System specifics

Operating system: Ubuntu 10.04 LTS Lucid Lynx

IDE: Qt Creator 2.0.0

Project type: console application

Compiler: G++ 4.4.1

Libraries used:

Boost: version 1.40
STL: from GCC, shipped with Qt Creator 2.0.0

Source code: main.cpp


#include <iostream>

#include <string>

#include <vector>

//---------------------------------------------------------------------------

#include <boost/filesystem.hpp>

//---------------------------------------------------------------------------

//From http://www.richelbilderbeek.nl/CppGetFilesInFolder.htm

const std::vector<std::string> GetFilesInFolder(const std::string& folder)

{

  std::vector<std::string> v;



  const boost::filesystem::path my_folder

    = boost::filesystem::system_complete(

        boost::filesystem::path(folder));



  if (!boost::filesystem::is_directory(my_folder)) return v;



  const boost::filesystem::directory_iterator j;

  for ( boost::filesystem::directory_iterator i(my_folder);

        i != j;

        ++i)

  {

    if ( boost::filesystem::is_regular_file( i->status() ) )

    {

      const std::string filename = i->path().filename();

      //const std::string full_filename = folder + "/" + filename;

      v.push_back(filename);

    }

  }

  return v;

}

//---------------------------------------------------------------------------

//From http://www.richelbilderbeek.nl/CppGetPath.htm

const std::string GetPath(const std::string& filename)

{

  return boost::filesystem::path(filename).parent_path().string();

}

//---------------------------------------------------------------------------

int main(int, char* argv[])

{

  const std::vector<std::string> v = GetFilesInFolder(GetPath(argv[0]));

  std::copy(v.begin(),v.end(),std::ostream_iterator<std::string>(std::cout,"\n"));

  std::cout << "Number of files: " << v.size() << '\n';

}

//---------------------------------------------------------------------------

Process

Just follow the approach by [1]:


wget http://download.savannah.nongnu.org/releases/mingw-cross-env/mingw-cross-env-2.15.tar.gz

tar -xzvf mingw-cross-env-2.15.tar.gz

make


[build]    binutils

[done]     binutils

[download] gcc-gmp

[done]     gcc-gmp

[download] gcc-mpc

[done]     gcc-mpc

[download] gcc-mpfr

[done]     gcc-mpfr

[download] gcc

[build]    gcc

[done]     gcc

[download] libiconv

[build]    libiconv

[done]     libiconv

[download] gettext

[build]    gettext

[done]     gettext

[download] pcre

[build]    pcre

[done]     pcre

[download] zlib

[build]    zlib

[done]     zlib

[download] glib

[build]    glib



Failed to build package glib!

------------------------------------------------------------

(cd '/home/richel/mingw-cross-env-2.15/tmp-glib/glib-2.25.7' && patch -p1 -u) < ./src/glib-5-fix-stray-commas.patch

patching file gio/gioenums.h

cd '/home/richel/mingw-cross-env-2.15/tmp-glib/glib-2.25.7' && aclocal

bash: aclocal: command not found

make[1]: *** [build-only-glib] Error 127

make[1]: Leaving directory `/home/richel/mingw-cross-env-2.15'

real	0m2.364s

user	0m2.108s

sys	0m0.212s

------------------------------------------------------------

[log]      /home/richel/mingw-cross-env-2.15/log/glib



make: *** [/home/richel/mingw-cross-env-2.15/usr/installed/glib] Error 1

Tried to obtain 'aclocal' from an Ubuntu terminal:


sudo apt-get install aclocal

Screen output:


[sudo] password for richel: 

Reading package lists... Done

Building dependency tree       

Reading state information... Done

E: Couldn't find package aclocal

This approach fails due to the absence of aclocal.

But I would be happy if I could use Boost and the STL, so I try to make Qt:


make qt

Screen output:


[download] libodbc++

[build]    libodbc++



Failed to build package libodbc++!

