Dev-C ++ / TDM-GCC：Boost Libaries的链接问题从boost.org下载

Question

I'm trying to use regex in Dev-C++ (tdm-gcc 4.7.1).

I've downloaded Boost libraries from boost.org and unpack to

C:\Program Files (x86)\Dev-Cpp\boost

And in Dev-C++ added

C:\Program Files (x86)\Dev-Cpp\boost\libs

to libraries.

Include paths (C/C++):

C:\Program Files (x86)\Dev-Cpp\boost

main.cpp :

#include <boost/regex.hpp> 
using namespace boost; 
int main()
{
   string s ("some txt PING :665454 some_text");
   smatch mt;
  regex r ("PING :(\\d+) "); // error

    system( "pause" );
    return 0;
}

Error:

D:\programowanie\dev-c++\main12\main.o  main.cpp:(.text$_ZN5boost9re_detail27cpp_regex_traits_char_layerIcEC2ERKNS0_21cpp_regex_traits_baseIcEE[_ZN5boost9re_detail27cpp_regex_traits_char_layerIcEC2ERKNS0_21cpp_regex_traits_baseIcEE]+0xc3): undefined reference to `boost::re_detail::cpp_regex_traits_char_layer<char>::init()'
D:\programowanie\dev-c++\main12\main.o  main.cpp:(.text$_ZN5boost9re_detail11raw_storage6extendEy[_ZN5boost9re_detail11raw_storage6extendEy]+0x60): undefined reference to `boost::re_detail::raw_storage::resize(unsigned long long)'
c:\program files (x86)\dev-cpp\mingw64\x86_64-w64-mingw32\bin\ld.exe    main12/main.o: bad reloc address 0x60 in section `.text$_ZN5boost9re_detail11raw_storage6extendEy[_ZN5boost9re_detail11raw_storage6extendEy]'
c:\program files (x86)\dev-cpp\mingw64\x86_64-w64-mingw32\bin\ld.exe    final link failed: Invalid operation
D:\programowanie\dev-c++\collect2.exe   [Error] ld returned 1 exit status

Answer 1

I don't think you could have downloaded binaries from Boost exactly targeting TDM-GCC. As a result, no matter what, you'll hit a classical problem with name mangling which is different across compilers/toolchains. If you downloaded from Boost binaries , then it's clearly written that these binaries were built with MSVC, and therefore now you have trouble directly linking to these Boost libraries with TDM-GCC because of different name mangling conventions.

You have 3 options:

1. Use MSVC to build your project;
2. Build Boost libraries from source yourself with your current toolchain, ie TDM-GCC;

3. Use my builds of Boost libraries - Boost for Windows (latest version is 1.54.0) for latest MinGW-w64 toolchains (currently 2 variants). So, in addition to binaries, you'd have to download the corresponding toolchain variant of MinGW-w64 (link are there as well) and use it to build your project.

   NOTE: Although you can build and link your project against my binaries with your TDM-GCC because name mangling is the same (since TDM-GCC is just a derivative of MinGW-w64), the resulting application will be subject to crashes as binaries produced by MinGW-w64 are binary incompatible with TDM-GCC due to patching policies of TDM-GCC.

Finally, as stated in comments already, it's not enough just to set paths where Boost libraries can be found, but it is also necessary to explicitly tell the compiler which library you want to link your project against. For the GCC family of compilers (MinGW, MinGW-w64, TDM-GCC) it is done with the -l switch. So find where you can specify linker options in Dev-C++ for your project, and add -lboost_regex . It will instruct the compiler to fetch libboost_regex.a from the library search paths (that you've already specified) and link to your project.