linkage problem with m4 1.4.11 on AIX 6.1

[Rainer Tammer]

Hello,
on AIX 6.1 two objects are missing from the libm4.a.

...
Making all in src
gmake[2]: Entering directory 
`/opt/freeware/src/packages/BUILD/m4-1.4.11/src'
gcc -std=gnu99  -g -O2   -o m4 m4.o builtin.o debug.o eval.o format.o 
freeze.o input.o macro.o output.o path.o symtab.o stackovf.o 
../lib/libm4.a  -lm
ld: 0711-317 ERROR: Undefined symbol: .gl_signbitd
ld: 0711-317 ERROR: Undefined symbol: .gl_signbitl
ld: 0711-345 Use the -bloadmap or -bnoquiet option to obtain more 
information.
collect2: ld returned 8 exit status
gmake[2]: *** [m4] Error 1
gmake[2]: Leaving directory `/opt/freeware/src/packages/BUILD/m4-1.4.11/src'
gmake[1]: *** [all-recursive] Error 1
gmake[1]: Leaving directory `/opt/freeware/src/packages/BUILD/m4-1.4.11'
gmake: *** [all] Error 2

If I add signbitd.o and signbitl.o to M4_LIBOBJS (in src/Makefile) then 
the link is successful.
With this "fix" all tests from make check are successful.

Configure was called with: ./configure 
--prefix=/var/tmp/m4-root/opt/freeware
The compile was done with gcc 4.2.3 on AIX 6.1 TL00 SP4

This problem was not present in m4 1.4.10.
In 1.4.10 the signbitd.o / signbitf.o / signbitl.o ware added 
automatically to the libm4.a.

Any ideas ?

Bye
 Rainer