That otool-hv is the same test we first encountered in the original transition to two-level namespaces. Was that gcc3.3ish? Quick and easy because all we care about is the bit (the detail of the whole library), not the detailed symbol-by-symbol analysis.
dan On Tue, 28 Oct 2014 22:09:29 -0400, Jack Howarth <howarth.at.f...@gmail.com> wrote: > ---------- Forwarded message ---------- > From: Jack Howarth <howarth.at.f...@gmail.com> > Date: Tue, Oct 28, 2014 at 10:08 PM > Subject: Re: [Fink-devel] validation test for Puma-linked shared > libraries on darwin14 and later > To: Alexander Hansen <alexanderk.han...@gmail.com> > > Alternatively, the Apple linker developer pointed out, we can use... > > # otool -hv libgdbm.3.0.0.dylib > libgdbm.3.0.0.dylib: > Mach header > magic cputype cpusubtype caps filetype ncmds sizeofcmds flags > MH_MAGIC_64 X86_64 ALL 0x00 DYLIB 14 > 1536 NOUNDEFS DYLDLINK TWOLEVEL NO_REEXPORTED_DYLIBS > > vs > > # otool -hv libgdbm.3.0.0.dylib > libgdbm.3.0.0.dylib: > Mach header > magic cputype cpusubtype caps filetype ncmds sizeofcmds flags > MH_MAGIC_64 X86_64 ALL 0x00 DYLIB 14 > 1536 DYLDLINK NO_REEXPORTED_DYLIBS > > and look for the presence of TWOLEVEL. > > On Tue, Oct 28, 2014 at 9:38 PM, Jack Howarth > <howarth.at.f...@gmail.com> wrote: > > As I mentioned to Alexander on fink irc, it appears that we can use.. > > # /Library/Developer/CommandLineTools/usr/bin/dyldinfo -bind > .libs/libgdbm.3.0.0.dylib > bind information: > segment section address type addend > dylib symbol > __DATA __got 0x00004000 pointer 0 > libSystem ___stack_chk_guard > __DATA __nl_symbol_ptr 0x00004008 pointer 0 > libSystem dyld_stub_binder > > vs > > # /Library/Developer/CommandLineTools/usr/bin/dyldinfo -bind > .libs/libgdbm.3.0.0.dylib | grep flat > __DATA __got 0x00004000 pointer 0 > flat-namespace ___stack_chk_guard > __DATA __got 0x00004008 pointer 0 > flat-namespace _gdbm_errno > __DATA __nl_symbol_ptr 0x00004010 pointer 0 > flat-namespace dyld_stub_binder > > and just grep the output for flat-namespace. > Jack > > On Tue, Oct 28, 2014 at 9:14 PM, Alexander Hansen > <alexanderk.han...@gmail.com> wrote: > > On 10/28/14, 6:05 PM, Jack Howarth wrote: > > As I mentioned to Alexander on fink irc, I think we can add a > fatal fink validation error for the dynamic shared libraries on darwin14 > and later that are erroneously linked with -flat_namespace rather than > -undefined dynamic_lookup due to the buggy libtool. We can use the > following approach... > > 1) test with the 'file' command to make sure the shared library isn't > really a bundle > 2) if not a bundle, use 'otool -H <filename> | grep Hint' to look for... > > Two-level namespace hints table (0 hints) > > which shared libraries created with -flat_namespace should be missing. > > If this test fails on darwin14 or later, this should be treated as a > fatal validation error with the appropriate error message. > > Jack > > The good news is that Validation.pm already has a loop over the > installed dylibs in a .deb, excluding bundles, so adding an extra > test won't be too difficult. > > The bad news is that my test case (libtcd-shlibs on 10.10 with and > without the PatchScript) didn't seem to give different "otool -H " > output whether or not -flat_namespace was used. > -- Alexander Hansen, Ph.D. > Fink User Liaison > My package updates: http://finkakh.wordpress.com/ > > ------------------------- > > ------------------------------------------------------------------------------ > > ------------------------- > > _______________________________________________ > Fink-devel mailing list > Fink-devel@lists.sourceforge.net > List archive: > http://news.gmane.org/gmane.os.apple.fink.devel > Subscription management: > https://lists.sourceforge.net/lists/listinfo/fink-devel > -- Daniel Macks dma...@netspace.org ------------------------------------------------------------------------------ _______________________________________________ Fink-devel mailing list Fink-devel@lists.sourceforge.net List archive: http://news.gmane.org/gmane.os.apple.fink.devel Subscription management: https://lists.sourceforge.net/lists/listinfo/fink-devel
