How do I resolve LNK1104 error with Boost Filesystem Library in MSCV?

Question

I am having trouble getting my project to link to the Boost (version 1.37.0) Filesystem lib file in Microsoft Visual C++ 2008 Express Edition. The Filesystem library is not a header-only library. I have been following the Getting Started on Windows guide posted on the official boost web page. Here are the steps I have taken:

1. I used bjam to build the complete set of lib files using:

   bjam --build-dir="C:\Program Files\boost\build-boost" --toolset=msvc --build-type=complete
   

2. I copied the /libs directory (located in C:\Program Files\boost\build-boost\boost\bin.v2) to C:\Program Files\boost\boost_1_37_0\libs.

3. In Visual C++, under Project > Properties > Additional Library Directories I added these paths:

   • C:\Program Files\boost\boost_1_37_0\libs
   • C:\Program Files\boost\boost_1_37_0\libs\filesystem\build\msvc-9.0express\debug\link-static\threading-multi

   I added the second one out of desperation. It is the exact directory where libboost_system-vc90-mt-gd-1_37.lib resides.

4. In Configuration Properties > C/C++ > General > Additional Include Directories I added the following path:

   • C:\Program Files\boost\boost_1_37_0

5. Then, to put the icing on the cake, under Tools > Options VC++ Directories > Library files, I added the same directories mentioned in step 3.

Despite all this, when I build my project I get the following error:

fatal error LNK1104: cannot open file 'libboost_system-vc90-mt-gd-1_37.lib'

Additionally, here is the code that I am attempting to compile as well as a screen shot of the aformentioned directory where the (assumedly correct) lib file resides:

#include "boost/filesystem.hpp"   // includes all needed Boost.Filesystem declarations
#include <iostream>               // for std::cout
using boost::filesystem;          // for ease of tutorial presentation;
                                  //  a namespace alias is preferred practice in real code

using namespace std;

int main()
{
    cout << "Hello, world!" << endl;

    return 0;
}

Answer 1

Ferruccio's answer contains most of the insight. However, Pukku made me realize my mistake. I am posting my own answer to give a full explanation. As Ferruccio explained, Filesystem relies on two libraries. For me, these are:

• libboost_system-vc90-mt-gd-1_37.lib
• libboost_filesystem-vc90-mt-gd-1_37.lib

I must not have noticed that when I supplied the directory for libboost_filesystem-vc90-mt-gd-1_37.lib, the error output changed from

fatal error LNK1104: cannot open file 'libboost_filesystem-vc90-mt-gd-1_37.lib'

to

fatal error LNK1104: cannot open file 'libboost_system-vc90-mt-gd-1_37.lib'

Causing me to think that the error was persisting. This lead me to post some rather inaccurate information. Also, after reading that Filesystem requires two libraries, I now see the significance of the keyword stage for the bjam command. Supplying

bjam --build-dir="C:\Program Files\boost\build-boost" --toolset=msvc --build-type=complete stage

Causes bjam to place an additional directory, aptly named stage, in the boost_1_37_0 directory. This folder contains a folder named /lib, which has copies of all of the lib files in one place. This is convenient for Visual C++ because you can supply it with this single directory and it will take care of all of the dependencies.

Answer 2

boost::filesystem is dependent on boost::system, so you need both paths.

Part of the problem is you're using the boost libs out of the build directories instead of the install directory (the boost build process should create both). The install/lib directory has all the libs so you only need to specify one path.

The boost build process builds each library in its own directory. At the end it copies all those .lib files into one common lib directory.

Since you didn't specify an install directory as part of your build command (with --prefix=...), I believe the default is C:\Boost. Check to see if that directory is there and if so use C:\boost\include\ boost-1_37 for your include path and C:\boost\lib for your library path.

Answer 3

Last answer is right. But you should find boost config file $BOOST\config\user.hpp and uncomment this directive #define BOOST_ALL_DYN_LINK. Now it begin use dynamic link with boost and it should works.