diff options
Diffstat (limited to 'configure')
| -rwxr-xr-x | configure | 472 |
1 files changed, 460 insertions, 12 deletions
@@ -1,5 +1,5 @@ #! /bin/sh -# From configure.in Revision: 71261 . +# From configure.in Revision: 71274 . # Guess values for system-dependent variables and create Makefiles. # Generated by GNU Autoconf 2.61 for python 3.1. # @@ -21603,12 +21603,455 @@ echo "${ECHO_T}default LIBC=\"$LIBC\"" >&6; } fi -# ************************************ -# * Check for mathematical functions * -# ************************************ +# ************************************************** +# * Check for various properties of floating point * +# ************************************************** + +{ echo "$as_me:$LINENO: checking whether C doubles are little-endian IEEE 754 binary64" >&5 +echo $ECHO_N "checking whether C doubles are little-endian IEEE 754 binary64... $ECHO_C" >&6; } +if test "${ac_cv_little_endian_double+set}" = set; then + echo $ECHO_N "(cached) $ECHO_C" >&6 +else + +if test "$cross_compiling" = yes; then + ac_cv_little_endian_double=no +else + cat >conftest.$ac_ext <<_ACEOF +/* confdefs.h. */ +_ACEOF +cat confdefs.h >>conftest.$ac_ext +cat >>conftest.$ac_ext <<_ACEOF +/* end confdefs.h. */ + +#include <string.h> +int main() { + double x = 9006104071832581.0; + if (memcmp(&x, "\x05\x04\x03\x02\x01\xff\x3f\x43", 8) == 0) + return 0; + else + return 1; +} + +_ACEOF +rm -f conftest$ac_exeext +if { (ac_try="$ac_link" +case "(($ac_try" in + *\"* | *\`* | *\\*) ac_try_echo=\$ac_try;; + *) ac_try_echo=$ac_try;; +esac +eval "echo \"\$as_me:$LINENO: $ac_try_echo\"") >&5 + (eval "$ac_link") 2>&5 + ac_status=$? + echo "$as_me:$LINENO: \$? = $ac_status" >&5 + (exit $ac_status); } && { ac_try='./conftest$ac_exeext' + { (case "(($ac_try" in + *\"* | *\`* | *\\*) ac_try_echo=\$ac_try;; + *) ac_try_echo=$ac_try;; +esac +eval "echo \"\$as_me:$LINENO: $ac_try_echo\"") >&5 + (eval "$ac_try") 2>&5 + ac_status=$? + echo "$as_me:$LINENO: \$? = $ac_status" >&5 + (exit $ac_status); }; }; then + ac_cv_little_endian_double=yes +else + echo "$as_me: program exited with status $ac_status" >&5 +echo "$as_me: failed program was:" >&5 +sed 's/^/| /' conftest.$ac_ext >&5 + +( exit $ac_status ) +ac_cv_little_endian_double=no +fi +rm -f core *.core core.conftest.* gmon.out bb.out conftest$ac_exeext conftest.$ac_objext conftest.$ac_ext +fi + + +fi + +{ echo "$as_me:$LINENO: result: $ac_cv_little_endian_double" >&5 +echo "${ECHO_T}$ac_cv_little_endian_double" >&6; } +if test "$ac_cv_little_endian_double" = yes +then + +cat >>confdefs.h <<\_ACEOF +#define DOUBLE_IS_LITTLE_ENDIAN_IEEE754 1 +_ACEOF + +fi + +{ echo "$as_me:$LINENO: checking whether C doubles are big-endian IEEE 754 binary64" >&5 +echo $ECHO_N "checking whether C doubles are big-endian IEEE 754 binary64... $ECHO_C" >&6; } +if test "${ac_cv_big_endian_double+set}" = set; then + echo $ECHO_N "(cached) $ECHO_C" >&6 +else + +if test "$cross_compiling" = yes; then + ac_cv_big_endian_double=no +else + cat >conftest.