backupfile.o
  ... 230 other files ...
  CC     lib/vasprintf.o
  CC     lib/vfprintf.o
  CC     lib/vprintf.o
  AR     lib/libcoreutils.a
  CCLD   src/cp
  CC     src/mv.o
  CC     src/remove.o
  CCLD   src/mv
$ src/cp --version
cp (GNU coreutils) 8.21
Copyright (C) 2013 Free Software Foundation, Inc.
License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>.
This is free software: you are free to change and redistribute it.
There is NO WARRANTY, to the extent permitted by law.

Written by Torbjörn Granlund, David MacKenzie, and Jim Meyering.