mirror of https://github.com/python/cpython
Benjamin Peterson
GitHub
parent
9da3961f36
commit
b3b8cb419e
|
|
@ -288,4 +288,5 @@ AS_VAR_COPY([$1], [pkg_cv_][$1])
|
|||
AS_VAR_IF([$1], [""], [$5], [$4])dnl
|
||||
])dnl PKG_CHECK_VAR
|
||||
|
||||
m4_include([m4/ax_c_float_words_bigendian.m4])
|
||||
m4_include([m4/ax_check_openssl.m4])
|
||||
|
|
|
|||
|
|
@ -13853,132 +13853,78 @@ fi
|
|||
# * Check for various properties of floating point *
|
||||
# **************************************************
|
||||
|
||||
{ $as_echo "$as_me:${as_lineno-$LINENO}: checking whether C doubles are little-endian IEEE 754 binary64" >&5
|
||||
$as_echo_n "checking whether C doubles are little-endian IEEE 754 binary64... " >&6; }
|
||||
if ${ac_cv_little_endian_double+:} false; then :
|
||||
{ $as_echo "$as_me:${as_lineno-$LINENO}: checking whether float word ordering is bigendian" >&5
|
||||
$as_echo_n "checking whether float word ordering is bigendian... " >&6; }
|
||||
if ${ax_cv_c_float_words_bigendian+:} false; then :
|
||||
$as_echo_n "(cached) " >&6
|
||||
else
|
||||
|
||||
if test "$cross_compiling" = yes; then :
|
||||
ac_cv_little_endian_double=no
|
||||
else
|
||||
cat confdefs.h - <<_ACEOF >conftest.$ac_ext
|
||||
|
||||
ax_cv_c_float_words_bigendian=unknown
|
||||
cat confdefs.h - <<_ACEOF >conftest.$ac_ext
|
||||
/* end confdefs.h. */
|
||||
|
||||
#include <string.h>
|
||||
int main() {
|
||||
double x = 9006104071832581.0;
|
||||
if (memcmp(&x, "\x05\x04\x03\x02\x01\xff\x3f\x43", 8) == 0)
|
||||
return 0;
|
||||
else
|
||||
return 1;
|
||||
}
|
||||
|
||||
double d = 90904234967036810337470478905505011476211692735615632014797120844053488865816695273723469097858056257517020191247487429516932130503560650002327564517570778480236724525140520121371739201496540132640109977779420565776568942592.0;
|
||||
|
||||
|
||||
_ACEOF
|
||||
if ac_fn_c_try_run "$LINENO"; then :
|
||||
ac_cv_little_endian_double=yes
|
||||
else
|
||||
ac_cv_little_endian_double=no
|
||||
if ac_fn_c_try_compile "$LINENO"; then :
|
||||
|
||||
|
||||
if grep noonsees conftest.$ac_objext >/dev/null ; then
|
||||
ax_cv_c_float_words_bigendian=yes
|
||||
fi
|
||||
rm -f core *.core core.conftest.* gmon.out bb.out conftest$ac_exeext \
|
||||
conftest.$ac_objext conftest.beam conftest.$ac_ext
|
||||
if grep seesnoon conftest.$ac_objext >/dev/null ; then
|
||||
if test "$ax_cv_c_float_words_bigendian" = unknown; then
|
||||
ax_cv_c_float_words_bigendian=no
|
||||
else
|
||||
ax_cv_c_float_words_bigendian=unknown
|
||||
fi
|
||||
fi
|
||||
|
||||
fi
|
||||
|
||||
{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_little_endian_double" >&5
|
||||
$as_echo "$ac_cv_little_endian_double" >&6; }
|
||||
if test "$ac_cv_little_endian_double" = yes
|
||||
then
|
||||
|
||||
$as_echo "#define DOUBLE_IS_LITTLE_ENDIAN_IEEE754 1" >>confdefs.h
|
||||
|
||||
fi
|
||||
|
||||
{ $as_echo "$as_me:${as_lineno-$LINENO}: checking whether C doubles are big-endian IEEE 754 binary64" >&5
|
||||
$as_echo_n "checking whether C doubles are big-endian IEEE 754 binary64... " >&6; }
|
||||
if ${ac_cv_big_endian_double+:} false; then :
|
||||
$as_echo_n "(cached) " >&6
|
||||
else
|
||||
|
||||
if test "$cross_compiling" = yes; then :
|
||||
ac_cv_big_endian_double=no
|
||||
else
|
||||
cat confdefs.h - <<_ACEOF >conftest.$ac_ext
|
||||
/* end confdefs.h. */
|
||||
|
||||
#include <string.h>
|
||||
int main() {
|
||||
double x = 9006104071832581.0;
|
||||
if (memcmp(&x, "\x43\x3f\xff\x01\x02\x03\x04\x05", 8) == 0)
|
||||
return 0;
|
||||
else
|
||||
return 1;
|
||||
}
|
||||
|
||||
_ACEOF
|
||||
if ac_fn_c_try_run "$LINENO"; then :
|
||||
ac_cv_big_endian_double=yes
|
||||
else
|
||||
ac_cv_big_endian_double=no
|
||||
fi
|
||||
rm -f core *.core core.conftest.* gmon.out bb.out conftest$ac_exeext \
|
||||
conftest.$ac_objext conftest.beam conftest.$ac_ext
|
||||
rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
|
||||
fi
|
||||
{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ax_cv_c_float_words_bigendian" >&5
|
||||
$as_echo "$ax_cv_c_float_words_bigendian" >&6; }
|
||||
|
||||
fi
|
||||
case $ax_cv_c_float_words_bigendian in
|
||||
yes)
|
||||
|
||||
{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_big_endian_double" >&5
|
||||
$as_echo "$ac_cv_big_endian_double" >&6; }
|
||||
if test "$ac_cv_big_endian_double" = yes
|
||||
$as_echo "#define FLOAT_WORDS_BIGENDIAN 1" >>confdefs.h
|
||||
;;
|
||||
no)
|
||||
;;
|
||||
*)
|
||||
as_fn_error $? "
|
||||
|
||||
Unknown float word ordering. You need to manually preset
|
||||
ax_cv_c_float_words_bigendian=no (or yes) according to your system.
