undefined reference error

[Frosty Chao]

Hmm, I don't speak french, but I hope someone might help me.
I installed µLibrary, and I'm using VC++2008 Express. I already use PALib, and it's working nicely.
But I can't get µLibrary to work... Also tried copying manually the files.

I always get this error message when I build my project.


1>------ Build started: Project: Learning10, Configuration: Release Win32 ------
1>Performing Makefile project actions
1>main.cpp
1>Linking...
1>main.o: In function `main':
1>c:/DSProg/DSProjects/Learning10/Learning10/source/main.cpp(13): undefined reference to `ulInit'
1>c:/DSProg/DSProjects/Learning10/Learning10/source/main.cpp(15): undefined reference to `ulInitGfx'
1>c:/DSProg/DSProjects/Learning10/Learning10/source/main.cpp(17): undefined reference to `ulInitText'
1>main.o: In function `ulShowSplashScreen':
1>c:/DSProg/devkitPro/libnds/include/ulib/ulib.h(130): undefined reference to `ulShowSplashScreen1'
1>c:/DSProg/devkitPro/libnds/include/ulib/ulib.h(132): undefined reference to `ulShowSplashScreen2'
1>main.o: In function `main':
1>c:/DSProg/DSProjects/Learning10/Learning10/source/main.cpp(26): undefined reference to `ulStartDrawing2D'
1>c:/DSProg/DSProjects/Learning10/Learning10/source/main.cpp(29): undefined reference to `ulDrawString'
1>c:/DSProg/DSProjects/Learning10/Learning10/source/main.cpp(32): undefined reference to `ulEndDrawing'
1>c:/DSProg/DSProjects/Learning10/Learning10/source/main.cpp(35): undefined reference to `ulSyncFrame'
1>collect2: ld returned 1 exit status
1>make[1]: *** [/c/DSProg/DSProjects/Learning10/Learning10/Release/Learning10.elf] Error 1
1>make: *** [build] Error 2
1>Build log was saved at "file://c:\DSProg\DSProjects\Learning10\Learning10\Release \BuildLog.htm"
1>Learning10 - 0 error(s), 0 warning(s)
========== Build: 1 succeeded, 0 failed, 0 up-to-date, 0 skipped ==========


Thanks in Advance...

Frosty Chao

[Brunni]

These messages indicate that after linking none of these functions were found. These functions are µLibrary's, so the cause is that you've missed to link to this library. Read the makefile carefully, you should have a section like LDFLAGS with -lpa9, -lnds, etc. and you have to include -lul, -lpng, -lz and so on (all the libraries you want to link with, you may need others).

[Frosty Chao]

