Configure fails on cross compile with "error: cannot run test program while cross compiling".

The variable linux_getgrouplist_ok does not have a cache check, so it cannot be defined in site config(config.site) to avoid the error.

Any cross compile host containing linux will have this problem.

The following change to source/configure.in resolves this problem:

*** configure.in.orig   2007-02-04 12:59:28.000000000 -0600
--- configure.in        2007-04-23 11:11:31.000000000 -0500
***************
*** 1403,1408 ****
--- 1403,1409 ----
  case "$host_os" in
      *linux*)
         # glibc <= 2.3.2 has a broken getgrouplist
+        AC_CACHE_CHECK([for broken getgrouplist],linux_getgrouplist_ok,[
         AC_TRY_RUN([
  #include <unistd.h>
  #include <sys/utsname.h>
***************
*** 1419,1425 ****
  #endif
         exit(0);
  }
! ], [linux_getgrouplist_ok=yes], [linux_getgrouplist_ok=no])
         if test x"$linux_getgrouplist_ok" = x"yes"; then
            AC_DEFINE(HAVE_GETGROUPLIST, 1, [Have good getgrouplist])
         fi
--- 1420,1426 ----
  #endif
         exit(0);
  }
! ], [linux_getgrouplist_ok=yes], [linux_getgrouplist_ok=no])])
         if test x"$linux_getgrouplist_ok" = x"yes"; then
            AC_DEFINE(HAVE_GETGROUPLIST, 1, [Have good getgrouplist])
         fi