On 27 Mar 2008, at 20:07, Rod Evans wrote: > Mark Phalan wrote: >> Up until recently when I was debugging something I sometimes liked to >> build debug libraries that I could use with dbx. >> For e.g. when building mech_krb5.so.1 I built like this: >> CTFCONVERT_O="" CTFMERGE_LIB="" COPTFLAG="-g" COPTFLAG64="-g" make >> install >> I'm not sure exactly what the CTF options are doing but I assume that >> they are preventing the removal of debug bits that dbx needs. >> Anyway this stopped working for me recently (I'm on build 84 but >> perhaps >> caused by the direct bindings putback?). When I build with these >> options >> I get plenty of errors: >> Text relocation remains referenced >> against symbol offset in file >> <unknown> 0x4 pics/gssapi_krb5.o >> <unknown> 0xc pics/gssapi_krb5.o >> <unknown> 0x14 pics/gssapi_krb5.o >> <unknown> 0x1c pics/gssapi_krb5.o >> <unknown> 0x24 pics/gssapi_krb5.o >> <unknown> 0x2c pics/gssapi_krb5.o >> oidsets 0x0 pics/gssapi_krb5.o >> oidsets 0x0 pics/gssapi_krb5.o >> oidsets 0x0 pics/gssapi_krb5.o >> ... >> What's the correct way to build debug libraries (with recent builds)? > > I'm not sure I have an answer, but I can replicate the failure > you're seeing, > but don't think it has anything to do with direct bindings. > > The "Text relocation" error messages are telling you that the code > isn't > position independent. These messages are produced by ld(1) when - > ztext > is provided. As far as I can tell, this flag has always been passed > to > this component (it's actually a default that should be passed to all > OSNet > shard object builds). > > Note, even a default build passes in "-g", as debugging information > must > be created for CTF to leverage off of. So, by default you get: > > /ws/onnv-tools/SUNWspro/SS11/bin/cc -O -K pic -xspace -Xa -xildoff \ > ^^ > -errtags=yes -errwarn=%all -erroff=E_EMPTY_TRANSLATION_UNIT \ > -erroff=E_STATEMENT_NOT_REACHED -xc99=%none -W0,-xglobalstatic -g ... > ^^ > > and all is well. But with your options we get: > > /ws/onnv-tools/SUNWspro/SS11/bin/cc -g -K pic -xspace -Xa -xildoff \ > ^^ > -errtags=yes -errwarn=%all -erroff=E_EMPTY_TRANSLATION_UNIT \ > -erroff=E_STATEMENT_NOT_REACHED -xc99=%none -W0,-xglobalstatic - > g ... > ^^ > and the corresponding text relocation errors.
Thanks for the explanation. > > > The difference is the -O is swapped for -g. However, the -K pic > flag is > defined for both, so I don't know why the compiler isn't generating > position independent code. Perhaps a compiler engineer can > enlighten us. > > Maybe your debugging requirement can be obtained by simply using > CTFCONVERT_O="" CTFMERGE_LIB=""? I'll give that a go - sounds like it should work for me as '-g' is passed in anyway (as you mention above). Thanks, -M
