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Help => General => Topic started by: thecheeselover on January 05, 2015, 12:58:06 am

Title: [Answered] Building "undefined references": SFML 2.2 32 bit MinGW gcc 4.7.1
Post by: thecheeselover on January 05, 2015, 12:58:06 am

I have followed the newest SFML 2.2 tutorial to build/compile SFML and link it to my project(s). So I built SFML 2.2 in debug and release mode for MinGW 32 bit (gcc 4.7.1) and it worked just fine as my 64 bit release builds (MinGW 64 gcc 4.9.0, TDM 64 gcc 4.8.1 and TDM 64 gcc 4.9.2). The .a files seemed to work just fine until I tried the simple example for drawing a green circle. I have no bugs in 64 bit with either of my compilers but when I'm in 32 bit with MinGW gcc 4.7.1, I get "undefined references at every line".

Here's my build log:

(click to show/hide)

g++.exe -Wall -fexceptions -static-libgcc -opt-static -DSFML_STATIC -DGLEW_STATIC -DGLM_FORCE_RADIANS -DDGLEW_STATIC -g -DDEBUG -DBITS_32 -std=c++11 -I"D:\CodeBlocks Workspace\Do not touch\Librairies\SFML 2.2\include" -I"D:\CodeBlocks Workspace\Do not touch\Librairies\SFML 2.2\extlibs\headers" -I"D:\CodeBlocks Workspace\Do not touch\Librairies\SFML 2.2\extlibs\headers\libfreetype\windows" -I"D:\CodeBlocks Workspace\Do not touch\Librairies\SFML 2.2\extlibs\headers\libsndfile\windows" -c "D:\CodeBlocks Workspace\Templates\SFML 2_2 Template\main.cpp" -o obj\Debug\main.o
g++.exe -L"D:\CodeBlocks Workspace\Do not touch\Librairies\SFML 2.2\extlibs\bin\x86" -L"D:\CodeBlocks Workspace\Do not touch\Librairies\SFML 2.2\cmake build\Debug\lib\MinGW 32" -L"D:\CodeBlocks Workspace\Do not touch\Librairies\SFML 2.2\extlibs\libs-mingw\x86" -o "bin\Debug\SFML 2_2 Template.exe" obj\Debug\main.o   -lsfml-graphics-s-d -lsfml-window-s-d -lsfml-network-s-d -lsfml-audio-s-d -lsfml-system-s-d -lglew -lws2_32 -lopenal32 -lsndfile -lgdi32 -lwinmm -lfreetype -ljpeg -lglu32 -lopengl32
obj\Debug\main.o: In function `main':
D:/CodeBlocks Workspace/Templates/SFML 2_2 Template/main.cpp:5: undefined reference to `sf::String::String(char const*, std::locale const&)'
D:/CodeBlocks Workspace/Templates/SFML 2_2 Template/main.cpp:5: undefined reference to `sf::VideoMode::VideoMode(unsigned int, unsigned int, unsigned int)'
D:/CodeBlocks Workspace/Templates/SFML 2_2 Template/main.cpp:5: undefined reference to `sf::RenderWindow::RenderWindow(sf::VideoMode, sf::String const&, unsigned int, sf::ContextSettings const&)'
D:/CodeBlocks Workspace/Templates/SFML 2_2 Template/main.cpp:6: undefined reference to `sf::CircleShape::CircleShape(float, unsigned int)'
D:/CodeBlocks Workspace/Templates/SFML 2_2 Template/main.cpp:7: undefined reference to `sf::Color::Green'
D:/CodeBlocks Workspace/Templates/SFML 2_2 Template/main.cpp:7: undefined reference to `sf::Shape::setFillColor(sf::Color const&)'
D:/CodeBlocks Workspace/Templates/SFML 2_2 Template/main.cpp:15: undefined reference to `sf::Window::close()'
D:/CodeBlocks Workspace/Templates/SFML 2_2 Template/main.cpp:12: undefined reference to `sf::Window::pollEvent(sf::Event&)'
D:/CodeBlocks Workspace/Templates/SFML 2_2 Template/main.cpp:18: undefined reference to `sf::Color::Color(unsigned char, unsigned char, unsigned char, unsigned char)'
D:/CodeBlocks Workspace/Templates/SFML 2_2 Template/main.cpp:18: undefined reference to `sf::RenderTarget::clear(sf::Color const&)'
D:/CodeBlocks Workspace/Templates/SFML 2_2 Template/main.cpp:19: undefined reference to `sf::RenderStates::Default'
D:/CodeBlocks Workspace/Templates/SFML 2_2 Template/main.cpp:19: undefined reference to `sf::RenderTarget::draw(sf::Drawable const&, sf::RenderStates const&)'
D:/CodeBlocks Workspace/Templates/SFML 2_2 Template/main.cpp:20: undefined reference to `sf::Window::display()'
D:/CodeBlocks Workspace/Templates/SFML 2_2 Template/main.cpp:9: undefined reference to `sf::Window::isOpen() const'
D:/CodeBlocks Workspace/Templates/SFML 2_2 Template/main.cpp:23: undefined reference to `sf::RenderWindow::~RenderWindow()'
D:/CodeBlocks Workspace/Templates/SFML 2_2 Template/main.cpp:23: undefined reference to `sf::RenderWindow::~RenderWindow()'
obj\Debug\main.o: In function `ZN2sf11CircleShapeD1Ev':
D:/CodeBlocks Workspace/Do not touch/Librairies/SFML 2.2/include/SFML/Graphics/CircleShape.hpp:41: undefined reference to `vtable for sf::CircleShape'
D:/CodeBlocks Workspace/Do not touch/Librairies/SFML 2.2/include/SFML/Graphics/CircleShape.hpp:41: undefined reference to `vtable for sf::CircleShape'
D:/CodeBlocks Workspace/Do not touch/Librairies/SFML 2.2/include/SFML/Graphics/CircleShape.hpp:41: undefined reference to `sf::Shape::~Shape()'

