(mgp-users 00596) Error building 1.08a and a question about transparency

[Rich Shepard <rshepard@appl-ecosys.com>]

  I've just put together the presentation I'm giving this coming Tuesday so
I thought to upgrade from 1.07 to 1.08a. The steps of ./configure, xmkmf,
and make Makefiles went just fine. The make step was going along nicely
until I hit this point:

gcc -o mgp -O2 -fno-strength-reduce      -L/usr/X11R6/lib mgp.o draw.o
parse.o plist.o globals.o x11.o font.o background.o      scanner.o grammar.o
postscript.o tfont.o embed.o unimap.o mng.o      -L./image -lmgpimage -lttf
-L/usr/local/lib -L/usr/local/lib -lm  -L/usr/lib -lpng  -lXext -lX11
./image/libmgpimage.a(png.o): In function ngLoad':
png.o(.text+0x1aa): undefined reference to ng_set_palette_to_rgb'
png.o(.text+0x1cc): undefined reference to ng_set_gray_1_2_4_to_8'
png.o(.text+0x204): undefined reference to ng_set_tRNS_to_alpha'
collect2: ld returned 1 exit status
make: *** [mgp] Error 1

  Can someone suggest what I need to do?

  On a different topic, two of the pages for this upcoming talk display
equations that I wrote in WordPefect-8 and printed to a disk file using the
supplied HP LJ5 color PostScript printer driver. I used ImageMagick's
convert function to create .jpg files from the .ps files, then used The GIMP
to crop them. All this works just fine, and the '%image ...' command
displays them without a hitch. But, the background I'm using is
'lemonchiffon' and the background for the equation images is white.

  Is there a way to make the .jpg image background transparent so the mpg
background color shows through?

TIA,

Rich

Dr. Richard B. Shepard, President

                       Applied Ecosystem Services, Inc. (TM)
            2404 SW 22nd Street | Troutdale, OR 97060-1247 | U.S.A.
 + 1 503-667-4517 (voice) | + 1 503-667-8863 (fax) | rshepard@appl-ecosys.com