$ac_ext <<_ACEOF +/* confdefs.h. */ +_ACEOF +cat confdefs.h >>conftest.$ac_ext +cat >>conftest.$ac_ext <<_ACEOF +/* end confdefs.h. */ + +#include <string.h> +int main() { + double x = 9006104071832581.0; + if (memcmp(&x, "\x43\x3f\xff\x01\x02\x03\x04\x05", 8) == 0) + return 0; + else + return 1; +} + +_ACEOF +rm -f conftest$ac_exeext +if { (ac_try="$ac_link" +case "(($ac_try" in + *\"* | *\`* | *\\*) ac_try_echo=\$ac_try;; + *) ac_try_echo=$ac_try;; +esac +eval "echo \"\$as_me:$LINENO: $ac_try_echo\"") >&5 + (eval "$ac_link") 2>&5 + ac_status=$? + echo "$as_me:$LINENO: \$? = $ac_status" >&5 + (exit $ac_status); } && { ac_try='./conftest$ac_exeext' + { (case "(($ac_try" in + *\"* | *\`* | *\\*) ac_try_echo=\$ac_try;; + *) ac_try_echo=$ac_try;; +esac +eval "echo \"\$as_me:$LINENO: $ac_try_echo\"") >&5 + (eval "$ac_try") 2>&5 + ac_status=$? + echo "$as_me:$LINENO: \$? = $ac_status" >&5 + (exit $ac_status); }; }; then + ac_cv_big_endian_double=yes +else + echo "$as_me: program exited with status $ac_status" >&5 +echo "$as_me: failed program was:" >&5 +sed 's/^/| /' conftest.$ac_ext >&5 + +( exit $ac_status ) +ac_cv_big_endian_double=no +fi +rm -f core *.core core.conftest.* gmon.out bb.out conftest$ac_exeext conftest.$ac_objext conftest.$ac_ext +fi + + +fi + +{ echo "$as_me:$LINENO: result: $ac_cv_big_endian_double" >&5 +echo "${ECHO_T}$ac_cv_big_endian_double" >&6; } +if test "$ac_cv_big_endian_double" = yes +then + +cat >>confdefs.h <<\_ACEOF +#define DOUBLE_IS_BIG_ENDIAN_IEEE754 1 +_ACEOF + +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. +{ echo "$as_me:$LINENO: checking whether C doubles are ARM mixed-endian IEEE 754 binary64" >&5 +echo $ECHO_N "checking whether C doubles are ARM mixed-endian IEEE 754 binary64... $ECHO_C" >&6; } +if test "${ac_cv_mixed_endian_double+set}" = set; then + echo $ECHO_N "(cached) $ECHO_C" >&6 +else + +if test "$cross_compiling" = yes; then + ac_cv_mixed_endian_double=no +else + cat >conftest.$ac_ext <<_ACEOF +/* confdefs.h. */ +_ACEOF +cat confdefs.h >>conftest.$ac_ext +cat >>conftest.$ac_ext <<_ACEOF +/* end confdefs.h. */ + +#include <string.h> +int main() { + double x = 9006104071832581.0; + if (memcmp(&x, "\x01\xff\x3f\x43\x05\x04\x03\x02", 8) == 0) + return 0; + else + return 1; +} + +_ACEOF +rm -f conftest$ac_exeext +if { (ac_try="$ac_link" +case "(($ac_try" in + *\"* | *\`* | *\\*) ac_try_echo=\$ac_try;; + *) ac_try_echo=$ac_try;; +esac +eval "echo \"\$as_me:$LINENO: $ac_try_echo\"") >&5 + (eval "$ac_link") 2>&5 + ac_status=$? + echo "$as_me:$LINENO: \$? = $ac_status" >&5 + (exit $ac_status); } && { ac_try='./conftest$ac_exeext' + { (case "(($ac_try" in + *\"* | *\`* | *\\*) ac_try_echo=\$ac_try;; + *) ac_try_echo=$ac_try;; +esac +eval "echo \"\$as_me:$LINENO: $ac_try_echo\"") >&5 + (eval "$ac_try") 2>&5 + ac_status=$? + echo "$as_me:$LINENO: \$? = $ac_status" >&5 + (exit $ac_status); }; }; then + ac_cv_mixed_endian_double=yes +else + echo "$as_me: program exited with status $ac_status" >&5 +echo "$as_me: failed program was:" >&5 +sed 's/^/| /' conftest.