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gh-115119: Remove implicit fallback to the bundled libmpdec (#134078)

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Co-authored-by: Victor Stinner <vstinner@python.org>
Co-authored-by: Hugo van Kemenade <1324225+hugovk@users.noreply.github.com>
This commit is contained in:
Sergey B Kirpichev
2025-07-01 18:50:51 +03:00
committed by GitHub
parent 93809a918f
commit 17cf0a343b
5 changed files with 59 additions and 47 deletions
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44
configure.ac
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@@ -4169,22 +4169,22 @@ fi
# Check for use of the system libmpdec library
AC_MSG_CHECKING([for --with-system-libmpdec])
AC_ARG_WITH(
[system_libmpdec],
[AS_HELP_STRING(
[--with-system-libmpdec],
[build _decimal module using an installed mpdecimal library, see Doc/library/decimal.rst (default is yes)]
)],
[],
[with_system_libmpdec="yes"])
AC_MSG_RESULT([$with_system_libmpdec])
AC_DEFUN([USE_BUNDLED_LIBMPDEC],
[LIBMPDEC_CFLAGS="-I\$(srcdir)/Modules/_decimal/libmpdec"
LIBMPDEC_LIBS="-lm \$(LIBMPDEC_A)"
LIBMPDEC_INTERNAL="\$(LIBMPDEC_HEADERS) \$(LIBMPDEC_A)"
have_mpdec=yes
with_system_libmpdec=no])
AC_ARG_WITH(
[system_libmpdec],
[AS_HELP_STRING(
[--with-system-libmpdec],
[build _decimal module using an installed mpdecimal library, see Doc/library/decimal.rst (default is yes)]
)],
[AS_IF([test "x$with_system_libmpdec" = xno],
[USE_BUNDLED_LIBMPDEC()])],
[with_system_libmpdec="yes"])
AC_MSG_RESULT([$with_system_libmpdec])
AS_VAR_IF(
[with_system_libmpdec], [yes],
@@ -4192,8 +4192,7 @@ AS_VAR_IF(
[LIBMPDEC], [libmpdec >= 2.5.0], [],
[LIBMPDEC_CFLAGS=${LIBMPDEC_CFLAGS-""}
LIBMPDEC_LIBS=${LIBMPDEC_LIBS-"-lmpdec -lm"}
LIBMPDEC_INTERNAL=])],
[USE_BUNDLED_LIBMPDEC()])
LIBMPDEC_INTERNAL=])])
AS_VAR_IF([with_system_libmpdec], [yes],
[WITH_SAVE_ENV([
@@ -4209,16 +4208,7 @@ AS_VAR_IF([with_system_libmpdec], [yes],
], [const char *x = mpd_version();])],
[have_mpdec=yes],
[have_mpdec=no])
])],
[AC_MSG_WARN([m4_normalize([
the bundled copy of libmpdecimal is scheduled for removal in Python 3.15;
consider using a system installed mpdecimal library.])])])
AS_IF([test "$with_system_libmpdec" = "yes" && test "$have_mpdec" = "no"],
[AC_MSG_WARN([m4_normalize([
no system libmpdecimal found; falling back to bundled libmpdecimal
(deprecated and scheduled for removal in Python 3.15)])])
USE_BUNDLED_LIBMPDEC()])
])])
# Disable forced inlining in debug builds, see GH-94847
AS_VAR_IF(
@@ -8136,6 +8126,16 @@ PY_STDLIB_MOD([_curses_panel],
PY_STDLIB_MOD([_decimal],
[], [test "$have_mpdec" = "yes"],
[$LIBMPDEC_CFLAGS], [$LIBMPDEC_LIBS])
AS_VAR_IF([with_system_libmpdec], [no],
[AC_MSG_WARN([m4_normalize([
the bundled copy of libmpdecimal is scheduled for removal in Python 3.16;
consider using a system installed mpdecimal library.])])])
AS_IF([test "$with_system_libmpdec" = "yes" && test "$have_mpdec" = "no"],
[AC_MSG_WARN([m4_normalize([
no system libmpdecimal found; falling back to pure-Python version
for the decimal module])])])
PY_STDLIB_MOD([_dbm],
[test -n "$with_dbmliborder"], [test "$have_dbm" != "no"],
[$DBM_CFLAGS], [$DBM_LIBS])