Problems building lib/getloadavg.c on Solaris 2.5.1

[Albert Chin]

Solaris 2.5.1 has uint32_t in <synch.h>. I fixed a bug in
m4/uint32_t.m4 to correctly define uint32_t on this platform if
uint32_t is unavailable in AC_INCLUDES_DEFAULT. However, <synch.h>
isn't in AC_INCLUDES_DEFAULT. So, we AC_DEFINE(uint32_t and
lib/getloadavg.c pulls in <synch.h>, causing a conflict between the
typedef in <synch.h> and the #define in "config.h":
  cc -DHAVE_CONFIG_H -DLIBDIR=\"/opt/TWWfsw/coreutils53/lib\" -I. -I.
  -I..  -I.. -I. -I/opt/TWWfsw/libiconv19/include
  -I/opt/TWWfsw/gettext014/include  -mr -Qn -xO2 -xtarget=generic -c
  getloadavg.c
  "/usr/include/sys/synch.h", line 22: invalid type combination
  "/usr/include/sys/synch.h", line 22: warning: useless declaration
  "/usr/include/sys/synch.h", line 22: warning: typedef declares no type name
  cc: acomp failed for getloadavg.c

So, how do we solve this? Do I augment m4/uint32_t.m4 to include
<synch.h> if available and then add:
  #ifdef HAVE_SYNC_H
  #include <sync.h>
  #endif
wherever uint32_t is needed?

-- 
albert chin (address@hidden)