------------------------------------------------------------

patching file src/datastream.h

patching file include/odbc++/resultset.h

cd '/home/richel/mingw-cross-env-2.15/tmp-libodbc++/libodbc++-0.2.5' && autoconf

bash: autoconf: command not found

make[1]: *** [build-only-libodbc++] Error 127

make[1]: Leaving directory `/home/richel/mingw-cross-env-2.15'

real	0m0.289s

user	0m0.236s

sys	0m0.044s

------------------------------------------------------------

[log]      /home/richel/mingw-cross-env-2.15/log/libodbc++



make: *** [/home/richel/mingw-cross-env-2.15/usr/installed/libodbc++] Error 1

Installing autoconf:


sudo apt-get install autoconf

Well, just install all programs as stated in the prerequisites:


sudo aptitude install -R autoconf automake bash bison bzip2 cmake flex g++ make sed libtool openssl libssl-dev patch perl pkg-config scons unzip wget

Try to make qt again:


make qt

Screen output:


[build]    libodbc++

[done]     libodbc++

[download] libgpg_error

[build]    libgpg_error

[done]     libgpg_error

[download] libgcrypt

[build]    libgcrypt

[done]     libgcrypt

[download] openssl

[build]    openssl

[done]     openssl

[download] postgresql

[build]    postgresql

[done]     postgresql

[download] freetds

[build]    freetds

[done]     freetds

[download] libpng

[build]    libpng

[done]     libpng

[download] jpeg

[build]    jpeg

[done]     jpeg

[download] libmng

[build]    libmng

[done]     libmng

[download] tiff

[build]    tiff

[done]     tiff

[download] giflib

[build]    giflib

[done]     giflib

[download] sqlite

[build]    sqlite

[done]     sqlite

[download] qt

[build]    qt

[done]     qt

I also want to use Boost:


make boost

Screen output:


[download] bzip2

[build]    bzip2

[done]     bzip2

[download] expat

[build]    expat

[done]     expat

[download] boost

[build]    boost

[done]     boost

According to [1], I had to 'Edit your .bashrc script in order to change $PATH', so I typed:


sudo gedit /etc/bash.bashrc

I added this at the second line of '/etc/bash.bashrc':


export PATH=/home/richel/mingw-cross-env-2.15/usr/bin:$PATH

After navigating to the folder ('cd /home/richel/qtsdk-2010.04/bin/Projects/Website/CppQtCrosscompileToWindowsExample15') I tried it out:


i686-pc-mingw32-qmake CppQtCrosscompileToWindowsExample15.pro

No screen output...

Now running make:


make

Screen output:


make -f Makefile.Release

make[1]: Entering directory `/home/richel/qtsdk-2010.04/bin/Projects/Website/CppQtCrosscompileToWindowsExample15'

i686-pc-mingw32-g++ -c -pipe -O2 -frtti -fexceptions -mthreads -Wall -DUNICODE -DQT_LARGEFILE_SUPPORT -DQT_NO_DEBUG -DQT_CORE_LIB -DQT_THREAD_SUPPORT -I'/home/richel/mingw-cross-env-2.15/usr/i686-pc-mingw32/include/QtCore' -I'/home/richel/mingw-cross-env-2.15/usr/i686-pc-mingw32/include' -I'/home/richel/mingw-cross-env-2.15/usr/i686-pc-mingw32/include/ActiveQt' -I'release' -I'/home/richel/mingw-cross-env-2.15/usr/i686-pc-mingw32/mkspecs/unsupported/win32-g++-cross' -o release/main.o main.cpp

i686-pc-mingw32-g++ -enable-stdcall-fixup -Wl,-enable-auto-import -Wl,-enable-runtime-pseudo-reloc -Wl,-s -Wl,-subsystem,console -mthreads -Wl -o release/CppQtCrosscompileToWindowsExample15.exe release/main.o  -L'/home/richel/mingw-cross-env-2.15/usr/i686-pc-mingw32/lib' -L/usr/local/lib -lboost_filesystem -lQtCore -lkernel32 -luser32 -lshell32 -luuid -lole32 -ladvapi32 -lws2_32 -lz 

