diff options
Diffstat (limited to 'configure.ac')
| -rw-r--r-- | configure.ac | 101 |
1 files changed, 91 insertions, 10 deletions
diff --git a/configure.ac b/configure.ac index 5525a5b0ed5..eb52365d95b 100644 --- a/configure.ac +++ b/configure.ac @@ -2776,7 +2776,7 @@ AS_VAR_IF([jit_flags], [], [AS_VAR_APPEND([CFLAGS_NODIST], [" $jit_flags"]) AS_VAR_SET([REGEN_JIT_COMMAND], - ["\$(PYTHON_FOR_REGEN) \$(srcdir)/Tools/jit/build.py ${ARCH_TRIPLES:-$host}"]) + ["\$(PYTHON_FOR_REGEN) \$(srcdir)/Tools/jit/build.py ${ARCH_TRIPLES:-$host} --output-dir . --pyconfig-dir ."]) AS_VAR_SET([JIT_STENCILS_H], ["jit_stencils.h"]) AS_VAR_IF([Py_DEBUG], [true], @@ -3740,15 +3740,17 @@ dnl check for uuid dependencies AH_TEMPLATE([HAVE_UUID_H], [Define to 1 if you have the <uuid.h> header file.]) AH_TEMPLATE([HAVE_UUID_UUID_H], [Define to 1 if you have the <uuid/uuid.h> header file.]) AH_TEMPLATE([HAVE_UUID_GENERATE_TIME_SAFE], [Define if uuid_generate_time_safe() exists.]) +AH_TEMPLATE([HAVE_UUID_GENERATE_TIME_SAFE_STABLE_MAC], [Define if uuid_generate_time_safe() is able to deduce a MAC address.]) have_uuid=missing dnl AIX provides support for RFC4122 (uuid) in libc.a starting with AIX 6.1 dnl (anno 2007). FreeBSD and OpenBSD provides support in libc as well. dnl Little-endian FreeBSD, OpenBSD and NetBSD needs encoding into an octet dnl stream in big-endian byte-order -AC_CHECK_HEADERS([uuid.h], - [AC_CHECK_FUNCS([uuid_create uuid_enc_be], - [have_uuid=yes +AC_CHECK_HEADERS([uuid.h], [ + AC_CHECK_FUNCS([uuid_create uuid_enc_be], [ + have_uuid=yes + ac_cv_have_uuid_h=yes LIBUUID_CFLAGS=${LIBUUID_CFLAGS-""} LIBUUID_LIBS=${LIBUUID_LIBS-""} ]) @@ -3758,19 +3760,29 @@ AS_VAR_IF([have_uuid], [missing], [ PKG_CHECK_MODULES( [LIBUUID], [uuid >= 2.20], [dnl linux-util's libuuid has uuid_generate_time_safe() since v2.20 (2011) - dnl and provides <uuid.h>. + dnl and provides <uuid.h> assuming specific include paths are given have_uuid=yes - AC_DEFINE([HAVE_UUID_H], [1]) - AC_DEFINE([HAVE_UUID_GENERATE_TIME_SAFE], [1]) + ac_cv_have_uuid_generate_time_safe=yes + # The uuid.h file to include may be <uuid.h> *or* <uuid/uuid.h>. + # Since pkg-config --cflags uuid may return -I/usr/include/uuid, + # it's possible to write '#include <uuid.h>' in _uuidmodule.c, + # assuming that the compiler flags are properly updated. + # + # Ideally, we should have defined HAVE_UUID_H if and only if + # #include <uuid.h> can be written, *without* assuming extra + # include path. + ac_cv_have_uuid_h=yes ], [ WITH_SAVE_ENV([ CPPFLAGS="$CPPFLAGS $LIBUUID_CFLAGS" LIBS="$LIBS $LIBUUID_LIBS" AC_CHECK_HEADERS([uuid/uuid.h], [ + ac_cv_have_uuid_uuid_h=yes PY_CHECK_LIB([uuid], [uuid_generate_time], [have_uuid=yes]) - PY_CHECK_LIB([uuid], [uuid_generate_time_safe], - [have_uuid=yes - AC_DEFINE([HAVE_UUID_GENERATE_TIME_SAFE], [1]) ]) ]) + PY_CHECK_LIB([uuid], [uuid_generate_time_safe], [ + have_uuid=yes + ac_cv_have_uuid_generate_time_safe=yes + ])]) AS_VAR_IF([have_uuid], [yes], [ LIBUUID_CFLAGS=${LIBUUID_CFLAGS-""} LIBUUID_LIBS=${LIBUUID_LIBS-"-luuid"} @@ -3785,12 +3797,19 @@ AS_VAR_IF([have_uuid], [missing], [ AC_CHECK_HEADERS([uuid/uuid.h], [ AC_CHECK_FUNC([uuid_generate_time], [ have_uuid=yes + ac_cv_have_uuid_uuid_h=yes LIBUUID_CFLAGS=${LIBUUID_CFLAGS-""} LIBUUID_LIBS=${LIBUUID_LIBS-""} ]) ]) ]) +AS_VAR_IF([ac_cv_have_uuid_h], [yes], [AC_DEFINE([HAVE_UUID_H], [1])]) +AS_VAR_IF([ac_cv_have_uuid_uuid_h], [yes], [AC_DEFINE([HAVE_UUID_UUID_H], [1])]) +AS_VAR_IF([ac_cv_have_uuid_generate_time_safe], [yes], [ + AC_DEFINE([HAVE_UUID_GENERATE_TIME_SAFE], [1]) +]) + # gh-124228: While the libuuid library is available on NetBSD, it supports only UUID version 4. # This restriction inhibits the proper generation of time-based UUIDs. if test "$ac_sys_system" = "NetBSD"; then @@ -3800,6 +3819,68 @@ fi AS_VAR_IF([have_uuid], [missing], [have_uuid=no]) +# gh-132710: The UUID node is fetched by using libuuid when possible +# and cached. While the node is constant within the same process, +# different interpreters may have different values as libuuid may +# randomize the node value if the latter cannot be deduced. +# +# Consumers may define HAVE_UUID_GENERATE_TIME_SAFE_STABLE_MAC +# to indicate that libuuid is unstable and should not be relied +# upon to deduce the MAC address. +AC_DEFUN([PY_EXTRACT_UUID_GENERATE_TIME_SAFE_MAC], [WITH_SAVE_ENV([ + # Be sure to add the extra include path if we used pkg-config + # as HAVE_UUID_H may be set even though <uuid.h> is only reachable + # by adding extra -I flags. + # + # If the following script does not compile, we simply assume that + # libuuid is missing. + CFLAGS="$CFLAGS $LIBUUID_CFLAGS" + LIBS="$LIBS $LIBUUID_LIBS" + AC_RUN_IFELSE([AC_LANG_SOURCE([[ + #include <inttypes.h> // PRIu64 + #include <stdint.h> // uint64_t + #include <stdio.h> // fopen(), fclose() + + #ifdef HAVE_UUID_H + #include <uuid.h> + #else + #include <uuid/uuid.h> + #endif + + #define ERR 1 + int main(void) { + uuid_t uuid; // unsigned char[16] + (void)uuid_generate_time_safe(uuid); + uint64_t node = 0; + for (size_t i = 0; i < 6; i++) { + node |= (uint64_t)uuid[15 - i] << (8 * i); + } + FILE *fp = fopen("conftest.out", "w"); + if (fp == NULL) { + return ERR; + } + int rc = fprintf(fp, "%" PRIu64 "\n", node) >= 0; + rc |= fclose(fp); + return rc == 0 ? 0 : ERR; + }]])], [ + AS_VAR_SET([$1], [`cat conftest.out`]) + ], [], [] + )])]) + +if test "$have_uuid" = "yes" -a "$HAVE_UUID_GENERATE_TIME_SAFE" = "1" +then + AC_MSG_CHECKING([if uuid_generate_time_safe() node value is stable]) + PY_EXTRACT_UUID_GENERATE_TIME_SAFE_MAC([py_cv_uuid_node1]) + PY_EXTRACT_UUID_GENERATE_TIME_SAFE_MAC([py_cv_uuid_node2]) + if test -n "$py_cv_uuid_node1" -a "$py_cv_uuid_node1" = "$py_cv_uuid_node2" + then + AC_DEFINE([HAVE_UUID_GENERATE_TIME_SAFE_STABLE_MAC], [1]) + AC_MSG_RESULT([stable]) + else + AC_MSG_RESULT([unstable]) + fi +fi + # 'Real Time' functions on Solaris # posix4 on Solaris 2.6 # pthread (first!) on Linux |