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package/python3: drop !uclibc || headers 5.1 dependency

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The following dependency:

  depends on !BR2_TOOLCHAIN_USES_UCLIBC || BR2_TOOLCHAIN_HEADERS_AT_LEAST_5_1

was added by commit d63e207eb8, which
bumped python3 from 3.12.9 to 3.13.2.

The commit message doesn't state it, but this dependency was introduced
because uClibc without time64 support (i.e. with kernel headers < 5.1)
causes a runtime assertion in Python [1]:

OverflowError: timestamp too large to convert to C PyTime_t

The problem is that this dependency has not been propagated to reverse
dependencies, causing this kind of kconfig warnings:

WARNING: unmet direct dependencies detected for BR2_PACKAGE_PYTHON3
  Depends on [n]: BR2_USE_WCHAR [=y] && BR2_USE_MMU [=y] && BR2_TOOLCHAIN_HAS_THREADS [=y] && !BR2_STATIC_LIBS [=n] && (!BR2_TOOLCHAIN_USES_UCLIBC [=y] || BR2_TOOLCHAIN_HEADERS_AT_LEAST_5_1 [=n])
  Selected by [y]:
  - BR2_PACKAGE_AVOCADO [=y] && BR2_USE_WCHAR [=y] && BR2_USE_MMU [=y] && BR2_TOOLCHAIN_HAS_THREADS [=y] && !BR2_STATIC_LIBS [=n]
  - BR2_PACKAGE_LIBSIGROKDECODE [=y] && BR2_USE_WCHAR [=y] && BR2_TOOLCHAIN_HAS_THREADS [=y] && BR2_USE_MMU [=y] && !BR2_STATIC_LIBS [=n]
  - BR2_PACKAGE_OPKG_UTILS [=y] && BR2_PACKAGE_BUSYBOX [=y] && BR2_USE_MMU [=y] && BR2_USE_WCHAR [=y] && BR2_TOOLCHAIN_HAS_THREADS [=y] && !BR2_STATIC_LIBS [=n]

However, propagating this dependency to all reverse dependencies of
python3 would be pretty annoying, especially as the dependency is kind
of "clunky". A configuration with uClibc and kernel headers < 5.1 is
such a corner case that it does not merit such complexity.

A later commit will check for this corner case at build time (while
allowing it in the .config). For now, already drop the dependency in
Config.in.

Cc: Vincent Fazio <vfazio@xes-inc.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
Signed-off-by: Arnout Vandecappelle <arnout@rnout.be>

[1] https://gitlab.com/buildroot.org/buildroot/-/issues/95#note_2348479811
This commit is contained in:
Thomas Petazzoni
2025-08-18 22:14:43 +02:00
committed by Arnout Vandecappelle
parent ba24015307
commit ffd0028031
1 changed files with 2 additions and 3 deletions
Download Patch File Download Diff File Expand all files Collapse all files

5
package/python3/Config.in
View File

@@ -1,6 +1,6 @@
comment "python3 needs a toolchain w/ wchar, threads, dynamic library, time64 support"
comment "python3 needs a toolchain w/ wchar, threads, dynamic library"
depends on BR2_USE_MMU
depends on !BR2_USE_WCHAR || !BR2_TOOLCHAIN_HAS_THREADS || BR2_STATIC_LIBS || (!BR2_TOOLCHAIN_HEADERS_AT_LEAST_5_1 && BR2_TOOLCHAIN_USES_UCLIBC)
depends on !BR2_USE_WCHAR || !BR2_TOOLCHAIN_HAS_THREADS || BR2_STATIC_LIBS
config BR2_PACKAGE_PYTHON3
bool "python3"
@@ -9,7 +9,6 @@ config BR2_PACKAGE_PYTHON3
depends on BR2_USE_MMU
depends on BR2_TOOLCHAIN_HAS_THREADS # libffi
depends on !BR2_STATIC_LIBS
depends on !BR2_TOOLCHAIN_USES_UCLIBC || BR2_TOOLCHAIN_HEADERS_AT_LEAST_5_1 # need time64 support in uclibc
select BR2_PACKAGE_LIBFFI
select BR2_PACKAGE_BLUEZ5_UTILS_HEADERS if BR2_PACKAGE_BLUEZ5_UTILS
select BR2_PACKAGE_HOST_PYTHON3