Re: Issue: TORCS won't link libpng on Ubuntu 13.10

Toms Lēšmanis <lithe08 <at> inbox.lv> writes:

> 
> 
> Hi,1. "nm /usr/lib/x86_64-linux-gnu/libpng.a | grep create_info_struct" on 
./lib/x86_64-linux-gnu/libpng.a gives:
>   00000000000002e0 T png_create_info_structSo it's defined there.2. locate 
libpng* gives:/lib/i386-linux-gnu/libpng12.so.0/lib/i386-linux-
gnu/libpng12.so.0.49.0/lib/x86_64-linux-gnu/libpng12.so.0/lib/x86_64-linux-
gnu/libpng12.so.0.49.0/usr/lib/x86_64-linux-gnu/libpng.a/usr/lib/x86_64-
linux-gnu/libpng.so/usr/lib/x86_64-linux-gnu/libpng12.a/usr/lib/x86_64-
linux-gnu/libpng12.so/usr/lib/x86_64-linux-gnu/libpng12.so.0the file command 
gives:/lib/x86_64-linux-gnu/libpng12.so.0: symbolic link to 
`libpng12.so.0.49.0'/lib/x86_64-linux-gnu/libpng12.so.0.49.0: ELF 64-bit LSB 
shared object, x86-64, version 1 (SYSV), dynamically linked, 
BuildID[sha1]=0x01b6604fb7db9154179ae8f67378fe56b0791a3f, 
stripped/usr/lib/x86_64-linux-gnu/libpng.so: symbolic link to 
`libpng12.so'/usr/lib/x86_64-linux-gnu/libpng12.so: symbolic link to 
`libpng12.so.0'/usr/lib/x86_64-linux-gnu/libpng12.so.0: symbolic link to 
`/lib/x86_64-linux-gnu/libpng12.so.0'So it all comes down to this one file 
/lib/x86_64-linux-gnu/libpng12.so.0.49.0And all the files have the 
"png_create_info_struct"Does this give you anything?Thanks,ReinisQuoting 
Bernhard Wymann <berniw <at> bluewin.ch> : Hi Tom This looks good: > When I 
do "nm -D ./lib/x86_64-linux-gnu/libpng12.so | grep > create_info_struct", I 
get: > 0000000000003e80 T png_create_info_struct > So it's defined there. > 
COMPILER_PATH=/usr/lib/gcc/x86_64-linux-gnu/4.8/:/usr/lib/gcc/x86_64-linux-
gnu/4.8/:/usr/lib/gcc/x86_64-linux-gnu/:/usr/lib/gcc/x86_64-linux-
gnu/4.8/:/usr/lib/gcc/x86_64-linux-gnu/ > LIBRARY_PATH=/usr/lib/gcc/x86_64-
linux-gnu/4.8/:/usr/lib/gcc/x86_64-linux-gnu/4.8/../../../x86_64-linux-
gnu/:/usr/lib/gcc/x86_64-linux-gnu/4.8/../../../../lib/:/lib/x86_64-linux-
gnu/:/lib/../lib/:/usr/lib/x86_64-linux-
gnu/:/usr/lib/../lib/:/usr/lib/gcc/x86_64-linux-
gnu/4.8/../../../:/lib/:/usr/lib/ But this is suspect: 1. ./lib/x86_64-
linux-gnu/libpng.a I do not have this on my system, what does nm on this 
file say (without the "-D" option this time, because it is a static 
library), maybe it tries to link with the static version (your output does 
not indicate this, but check it anyway). > P.S. when I do "ldd png_test" [my 
sample program], I get the following: > linux-vdso.so.1 => 
(0x00007fff2bbc0000) > libpng12.so.0 => /lib/x86_64-linux-gnu/libpng12.so.0 
> (0x00007f651a44f000) > libc.so.6 => /lib/x86_64-linux-gnu/libc.so.6 
(0x00007f651a087000) > libz.so.1 => /usr/local/lib/libz.so.1 
(0x00007f6519e6a000) > libm.so.6 => /lib/x86_64-linux-gnu/libm.so.6 
(0x00007f6519b66000) > /lib64/ld-linux-x86-64.so.2 (0x00007f651a68e000) 2. 
The libpng here seems to be in /lib/..., where the former one was in 
/usr/lib, could you check if this is the same file (symbolic/hard link?) 
Does the file in lib has the symbol as well (check this as well with nm)? 
Which packages do these files belong to, are these in the same one? Kind 
regards Bernhard
>   
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Hello,
I had the same problem, but I renamed /lib/x86_64-linux-gnu/libpng12.so.0 
and /lib/x86_64-linux-gnu/libpng12.so.0.49.0 to *.bak and make works fine!




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