compiling with a 3rd party DLL

compiling with a 3rd party DLL

[Shugard, Donald]

Hi,

I am using gcc under cygwin, trying to compile with a 3rd party dll. (CEI22032.dll)  I used imdef to create the definitions file (condor.def). I used dlltool to create condor.a. I used gcc to compile foo.c and link.

I get the error message foo.o(.text+0x31):foo.c: undefined reference to `_ar_version@4'  

I used od -c on foo.o and indeed the _ar_version@4 is in foo.o

I thought the -U to ddl_tool would prepend the "_" to the definitions and that --kill-at  to gcc would get rid of the @4

Any ideas what I am doing wrong?

	Thanks

	Don Shugard

gcc -v 
Reading specs from /usr/lib/gcc-lib/i686-pc-cygwin/3.3.3/specs
Configured with: /gcc/gcc-3.3.3-3/configure --verbose --prefix=/usr --exec-prefix=/usr --sysconfdir=
/etc --libdir=/usr/lib --libexecdir=/usr/lib --mandir=/usr/share/man --infodir=/usr/share/info --ena
ble-languages=c,ada,c++,d,f77,java,objc,pascal --enable-nls --without-included-gettext --enable-libg
cj --with-system-zlib --enable-interpreter --enable-threads=posix --enable-java-gc=boehm --enable-sj
lj-exceptions --disable-version-specific-runtime-libs --disable-win32-registry
Thread model: posix
gcc version 3.3.3 (cygwin special)


foo.c

#include <stdlib.h>
#include <stdio.h>
#include <time.h>
#include <ctype.h>
#include "utildefs.h"

int main(void)
{
    char api_version[150];

    ar_version(api_version);
    return 0;
}



condor.def

EXPORTS
ar_close
ar_clr_rx_count
ar_define_msg
ar_execute_bit
ar_force_version
ar_formatarinclabel
ar_formatbinarylabel
ar_get_boardtype
ar_get_config
ar_get_error
ar_get_harris
ar_get_label_filter
ar_get_latest
ar_get_raw_mode
ar_get_rx_count
ar_get_timercnt
ar_get_timercntl
ar_getblock
ar_getfilter
ar_getnext
ar_getnextt
ar_getword
ar_getwordt
ar_go
ar_init_dual_port
ar_init_slave
ar_int_control
ar_int_set
ar_int_slave
ar_label_filter
ar_loadslv
ar_loadslv_init_discrete
ar_modify_msg
ar_msg_control
ar_num_rchans
ar_num_xchans
ar_putblock
ar_putfilter
ar_putword
ar_putword2x16
ar_recreate_parity
ar_reformat
ar_reset
ar_reset_int
ar_reset_timercnt
ar_setinterrupts
ar_set_config
ar_set_harris
ar_set_raw_mode
ar_set_storage_mode
ar_set_timerrate
ar_timetag_control
ar_unformat
ar_version
ar_xmit_sync
ar_channel_cmd
ar_dump_dp
ar_set_arinc_config
ar_get_errorLV
ar_get_map
ar_setchparms
ar_get_boardname
ar_get_boardnameLV
__DebuggerHookData
@__lockDebuggerData$qv
@__unlockDebuggerData$qv



make.log

gcc -D_WIN32 -c foo.c
./impdef/impdef.exe CEI22032.dll > condor.def
#dlltool -A -U -k --input-def ./condor.def --dllname CEI22032.dll --output-lib ./condor.a
#dlltool -A --input-def ./condor.def --dllname CEI22032.dll --output-lib ./condor.a
dlltool -A -U --input-def ./condor.def --dllname CEI22032.dll --output-lib ./condor.a
#gcc foo.o CEI22032.dll -o foo.exe
#gcc foo.o ./condor.exp ./condor.a -o foo.exe
#gcc --verbose --kill-at foo.o ./condor.a -o foo.exe
#gcc foo.o ./condor.a --add-stdcall-alias --kill-at -o foo.exe
gcc foo.o ./condor.a --kill-at -o foo.exe
foo.o(.text+0x31):foo.c: undefined reference to `_ar_version@4'
collect2: ld returned 1 exit status
make: *** [foo.exe] Error 1