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bpo-36721: Add --embed option to python-config (GH-13500)

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To embed Python into an application, a new --embed option must be
passed to "python3-config --libs --embed" to get "-lpython3.8" (link
the application to libpython). To support both 3.8 and older, try
"python3-config --libs --embed" first and fallback to "python3-config
--libs" (without --embed) if the previous command fails.

Add a pkg-config "python-3.8-embed" module to embed Python into an
application: "pkg-config python-3.8-embed --libs" includes
"-lpython3.8".  To support both 3.8 and older, try "pkg-config
python-X.Y-embed --libs" first and fallback to "pkg-config python-X.Y
--libs" (without --embed) if the previous command fails (replace
"X.Y" with the Python version).

On the other hand, "pkg-config python3.8 --libs" no longer contains
"-lpython3.8". C extensions must not be linked to libpython (except
on Android, case handled by the script); this change is backward
incompatible on purpose.

"make install" now also installs "python-3.8-embed.pc".
This commit is contained in:
Victor Stinner 2019-05-23 03:30:23 +02:00 • committed by GitHub
parent ef5bb25e2d
commit 0a8e57248b
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10 changed files with 78 additions and 9 deletions
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# See: man pkg-config
prefix=@prefix@
exec_prefix=@exec_prefix@
libdir=@libdir@
includedir=@includedir@
Name: Python
Description: Embed Python into an application
Requires:
Version: @VERSION@
Libs.private: @LIBS@
Libs: -L${libdir} -lpython@VERSION@@ABIFLAGS@
Cflags: -I${includedir}/python@VERSION@@ABIFLAGS@