Why are my G++ shared libraries incompatible after switching to Opensuse 12.3?

[PPeter]

Before I switched to Opensuse 12.3, I was running Arch, and doing something like:

g++ -o test -I ./include/ -L ./lib/ -ltcod -ltcodxx ./src/main.cpp

with no problems occurring.

Now, when I try to do that (with everything kept the exact same as when on Arch), I get:

/usr/lib64/gcc/x86_64-suse-linux/4.7/../../../../x86_64-suse-linux/bin/ld: skipping incompatible lib/libtcod.so when searching for -ltcod
/usr/lib64/gcc/x86_64-suse-linux/4.7/../../../../x86_64-suse-linux/bin/ld: cannot find -ltcod
/usr/lib64/gcc/x86_64-suse-linux/4.7/../../../../x86_64-suse-linux/bin/ld: skipping incompatible lib/libtcodxx.so when searching for -ltcodxx
/usr/lib64/gcc/x86_64-suse-linux/4.7/../../../../x86_64-suse-linux/bin/ld: cannot find -ltcodxx

I also tried including -Wl,-rpath=./lib/ , but it still made no difference.

Any help as to why the libraries have become incompatible all of a sudden would be greatly appreciated.

 

[jedishrfu]

Do you have LD_LIBRARY_PATH defined in your environment? I think it needs to point to what directories have the shared libraries.

http://stackoverflow.com/questions/...ce-between-ld-library-path-and-l-at-link-time

You also have an issue with compiling in one mode ie 32bit and referencing libs for 64bit mode both need to be the same mode.

 

[gsal]

Also, is there the possibility of an issue of static vs dynamic libraries? I seem to remember a problem along those lines when. at the office, I got switched from Red Hat 4 to Red Hat 5.

 

[jedishrfu]

Also, is there the possibility of an issue of static vs dynamic libraries? I seem to remember a problem along those lines when. at the office, I got switched from Red Hat 4 to Red Hat 5.

shared libraries are dynamic right?

http://www.yolinux.com/TUTORIALS/LibraryArchives-StaticAndDynamic.html

 

[gsal]

I guess.

By the way, the error message posted does not quite say that the library was not found, it says that what was found is not compatible...whatever that means...different compiler? different size (32 vs 64)? different something? Sorry, I am no expert on these matters.

 

[harborsparrow]

The term "shared libraries" may refer to libraries that are either static OR dynamic. Static libraries are compiled right into your executable, whereas dynamic libraries are linked at runtime.