/home/richel/mingw-cross-env-2.15/usr/lib/gcc/i686-pc-mingw32/4.5.0/../../../../i686-pc-mingw32/bin/ld: cannot find -lboost_filesystem

collect2: ld returned 1 exit status

make[1]: *** [release/CppQtCrosscompileToWindowsExample15.exe] Error 1

make[1]: Leaving directory `/home/richel/qtsdk-2010.04/bin/Projects/Website/CppQtCrosscompileToWindowsExample15'

make: *** [release] Error 2

I changed the Qt Creator project file (called CppQtCrosscompileToWindowsExample15.pro):


#-------------------------------------------------

#

# Project created by QtCreator 2010-09-25T09:43:28

#

#-------------------------------------------------

QT       += core

QT       -= gui

LIBS += -L/usr/lib -lboost_filesystem

TARGET = CppQtCrosscompileToWindowsExample15

CONFIG   += console

CONFIG   -= app_bundle

TEMPLATE = app

SOURCES += main.cpp

Screen output:


make -f Makefile.Release

make[1]: Entering directory `/home/richel/qtsdk-2010.04/bin/Projects/Website/CppQtCrosscompileToWindowsExample15'

i686-pc-mingw32-g++ -enable-stdcall-fixup -Wl,-enable-auto-import -Wl,-enable-runtime-pseudo-reloc -Wl,-s -Wl,-subsystem,console -mthreads -Wl -o release/CppQtCrosscompileToWindowsExample15.exe release/main.o  -L'/home/richel/mingw-cross-env-2.15/usr/i686-pc-mingw32/lib' -L/usr/lib -lboost_filesystem -lQtCore -lkernel32 -luser32 -lshell32 -luuid -lole32 -ladvapi32 -lws2_32 -lz 

release/main.o:main.cpp:(.text+0x84f): undefined reference to 'boost::system::get_system_category()''

release/main.o:main.cpp:(.text+0x859): undefined reference to `boost::system::get_generic_category()'

release/main.o:main.cpp:(.text+0x863): undefined reference to `boost::system::get_generic_category()'

release/main.o:main.cpp:(.text+0x86d): undefined reference to `boost::system::get_generic_category()'

release/main.o:main.cpp:(.text+0x877): undefined reference to `boost::system::get_system_category()'

release/main.o:main.cpp:(.text$_ZN5boost6detail17sp_counted_impl_pINS_10filesystem6detail11dir_itr_impINS2_10basic_pathISsNS2_11path_traitsEEEEEE7disposeEv[boost::detail::sp_counted_impl_p<boost::filesystem::detail::dir_itr_imp<boost::filesystem::basic_path<std::basic_string<char, std::char_traits<char>, std::allocator<char> >, boost::filesystem::path_traits> > >::dispose()]+0x4a): undefined reference to `boost::filesystem::detail::dir_itr_close(void*&)'

release/main.o:main.cpp:(.text$_ZN5boost14checked_deleteINS_10filesystem6detail11dir_itr_impINS1_10basic_pathISsNS1_11path_traitsEEEEEEEvPT_[void boost::checked_delete<boost::filesystem::detail::dir_itr_imp<boost::filesystem::basic_path<std::basic_string<char, std::char_traits<char>, std::allocator<char> >, boost::filesystem::path_traits> > >(boost::filesystem::detail::dir_itr_imp<boost::filesystem::basic_path<std::basic_string<char, std::char_traits<char>, std::allocator<char> >, boost::filesystem::path_traits> >*)]+0x47): undefined reference to `boost::filesystem::detail::dir_itr_close(void*&)'

release/main.o:main.cpp:(.text$_ZN5boost10filesystem12is_directoryINS0_10basic_pathISsNS0_11path_traitsEEEEENS_9enable_ifINS0_13is_basic_pathIT_EEbE4typeERKS7_[boost::enable_if<boost::filesystem::is_basic_path<boost::filesystem::basic_path<std::basic_string<char, std::char_traits<char>, std::allocator<char> >, boost::filesystem::path_traits> >, bool>::type boost::filesystem::is_directory<boost::filesystem::basic_path<std::basic_string<char, std::char_traits<char>, std::allocator<char> >, boost::filesystem::path_traits> >(boost::filesystem::basic_path<std::basic_string<char, std::char_traits<char>, std::allocator<char> >, boost::filesystem::path_traits> const&)]+0x5b): undefined reference to `boost::system::get_system_category()'

