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Date: Tue, 01 Aug 2006 21:08:45 -0400
From: "Larry Hall (Cygwin)" <reply-to-list-only-lh AT cygwin DOT com>
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To: cygwin AT cygwin DOT com
Subject: Re: Fortran calling c compilation problem
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On 08/01/2006, Ben Wright wrote:
> I'm working on a project that uses a combination of c++, c and fortran to 
> build a library for use with the Java Native Interface. The library 
> compiles correctly under Linux with gcc 3.2.3, but I can't get it to 
> compile correctly under cygwin (using gcc 3.4.4).
> 
> I'm calling:
> 
> g++ -mno-cygwin -Wl,--add-stdcall-alias 
> -I/cygdrive/c/Java/jdk1.5.0_07/include 
> -I/cygdrive/c/Java/jdk1.5.0_07/include/win32 -shared -o Samplers.dll <a 
> whole bunch of source files here> -lstdc++ -lg2c
> 
> /cygdrive/c/DOCUME~1/ben/LOCALS~1/Temp/ccWWbiIF.o:gengam.f(.text+0x5): 
> undefined reference to `_dgamdv_'
> (plus others of similar form) 

The '-mno-cygwin' flag trigggers the "cross-compiler" to MinGW.  If you're
having problem with this switch, you should check with the MinGW folks
(http://www.mingw.org/), since you're really using their compiler, not
Cygwin's.


-- 
Larry Hall                              http://www.rfk.com
RFK Partners, Inc.                      (508) 893-9779 - RFK Office
216 Dalton Rd.                          (508) 893-9889 - FAX
Holliston, MA 01746

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