or download this
link -out:blib\arch\auto\DBD\Informix\Informix.dll -dll -nologo -nodef
+aultlib -debug -opt:ref,icf -libpath:"C:\Perl\lib\CORE" -machine:x8
+6 Informix.obj dbdimp.obj dbdattr.obj sqltoken.obj sqltype.obj ixblob
+.obj odbctype.obj kludge.obj link.obj esqlcver.obj esqlc_v6.obj /LIBP
+ATH:C:\PROGRA~2\IBM\Informix\11.70/lib /LIBPATH:C:\PROGRA~2\IBM\Infor
+mix\11.70/lib/esql "C:/PROGRA~2/IBM/Informix/11.70\lib\isqlt09a
+.lib" "C:/PROGRA~2/IBM/Informix/11.70\lib\igl4n304.lib" "C:/PROGRA~2/
+IBM/Informix/11.70\lib\iglxn304.lib" "C:/PROGRA~2/IBM/Informix/11.70\
+lib\igo4n304.lib" netapi32.lib wsock32.lib user32.lib winmm.lib advap
+i32.lib C:\Perl\lib\CORE\perl58.lib oldnames.lib kernel32.lib user32
+.lib gdi32.lib winspool.lib comdlg32.lib advapi32.lib shell32.lib ol
+e32.lib oleaut32.lib netapi32.lib uuid.lib ws2_32.lib mpr.lib winmm.
+lib version.lib odbc32.lib odbccp32.lib msvcrt.lib -def:Informix.def
Informix.def : error LNK2001: unresolved external symbol ifx_checkAPI
...
blib\arch\auto\DBD\Informix\Informix.lib : fatal error LNK1120: 2 unre
+solved externals
NMAKE : fatal error U1077: '"c:\Program Files (x86)\Microsoft Visual S
+tudio 10.0\VC\BIN\link.EXE"' : return code '0x460'
Stop.