release/main.o:main.cpp:(.text$_ZN5boost10filesystem12is_directoryINS0_10basic_pathISsNS0_11path_traitsEEEEENS_9enable_ifINS0_13is_basic_pathIT_EEbE4typeERKS7_[boost::enable_if<boost::filesystem::is_basic_path<boost::filesystem::basic_path<std::basic_string<char, std::char_traits<char>, std::allocator<char> >, boost::filesystem::path_traits> >, bool>::type boost::filesystem::is_directory<boost::filesystem::basic_path<std::basic_string<char, std::char_traits<char>, std::allocator<char> >, boost::filesystem::path_traits> >(boost::filesystem::basic_path<std::basic_string<char, std::char_traits<char>, std::allocator<char> >, boost::filesystem::path_traits> const&)]+0xb9): undefined reference to `boost::filesystem::detail::status_api(std::basic_string<char, std::char_traits<char>, std::allocator<char> > const&, boost::system::error_code&)'

release/main.o:main.cpp:(.text$_ZN5boost10filesystem6statusINS0_10basic_pathISsNS0_11path_traitsEEEEENS_9enable_ifINS0_13is_basic_pathIT_EENS0_11file_statusEE4typeERKS7_[boost::enable_if<boost::filesystem::is_basic_path<boost::filesystem::basic_path<std::basic_string<char, std::char_traits<char>, std::allocator<char> >, boost::filesystem::path_traits> >, boost::filesystem::file_status>::type boost::filesystem::status<boost::filesystem::basic_path<std::basic_string<char, std::char_traits<char>, std::allocator<char> >, boost::filesystem::path_traits> >(boost::filesystem::basic_path<std::basic_string<char, std::char_traits<char>, std::allocator<char> >, boost::filesystem::path_traits> const&)]+0x5b): undefined reference to `boost::system::get_system_category()'

release/main.o:main.cpp:(.text$_ZN5boost10filesystem6statusINS0_10basic_pathISsNS0_11path_traitsEEEEENS_9enable_ifINS0_13is_basic_pathIT_EENS0_11file_statusEE4typeERKS7_[boost::enable_if<boost::filesystem::is_basic_path<boost::filesystem::basic_path<std::basic_string<char, std::char_traits<char>, std::allocator<char> >, boost::filesystem::path_traits> >, boost::filesystem::file_status>::type boost::filesystem::status<boost::filesystem::basic_path<std::basic_string<char, std::char_traits<char>, std::allocator<char> >, boost::filesystem::path_traits> >(boost::filesystem::basic_path<std::basic_string<char, std::char_traits<char>, std::allocator<char> >, boost::filesystem::path_traits> const&)]+0xb9): undefined reference to `boost::filesystem::detail::status_api(std::basic_string<char, std::char_traits<char>, std::allocator<char> > const&, boost::system::error_code&)'

release/main.o:main.cpp:(.text$_ZN5boost10filesystem15system_completeINS0_10basic_pathISsNS0_11path_traitsEEEEENS_9enable_ifINS0_13is_basic_pathIT_EES7_E4typeERKS7_[boost::enable_if<boost::filesystem::is_basic_path<boost::filesystem::basic_path<std::basic_string<char, std::char_traits<char>, std::allocator<char> >, boost::filesystem::path_traits> >, boost::filesystem::basic_path<std::basic_string<char, std::char_traits<char>, std::allocator<char> >, boost::filesystem::path_traits> >::type boost::filesystem::system_complete<boost::filesystem::basic_path<std::basic_string<char, std::char_traits<char>, std::allocator<char> >, boost::filesystem::path_traits> >(boost::filesystem::basic_path<std::basic_string<char, std::char_traits<char>, std::allocator<char> >, boost::filesystem::path_traits> const&)]+0xc1): undefined reference to `boost::filesystem::detail::get_full_path_name_api(std::basic_string<char, std::char_traits<char>, std::allocator<char> > const&, std::basic_string<char, std::char_traits<char>, std::allocator<char> >&)'