$ac_ext >&5 + +( exit $ac_status ) +ac_cv_mixed_endian_double=no +fi +rm -f core *.core core.conftest.* gmon.out bb.out conftest$ac_exeext conftest.$ac_objext conftest.$ac_ext +fi -LIBS_SAVE=$LIBS -LIBS="$LIBS $LIBM" + +fi + +{ echo "$as_me:$LINENO: result: $ac_cv_mixed_endian_double" >&5 +echo "${ECHO_T}$ac_cv_mixed_endian_double" >&6; } +if test "$ac_cv_mixed_endian_double" = yes +then + +cat >>confdefs.h <<\_ACEOF +#define DOUBLE_IS_ARM_MIXED_ENDIAN_IEEE754 1 +_ACEOF + +fi + +# David Gay's code in Python/dtoa.c requires that the FPU uses 53-bit +# rounding; this is a particular problem on x86, where the x87 FPU has +# a default rounding precision of 64 bits. For gcc/x86, we try to fix +# this by: +# +# (1) using the SSE2 instruction set when available (it usually is +# on modern machines) +# (2) using inline assembler to get and set the x87 FPU control word +# otherwise. +# +# On AMD64 (aka x86-64), gcc automatically enables use of SSE2 +# instructions, so we don't bother trying to detect. + +if test "$GCC" = yes && test -n "`$CC -dM -E - </dev/null | grep i386`" +then + # determine whether we're already using the SSE2 instruction set for math + # (e.g., this is true by default on OS X/x86) + { echo "$as_me:$LINENO: checking whether SSE2 instructions are already enabled for math" >&5 +echo $ECHO_N "checking whether SSE2 instructions are already enabled for math... $ECHO_C" >&6; } + if test -n "`$CC -dM -E - </dev/null | grep __SSE2_MATH__`" + then + ac_sse2_enabled=yes + else + ac_sse2_enabled=no + fi + { echo "$as_me:$LINENO: result: $ac_sse2_enabled" >&5 +echo "${ECHO_T}$ac_sse2_enabled" >&6; } + + # if we're not using SSE2 already, we need to either enable it + # (when available), or use inline assembler to get and set the + # 387 control word. + if test $ac_sse2_enabled = no + then + # Check cpuid for SSE2 availability. Bits 25 and 26 of edx tell + # us about SSE and SSE2 respectively. + { echo "$as_me:$LINENO: checking whether SSE2 instructions are available on this CPU" >&5 +echo $ECHO_N "checking whether SSE2 instructions are available on this CPU... $ECHO_C" >&6; } + if test "$cross_compiling" = yes; then + ac_cv_cpu_has_sse2=no +else + cat >conftest.$ac_ext <<_ACEOF +/* confdefs.h. */ +_ACEOF +cat confdefs.h >>conftest.$ac_ext +cat >>conftest.