C++ 如何在 Linux 中正确链接 boost 库
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How to link boost libraries properly in Linux
提问by Athan
I've been trying to go through Boost tutorials but I got stuck at linking the filesystem library.
我一直在尝试阅读 Boost 教程，但在链接文件系统库时遇到了困难。
I have Ubuntu 12.10. Installation wasn't that hard
我有 Ubuntu 12.10。安装没那么难
sudo apt-get install libboost-all-dev
This put all headers in /usr/local/include and compiled sources in /usr/lib/
[--headers]
[--binaries]
这将所有头文件放在 /usr/local/include 中，并将编译源放在 /usr/lib/
[--headers]
[--binaries] 中
I wrote this program [--program]. When I tried to compiled it
我写了这个程序 [--program]。当我试图编译它时
g++ -g tut1.cpp -o tut1 -lboost_system -lboost_filesystem
got this errors: [--errors].
After a little search on http://www.boost.org/doc/libs/1_53_0/more/getting_started/unix-variants.html
I tried this:
得到这个错误：[--errors]。
在http://www.boost.org/doc/libs/1_53_0/more/getting_started/unix-variants.html上进行了一些搜索后，
我尝试了这个：
g++ -g -I /usr/local/include/boost/ tut1.cpp -o tut1 -L /usr/lib/libboost_filesystem.a -lboost_system -lboost_filesystem
but didn't have luck. I had the same errors.
但没有运气。我有同样的错误。
Since I cannot put more than 2 links in the post, here are all links
http://pastebin.com/DakVFn12
由于我不能在帖子中放置超过 2 个链接，这里是所有链接
http://pastebin.com/DakVFn12
回答by Athan
I found the answer myself here:
http://www.richelbilderbeek.nl/CppLinkErrorUndefinedReferenceToBoostFilesystemDetailGet_current_path_api.htm
Looks like binaries weren't in /usr/lib but in /usr/local/lib.
So the correct command for compilation would be:
我自己在这里找到了答案：
http:
//www.richelbilderbeek.nl/CppLinkErrorUndefinedReferenceToBoostFilesystemDetailGet_current_path_api.htm 看起来二进制文件不在 /usr/lib 中，而是在 /usr/local/lib 中。
所以正确的编译命令是：
g++ -g tut1.cpp -o tut1 -L/usr/local/lib/ -lboost_filesystem
@Yuushi, that was 1 problem.
@Yuushi，这是 1 个问题。
回答by Yuushi
The -Lcommand should be the base path where the libraries are contained, not the path to a specific library. Try with -L /usr/lib/instead.
该-L命令应该是包含库的基本路径，而不是特定库的路径。试试吧-L /usr/lib/。
