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 linker can't seem to find references of the form _dgamdv_. Functions
are defined in the c portion as gdamdv_(<whatever>), and are called from
Fortran as DGAMDV(). This works fine under Linux.
What's baffling is that if I compile just the c portion and inspect the
output with nm then the supposedly undefined references are in there.
10004148 T _dgamdv_
Is there some quirk of cygwin when calling c from within fortran I need
to set a flag for when compiling? I'd ordinarily chalk it up to my weak
knowledge of c- but it compiles without complaint under Linux.
Thanks in advance.
--
Benjamin Wright
Statistical Laboratory
Centre for Mathematical Sciences
Wilberforce Road
Cambridge
CB3 0WB
(01223) 766 536
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