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/