$ac_ext <<_ACEOF +/* end confdefs.h. */ + + int main() { + unsigned int ax, bx, cx, dx, func; + func = 1U; + __asm__ __volatile__ ( + "pushl %%ebx\n\t" /* don't clobber ebx */ + "cpuid\n\t" + "movl %%ebx, %1\n\t" + "popl %%ebx" + : "=a" (ax), "=r" (bx), "=c" (cx), "=d" (dx) + : "a" (func) + : "cc" ); + if ((dx & (1U << 25)) && (dx & (1U << 26))) + return 0; + else + return 1; + } + +_ACEOF +rm -f conftest$ac_exeext +if { (ac_try="$ac_link" +case "(($ac_try" in + *\"* | *\`* | *\\*) ac_try_echo=\$ac_try;; + *) ac_try_echo=$ac_try;; +esac +eval "echo \"\$as_me:$LINENO: $ac_try_echo\"") >&5 + (eval "$ac_link") 2>&5 + ac_status=$? + echo "$as_me:$LINENO: \$? = $ac_status" >&5 + (exit $ac_status); } && { ac_try='./conftest$ac_exeext' + { (case "(($ac_try" in + *\"* | *\`* | *\\*) ac_try_echo=\$ac_try;; + *) ac_try_echo=$ac_try;; +esac +eval "echo \"\$as_me:$LINENO: $ac_try_echo\"") >&5 + (eval "$ac_try") 2>&5 + ac_status=$? + echo "$as_me:$LINENO: \$? = $ac_status" >&5 + (exit $ac_status); }; }; then + ac_cv_cpu_has_sse2=yes +else + echo "$as_me: program exited with status $ac_status" >&5 +echo "$as_me: failed program was:" >&5 +sed 's/^/| /' conftest.$ac_ext >&5 + +( exit $ac_status ) +ac_cv_cpu_has_sse2=no +fi +rm -f core *.core core.conftest.* gmon.out bb.out conftest$ac_exeext conftest.$ac_objext conftest.$ac_ext +fi + + + { echo "$as_me:$LINENO: result: $ac_cv_cpu_has_sse2" >&5 +echo "${ECHO_T}$ac_cv_cpu_has_sse2" >&6; } + + # determine whether gcc accepts options to turn on SSE2 + { echo "$as_me:$LINENO: checking whether $CC accepts -msse2 -mfpmath=sse" >&5 +echo $ECHO_N "checking whether $CC accepts -msse2 -mfpmath=sse... $ECHO_C" >&6; } + ac_save_cc="$CC" + CC="$CC -msse2 -mfpmath=sse" + if test "$cross_compiling" = yes; then + ac_cv_msse2_ok=no +else + cat >conftest.$ac_ext <<_ACEOF +/* confdefs.h. */ +_ACEOF +cat confdefs.h >>conftest.$ac_ext +cat >>conftest.$ac_ext <<_ACEOF +/* end confdefs.h. */ +int main() { return 0; } +_ACEOF +rm -f conftest$ac_exeext +if { (ac_try="$ac_link" +case "(($ac_try" in + *\"* | *\`* | *\\*) ac_try_echo=\$ac_try;; + *) ac_try_echo=$ac_try;; +esac +eval "echo \"\$as_me:$LINENO: $ac_try_echo\"") >&5 + (eval "$ac_link") 2>&5 + ac_status=$? + echo "$as_me:$LINENO: \$? = $ac_status" >&5 + (exit $ac_status); } && { ac_try='./conftest$ac_exeext' + { (case "(($ac_try" in + *\"* | *\`* | *\\*) ac_try_echo=\$ac_try;; + *) ac_try_echo=$ac_try;; +esac +eval "echo \"\$as_me:$LINENO: $ac_try_echo\"") >&5 + (eval "$ac_try") 2>&5 + ac_status=$? + echo "$as_me:$LINENO: \$? = $ac_status" >&5 + (exit $ac_status); }; }; then + ac_cv_msse2_ok=yes +else + echo "$as_me: program exited with status $ac_status" >&5 +echo "$as_me: failed program was:" >&5 +sed 's/^/| /' conftest.$ac_ext >&5 + +( exit $ac_status ) +ac_cv_msse2_ok=no +fi +rm -f core *.core core.conftest.* gmon.out bb.out conftest$ac_exeext conftest.$ac_objext conftest.$ac_ext +fi + + + CC="$ac_save_cc" + { echo "$as_me:$LINENO: result: $ac_cv_msse2_ok" >&5 +echo "${ECHO_T}$ac_cv_msse2_ok" >&6; } + + if test $ac_cv_cpu_has_sse2 = yes && test $ac_cv_msse2_ok = yes + then + BASECFLAGS="$BASECFLAGS -msse2 -mfpmath=sse" + else + # SSE2 doesn't appear to be available. Check that it's okay + # to use gcc inline assembler to get and set x87 control word + +cat >>confdefs.h <<\_ACEOF +#define USING_X87_FPU 1 +_ACEOF + + { echo "$as_me:$LINENO: checking whether we can use gcc inline assembler to get and set x87 control word" >&5 +echo $ECHO_N "checking whether we can use gcc inline assembler to get and set x87 control word... $ECHO_C" >&6; } + cat >conftest.