[Python-checkins] gh-90539: doc: Expand on what should not go into CFLAGS, LDFLAGS (#92754)
vstinner
webhook-mailer at python.org
Mon Jun 20 09:58:14 EDT 2022
https://github.com/python/cpython/commit/61f24e7885bed096b5d7f75aff13c1001994b35a
commit: 61f24e7885bed096b5d7f75aff13c1001994b35a
branch: main
author: Matthias Köppe <mkoeppe at math.ucdavis.edu>
committer: vstinner <vstinner at python.org>
date: 2022-06-20T15:58:02+02:00
summary:
gh-90539: doc: Expand on what should not go into CFLAGS, LDFLAGS (#92754)
files:
M Doc/using/configure.rst
diff --git a/Doc/using/configure.rst b/Doc/using/configure.rst
index 8cbeb496f2df5..80c0dc08dae73 100644
--- a/Doc/using/configure.rst
+++ b/Doc/using/configure.rst
@@ -749,6 +749,17 @@ Compiler flags
extensions. Use it when a compiler flag should *not* be part of the
distutils :envvar:`CFLAGS` once Python is installed (:issue:`21121`).
+ In particular, :envvar:`CFLAGS` should not contain:
+
+ * the compiler flag `-I` (for setting the search path for include files).
+ The `-I` flags are processed from left to right, and any flags in
+ :envvar:`CFLAGS` would take precedence over user- and package-supplied `-I`
+ flags.
+
+ * hardening flags such as `-Werror` because distributions cannot control
+ whether packages installed by users conform to such heightened
+ standards.
+
.. versionadded:: 3.5
.. envvar:: EXTRA_CFLAGS
@@ -861,6 +872,13 @@ Linker flags
:envvar:`CFLAGS_NODIST`. Use it when a linker flag should *not* be part of
the distutils :envvar:`LDFLAGS` once Python is installed (:issue:`35257`).
+ In particular, :envvar:`LDFLAGS` should not contain:
+
+ * the compiler flag `-L` (for setting the search path for libraries).
+ The `-L` flags are processed from left to right, and any flags in
+ :envvar:`LDFLAGS` would take precedence over user- and package-supplied `-L`
+ flags.
+
.. envvar:: CONFIGURE_LDFLAGS_NODIST
Value of :envvar:`LDFLAGS_NODIST` variable passed to the ``./configure``
More information about the Python-checkins
mailing list