Re: linkage problem with m4 1.4.11 on AIX 6.1

[Bruno Haible]

Hello,

Rainer Tammer wrote:
> | 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.

It is not clear to me where the problem comes from. Could you please provide
a few more bits of info, to track this down?

1) Does the problem also occur if you build m4-1.4.11 after freshly unpacking
   the tarball in an otherwise empty directory? ('cause the report could be
   related to a mix of builds done on different systems.)

2) What is the output of
     grep REPLACE_SIGNBIT config.status
   and of
     grep RANLIB config.status

3) Can you show the lines 401..453 of the generated lib/math.h?

4) What is the output of
     nm lib/libm4.a | grep -i signbit

5) Does the link error go away if you change the src/Makefile line

      m4_LDADD = ../lib/libm4.a $(LIBM4_LIBDEPS) $(POW_LIB)
   to
      m4_LDADD = ../lib/libm4.a ../lib/libm4.a $(LIBM4_LIBDEPS) $(POW_LIB)
   ?

Bruno