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Building a DLL with libtool on cygwin


I work on a package called Babel, and someone else ported it to cygwin a while ago. I am in the process of trying to make a new release of Babel. When I tried out the new release on cygwin, I a link error I don't know what to do about. I tried searching for relevant information using google, but I can't find anything. The error message appears below.

If you can offer any advice, I would appreciate whatever you can offer.

Thanks,

Tom

/bin/bash ../libtool --mode=link gcc -g -O2 -o libsidl.la -rpath /tmp/cygwin/
=inst/lib -no-undefined -release 0.8.0 SIDLfortran.lo SIDLfortarray.lo SIDL_Java
.lo SIDL_String.lo SIDL_bool_IOR.lo SIDL_char_IOR.lo SIDL_int_IOR.lo SIDL_long_
IOR.lo SIDL_float_IOR.lo SIDL_double_IOR.lo SIDL_fcomplex_IOR.lo SIDL_dcomplex_I
OR.lo SIDL_opaque_IOR.lo SIDL_string_IOR.lo SIDL_interface_IOR.lo ltdl.lo SIDL_B
aseClass_IOR.lo SIDL_BaseClass_Skel.lo SIDL_BaseClass_Stub.lo SIDL_BaseException
_IOR.lo SIDL_BaseException_Skel.lo SIDL_BaseException_Stub.lo SIDL_BaseInterface
_IOR.lo SIDL_BaseInterface_Stub.lo SIDL_DLL_IOR.lo SIDL_DLL_Skel.lo SIDL_DLL_Stu
b.lo SIDL_Loader_IOR.lo SIDL_Loader_Skel.lo SIDL_Loader_Stub.lo SIDL_ClassInfo_I
OR.lo SIDL_ClassInfo_Stub.lo SIDL_ClassInfoI_IOR.lo SIDL_ClassInfoI_Stub.lo SIDL
_ClassInfoI_Skel.lo SIDL_BaseClass_Impl.lo SIDL_BaseException_Impl.lo SIDL_DLL_I
mpl.lo SIDL_Loader_Impl.lo SIDL_ClassInfoI_Impl.lo
rm -fr .libs/libsidl.la .libs/libsidl.* .libs/libsidl-0.8.0.*
generating symbol list for `libsidl.la'
dlltool --export-all --exclude-symbols DllMain@12,_cygwin_dll_entry@12,_cygwin_
noncygwin_dll_entry@12,DllMainCRTStartup@12,DllEntryPoint@12 --output-def .libs/
cygsidl-0-8-0.dll-def SIDLfortran.lo SIDLfortarray.lo SIDL_Java.lo SIDL_String.
lo SIDL_bool_IOR.lo SIDL_char_IOR.lo SIDL_int_IOR.lo SIDL_long_IOR.lo SIDL_float
_IOR.lo SIDL_double_IOR.lo SIDL_fcomplex_IOR.lo SIDL_dcomplex_IOR.lo SIDL_opaque
_IOR.lo SIDL_string_IOR.lo SIDL_interface_IOR.lo ltdl.lo SIDL_BaseClass_IOR.lo S
IDL_BaseClass_Skel.lo SIDL_BaseClass_Stub.lo SIDL_BaseException_IOR.lo SIDL_Base
Exception_Skel.lo SIDL_BaseException_Stub.lo SIDL_BaseInterface_IOR.lo SIDL_Base
Interface_Stub.lo SIDL_DLL_IOR.lo SIDL_DLL_Skel.lo SIDL_DLL_Stub.lo SIDL_Loader_
IOR.lo SIDL_Loader_Skel.lo SIDL_Loader_Stub.lo SIDL_ClassInfo_IOR.lo SIDL_ClassI
nfo_Stub.lo SIDL_ClassInfoI_IOR.lo SIDL_ClassInfoI_Stub.lo SIDL_ClassInfoI_Skel.
lo SIDL_BaseClass_Impl.lo SIDL_BaseException_Impl.lo SIDL_DLL_Impl.lo SIDL_Loade
r_Impl.lo SIDL_ClassInfoI_Impl.lo
sed -e "1,/EXPORTS/d" -e "s/ @ [0-9]*//" -e "s/ *;.*$//" < .libs/cygsidl-0-8-0.
dll-def > .libs/libsidl.exp
if test "x`sed 1q .libs/libsidl.exp`" = xEXPORTS; then cp .libs/libsidl.exp .lib
s/cygsidl-0-8-0.dll-def; else echo EXPORTS > .libs/cygsidl-0-8-0.dll-def; _lt_hi
nt=1; cat .libs/libsidl.exp | while read symbol; do set dummy $symbol; case $# i
n 2) echo " $2 @ $_lt_hint ; " >> .libs/cygsidl-0-8-0.dll-def;; 4) echo " $2 $3
$4 ; " >> .libs/cygsidl-0-8-0.dll-def; _lt_hint=`expr $_lt_hint - 1`;; *) echo "
$2 @ $_lt_hint $3 ; " >> .libs/cygsidl-0-8-0.dll-def;; esac; _lt_hint=`expr 1 +
$_lt_hint`; done; fi
gcc -Wl,--base-file,.libs/cygsidl-0-8-0.dll-base -Wl,-e,__cygwin_dll_entry@12 -
o .libs/cygsidl-0-8-0.dll SIDLfortran.lo SIDLfortarray.lo SIDL_Java.lo SIDL_Str
ing.lo SIDL_bool_IOR.lo SIDL_char_IOR.lo SIDL_int_IOR.lo SIDL_long_IOR.lo SIDL_f
loat_IOR.lo SIDL_double_IOR.lo SIDL_fcomplex_IOR.lo SIDL_dcomplex_IOR.lo SIDL_op
aque_IOR.lo SIDL_string_IOR.lo SIDL_interface_IOR.lo ltdl.lo SIDL_BaseClass_IOR.
lo SIDL_BaseClass_Skel.lo SIDL_BaseClass_Stub.lo SIDL_BaseException_IOR.lo SIDL_
BaseException_Skel.lo SIDL_BaseException_Stub.lo SIDL_BaseInterface_IOR.lo SIDL_
BaseInterface_Stub.lo SIDL_DLL_IOR.lo SIDL_DLL_Skel.lo SIDL_DLL_Stub.lo SIDL_Loa
der_IOR.lo SIDL_Loader_Skel.lo SIDL_Loader_Stub.lo SIDL_ClassInfo_IOR.lo SIDL_Cl
assInfo_Stub.lo SIDL_ClassInfoI_IOR.lo SIDL_ClassInfoI_Stub.lo SIDL_ClassInfoI_S
kel.lo SIDL_BaseClass_Impl.lo SIDL_BaseException_Impl.lo SIDL_DLL_Impl.lo SIDL_L
oader_Impl.lo SIDL_ClassInfoI_Impl.lo
/usr/lib/gcc-lib/i686-pc-cygwin/3.2/../../../libcygwin.a(libcmain.o)(.text+0x7c)
: undefined reference to `_WinMain@16'
collect2: ld returned 1 exit status
make[2]: *** [libsidl.la] Error 1
make[2]: Leaving directory `/tmp/cygwin/runtime/sidl'
make[1]: *** [check-recursive] Error 1
make[1]: Leaving directory `/tmp/cygwin/runtime'
make: *** [check-recursive] Error 1


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