I'm losing hope to finish my work. I did a game with irrlicht on Code Blocks. I linked irrlicht it works but impossible to link irrKlang...
It shows me the same message each time.
x86_64-w64-mingw32-g++.exe -Llib\irrlicht-1.8.3\lib\Win32-gcc -Llib\irrKlang-1.5.0\lib\Win32-gcc -Llib\irrlicht-1.8.3\lib\Win32-gcc -Llib\irrKlang-1.5.0\lib\Win32-gcc -Llib\irrKlang-1.5.0\bin\win32-gcc -o BomberPark.exe .objs\main.o .objs\srcs\AppSetting.o .objs\srcs\Bombs.o .objs\srcs\Camera.o
.objs\srcs\Sound.o:Sound.cpp:(.text+0x24): undefined reference to irrklang::createIrrKlangDevice(irrklang::E_SOUND_OUTPUT_DRIVER, int, char const*, char const*)'
collect2.exe: error: ld returned 1 exit status
I did these things: I added the libirrklang.a in link librairies and add the directory of the includes in compiler + added the lib directory in linker so I wanted to know what else can I do to resolve my problem please?
The screenshots of my configuration for the linker:
conf1
conf3
Related
(FYI Yes I do know that a similar question exists, But I have already tried all the answers.)
I'm trying to setup SDL2 with MinGW and I have everything set up beside one thing. Whenever I try to compile G++ gives no errors but then LD gives me a: undefined reference to SDL_Init Error.
c:/mingw/bin/../lib/gcc/mingw32/9.2.0/../../../../mingw32/bin/ld.exe: C:\Users\user\AppData\Local\Temp\cc28dE2R.o: in function `SDL_main':
C:\Users\user\Documents\SDL2/src/main.cpp:11: undefined reference to `SDL_Init'
c:/mingw/bin/../lib/gcc/mingw32/9.2.0/../../../../mingw32/bin/ld.exe: C:\Users\user\Documents\SDL2/src/main.cpp:14: undefined reference to `SDL_GetError'
c:/mingw/bin/../lib/gcc/mingw32/9.2.0/../../../../mingw32/bin/ld.exe: C:\Users\user\Documents\SDL2/src/main.cpp:18: undefined reference to `IMG_Init'
c:/mingw/bin/../lib/gcc/mingw32/9.2.0/../../../../mingw32/bin/ld.exe: C:\Users\user\Documents\SDL2/src/main.cpp:20: undefined reference to `SDL_GetError'
c:/mingw/bin/../lib/gcc/mingw32/9.2.0/../../../../mingw32/bin/ld.exe: c:/mingw/bin/../lib/gcc/mingw32/9.2.0/../../../libmingw32.a(main.o):(.text.startup+0xc0): undefined reference to `WinMain#16'
collect2.exe: error: ld returned 1 exit status
The terminal process "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe -Command C:\MinGW\bin\g++.exe -g src\*.cpp -o build\game.exe -ID:C:\MinGW\include -LD:C:\MinGW\lib -mwindows -lmingw32 -lSDL2main -lSDL2_image -lSDL2" terminated with exit code: 1.
I have tried to move the args around. doing -mwindows, adding -lmingw32. I still keep getting the same errors.. I was able to fix the WinMain Error.. But everything else I couldn't fix.
The command I'm Running to compile:
C:\MinGW\bin\g++.exe -g src\*.cpp -o build\game.exe -ID:C:\MinGW\include -LD:C:\MinGW\lib -mwindows -lSDL2main -lSDL2_image -lSDL2
If i could get any help that would be amazing
The common cause of mysterious undefined reference errors on MinGW is using libraries compiled for x64 with an x32 compiler, or vice versa. SDL ships both x32 and x64 ones, try the other ones.
I was able to fix the WinMain Error
Be aware that the intended way of fixing undefined reference to WinMain#16 is not adding #define SDL_MAIN_HANDLED and not doing #undef main. Once you get the right libraries (see the first paragraph), the error should disappear by itself.
Make sure you use int main(int, char**) (and not int main() nor void main()), otherwise it won't work.
-ID:C:\MinGW\include -LD:C:\MinGW\lib
You shouldn't need those flags. Those directories will be searched automatically.
Since you didn't specify any other directories, I assume you placed the SDL files directly into the compiler directories, which isn't a good practice, IMO.
I assume D:C: a typo?
-mwindows
The only purpose of this flag (that I know of) is to prevent your app from automatically opening a terminal window for itself, for release builds.
I have two projects. Project "vDevice" compiles into "libvDevice.so". This library is then used by the other project "videoViewer", which compiles into a binary "app_videoViewer". These were both working fine before I added a call to avdevice_reigster_all() in one of vDevice's files.
vDevice.so compiles and links with no errors. In the makefile I have -L${FFMPEG_PATH} (where all the libav*.a files are located), and -l avformat, avcodec, avutil, asound, avdevice, and bz2 (in that order).
