2010-11-26 10:03:49 build fails at libpng (SVN Revision 9986)

Adrian Trüb (SWITZERLAND)

Message: 96242

libtool: link: bfin-uclinux-gcc -I/home/scbf/temp/uclinux/staging/usr/include/libpng12 -pipe -Wall -g -O2 -mcpu=bf548-0.2 -D_GNU_SOURCE=1 -D_REENTRANT -I/home/scbf/temp/uclinux/staging/usr/include/SDL -Wl,-elf2flt -mcpu=bf548-0.2 -o showimage showimage.o -Wl,-rpath -Wl,/usr/lib ./.libs/libSDL_image.a -lpng -lz -ljpeg -lSDL -lpthread

/home/scbf/temp/uclinux/staging/usr/lib/libpng.a(libpng12_la-pngrtran.o): In function `png_build_gamma_table':

/home/scbf/temp/uclinux/lib/libmakepng/libpng-1.2.42/pngrtran.c:4183: undefined reference to `_pow'

/home/scbf/temp/uclinux/lib/libpng/libpng-1.2.42/pngrtran.c:4290: undefined reference to `_pow'

/home/scbf/temp/uclinux/lib/libpng/libpng-1.2.42/pngrtran.c:4344: undefined reference to `_pow'

/home/scbf/temp/uclinux/lib/libpng/libpng-1.2.42/pngrtran.c:4318: undefined reference to `_pow'

/home/scbf/temp/uclinux/staging/usr/lib/libpng.a(libpng12_la-pngrtran.o):/home/scbf/temp/uclinux/lib/libpng/libpng-1.2.42/pngrtran.c:4369: more undefined references to `_pow' follow

collect2: ld returned 1 exit status

make[4]: *** [showimage] Error 1

make[4]: Leaving directory `/home/scbf/temp/uclinux/lib/SDL_image/build-SDL_image-1.2.10'

make[3]: *** [all] Error 2

make[3]: Leaving directory `/home/scbf/temp/uclinux/lib/SDL_image'

make[2]: *** [SDL_image] Error 2

make[2]: Leaving directory `/home/scbf/temp/uclinux/lib'

make[1]: *** [all] Error 2

make[1]: Leaving directory `/home/scbf/temp/uclinux/lib'

make: *** [subdirs] Error 1

What is the problem?

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2010-11-26 17:27:23 Re: build fails at libpng (SVN Revision 9986)

Mike Frysinger (UNITED STATES)

Message: 96245

builds fine for me. the libpng.pc file should have added -lm to the linking steps which SDL_image should have added.

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2010-11-29 09:30:36 Re: build fails at libpng (SVN Revision 9986)

Adrian Trüb (SWITZERLAND)

Message: 96288

Ok, and where do I have to add the -lm?

Shoulden't it work if i just download the svn dist and build it, without changing any config or makefiles?

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2010-11-29 12:55:06 Re: build fails at libpng (SVN Revision 9986)

Adrian Trüb (SWITZERLAND)

Message: 96291

I tried the newest toolchain(2010R1-RC4) and the newest uclinux-dist(2010R1-RC4) and there's still the same problem. Now I think it's a problem on my host pc. I use ubuntu 10.10, could it be that there are problems with the math library?

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2010-11-29 15:26:03 Re: build fails at libpng (SVN Revision 9986)

Mike Frysinger (UNITED STATES)

Message: 96293

it works fine for me without changes. that is why i suggested places for you to look to verify things and narrow down where it's going wrong.

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2010-12-03 11:25:01 Re: build fails at libpng (SVN Revision 9986)

Adrian Trüb (SWITZERLAND)

Message: 96457

Now I can build the uImage with the default settings.

But if I select the SDL_image Lib, there is still undefined reference to _pow. (In Ubuntu and Suse)

Any idea?