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package/util-linux: fix non-MMU build

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Buildroot commit 31af509b4f bumped the
package from 2.40.2 to 2.41.1. This bump includes upstream commit
a3f1255f18
which was added to version 2.41 and includes the usage of
pthread_atfork() causing build errors on non-MMU platforms:

libuuid/src/gen_uuid.c: In function 'uuid_generate_time_generic':
libuuid/src/gen_uuid.c:629:17: error: implicit declaration of function
 'pthread_atfork'; did you mean 'pthread_join'?
 [-Wimplicit-function-declaration]
  629 |                 pthread_atfork(NULL, NULL, reset_uuidd_cache);

The oldest build error of this kind can be found on the 2025.11.x
branch with version 2.41.1:
https://autobuild.buildroot.net/results/87c/87c74435be14956fd45f730269eac102e70d56da/

The issue occurs because uClibc-ng is not very consistent with its
pthread_atfork() definition: it doesn't provide a prototype for it on
!MMU platforms (causing the build failure), but it does provide a stub
implementation (causing the configure script to believe pthread_atfork
is available). This issue was reported to upstream uClibc-ng at
https://mailman.openadk.org/mailman3/hyperkitty/list/devel@uclibc-ng.org/thread/WEA7IQC3YAWTSFDHCLYRQJZTC4IUIY7J/.

A backport of this patch to the LTS branches should be considered, but
probably not 2025.02.x as it uses version 2.40.x.

Fixes:
https://autobuild.buildroot.org/results/a21e81e64eccc866b575a4f3b1376c50f2ffd837/

Signed-off-by: Bernd Kuhls <bernd@kuhls.net>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
(cherry picked from commit d42fa91227)
Signed-off-by: Raphaël Mélotte <raphael.melotte@mind.be>
This commit is contained in:
Bernd Kuhls
2026-04-26 12:22:15 +02:00
committed by Raphaël Mélotte
parent deb11f1c6d
commit 19cb3b1e50
1 changed files with 5 additions and 0 deletions
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5
package/util-linux/util-linux.mk
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@@ -136,6 +136,11 @@ UTIL_LINUX_CONF_ENV += CFLAGS="$(TARGET_CFLAGS) -Dstatic_assert=_Static_assert"
UTIL_LINUX_CONF_ENV += LIBS="$(UTIL_LINUX_LINK_LIBS)"
UTIL_LINUX_MAKE_OPTS += LIBS="$(UTIL_LINUX_LINK_LIBS)"
# pthread support uses pthread_atfork, which is not available on nommu
ifeq ($(BR2_USE_MMU),)
UTIL_LINUX_CONF_ENV += ac_cv_lib_pthread_pthread_atfork=no
endif
ifeq ($(BR2_PACKAGE_LIBSELINUX),y)
UTIL_LINUX_DEPENDENCIES += libselinux
UTIL_LINUX_CONF_OPTS += --with-selinux