braga Vittorio.Braga@roma2.infn.it writes:
Try rerunning nettle's ./configure as
./configure LDFLAGS="-L/usr/local/lib -Wl,rpath,/usr/local/lib"
zaamus@zaamuspc:~/Dependencies/nettle-2.7.1$ ./configure LDFLAGS="-L/usr/local/lib -Wl,rpath,/usr/local/lib" checking build system type... i686-pc-linux-gnu checking host system type... i686-pc-linux-gnu checking for -R flag... using -Wl,-rpath, Searching for libraries checking /usr/local/lib/lib... not found checking /usr/local/lib... added checking /sw/local/lib... not found checking /sw/lib... not found checking /usr/gnu/lib... not found checking /opt/gnu/lib... not found checking /sw/gnu/lib... not found checking /usr/freeware/lib... not found checking /usr/pkg/lib... not found checking for gcc... gcc checking whether the C compiler works... no configure: error: in `/home/zaamus/Dependencies/nettle-2.7.1': configure: error: C compiler cannot create executables See `config.log' for more details
Ok, then the flags I gave you aren't quite right. You have to follow the suggestion to look in config.log to see what went wrong. But I think I made a typo, it should probably be "-rpath", not "rpath".
If this is confusing, you may also want to read up on how the runtime linker locates libraries.
Or as a quick test to see if this really is the problem, try setting LD_LIBRARY_PATH, and run
LD_LIBRARY_PATH=.lib:/usr/local/lib ldd testsuite/ecc-mul-g-test LD_LIBRARY_PATH=.lib:/usr/local/lib ./testsuite/ecc-mul-g-test
zaamus@zaamuspc:~/Dependencies/nettle-2.7.1$ LD_LIBRARY_PATH=.lib:/usr/local/lib ldd testsuite/ecc-mul-g-test linux-gate.so.1 => (0x40022000) libhogweed.so.2 => .lib/libhogweed.so.2 (0x40026000) libnettle.so.4 => .lib/libnettle.so.4 (0x40054000) libgmp.so.10 => /usr/local/lib/libgmp.so.10 (0x40087000) libc.so.6 => /lib/i386-linux-gnu/libc.so.6 (0x40119000) /lib/ld-linux.so.2 (0x40000000) zaamus@zaamuspc:~/Dependencies/nettle-2.7.1$ LD_LIBRARY_PATH=.lib:/usr/local/lib ./testsuite/ecc-mul-g-test zaamus@zaamuspc:~/Dependencies/nettle-2.7.1$
This indicates that your nettle build works fine, if you only get it to link with the right libgmp.so file at runtime (/usr/local/lib/libgmp.so.10 above).
Regards, /Niels