|
||||
|
||||
" "$LINENO" 5 ;;
|
||||
esac
|
||||
|
||||
|
||||
if test "$ax_cv_c_float_words_bigendian" = "yes"
|
||||
then
|
||||
|
||||
$as_echo "#define DOUBLE_IS_BIG_ENDIAN_IEEE754 1" >>confdefs.h
|
||||
|
||||
fi
|
||||
|
||||
# Some ARM platforms use a mixed-endian representation for doubles.
|
||||
# While Python doesn't currently have full support for these platforms
|
||||
# (see e.g., issue 1762561), we can at least make sure that float <-> string
|
||||
# conversions work.
|
||||
{ $as_echo "$as_me:${as_lineno-$LINENO}: checking whether C doubles are ARM mixed-endian IEEE 754 binary64" >&5
|
||||
$as_echo_n "checking whether C doubles are ARM mixed-endian IEEE 754 binary64... " >&6; }
|
||||
if ${ac_cv_mixed_endian_double+:} false; then :
|
||||
$as_echo_n "(cached) " >&6
|
||||
else
|
||||
|
||||
if test "$cross_compiling" = yes; then :
|
||||
ac_cv_mixed_endian_double=no
|
||||
else
|
||||
cat confdefs.h - <<_ACEOF >conftest.$ac_ext
|
||||
/* end confdefs.h. */
|
||||
|
||||
#include <string.h>
|
||||
int main() {
|
||||
double x = 9006104071832581.0;
|
||||
if (memcmp(&x, "\x01\xff\x3f\x43\x05\x04\x03\x02", 8) == 0)
|
||||
return 0;
|
||||
else
|
||||
return 1;
|
||||
}
|
||||
|
||||
_ACEOF
|
||||
if ac_fn_c_try_run "$LINENO"; then :
|
||||
ac_cv_mixed_endian_double=yes
|
||||
else
|
||||
ac_cv_mixed_endian_double=no
|
||||
fi
|
||||
rm -f core *.core core.conftest.* gmon.out bb.out conftest$ac_exeext \
|
||||
conftest.$ac_objext conftest.beam conftest.$ac_ext
|
||||
fi
|
||||
|
||||
fi
|
||||
|
||||
{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_mixed_endian_double" >&5
|
||||
$as_echo "$ac_cv_mixed_endian_double" >&6; }
|
||||
if test "$ac_cv_mixed_endian_double" = yes
|
||||
elif test "$ax_cv_c_float_words_bigendian" = "no"
|
||||
then
|
||||
|
||||
$as_echo "#define DOUBLE_IS_LITTLE_ENDIAN_IEEE754 1" >>confdefs.h
|
||||
|
||||
else
|
||||
# Some ARM platforms use a mixed-endian representation for doubles.
|
||||
# While Python doesn't currently have full support for these platforms
|
||||
# (see e.g., issue 1762561), we can at least make sure that float <-> string
|
||||
# conversions work.
|
||||
# FLOAT_WORDS_BIGENDIAN doesnt actually detect this case, but if it's not big
|
||||
# or little, then it must be this?
|
||||
|
||||
$as_echo "#define DOUBLE_IS_ARM_MIXED_ENDIAN_IEEE754 1" >>confdefs.h
|
||||
|
||||
fi
|
||||
|
|
|
|||
|
|
@ -30,6 +30,10 @@
|
|||
/* Define if --enable-ipv6 is specified */
|
||||
#undef ENABLE_IPV6
|
||||
|
||||
/* Define to 1 if your system stores words within floats with the most
|
||||
significant word first */
|
||||
#undef FLOAT_WORDS_BIGENDIAN
|
||||
|
||||
/* Define if flock needs to be linked with bsd library. */
|
||||
#undef FLOCK_NEEDS_LIBBSD
|
||||
|
||||
|
|
|
|||
Loading…
Reference in New Issue