build trouble

[Jason Stover]

Fresh checkout, x86 and usual GNU/Linux setup:

 gcc -std=gnu99 -DHAVE_CONFIG_H -DEXEEXT=\"\" -I. -I.. -g -O2 
-Wdeclaration-after-statement -MT uniconv/u8-conv-from-enc.lo -MD -MP -MF 
uniconv/.deps/u8-conv-from-enc.Tpo -c uniconv/u8-conv-from-enc.c  -fPIC -DPIC 
-o uniconv/.libs/u8-conv-from-enc.o
In file included from ./unitypes.h:21,
                 from ./uniconv.h:23,
                 from uniconv/u8-conv-from-enc.c:22:
./stdint.h:281: error: size of array '_verify_intmax_size' is negative

This is a new system, so could some missing prereqruisite have gone
unnoticed by configure?