Dear Gnulib maintainers,

Recently in a build of Gnuastro 0.9 (which uses Gnulib 
`v0.1-2539-gd6af24178'), we confronted a crash during the build of 
Gnulib's `getgroups.c' (error summary is in P.S.).

As further information, I am also attaching several outputs of the 
configuration and build which will hopefully provide much more detailed 
information on the host system and build environment. The two 
`redirect-*.txt' files are the full outputs of the `./configure' and 
`make' commands.

We really appreciate your help in fixing this problem.

Thank you very much for all the great effort on Gnulib,
Cheers,
Mohammad



P.S. Error message while building Gnulib within Gnuastro:

/bin/sh ../../libtool  --tag=CC   --mode=compile /usr/bin/gcc 
-DHAVE_CONFIG_H -I. -I../..   -I/usr/local/include  -Wall -O3  -pthread 
-MT getopt1.lo -MD -MP -MF $depbase.Tpo -c -o getopt1.lo getopt1.c &&\
mv -f $depbase.Tpo $depbase.Plo
In file included from getgroups.c:22:0:
getgroups.c:33:1: error: conflicting types for ‘rpl_getgroups’
  getgroups (int n _GL_UNUSED, GETGROUPS_T *groups _GL_UNUSED)
  ^
./unistd.h:1216:1: note: previous declaration of ‘rpl_getgroups’ was here
  _GL_FUNCDECL_RPL (getgroups, int, (int n, gid_t *groups));
  ^
Makefile:2208: recipe for target 'getgroups.lo' failed
make[4]: *** [getgroups.lo] Error 1
make[4]: *** Waiting for unfinished jobs....