Is there any special magic to get source line numbers in gdb (bt or bt full) ? I tried : CFLAGS="-g -g3 -ggdb -ggdb3" --enable-slapd --enable-shared --enable-overlays --disable-ipv6 --with-threads --enable-ssl --enable-collect --enable-debug The CFLAGS added the gdb options when compiling, but did not provide any line numbers for openldap source when doing backtraces under gdb.. Cheers Brett