Problem Compiling Demos on Raspberry Pi

[Andy Fraser]

Followed the instructions here: https://wiki.ugfx.io/index.php/Raspberry_Pi and was able to build and run the basic demo.

However, when I try changing  GFXDEMO to applications/combo, I get the following linker errors.

Quote

Compiling ../resources/ugfx/demos/applications/combo/main.c
Compiling ../resources/ugfx/demos/applications/combo/mandelbrot.c
Compiling ../resources/ugfx/demos/applications/combo/bounce.c
Linking .build/hello-world
/usr/bin/ld: /tmp/cc2ezqga.ltrans0.ltrans.o: in function `setbtntext':
<artificial>:(.text+0x2950): undefined reference to `gdispGetStringWidth'
/usr/bin/ld: /tmp/cc2ezqga.ltrans0.ltrans.o: in function `createWidgets':
<artificial>:(.text+0x2a44): undefined reference to `gwinWidgetClearInit'
/usr/bin/ld: <artificial>:(.text+0x2b18): undefined reference to `gwinGTabsetCreate'
/usr/bin/ld: <artificial>:(.text+0x2b3c): undefined reference to `gwinTabsetAddTab'
/usr/bin/ld: <artificial>:(.text+0x2b60): undefined reference to `gwinTabsetAddTab'
/usr/bin/ld: <artificial>:(.text+0x2b84): undefined reference to `gwinTabsetAddTab'
/usr/bin/ld: <artificial>:(.text+0x2ba8): undefined reference to `gwinTabsetAddTab'
/usr/bin/ld: <artificial>:(.text+0x2bcc): undefined reference to `gwinTabsetAddTab'
/usr/bin/ld: /tmp/cc2ezqga.ltrans0.ltrans.o:<artificial>:(.text+0x2bf0): more undefined references to `gwinTabsetAddTab' follow
/usr/bin/ld: /tmp/cc2ezqga.ltrans0.ltrans.o: in function `createWidgets':
 

If I change to another example such as applications/notepad I get far fewer errors but still linker errors. I can't seem to get any other examples to work either.

Quote

Linker Options........
gcc -pthread -march=armv6zk -mcpu=arm1176jzf-s -mtune=arm1176jzf-s -mfpu=vfp -mfloat-abi=hard -Wl,--gc-sections -lrt -lrt .build/obj/fakefile.o -o .build/hello-world
.
Linking .build/hello-world
/usr/bin/ld: /tmp/cc3jP23j.ltrans0.ltrans.o: in function `drawScreen':
<artificial>:(.text+0x28d8): undefined reference to `gdispOpenFont'
/usr/bin/ld: <artificial>:(.text+0x28e4): undefined reference to `gdispOpenFont'
/usr/bin/ld: <artificial>:(.text+0x2928): undefined reference to `gdispGetStringWidth'
/usr/bin/ld: <artificial>:(.text+0x2964): undefined reference to `gdispGDrawString'
/usr/bin/ld: <artificial>:(.text+0x2a9c): undefined reference to `gdispGFillStringBox'
/usr/bin/ld: <artificial>:(.text+0x2ae4): undefined reference to `gdispGFillStringBox'
/usr/bin/ld: <artificial>:(.text+0x2b2c): undefined reference to `gdispGFillStringBox'
/usr/bin/ld: <artificial>:(.text+0x2b74): undefined reference to `gdispGFillStringBox'
/usr/bin/ld: <artificial>:(.text+0x2bbc): undefined reference to `gdispGFillStringBox'
/usr/bin/ld: <artificial>:(.text+0x2bc4): undefined reference to `gdispCloseFont'
/usr/bin/ld: <artificial>:(.text+0x2bcc): undefined reference to `gdispCloseFont'
/usr/bin/ld: /tmp/cc3jP23j.ltrans0.ltrans.o: in function `main':
<artificial>:(.text+0x2c20): undefined reference to `ginputGetMouse'
/usr/bin/ld: <artificial>:(.text+0x2c30): undefined reference to `ginputGetMouseStatus'
/usr/bin/ld: <artificial>:(.text+0x2f2c): undefined reference to `gdispGFillCircle'
collect2: error: ld returned 1 exit status
make: *** [../resources/ugfx/tools/gmake_scripts/compiler_gcc.mk:304: .build/hello-world] Error 1
 

Can anyone point out what I am doing wrong?

Andy

[Joel Bodenmann]

Hello & welcome to the µGFX community!

Regarding your first compilation output: It seems like the corresponding features are not enabled in the configuration file (gfxconf.h). Most notably it seems like GDISP_NEED_TEXT and GWIN_NEED_TABSET.
Did you use the configuration file that ships with the demo? If they are not enabled in there we certainly need to update that demo.

The same seems to be the case with your second compilation output. It seems like some features such as text, circles and GINPUT are not enabled.

Useful resources:

• Example configuration file: https://git.ugfx.io/uGFX/ugfx/src/branch/master/gfxconf.example.h
• Wiki article: https://wiki.ugfx.io/index.php/Configuration

[Andy Fraser]

Joel,

Thanks for the help - rookie mistake, I modified the gfxcong.example.h but forgot to rename it 🙄

Still got a few compiler issues but will dig a little deeper to see if I can identify the issue.

Best Regards

Andy

[Joel Bodenmann]

Glad to hear that you're making progress

Feel free to ask if you have any more questions. We're happy to help wherever we can!