apr for mod_webapp make problem

[Vincent Gazzillo]

trying to comile apr for mod_webapp under redhat linux s/390 2.4.9-31.1.
ran ./buildconf and ./configure as directed,
but make gets error in system.h with error messages:
  /usr/include/asm/system.h: In function '__xchg':
  /usr/include/asm/system.h:67: '__u32 undeclared
  /usr/include/asm/system.h:67: parse error before 'ptr'
  /usr/include/asm/system.h:90: parse error before 'ptr'
  make[2]: *** [apr_atomic.lo] Error 1
using apr_20020416102752.tar.gz
is there any solution to this problem?