Problem linking with boost 1, 51 64-bits from boostpro, VC10
Hi, I'm having some issues linking my code with the 64-bit version of boost 1.51 on windows with VC 10. I managed to write this small example that illustrates my problem. It is a project to create a DLL. I downloaded from boostpro.com. Here's the code: #include <boost/regex.hpp> #include <boost/filesystem.hpp> void useBoost() { } and the result. ------ Build started: Project: test-64, Configuration: Release x64 ------ UsesRegex.cpp UsesRegex.obj : error LNK2001: unresolved external symbol "class boost::system::error_category const & __cdecl boost::system::system_category(void)" (?system_category@system@boost@ @YAAEBVerror_category@12@XZ) UsesRegex.obj : error LNK2001: unresolved external symbol "class boost::system::error_category const & __cdecl boost::system::generic_category(void)" (?generic_category@system@boost@ @YAAEBVerror_category@12@XZ) C:\Users\aleblanc\projects\trunk\XDE\sandbox\alain\c-testing\test-64\x64\Release\test-64.dll : fatal error LNK1120: 2 unresolved externals ========== Build: 0 succeeded, 1 failed, 0 up-to-date, 0 skipped ========== However, if I comment out the include for filesystem.hpp it compiles ok. I have included the path to the boost libraries in the 'Additional Library Directories' property for the linker. otherwise it complains about not finding the library for boost_regex. Compiling for 32 bit (with the path for the libraries to a 32-bit installation of boost) works fine. Any suggestion would be appreciated. Thanks, a
Alain, It looks like VS cannot find the regex library. You must tell VS where to find it. Project -> Properties -> Linker -> General and additional libraries directories Also you must add the regex library Project -> Properties -> Linker -> Input. Last but not least, make sure that your lib is 64 bits. Cheers On Wed, Feb 6, 2013 at 9:56 PM, Alain Leblanc <aalebl@gmail.com> wrote:
Hi,
I'm having some issues linking my code with the 64-bit version of boost 1.51 on windows with VC 10. I managed to write this small example that illustrates my problem. It is a project to create a DLL. I downloaded from boostpro.com.
Here's the code:
#include <boost/regex.hpp> #include <boost/filesystem.hpp>
void useBoost() {
}
and the result.
------ Build started: Project: test-64, Configuration: Release x64 ------ UsesRegex.cpp UsesRegex.obj : error LNK2001: unresolved external symbol "class boost::system::error_category const & __cdecl boost::system::system_category(void)" (?system_category@system@boost@ @YAAEBVerror_category@12@XZ) UsesRegex.obj : error LNK2001: unresolved external symbol "class boost::system::error_category const & __cdecl boost::system::generic_category(void)" (?generic_category@system@boost@ @YAAEBVerror_category@12@XZ) C:\Users\aleblanc\projects\trunk\XDE\sandbox\alain\c-testing\test-64\x64\Release\test-64.dll : fatal error LNK1120: 2 unresolved externals ========== Build: 0 succeeded, 1 failed, 0 up-to-date, 0 skipped ==========
However, if I comment out the include for filesystem.hpp it compiles ok. I have included the path to the boost libraries in the 'Additional Library Directories' property for the linker. otherwise it complains about not finding the library for boost_regex. Compiling for 32 bit (with the path for the libraries to a 32-bit installation of boost) works fine.
Any suggestion would be appreciated.
Thanks,
a
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Le 06/02/13 21:56, Alain Leblanc a écrit :
Hi,
I'm having some issues linking my code with the 64-bit version of boost 1.51 on windows with VC 10. I managed to write this small example that illustrates my problem. It is a project to create a DLL. I downloaded from boostpro.com <http://boostpro.com>.
Here's the code:
#include <boost/regex.hpp> #include <boost/filesystem.hpp>
void useBoost() {
}
and the result.
------ Build started: Project: test-64, Configuration: Release x64 ------ UsesRegex.cpp UsesRegex.obj : error LNK2001: unresolved external symbol "class boost::system::error_category const & __cdecl boost::system::system_category(void)" (?system_category@system@boost@@YAAEBVerror_category@12@XZ) UsesRegex.obj : error LNK2001: unresolved external symbol "class boost::system::error_category const & __cdecl boost::system::generic_category(void)" (?generic_category@system@boost@@YAAEBVerror_category@12@XZ) C:\Users\aleblanc\projects\trunk\XDE\sandbox\alain\c-testing\test-64\x64\Release\test-64.dll : fatal error LNK1120: 2 unresolved externals ========== Build: 0 succeeded, 1 failed, 0 up-to-date, 0 skipped ==========
However, if I comment out the include for filesystem.hpp it compiles ok. I have included the path to the boost libraries in the 'Additional Library Directories' property for the linker. otherwise it complains about not finding the library for boost_regex. Compiling for 32 bit (with the path for the libraries to a 32-bit installation of boost) works fine.
Any suggestion would be appreciated. Are you linking with boost_system?
best, Vicente
To make a long story short: I compiled boost from source, and it worked, so I suspect either a problem with the package or, more likely, some file got corrupted while I downloaded or installed. I don't explicitly link with any library. I just indicate in VS where to look for libraries. It worked for years when compiling with 32-bit libraries, and it worked after I used the boost 64-bit library that I compiled myself, but didn't using the pre-built package that I downloaded. Only difference is that the pre-built one I downladed is 1.53, everything else was 1.51 and (sometimes much) earlier. Thanks for your help. a 2013/2/7 Vicente J. Botet Escriba <vicente.botet@wanadoo.fr>
Le 06/02/13 21:56, Alain Leblanc a écrit :
Hi,
I'm having some issues linking my code with the 64-bit version of boost 1.51 on windows with VC 10. I managed to write this small example that illustrates my problem. It is a project to create a DLL. I downloaded from boostpro.com.
Here's the code:
#include <boost/regex.hpp> #include <boost/filesystem.hpp>
void useBoost() {
}
and the result.
------ Build started: Project: test-64, Configuration: Release x64 ------ UsesRegex.cpp UsesRegex.obj : error LNK2001: unresolved external symbol "class boost::system::error_category const & __cdecl boost::system::system_category(void)" (?system_category@system@boost@ @YAAEBVerror_category@12@XZ) UsesRegex.obj : error LNK2001: unresolved external symbol "class boost::system::error_category const & __cdecl boost::system::generic_category(void)" (?generic_category@system@boost@ @YAAEBVerror_category@12@XZ) C:\Users\aleblanc\projects\trunk\XDE\sandbox\alain\c-testing\test-64\x64\Release\test-64.dll : fatal error LNK1120: 2 unresolved externals ========== Build: 0 succeeded, 1 failed, 0 up-to-date, 0 skipped ==========
However, if I comment out the include for filesystem.hpp it compiles ok. I have included the path to the boost libraries in the 'Additional Library Directories' property for the linker. otherwise it complains about not finding the library for boost_regex. Compiling for 32 bit (with the path for the libraries to a 32-bit installation of boost) works fine.
Any suggestion would be appreciated.
Are you linking with boost_system?
best, Vicente
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Alain Leblanc -
Didier J-P Guion Firmin -
Vicente J. Botet Escriba