hmm thanks for the reply ^^ I'm still new to this stuff.. so

PATH := $(DEVKITARM)/bin:$(PATH)
SUBDIRS:= `ls | egrep -v '^(CVS|tools)$$'`

################################################## ####################

all:
make -C lib/arm7
make -C lib/arm9

################################################## ####################

clean:
make clean -C lib/arm7
make clean -C lib/arm9

################################################## ####################

archive:
$(DEVKITPRO)/devkitARM/arm-eabi/bin/ar -cr lib/libpa7.a lib/arm7/build/ModFile.o lib/arm7/build/PA.o lib/arm7/build/Sound7.o
$(DEVKITPRO)/devkitARM/arm-eabi/bin/ar -cr lib/libpa9.a lib/arm9/build/gba-jpeg-decode.o lib/arm9/build/PA.o lib/arm9/build/PA_Draw.o lib/arm9/build/PA_Draw8bit.o lib/arm9/build/PA_Draw8bitEx.o lib/arm9/build/PA_Draw16bit.o lib/arm9/build/PA_Draw16bitEx.o lib/arm9/build/PA_Keys.o lib/arm9/build/PA_IO.o lib/arm9/build/PA_Math.o lib/arm9/build/PA_Reco.o lib/arm9/build/PA_Sprite.o lib/arm9/build/PA_BgTiles.o lib/arm9/build/PA_BgGetPixel.o lib/arm9/build/PA_BgLargeMap.o lib/arm9/build/PA_Mode7.o lib/arm9/build/PA_Text.o lib/arm9/build/PA_TextSpecial.o lib/arm9/build/PA_TextPrint.o lib/arm9/build/PA_Text8bit.o lib/arm9/build/PA_Interrupt.o lib/arm9/build/PA_Palette.o lib/arm9/build/PA_PaletteEx.o lib/arm9/build/Sound9.o lib/arm9/build/PA_16c.o lib/arm9/build/PA_API.o lib/arm9/build/PA_GBFS.o lib/arm9/build/PA_Gif.o lib/arm9/build/PA_GifToTex.o lib/arm9/build/PA_GifToTiles.o lib/arm9/build/keyboard.raw.o lib/arm9/build/keyboard.map.o lib/arm9/build/keyboard.pal.o lib/arm9/build/PA_Keyboard.o lib/arm9/build/PA_IA.o lib/arm9/build/PA_IA.o lib/arm9/build/PA_FS.o lib/arm9/build/PA_Video.o lib/arm9/build/PA_Sound.o lib/arm9/build/PA_SoundEx.o lib/arm9/build/PA_Motion.o lib/arm9/build/PA_Timer.o lib/arm9/build/PA_Wifi.o lib/arm9/build/PA_LeaderBoard.o lib/arm9/build/PA_SplashEyes.o lib/arm9/build/PA_SplashBlue.o lib/arm9/build/PA_BgTrans.o lib/arm9/build/PA_3D.o lib/arm9/build/PA_3DSprites.o lib/arm9/build/PA_Stuff.o lib/arm9/build/PA_RTC.o lib/arm9/build/PA_2D.o lib/arm9/build/PA_SpriteStylus.o lib/arm9/build/PA_Inits.o lib/arm9/build/dgif_lib.o lib/arm9/build/gif_err.o lib/arm9/build/gif_font.o lib/arm9/build/gifalloc.o lib/arm9/build/quantize.o

heres's my makefile

where should I change?

[Brunni]

It's not the right makefile, look at the makefile for your ARM9 binary.

[Frosty Chao]

oh sorry >< I sent the wrong file...

Is this the correct one?

EDIT: I did what you said, but got another error message (at least it's shorter):

1>------ Build started: Project: Learning10, Configuration: Release Win32 ------
1>Performing Makefile project actions
1>logo.bmp
1>logo_wifi.bmp
1>main.cpp
1>arm-eabi-g++ -g -mthumb-interwork -mno -fpu -lul -lpng -lz -L/c/DSProg/devkitPro/PAlib/lib -specs=ds_arm9.specs logo.o logo_wifi.o main.o -L/c/DSProg/devkitPro/libnds/lib -lul -lpa9 -lpng -lz -lfat -lnds9 -o build.elf
1>c:/DSProg/devkitPro/libnds/lib\libul.a(drawing.o): In function `glInit':
1>c:/devkitpro/libnds/include/nds/arm9/videoGL.h(1089): undefined reference to `glGetGlobals'
1>c:/devkitpro/libnds/include/nds/arm9/videoGL.h(1090): undefined reference to `glInit_C'
1>collect2: ld returned 1 exit status
1>make[1]: *** [/c/DSProg/DSProjects/Learning10/Learning10/Learning10.elf] Error 1
1>make: *** [build] Error 2
1>Build log was saved at "file://c:\DSProg\DSProjects\Learning10\Learning10\Release \BuildLog.htm"
1>Learning10 - 0 error(s), 0 warning(s)
========== Build: 1 succeeded, 0 failed, 0 up-to-date, 0 skipped ==========

[Brunni]

You probably have a too old version of the devkitpro. Try to download the latest one.

[Frosty Chao]

I'm using R20, which is required by PALib, since R21 doesn't work. Isn't there another way to solve the problem?

And sorry for taking your time

Thanks in Advance

Frosty Chao

[Roly]

I have the exact problem. Except I don't use Visual Studio.

[Brunni]

I'll see with the latest release when i've got some time... maybe they changed something in libnds as usual.

[skyclad monkey]

I have this exact same problem as well. Any solutions anyone?
I am also using R20 as PALib requires it. Which version works with µLibrary?

[ys_]

I had the same problem. I could solve it just by changing

-lul -lpa9

to

-lpa9 -lul

in the Makefile.

[skyclad monkey]

Im not actually using PALib, I am only using ulibrary.
I cant even compile the examples without this error occuring.

[ys_]

Then use devkitarm r21, update libnds to 20071023 and PAlib with the community update 080203. It should work.