windows 64 bit build problems

Hi,

I'm building a C application which uses gd. I downloaded and am using
the latest windows binaries from libgd.org (2.0.34 according to gd.h).
When I compile my application using the msvc 32-bit compiler
everything works fine (setenv /x86). When I compile the exact same
code using the 64-bit compiler and libraries (setenv /x64) I get 14
unresolved externals fro gd.  I've listed them below. So what's the
trick? Is there a known problem with using gd in  64-bit c
applications with msvc (cl/link)?  Thanks for any pointers / help. To
reiterate this application builds fine using the 32-bit version of
MSVC compiler from the SDK (cl/link) but fails using the 64-bit
compiler/linker. No other changes to source or even compiler / linker.

Thank you

--------------------------------------------------------
foo.obj : error LNK2019: unresolved external symbol __imp_gdImageDestroy ref
erenced in function get_image_data
foo.obj : error LNK2019: unresolved external symbol __imp_gdImageGifPtr refe
renced in function get_image_data
foo.obj : error LNK2019: unresolved external symbol __imp_gdImageCreatePalet
teFromTrueColor referenced in function get_image_data
foo.obj : error LNK2019: unresolved external symbol __imp_gdImagePngPtr refe
renced in function get_image_data
foo.obj : error LNK2019: unresolved external symbol __imp_gdFree referenced
in function write_image
foo.obj : error LNK2019: unresolved external symbol __imp_gdImageColorAlloca
te referenced in function get_atom_colour
foo.obj : error LNK2019: unresolved external symbol __imp_gdImageArc referen
ced in function mark_atom
foo.obj : error LNK2019: unresolved external symbol __imp_gdImageSetThicknes
s referenced in function mark_atom
foo.obj : error LNK2019: unresolved external symbol __imp_gdImageSetAntiAlia
sed referenced in function mark_atom
foo.obj : error LNK2019: unresolved external symbol __imp_gdImageStringFT re
ferenced in function label_atom
foo.obj : error LNK2019: unresolved external symbol __imp_gdImageGetPixel re
ferenced in function get_bbox
foo.obj : error LNK2019: unresolved external symbol __imp_gdImageFilledRecta
ngle referenced in function get_bbox
foo.obj : error LNK2019: unresolved external symbol __imp_gdImageCreateTrueC
olor referenced in function get_bbox
foo.obj : error LNK2019: unresolved external symbol __imp_gdImageSetPixel re
ferenced in function draw_line
foo.exe : fatal error LNK1120: 14 unresolved externals

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