c++ - libtool: install: error: 在安装之前用上面的命令重新链接 `libmyprog.la'

Question

我在我正在创作的项目中运行 make distcheck 时遇到名义链接错误:

$ uname -a
Linux vbox 3.2.0-26-generic #41-Ubuntu SMP Thu Jun 14 17:49:24 UTC 2012 x86_64 x86_64 x86_64 GNU/Linux
$ cat /etc/issue
Ubuntu 12.04 LTS \n \l

$ libtool --version
libtool (GNU libtool) 2.4.2
Written by Gordon Matzigkeit <gord@gnu.ai.mit.edu>, 1996

Copyright (C) 2011 Free Software Foundation, Inc.
This is free software; see the source for copying conditions.  There is NO
warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
$ g++ --version
g++ (Ubuntu/Linaro 4.6.3-1ubuntu5) 4.6.3
Copyright (C) 2011 Free Software Foundation, Inc.
This is free software; see the source for copying conditions.  There is NO
warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.

$ automake --version
automake (GNU automake) 1.11.3
Copyright (C) 2011 Free Software Foundation, Inc.
License GPLv2+: GNU GPL version 2 or later <http://gnu.org/licenses/gpl-2.0.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 Tom Tromey <tromey@redhat.com>
       and Alexandre Duret-Lutz <adl@gnu.org>.

如您所见，它将在使用 g++ 4.6 和 libtool 2.4.2 的 Ubuntu 12.04 上运行。在使用 g++ 4.2.1 和 libtool 2.4.2(均通过自制软件安装)的 OS X 10.7.4 上，不会出现该错误。它也没有出现在 make check 中。

这是 Makefile.am 的相关片段:

# -- myprog --
#

lib_LTLIBRARIES += myproj/myprog/libmyprog.la
myproj_myprog_libmyprog_la_SOURCES = # ...
myproj_myprog_libmyprog_la_LIBADD = myproj/mylib/libmylib.la

sbin_PROGRAMS += myproj/myprog/myprog
myproj_myprog_myprog_SOURCES = myproj/myprog/main.cc
myproj_myprog_myprog_LDADD = myproj/myprog/libmyprog.la

# -- mylib --
#

lib_LTLIBRARIES += myprog/mylib/libmylib.la
myproj_mylib_libmylib_la_SOURCES = # ...

错误本身:

/usr/bin/ld: cannot find -lmylib
collect2: ld returned 1 exit status
libtool: install: error: relink `myproj/myprog/libmyprog.la' with the above command before installing it

我该如何解决这个问题？

Answer 1

简而言之，顺序(显然)很重要:

# -- mylib --
#

lib_LTLIBRARIES += myprog/mylib/libmylib.la
myproj_mylib_libmylib_la_SOURCES = # ...

# -- myprog --
#

lib_LTLIBRARIES += myproj/myprog/libmyprog.la
myproj_myprog_libmyprog_la_SOURCES = # ...
myproj_myprog_libmyprog_la_LIBADD = myproj/mylib/libmylib.la

sbin_PROGRAMS += myproj/myprog/myprog
myproj_myprog_myprog_SOURCES = myproj/myprog/main.cc
myproj_myprog_myprog_LDADD = myproj/myprog/libmyprog.la

现在我的项目在所有提到的平台上构建(check 和 distcheck)。