dnl
dnl Configuration for trio
dnl

AC_INIT(triodef.h)

AC_PROG_CC
ifdef([AC_PROG_CC_STDC], [AC_PROG_CC_STDC])
AC_LANG_C

AC_PROG_INSTALL
AC_PROG_RANLIB

dnl
dnl Alpha floating-point compiler option.
dnl

AC_MSG_CHECKING(for IEEE compilation options)
AC_CACHE_VAL(ac_cv_ieee_option, [
AC_TRY_COMPILE(,[
#if !(defined(__alpha) && (defined(__DECC) || defined(__DECCXX) || (defined(__osf__) && defined(__LANGUAGE_C__))) && (defined(VMS) || defined(__VMS)))
# error "Option needed"
#endif
],ac_cv_ieee_option="/IEEE_MODE=UNDERFLOW_TO_ZERO/FLOAT=IEEE",
AC_TRY_COMPILE(,[
#if !(defined(__alpha) && (defined(__DECC) || defined(__DECCXX) || (defined(__osf__) && defined(__LANGUAGE_C__))) && !(defined(VMS) || defined(__VMS)) && !defined(_CFE))
# error "Option needed"
#endif
],ac_cv_ieee_option="-ieee",
AC_TRY_COMPILE(,[
#if !(defined(__alpha) && (defined(__GNUC__) && (defined(__osf__) || defined(__linux__))))
# error "Option needed"
#endif
],ac_cv_ieee_option="-mieee",
ac_cv_ieee_option="none"
)
)
)
])
AC_MSG_RESULT($ac_cv_ieee_option)
if test $ac_cv_ieee_option != none; then
  CFLAGS="${CFLAGS} ${ac_cv_ieee_option}"
fi

AC_OUTPUT(Makefile)