When I try to make videoViewer now, I get this error:
Linking application app_videoViewer ...
/path/to/lib/libvDevice.so: undefined reference to `avdevice_register_all'
collect2: error: ld returned 1 exit status
For videoViewer I added the same things to the makefile, linking to avformat, avcodec, avutil, asound, avdevice, and bz2, all before vDevice... what am I missing?
I have a simple socket program that I'm trying to compile using g++ running in mingw (both the latest versions) on a Win8 system. I'm getting the common linker errors
undefined reference to `__imp_socket'
undefined reference to `__imp_gethostbyname'
I've tried adding -lws2_32 with no luck; i.e. it still can't find the references. Can someone suggest something else I might be missing?
Here's the full output:
G:\source\kak>g++ -o ./test_client -lws2_32 test_client.C
C:\Users\kenkahn\AppData\Local\Temp\ccDZTr9b.o:test_client.C:(.text+0x4f): undefined reference to `__imp_inet_addr'
C:\Users\kenkahn\AppData\Local\Temp\ccDZTr9b.o:test_client.C:(.text+0x6b): undefined reference to `__imp_socket'
C:\Users\kenkahn\AppData\Local\Temp\ccDZTr9b.o:test_client.C:(.text+0x8b): undefined reference to `__imp_connect'
d:/program files/mingw/mingw64/bin/../lib/gcc/x86_64-w64-mingw32/4.8.1/../../../../x86_64-w64-mingw32/bin/ld.exe: C:\Users\kenkahn\AppData\Local\Temp\ccDZTr9b.o: bad reloc address 0xc in section `.xdata'
collect2.exe: error: ld returned 1 exit status
Try putting the -lws2_32 after the test_client.C parameter. The linker of gcc (ld) is touchy about the order of linkable things, this is probably why it doesn't find your imported functions at link time.
everyone
Recently, I'm working on stereo vision. And I download the StereoMatch code from middlebury website: http://vision.middlebury.edu/stereo/code/
I used Ubuntu 11.10 to run this code. After I run this code, I got the following error. There are 3 'undefined reference to ' error. But the code has already included the header file 'MinFilter.h'. And I get confused. Could someone help me? I would appreciate it.
errors:
StcAggregate.o: In function CStereoMatcher::AggrMin()':
StcAggregate.cpp:(.text+0x20f): undefined reference tovoid MinFilter(CImageOf&, CImageOf&, int, int)'
StcEvaluate.o: In function _ZL14PartialShuffle8CImageOfIhERS0_S1_f.constprop.2':
StcEvaluate.cpp:(.text+0x37): undefined reference tovoid MinFilter(CImageOf&, CImageOf&, int, int)'
StcEvaluate.cpp:(.text+0x5b): undefined reference to `void MaxFilter(CImageOf&, CImageOf&, int, int)'
collect2: ld returned 1 exit status
make: * [StereoMatch] Error 1
This is an error from the linker (and/or runtime environment) which cannot find some symbols (i.e. code) which the header files you've included promised to exist. In order for these symbols to be found, you must tell the linker to link against the library (or object file) containing them. This library may have come with the code pre-compiled or may have been made during installation. Have you not got a README file where it is explained how to use (i.e. link and run) the code?
I met exactly the same problem and solved it like this:
Open the Makefile and change the first line from
CPPFLAGS = -O2 -Wall
to
CPPFLAGS = -O -Wall
Then "make clean" and "make", it works for me. So I guess it is because param
"-O2" does more optimization than expected.
I tried to use libgraph library on ubuntu to use "graphics.h" for a sample program .
But while compiling i get these errors :
g++ graph.cpp -o graph -lgraph
/tmp/ccD6rrqg.o: In function `main':
graph.cpp:(.text+0x32): undefined reference to `initgraph'
graph.cpp:(.text+0x37): undefined reference to `cleardevice'
graph.cpp:(.text+0xf8): undefined reference to `grgetch'
graph.cpp:(.text+0xfd): undefined reference to `closegraph'
/tmp/ccD6rrqg.o: In function `bresen(int, int, int, int)':
graph.cpp:(.text+0x1f9): undefined reference to `putpixel'
graph.cpp:(.text+0x206): undefined reference to `delay'
collect2: ld returned 1 exit status
Do I need to add any more linker flags ? This program works on windows so I think the program itself is right .
I managed to get it run but the window crashes giving :
process_responses: Assertion `(((long) (dpy->last_request_read) - (long) (dpy->request)) <= 0)' failed.
also can I resize the window to full screen ?? thankx!
The installation instructions for libgraph seem a bit... casual. Chances are the library should just be explicitly linked in:
g++ graph.cpp -o graph /path/to/libgraph.a
or wherever it was installed.
Another possibility to investigate what library g++ uses:
g++ -print-file-name=graph
though on my system, it just echoes graph.