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Re: Cygwin - linker errors - __assert, __itob and __ftol

i did not know about gcj. i guess i missed that somehow? thanks for the tip.

my command line right now is:

gcj -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\shapelib-1.2.10\shapelib-1.2.10 -I
C:\Users\usmsci\My Documents\shapefiles\shapelib128_bin_win -L
c:\Users\usmsci\My Documents\shapefiles\shapelib128_bin_win
fileName.cpp -o libShapeData.dll c:\Users\usmsci\My
Documents\shapefiles\shapelib128_bin_win\shpopen.o c:\Users\usmsci\My

the error i get is: gcj: cannot specify -D without --main  what do i
need to do to remedy this? thanks!!!

i dont have a main function in my .cpp file. i assume thats what its
complaining about? i am using the -D option otherwise i would endless
complaints about jlong not having a type and a bunch of other related

On Fri, May 30, 2008 at 5:23 AM, Tim Prince <> wrote:
> C S wrote:
>> hi all - i am trying to compile a C++ native library using the
>> shapelibrary. the one for linux is built but in cygwin i seem to be
>> having some linker error problems and i have to assume it has to do
>> with something regarding MSVC. i am including Java because i am using
>> JNI to talk back and forth to Java. libShapeData.dll is my own native
>> library that i want to build for windows.
> Perhaps you could explain why you don't use the cygwin java native compiler
> (gcj).
> --
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