$ac_ext <<_ACEOF +/* confdefs.h. */ +_ACEOF +cat confdefs.h >>conftest.$ac_ext +cat >>conftest.$ac_ext <<_ACEOF +/* end confdefs.h. */ + +int +main () +{ + + unsigned short cw; + __asm__ __volatile__ ("fnstcw %0" : "=m" (cw)); + __asm__ __volatile__ ("fldcw %0" : : "m" (cw)); + + ; + return 0; +} +_ACEOF +rm -f conftest.$ac_objext +if { (ac_try="$ac_compile" +case "(($ac_try" in + *\"* | *\`* | *\\*) ac_try_echo=\$ac_try;; + *) ac_try_echo=$ac_try;; +esac +eval "echo \"\$as_me:$LINENO: $ac_try_echo\"") >&5 + (eval "$ac_compile") 2>conftest.er1 + ac_status=$? + grep -v '^ *+' conftest.er1 >conftest.err + rm -f conftest.er1 + cat conftest.err >&5 + echo "$as_me:$LINENO: \$? = $ac_status" >&5 + (exit $ac_status); } && { + test -z "$ac_c_werror_flag" || + test ! -s conftest.err + } && test -s conftest.$ac_objext; then + have_gcc_asm_for_x87=yes +else + echo "$as_me: failed program was:" >&5 +sed 's/^/| /' conftest.$ac_ext >&5 + + have_gcc_asm_for_x87=no +fi + +rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext + { echo "$as_me:$LINENO: result: $have_gcc_asm_for_x87" >&5 +echo "${ECHO_T}$have_gcc_asm_for_x87" >&6; } + if test "$have_gcc_asm_for_x87" = yes + then + +cat >>confdefs.h <<\_ACEOF +#define HAVE_GCC_ASM_FOR_X87 1 +_ACEOF + + fi + fi + fi +fi # Detect whether system arithmetic is subject to x87-style double # rounding issues. The result of this test has little meaning on non @@ -21617,10 +22060,9 @@ LIBS="$LIBS $LIBM" # 0 otherwise. See http://bugs.python.org/issue2937 for more info. { echo "$as_me:$LINENO: checking for x87-style double rounding" >&5 echo $ECHO_N "checking for x87-style double rounding... $ECHO_C" >&6; } -if test "${ac_cv_x87_double_rounding+set}" = set; then - echo $ECHO_N "(cached) $ECHO_C" >&6 -else - +# $BASECFLAGS may affect the result +ac_save_cc="$CC" +CC="$CC $BASECFLAGS" if test "$cross_compiling" = yes; then ac_cv_x87_double_rounding=no else @@ -21684,8 +22126,7 @@ rm -f core *.core core.conftest.* gmon.out bb.out conftest$ac_exeext conftest.$a fi -fi - +CC="$ac_save_cc" { echo "$as_me:$LINENO: result: $ac_cv_x87_double_rounding" >&5 echo "${ECHO_T}$ac_cv_x87_double_rounding" >&6; } if test "$ac_cv_x87_double_rounding" = yes @@ -21697,6 +22138,13 @@ _ACEOF fi +# ************************************ +# * Check for mathematical functions * +# ************************************ + +LIBS_SAVE=$LIBS +LIBS="$LIBS $LIBM" + # Multiprocessing check for broken sem_getvalue { echo "$as_me:$LINENO: checking for broken sem_getvalue" >&5 echo $ECHO_N "checking for broken sem_getvalue... $ECHO_C" >&6; } |