8000 Update libmpdec-related instructions by skirpichev · Pull Request #1598 · python/devguide · GitHub
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Update libmpdec-related instructions #1598

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Update libmpdec-related instructions #1598

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3f00b21
Update libmpdec-related instructions
skirpichev Jul 2, 2025
857fc7c
Update getting-started/setup-building.rst
skirpichev Jul 6, 2025
891b636
Recommend system libmpdec
skirpichev Jul 6, 2025
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9 changes: 6 additions & 3 deletions getting-started/setup-building.rst
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Expand Up @@ -781,8 +781,12 @@ some of CPython's modules (for example, ``zlib``).
libncurses5-dev libreadline6-dev libsqlite3-dev libssl-dev \
lzma lzma-dev tk-dev uuid-dev zlib1g-dev libmpdec-dev libzstd-dev

Note that Debian 12 and Ubuntu 24.04 do not have the ``libmpdec-dev`` package. You can safely
remove it from the install list above and the Python build will use a bundled version.
Note that Debian 12 and Ubuntu 24.04 do not have the ``libmpdec-dev``
package. You can safely remove it from the install list above and the
Python build will use a bundled version. But we recommend using the system
`libmpdec <https://www.bytereef.org/mpdecimal/doc/libmpdec/>`_ library.
Either built it from sources or install this package from
https://deb.sury.org.

.. tab:: macOS

Expand Down Expand Up @@ -823,7 +827,6 @@ some of CPython's modules (for example, ``zlib``).
$ GDBM_CFLAGS="-I$(brew --prefix gdbm)/include" \
GDBM_LIBS="-L$(brew --prefix gdbm)/lib -lgdbm" \
./configure --with-pydebug \
--with-system-libmpdec \
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Confirmed builds and tests pass on macOS without this for 3.13/3.14/main.

--with-openssl="$(brew --prefix openssl@3)"

.. tab:: Python 3.11-3.12
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