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Date:	Wed, 3 Jan 2007 15:48:13 -0500
From:	"Aaron Baughman" <aaron DOT baughman AT gmail DOT com>
To:	cygwin AT cygwin DOT com
Subject:	dll to LIB -- then link error
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I am working on a problem regarding creating a dll from c source code
of which I have written (JNI routines) along with linking to a
commercial dll that does contain a .def or .a file.  My OS is winXP
and I am using cygwin 2.510.2.2.

The steps I am going through to create the lib:

(1)  Use Borland's command line tool impdef to create a definition file.

impdef file1.def file1.dll

(2)   Use cygwin's command line tool, dlltool, to create imprt library
files for each dll that is used.

dlltool --dllname file1.dll --def file1.def --output-lib file1.a

I also tried the command with the -k command.

(3)  Placed all of the .a libraries within the cygwin\usr\lib\w32api directory

(4)  Attempt to create a dll containing my c code while linking to file1.dll

gcc -mno-cygwin -I"\\cygdrive\\c\\include\\Windows"
-I"\\cygdrive\\c\\j2sdk1.4.2_13\\include"
-I"\\cygdrive\\c\\j2sdk1.4.2_13\\include\\win32"
-I"\\cygdrive\\c\\Temp\\cygwin\\usr\\lib\\w32api"
-I"\\cygdrive\\c\\Temp\\cygwin\\home\\user\\dll"
-W1,--add-stdcall-alias -shared -o file1.dll source1.c source2.c

"\\cygdrive\\c\\include\\Windows" = contains all of the .h files
describing the commercial dll's that I am including in my C source
"\\cygdrive\\c\\j2sdk1.4.2_13\\include" = contains the jni.h file from
sun "\\cygdrive\\c\\j2sdk1.4.2_13\\include\\win32" = contains the
jni_md.h file from sun "\\cygdrive\\c\\Temp\\cygwin\\usr\\lib\\w32api"
= contains the .a file I created in step 2
"\\cygdrive\\c\\Temp\\cygwin\\home\\user\\dll" = contains the dll's
from the commerical company (file1.dll)

I recieve the following errors:

...source2.c:(.text+0x3):undefined reference to '_function AT 4'
...source2.c:(.text+0x3e):undefined reference to '_function2 AT 4'
...source2.c:(.text+0x7e):undefined reference to '_function3 AT 8'
...source2.c:(.text+0xc5):undefined reference to '_function4 AT 0'

The .def file looks like:
LIBRARY     file1.dll

EXPORTS
     function AT 1
     function2 AT 2
     function3 AT 3
     function4 AT 4

I would graciously appreciate any help.
Regards,
Aaron.

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