release/main.o:main.cpp:(.text$_ZN5boost10filesystem24basic_directory_iteratorINS0_10basic_pathISsNS0_11path_traitsEEEE9incrementEv[boost::filesystem::basic_directory_iterator<boost::filesystem::basic_path<std::basic_string<char, std::char_traits<char>, std::allocator<char> >, boost::filesystem::path_traits> >::increment()]+0x7e): undefined reference to `boost::system::get_system_category()'

release/main.o:main.cpp:(.text$_ZN5boost10filesystem24basic_directory_iteratorINS0_10basic_pathISsNS0_11path_traitsEEEE9incrementEv[boost::filesystem::basic_directory_iterator<boost::filesystem::basic_path<std::basic_string<char, std::char_traits<char>, std::allocator<char> >, boost::filesystem::path_traits> >::increment()]+0xb5): undefined reference to `boost::filesystem::detail::dir_itr_increment(void*&, std::basic_string<char, std::char_traits<char>, std::allocator<char> >&, boost::filesystem::file_status&, boost::filesystem::file_status&)'

release/main.o:main.cpp:(.text$_ZN5boost10filesystem24basic_directory_iteratorINS0_10basic_pathISsNS0_11path_traitsEEEE6m_initERKS4_[boost::filesystem::basic_directory_iterator<boost::filesystem::basic_path<std::basic_string<char, std::char_traits<char>, std::allocator<char> >, boost::filesystem::path_traits> >::m_init(boost::filesystem::basic_path<std::basic_string<char, std::char_traits<char>, std::allocator<char> >, boost::filesystem::path_traits> const&)]+0xd4): undefined reference to `boost::filesystem::detail::dir_itr_first(void*&, std::basic_string<char, std::char_traits<char>, std::allocator<char> > const&, std::basic_string<char, std::char_traits<char>, std::allocator<char> >&, boost::filesystem::file_status&, boost::filesystem::file_status&)'

release/main.o:main.cpp:(.text$_ZN5boost10filesystem24basic_directory_iteratorINS0_10basic_pathISsNS0_11path_traitsEEEE6m_initERKS4_[boost::filesystem::basic_directory_iterator<boost::filesystem::basic_path<std::basic_string<char, std::char_traits<char>, std::allocator<char> >, boost::filesystem::path_traits> >::m_init(boost::filesystem::basic_path<std::basic_string<char, std::char_traits<char>, std::allocator<char> >, boost::filesystem::path_traits> const&)]+0x24e): undefined reference to `boost::system::get_system_category()'

release/main.o:main.cpp:(.text$_ZN5boost10filesystem24basic_directory_iteratorINS0_10basic_pathISsNS0_11path_traitsEEEE6m_initERKS4_[boost::filesystem::basic_directory_iterator<boost::filesystem::basic_path<std::basic_string<char, std::char_traits<char>, std::allocator<char> >, boost::filesystem::path_traits> >::m_init(boost::filesystem::basic_path<std::basic_string<char, std::char_traits<char>, std::allocator<char> >, boost::filesystem::path_traits> const&)]+0x311): undefined reference to `boost::filesystem::detail::not_found_error()'

collect2: ld returned 1 exit status

make[1]: *** [release/CppQtCrosscompileToWindowsExample15.exe] Error 1

make[1]: Leaving directory `/home/richel/qtsdk-2010.04/bin/Projects/Website/CppQtCrosscompileToWindowsExample15'

make: *** [release] Error 2

The error is familiar: undefined reference to 'boost::system::get_system_category()'.

