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