X-Recipient: archive-cygwin@delorie.com X-Spam-Check-By: sourceware.org Message-ID: <484135CE.30E20C20@dessent.net> Date: Sat, 31 May 2008 04:26:06 -0700 From: Brian Dessent X-Mailer: Mozilla 4.79 [en] (Windows NT 5.0; U) MIME-Version: 1.0 To: C S CC: cygwin Subject: Re: Cygwin - linker errors - __assert, __itob and __ftol References: <4ae9b89d0805301549i5ee30654l5f6335544ea38780@mail.gmail.com> Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit X-IsSubscribed: yes Reply-To: cygwin@cygwin.com Mailing-List: contact cygwin-help@cygwin.com; run by ezmlm List-Id: List-Subscribe: List-Archive: List-Post: List-Help: , Sender: cygwin-owner@cygwin.com Mail-Followup-To: cygwin@cygwin.com Delivered-To: mailing list cygwin@cygwin.com C S wrote: > gcc -D__int64="long long" -shared -I\C:\Apps\Java\jdk1.6.0_05\include > -I\C:\Apps\Java\jdk1.6.0_05\include\win32 -I\c:\Users\usmsci\My > Documents\shapefiles\shapelib128_bin_win -L\c:\Users\usmsci\My > Documents\shapefiles\shapelib128_bin_win myFile.cpp -o > libShapeData.dll c:\Users\usmsci\My > Documents\shapefiles\shapelib128_bin_win\shpopen.obj > c:\Users\usmsci\My > Documents\shapefiles\shapelib128_bin_win\dbfopen.obj > > the errors i get are: > > Warning: .drectve '-defaultlib:LIBC' - unrecognized > Warning: .drectve '-defaultlib:OLDNAMES' - unrecognized > Warning: .drectve '-defaultlib:LIBC' - unrecognized > Warning: .drectve '-defaultlib:OLDNAMES' - unrecognized > > c:\Users\usmsci\My Documents\shapefiles\shapelib128_bin_win\shpopen.o:shpopen.c > (.text+0x1485):undefined reference to __assert You can't mix and match objects like that. Those objects compiled by MSVC expect to be linked with the MSVCRT runtime, and here you're trying to link them against the Cygwin runtime. That's the cause of the linker errors. You can't do that. Every object needs to be consistent in the runtime that it was compiled against. So either you need to build everything against MSVCRT (i.e. gcc -mno-cygwin or using MSVC) or you need to build everything against Cygwin. But you can't do some with one and some the other. Brian -- Unsubscribe info: http://cygwin.com/ml/#unsubscribe-simple Problem reports: http://cygwin.com/problems.html Documentation: http://cygwin.com/docs.html FAQ: http://cygwin.com/faq/