Portability fixes OpenUnix 8 & UnixWare 7.1.x

acinclude.m4

@@ -1165,7 +1165,8 @@ m4_define([_AC_PROG_CXX_EXIT_DECLARATION],
    'extern "C" void std::exit (int); using std::exit;' \
    'extern "C" void exit (int) throw ();' \
    'extern "C" void exit (int);' \
-   'void exit (int);'
+   'void exit (int);' \
+   '#include <stdlib.h>'
 do
   _AC_COMPILE_IFELSE([AC_LANG_PROGRAM([@%:@include <stdlib.h>
 $ac_declaration],

configure.in

@@ -1170,10 +1170,8 @@ then
       with_named_thread="-Kthread -lsocket -lnsl"
       if expr "$SYSTEM_TYPE" : ".*unixware7.0.0" > /dev/null
       then
-#        AC_DEFINE(HAVE_OpenUNIX8_THREADS)
         AC_DEFINE(HAVE_UNIXWARE7_THREADS)
       else
-#        AC_DEFINE(HAVE_OpenUNIX8_POSIX)
         AC_DEFINE(HAVE_UNIXWARE7_POSIX)
       fi
       # We must have cc
@@ -1182,10 +1180,8 @@ then
       then
 	{ echo "configure: error: On OpenUNIX8 and UnixWare7 MySQL must be compiled with cc. See the Installation chapter in the Reference Manual." 1>&2; exit 1; };
       else
-#	CC="$CC -Kthread -DOpenUNIX8";
-#	CXX="$CXX -Kthread -DOpenUNIX8";
-	CC="$CC -Kthread -DUNIXWARE_7";
-	CXX="$CXX -Kthread -DUNIXWARE_7";
+ 	CC="$CC -Kthread -DUNIXWARE_7 -DHAVE_BROKEN_RWLOCK";
+ 	CXX="$CXX -Kthread -DUNIXWARE_7 -DHAVE_BROKEN_RWLOCK";
       fi
       AC_MSG_RESULT("yes")
     else