Guillaume Rousse wrote: > I recently get surprised by different behaviour of AC_CHECK_LIB on > x86_64 and i586 mandriva machines. It seems than on the first one, > /usr/local/lib is also part of the default search path. I read ld > documentation, but I couldn't find any way to explicitely check my > assumption. So, is there any way to display linker default library > search path ? Usually the compiled in default path is /lib and /usr/lib. The man page for ld.so should document this. man ld.so I would peek in the binary and check that those paths are also in the binary too. (/lib/ld-linux.so.2 on i686 systems.) strings /lib/ld-linux-x86-64.so.2 | grep /lib/ /lib/ /usr/lib/ Additionally /etc/ld.so.conf instructs ldconfig what paths to put in /etc/ld.so.cache which is used by the ld.so. man ldconfig In summary it is /lib:/usr/lib plus the contents of /etc/ld.so.conf plus the setting of LD_LIBRARY_PATH. I am not sure where this is documented but the LD_DEBUG variable may be set to trace interesting information about the actions of the dynamic loader. LD_DEBUG=help /lib/ld-linux-x86-64.so.2 ... libs display library search paths ... Which means you can display the search path for your program by setting that variable for the command run and tracing the output. LD_DEBUG=libs cat /dev/null Hope that helps, Bob _______________________________________________ Autoconf mailing list Autoconf@xxxxxxx http://lists.gnu.org/mailman/listinfo/autoconf