How my linking process work is that I link every optional libraries at the end of each build target, except for glew  because in 64 bit its name is glew32 (wtf Microsoft...). Then, in each build target, I add the respective link to each sfml libraries. For example, if it's a debug target, then I add -d but they all have -s. Also, depending on the architecture, I give the search directories for the linker:

32 bit

• extlibs\bin\x86
• cmake build\Debug\lib\MinGW 32 (SFML 2.2 source I built myself)
• extlibs\libs-mingw\x86

64 bit

• extlibs\bin\x64
• cmake build\Release\lib\MinGW 64 (SFML 2.2 source I built myself, MinGW 64 is an example)
• extlibs\libs-mingw\x64

TL;DR
64 bit works fine, 32 bit doesn't work. The only differences are glew and searching directories. Everything except the external libraries is compiled by myself.

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Title: Re: Building "undefined references": SFML 2.2 32 bit MinGW gcc 4.7.1
Post by: eXpl0it3r on January 05, 2015, 01:28:33 am

It seems to work fine on my end.

Are you absolutely certain that you're using the right libraries and Code::Blocks doesn't suddenly find other SFML libraries?
If you build SFML with SFML_USE_STATIC_STD_LIBS and a TDM compiler, you don't have to add -static-libgcc to the compiler flags. If you haven't checked that CMake option, you have to provide -shared-ligcc and -shared-libstdc++.
You can also remove your -DDGLEW_STATIC flag.
If you check SFML_BUILD_EXAMPLES when building SFML, do you get errors? If not, then it has to be an issue in your settings.
And last but not least, if you build the install target for static SFML, SFML's dependencies will get automatically copied to the lib and include directories, so you don't have to add the paths to the extlibs dir.

Title: Re: Building "undefined references": SFML 2.2 32 bit MinGW gcc 4.7.1
Post by: thecheeselover on January 05, 2015, 02:00:53 am

Quote

If you check SFML_BUILD_EXAMPLES when building SFML, do you get errors?

Nope, because I checked SFML_BUILD_DOC, SFML_BUILD_EXAMPLES and SFML_USE_STATIC_STD_LIBS. I remember that checking BUILD_SHARED_LIBS and SFML_USE_STATIC_STD_LIBS at the same times provoked errors, so I uncheked BUILD_SHARED_LIBS. Anyway, I don't want any dll; I just want static librairies.

Quote

Are you absolutely certain that you're using the right libraries and Code::Blocks doesn't suddenly find other SFML libraries?

Actually, I'm unsure. All the paths I use point to the new SFML 2.2, but is there a way they could point to an old SFML? :O For example, if SFML is in the PATH?

EDIT: I tried sfml-graphics-s-d and everything with absolute paths but nothing changes.

Quote

And last but not least, if you build the install target for static SFML, SFML's dependencies will get automatically copied to the lib and include directories, so you don't have to add the paths to the extlibs dir.

Hmmm it doesn't do that for me...

Title: Re: Building "undefined references": SFML 2.2 32 bit MinGW gcc 4.7.1
Post by: thecheeselover on January 05, 2015, 10:10:27 pm

Ok that's was really hard to find but, I guess that after installing multiple compilers, my PATH variable got mixed up. What happened is that CB's MinGW default compiler has been replaced by a TDM compiler. When I was using CMake, I was checking "Use default native compilers" when I should have given the old MinGW's g++ and gcc path. Now it works! :)