From mint-bounce@lists.fishpool.fi Thu Jan 31 11:49:34 2008 From: Eero Tamminen Organization: Koti To: mint@lists.fishpool.fi Subject: Re: [MiNT] gcc-4.2.2-mint-20080127 Date: Thu, 31 Jan 2008 18:06:02 +0200 User-Agent: KMail/1.9.6 Cc: Vincent =?iso-8859-1?q?Rivi=E8re?= , mint References: <479C9FDB.7020803@freesbee.fr> <479E5050.7040903@freesbee.fr> In-Reply-To: <479E5050.7040903@freesbee.fr> MIME-Version: 1.0 Content-Type: text/plain; charset="iso-8859-1" Content-Disposition: inline Message-Id: <200801311806.02390.oak@helsinkinet.fi> X-ecartis-version: Ecartis v1.0.0 Sender: mint-bounce@lists.fishpool.fi Errors-to: mint-bounce@lists.fishpool.fi X-original-sender: oak@helsinkinet.fi Precedence: bulk List-help: List-unsubscribe: List-Id: X-List-ID: List-subscribe: List-owner: List-post: Content-Transfer-Encoding: 8bit X-MIME-Autoconverted: from quoted-printable to 8bit by mail.sparemint.org id m0VGnXvu028614 Hi, On Monday 28 January 2008, Vincent Rivière wrote: > I tried to cross-build ScummVM from the sources. Of course, it didn't > link, because I don't have all the required libraries. However, it is > enough to reproduce the virtual thunk problem ! > > I finally understood that `non-virtual thunk to > MidiDriver_Emulated::open()' is simply the demangled name of a symbol > (i.e. a function with a non-standard name) > > An example of demangling using the c++filt tool: > $ m68k-atari-mint-c++filt __ZTv0_n12_N5Scumm9ScummFileD1Ev > virtual thunk to Scumm::ScummFile::~ScummFile() > > That problematic symbols are defined with .globl in several files, thus > the linker complains with multiple definitions. > > ScummVM uses a complicated class tree with multiple inheritance and > virtual inheritance (!), which is quite uncommon. The problem may be > caused by a GCC bug, probably not related with the MiNT patch. Is the linker upto date? I think GCC changed the C++ constructor/destructor ABI in v4.x which required also updates in Gdb. Maybe linker needed updates too? - Eero