pike.git/ src/ configure.in

Branch: Tag:

2000-08-20

2000-08-20 13:47:37 by Henrik Grubbström (Grubba) <grubba@grubba.org>

Added support for cross-compilation to the floatingpoint tests.
Magical constants are fun...

Rev: src/configure.in:1.399

1: - AC_REVISION("$Id: configure.in,v 1.398 2000/08/20 12:50:51 grubba Exp $") + AC_REVISION("$Id: configure.in,v 1.399 2000/08/20 13:47:37 grubba Exp $")   AC_INIT(interpret.c)   AC_CONFIG_HEADER(machine.h)   
2891:   ]])      AC_MSG_CHECKING(for type of float) - AC_CACHE_VAL(pike_cv_float_type, - [AC_TRY_RUN(float_check(float,BIG),pike_cv_float_type=ieee_big, -  [AC_TRY_RUN(float_check(float,LITTLE),pike_cv_float_type=ieee_little, -  pike_cv_float_type=not_ieee)],pike_cv_float_type=not_ieee)]) + AC_CACHE_VAL(pike_cv_float_type, [ +  AC_TRY_RUN(float_check(float,BIG), pike_cv_float_type=ieee_big, [ +  AC_TRY_RUN(float_check(float,LITTLE), pike_cv_float_type=ieee_little, +  pike_cv_float_type=not_ieee, pike_cv_float_type=not_ieee) +  ], [ +  # Use some magical constants... +  cat > conftest.$ac_ext <<EOF + dnl This sometimes fails to find confdefs.h, for some reason. + dnl [#]line __oline__ "[$]0" + [#]line __oline__ "configure" + #include "confdefs.h" + #include <stdio.h> + float float_info[[]] = { +  0.0, +  14914788644012054221422592.0, 16305677175569252352.0, +  0.0 + }; + EOF +  if AC_TRY_EVAL(ac_compile); then +  if test -f "conftest.$ac_objext"; then +  if strings "conftest.$ac_objext" | grep "iEeE_bIg" >/dev/null; then +  pike_cv_float_type=ieee_big +  else +  if strings "conftest.$ac_objext" | grep "EeEigIb_" >/dev/null; then +  pike_cv_float_type=ieee_little +  else +  pike_cv_float_type=not_ieee +  fi +  fi +  else +  AC_MSG_WARN([Object file not found.]) +  pike_cv_float_type=not_ieee +  fi +  else +  pike_cv_float_type=not_ieee +  fi +  ]) + ])   if test "$pike_cv_float_type" = ieee_big; then    AC_MSG_RESULT(IEEE big endian)    AC_DEFINE(FLOAT_IS_IEEE_BIG)
2908:   fi      AC_MSG_CHECKING(for type of double) - AC_CACHE_VAL(pike_cv_double_type, - [AC_TRY_RUN(float_check(double,BIG),pike_cv_double_type=ieee_big, -  [AC_TRY_RUN(float_check(double,LITTLE),pike_cv_double_type=ieee_little, -  pike_cv_double_type=not_ieee)],pike_cv_double_type=not_ieee)]) + AC_CACHE_VAL(pike_cv_double_type, [ +  AC_TRY_RUN(float_check(double,BIG), pike_cv_double_type=ieee_big, [ +  AC_TRY_RUN(float_check(double,LITTLE), pike_cv_double_type=ieee_little, +  pike_cv_double_type=not_ieee, pike_cv_double_type=not_ieee) +  ], [ +  # Use some magical constants... +  cat > conftest.$ac_ext <<EOF + dnl This sometimes fails to find confdefs.h, for some reason. + dnl [#]line __oline__ "[$]0" + [#]line __oline__ "configure" + #include "confdefs.h" + #include <stdio.h> + double double_info[[]] = { +  0.0, +  12794738495187527498222028847205909954314554441725728393516969126669975252147490126864122090122288822751876426313291683594796075946303753742007913302630260537160845833197547903208108732031187791380480.0, +  0.0 + }; + EOF +  if AC_TRY_EVAL(ac_compile); then +  if test -f "conftest.$ac_objext"; then +  if strings "conftest.$ac_objext" | grep "iEeE_bIg" >/dev/null; then +  pike_cv_double_type=ieee_big +  else +  if strings "conftest.$ac_objext" | grep "gIb_EeEi" >/dev/null; then +  pike_cv_double_type=ieee_little +  else +  pike_cv_double_type=not_ieee +  fi +  fi +  else +  AC_MSG_WARN([Object file not found.]) +  pike_cv_float_type=not_ieee +  fi +  else +  pike_cv_float_type=not_ieee +  fi +  ]) + ])   if test "$pike_cv_double_type" = ieee_big; then    AC_MSG_RESULT(IEEE big endian)    AC_DEFINE(DOUBLE_IS_IEEE_BIG)