References

[1] http://mingw-cross-env.nongnu.org/#tutorial

Tutorial Step 1: Download and Unpack First, you should ensure that your system meets mingw-cross-env's requirements. You probably need to install some stuff. When everything is fine, download the latest release: wget http://download.savannah.nongnu.org/releases/mingw-cross-env/mingw-cross-env-2.15.tar.gz and unpack the tarball: tar -xzvf mingw-cross-env-2.15.tar.gz If you don't mind installing it in your home directory, just skip the following step and go straight to step 3. Step 2: System-wide Installation (optional) Now you should save any previous installation of the mingw-cross-env. Assuming you've installed it under /opt/mingw (any other directory will do as well), you should execute the following commands: su mv /opt/mingw /opt/mingw.old exit Then you need to transfer the entire directory to its definitive location. We will assume again you use /opt/mingw, but feel free to use any other directory if you like. su mv mingw-cross-env-2.15 /opt/mingw exit We're almost done. Just change to your newly created directory and get going: cd /opt/mingw Step 3: Build mingw-cross-env Enter the directory where you've unpacked the mingw-cross-env. Now it depends on what you actually want ? or need. If you choose to enter: make you're in for a long wait, because it compiles a lot of packages. On the other hand it doesn't require any intervention, so you're free to do whatever you like ? like watch a movie or go for a night on the town. When it's done you'll find that you've installed a very capable Win32 cross compiler onto your system. If you only need the most basic tools you can also use: make gcc and add any additional packages you need later on. You can also supply a host of packages on the command line, e.g.: make gtk lua libidn You'll always end up with a consistent cross compiling environment. After you're done it just needs a little post-installation. Step 4: Environment Variables Edit your .bashrc script in order to change $PATH: export PATH=/where mingw-cross-env is installed/usr/bin:$PATH Note that any compiler related environment variables (like $CC, $LDFLAGS, etc.) may spoil your compiling pleasure, so be sure to delete or disable those. Congratulations! You're ready to cross compile anything you like. Step 5a: Cross compile your Project (Autotools) If you use the Autotools, all you have to do is: ./configure --host=i686-pc-mingw32 make Don't worry about a warning like this: configure: WARNING: If you wanted to set the --build type, don't use --host. If a cross compiler is detected then cross compile mode will be used. Everything will be just fine. Step 5b: Cross compile your Project (Qt) If you have a Qt application, all you have to do is: i686-pc-mingw32-qmake make If you are using Qt plugins such as database drivers or graphics plugins, you should also have a look at the Qt documentation about static plugins. Step 5c: Cross compile your Project (Makefile) If you have a handwritten Makefile, you probably will have to make a few adjustments to it: CC=$(CROSS)gcc LD=$(CROSS)ld AR=$(CROSS)ar You may have to add a few others, depending on your project. Then, all you have to do is: make CROSS=i686-pc-mingw32- That's it! Step 5d: Cross compile your Project (OSG) Using static OpenSceneGraph libraries requires a few changes to your source. The graphics subsystem and all plugins required by your application must be referenced explicitly. Use a code block like the following: #ifdef OSG_LIBRARY_STATIC USE_GRAPHICSWINDOW() USE_OSGPLUGIN(<plugin1>) USE_OSGPLUGIN(<plugin2>) ... #endif Look at examples/osgstaticviewer/osgstaticviewer.cpp in the OpenSceneGraph source distribution for an example. This example can be compiled with the following command: i686-pc-mingw32-g++ \ -o osgstaticviewer.exe examples/osgstaticviewer/osgstaticviewer.cpp \ `i686-pc-mingw32-pkg-config --cflags openscenegraph-osgViewer openscenegraph-osgPlugins` \ `i686-pc-mingw32-pkg-config --libs openscenegraph-osgViewer openscenegraph-osgPlugins` The i686-pc-mingw32-pkg-config command from mingw-cross-env will automatically add -DOSG_LIBRARY_STATIC to your compiler flags.

Go back to Richel Bilderbeek's C++ page.

Go back to Richel Bilderbeek's homepage.

(C++) cannot find -lboost_filesystem (from i686-pc-mingw32-qmake)

System specifics

Source code: main.cpp

Process

References