[GRASSLIST:2856] Compilation problem w/5pre2: flate.c (zlib?)

[nsmith at holycross.edu]

I'm failing to complie GRASS5pre2 on YellowDogLinux.    At 
src/libes/gis, here's what happens:

gcc -g -O2  -I/usr/include/pgsql/ -I/usr/include 
-I/home/nsmith/grass5.0.0pre2/src/include  -I/usr/incl
ude  -c flate.c -o OBJ.powerpc-unknown-linux-gnu/flate.o
flate.c: In function `break_compile':
flate.c:123: `NULL' undeclared (first use in this function)
flate.c:123: (Each undeclared identifier is reported only once
flate.c:123: for each function it appears in.)
make[1]: *** [OBJ.powerpc-unknown-linux-gnu/flate.o] Error 1
make[1]: Leaving directory `/home/nsmith/grass5.0.0pre2/src/libes/gis'
GISGEN failure at STEP: src/libes/gis

Earlier postings seem to describe a similar problem as a failure to find 
zlibs.  I have configured (somewhat redundantly) using
  ./configure --with-includes="/usr/include/pgsql/ /usr/include"  
--with-zlib-includes=/usr/include  --with-libs=/usr/lib --with-zlib-
libs=/usr/lib

and seem to get reasonable output:  in src/CMD/head/head.ARCH I have the 
following values (correct for my system):
ZLIB                = -I/usr/include  -L/usr/lib -lz
ZLIBINCPATH         = -I/usr/include
ZLIBLIBPATH         =  -L/usr/lib

So if it's not a failure to find zlib, is it another library problem, or 
something else I'm missing?

Thanks in advance for any suggestions,

Neel Smith
nsmith at holycross.edu