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gh-95957: Add instructions for Tcl/Tk and OpenSSL on RHEL/CentOS 7 (#95964)
Co-authored-by: Erlend E. Aasland <erlend.aasland@protonmail.com>
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@ -1644,16 +1644,23 @@ Build Changes
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* Build dependencies, compiler flags, and linker flags for most stdlib
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extension modules are now detected by :program:`configure`. libffi, libnsl,
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libsqlite3, zlib, bzip2, liblzma, libcrypt, Tcl/Tk libs, and uuid flags
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are detected by ``pkg-config`` (when available).
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libsqlite3, zlib, bzip2, liblzma, libcrypt, Tcl/Tk, and uuid flags
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are detected by ``pkg-config`` (when available). :mod:`tkinter` now
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requires ``pkg-config`` command to detect development settings for Tcl/Tk
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headers and libraries.
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(Contributed by Christian Heimes and Erlend Egeberg Aasland in
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:issue:`45847`, :issue:`45747`, and :issue:`45763`.)
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.. note::
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Use the environment variables ``TCLTK_CFLAGS`` and ``TCLTK_LIBS`` to
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manually specify the location of Tcl/Tk headers and libraries.
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The :program:`configure` options ``--with-tcltk-includes`` and
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``--with-tcltk-libs`` have been removed.
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Use the environment variables :envvar:`TCLTK_CFLAGS` and
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:envvar:`TCLTK_LIBS` to manually specify the location of Tcl/Tk headers
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and libraries. The :program:`configure` options ``--with-tcltk-includes``
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and ``--with-tcltk-libs`` have been removed.
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On RHEL 7 and CentOS 7 the development packages do not provide ``tcl.pc``
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and ``tk.pc``, use :envvar:`TCLTK_LIBS="-ltk8.5 -ltkstub8.5 -ltcl8.5"`.
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The directory ``Misc/rhel7`` contains ``.pc`` files and instructions
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how to build Python with RHEL 7's and CentOS 7's Tcl/Tk and OpenSSL.
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* CPython now has :pep:`11` tier 3 support for cross compiling to WebAssembly
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platform ``wasm32-unknown-emscripten`` (Python in the browser). The effort
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@ -0,0 +1,2 @@
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What's New 3.11 now has instructions for how to provide compiler and
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linker flags for Tcl/Tk and OpenSSL on RHEL 7 and CentOS 7.
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Misc/rhel7/README.md
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Misc/rhel7/README.md
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# pkg-config overrides for RHEL 7 and CentOS 7
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RHEL 7 and CentOS 7 do not provide pkg-config `.pc` files for Tcl/Tk. The
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OpenSSL 1.1.1 pkg-config file is named `openssl11.pc` and not picked up
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by Python's `configure` script.
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To build Python with system Tcl/Tk libs and OpenSSL 1.1 package, first
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install the developer packages and the `pkgconfig` package with `pkg-config`
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command.
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```shell
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sudo yum install pkgconfig 'tcl-devel >= 8.5.12' 'tk-devel >= 8.5.12' openssl11-devel
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```
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The run `configure` with `PKG_CONFIG_PATH` environment variable.
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```shell
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PKG_CONFIG_PATH=Misc/rhel7 ./configure -C
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```
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Misc/rhel7/openssl.pc
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Misc/rhel7/openssl.pc
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Name: OpenSSL
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Version: 1.1.1k
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Requires: libssl11 libcrypto11
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Misc/rhel7/tcl.pc
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Misc/rhel7/tcl.pc
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Name: Tool Command Language
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Version: 8.5.12
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Libs: -ltcl8.5 -ltclstub8.5
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# Libs.private: -ldl -lz -lpthread -lm
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Misc/rhel7/tk.pc
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Misc/rhel7/tk.pc
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Name: The Tk Toolkit
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Version: 8.5.12
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Requires: tcl >= 8.5.12
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Libs: -ltk8.5 -ltkstub8.5
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# Libs.private: -lXft -lfontconfig -lfreetype -lfontconfig -lX11
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