Can't compile uGFX for framebuffer Linux

[dossakab]

Hello everybody. I'm trying to build uFGX for ARM device. I have 2 folders - hello_world(my project) with this simple makefile: 

# Possible Targets:	all clean Debug cleanDebug Release cleanRelease

##############################################################################################
# Settings
#

# General settings
	# See $(GFXLIB)/tools/gmake_scripts/readme.txt for the list of variables
	OPT_OS					= linux
	OPT_LINK_OPTIMIZE		= yes
	# Change this next setting (or add the explicit compiler flags) if you are not compiling for x86 linux
	OPT_CPU					= armv6

# uGFX settings
	# See $(GFXLIB)/tools/gmake_scripts/library_ugfx.mk for the list of variables
	GFXLIB					= ~/Documents/projects/resources/ugfx
	GFXBOARD				= Linux-Framebuffer
	GFXDEMO					= applications/mandelbrot

# Linux settings
	# See $(GFXLIB)/tools/gmake_scripts/os_linux.mk for the list of variables

##############################################################################################
# Set these for your project
#
ARCH     = arm-linux-gnueabi-
SRCFLAGS = 
CFLAGS   =
CXXFLAGS =
ASFLAGS  =
LDFLAGS  =

SRC      =
OBJS     =
DEFS     =
LIBS     =
INCPATH  =
LIBPATH  =

##############################################################################################
# These should be at the end
#

include $(GFXLIB)/tools/gmake_scripts/library_ugfx.mk
include $(GFXLIB)/tools/gmake_scripts/os_$(OPT_OS).mk
include $(GFXLIB)/tools/gmake_scripts/compiler_gcc.mk
# *** EOF ***

and resources/ugfx(source codes of ugfx). When I've started building, I've got this message(in the attachments). So what is it? Where this file needs to be?

 

[Joel Bodenmann]

Hello @dossakab and welcome to the µGFX community!

Can you please try setting the path pointing to the µGFX library in your Makefile (the value of GFXLIB) to a path that doesn't contain ~ in it? You can either use relative or absolute paths.

[dossakab]

@Joel Bodenmann, thank you! That works. But I still have an error: 
 

[Joel Bodenmann]

Can you please attach the entire build log as a text file to your post? Screenshots are very cumbersome for us to work with (and unnecessarily large files).

Also, don't forget to make a clean build.

[dossakab]

Sure. This is the log from terminal

log

[dossakab]

Strange thing, I've just re-downloaded source and it have compiled successfully! Thank you!

[Joel Bodenmann]

Glad to hear that you got it working!

[dossakab]

Ohh, I wrote it too early) When I've tried launch this app on device, I've receive this message:
 

# ./hello_world
./hello_world: /lib/libc.so.6: version `GLIBC_2.17' not found (required by ./hello_world)

Where is the problem - at the host, or at the device?

[inmarket]

That message means that the version of the c library on your development machine is not available on your target machine.

Make sure glibc v2.17 is available on your target machine or instead compile for the older version of c library available on your target.

Unfortunately i can't give you more explicit instructions than that. There are plenty of linux forums where you can ask those questions, or maybe another user here can help.

[dossakab]

Thanks!

[Tomasz]

Hi All,

Maybe I should start the new topic but ma setup is very similar and I have a building problem as well.

I'm trying to make the first step and familiarize myself with uGFX but I can't build the basics demo without errors. My Host OS is Ubuntu 16.4 and target is OPOS6UL board (ARM Cortex-A9). Please find attached building log and makefile. Would be great if somebody could help me in this case so I can make a progress.

Thanks in advance,

 

building log.odt

Makefile

[dossakab]

I fixed this with simple rebuild.... Try make clean, maybe it will help

Edited February 24, 2017 by dossakab

[inmarket]

It looks like a problem with your cross compiler. The compiled code seems to be using a different c calling convention to the c library.

Run some test cross compiles with simple hello world programs first to make sure your cross compiler is working. Also try it using the same compiler flags uGFX uses (that's why each uGFX compile prints the options first).

You can also try compiling uGFX for your host machine. That will at least demonstrate that uGFX works.

Note it is very important to do a "make clean" between each change in platform or options.

[Joel Bodenmann]

This appears to be related to a miss match of the floating point flags.