[Buildroot] [PATCH 1/4] package/util-linux: Remove -lpthread from uuid.pc for non-threaded builds

[Buildroot] [PATCH 1/4] package/util-linux: Remove -lpthread from uuid.pc for non-threaded builds

[Bernd Kuhls]

Buildroot commit 31af509b4f4fe52f67bd9109b8732a55b8f9cd2d bumped
util-linux from version 2.40.2 to 2.41.1.

Upstream release 2.40.3 contains
https://github.com/util-linux/util-linux/commit/e143539d30fd18afb3ba6d3c6e50a260d4219895
which unconditionally adds -lpthread to uuid.pc causing build errors for
other packages using non-threaded toolchains like erofs-utils.

Upstream was notified:
https://github.com/util-linux/util-linux/issues/3210#issuecomment-3477915953

Fixes:
https://autobuild.buildroot.net/results/582/5827995db2a805e0c8a04fde8498eff6f28aa6d8/

Signed-off-by: Bernd Kuhls <bernd@kuhls.net>
---
 package/util-linux/util-linux.mk | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/package/util-linux/util-linux.mk b/package/util-linux/util-linux.mk
index 16d086f333..8c98d80adf 100644
--- a/package/util-linux/util-linux.mk
+++ b/package/util-linux/util-linux.mk
@@ -37,6 +37,13 @@ UTIL_LINUX_LICENSE_FILES = README.licensing \
 
 UTIL_LINUX_CPE_ID_VENDOR = kernel
 
+define UTIL_LINUX_POST_EXTRACT_FIXUP
+	$(SED) 's/-lpthread//' $(@D)/libuuid/uuid.pc.in
+endef
+ifneq ($(BR2_TOOLCHAIN_HAS_THREADS),y)
+UTIL_LINUX_POST_EXTRACT_HOOKS += UTIL_LINUX_POST_EXTRACT_FIXUP
+endif
+
 UTIL_LINUX_INSTALL_STAGING = YES
 UTIL_LINUX_DEPENDENCIES = \
 	host-pkgconf \
-- 
2.47.3

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[Buildroot] [PATCH 2/4] package/util-linux: fix nommu build

[Bernd Kuhls]

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);

Fixes:
https://autobuild.buildroot.net/results/c3d/c3d098dd485bf52b3599e03d22da7b2cd7fb053a/

Signed-off-by: Bernd Kuhls <bernd@kuhls.net>
---
 package/util-linux/util-linux.mk | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/package/util-linux/util-linux.mk b/package/util-linux/util-linux.mk
index 8c98d80adf..40d948ec97 100644
--- a/package/util-linux/util-linux.mk
+++ b/package/util-linux/util-linux.mk
@@ -58,6 +58,11 @@ UTIL_LINUX_CONF_OPTS += \
 	--disable-makeinstall-chown \
 	--disable-year2038
 
+# pthread support uses pthread_atfork, which is not available on nommu
+ifneq ($(BR2_USE_MMU),y)
+UTIL_LINUX_CONF_ENV += ac_cv_lib_pthread_pthread_atfork=no
+endif
+
 UTIL_LINUX_LINK_LIBS = $(TARGET_NLS_LIBS)
 
 HOST_UTIL_LINUX_DEPENDENCIES = host-pkgconf
-- 
2.47.3

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[Buildroot] [PATCH 3/4] package/util-linux: add dependency to BR2_USE_MMU when needed

[Bernd Kuhls]

Upstream added fork() to lib/canonicalize.c in version 2.34[1]
https://github.com/util-linux/util-linux/commit/e101a9eb0fab6725e0a239a92f9b50822c494a3e

but the resulting build errors on non-mmu archs were most likely masked
by previous build errors which are already fixed.

lib/canonicalize.c as part of libcommon is widely used so we need to add
the dependency to many Config.in options.

For an overview about its usage see
output/build/util-linux-2.41.2$ grep -r "LDADD = \$(LDADD) libcommon.la" * | grep Makemodule | cut -d ":" -f 2 | sort

Fixes:
https://autobuild.buildroot.net/results/34b/34b1f733fdfb5c5e30e631576f875398435ad115/

[1] Added to buildroot with commit bb216ed060b16e09b2027ef242347b2f2e3c97dc
    in 2019.

Signed-off-by: Bernd Kuhls <bernd@kuhls.net>
---
 package/linux-tools/Config.in |  2 +-
 package/util-linux/Config.in  | 24 ++++++++++++++++++++++++
 2 files changed, 25 insertions(+), 1 deletion(-)

diff --git a/package/linux-tools/Config.in b/package/linux-tools/Config.in
index 5a38f6dafe..20131b0d9f 100644
--- a/package/linux-tools/Config.in
+++ b/package/linux-tools/Config.in
@@ -150,7 +150,7 @@ comment "rtla needs a toolchain w/ threads, dynamic library"
 config BR2_PACKAGE_LINUX_TOOLS_SELFTESTS
 	bool"selftests"
 	depends on BR2_PACKAGE_BUSYBOX_SHOW_OTHERS # bash
-	depends on BR2_USE_MMU  # bash
+	depends on BR2_USE_MMU  # bash, util-linux-schedutils
 	depends on !BR2_STATIC_LIBS
 	depends on BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_14 # util-linux schedutils
 	select BR2_PACKAGE_LINUX_TOOLS
diff --git a/package/util-linux/Config.in b/package/util-linux/Config.in
index a168abe720..dfebaa0947 100644
--- a/package/util-linux/Config.in
+++ b/package/util-linux/Config.in
@@ -75,11 +75,13 @@ config BR2_PACKAGE_UTIL_LINUX_AGETTY
 
 config BR2_PACKAGE_UTIL_LINUX_BFS
 	bool "bfs"
+	depends on BR2_USE_MMU # fork()
 	help
 	  SCO bfs filesystem support
 
 config BR2_PACKAGE_UTIL_LINUX_CAL
 	bool "cal"
+	depends on BR2_USE_MMU # fork()
 	help
 	  Display a calendar, or some part of it
 
@@ -100,11 +102,13 @@ comment "chfn/chsh needs a toolchain w/ wchar, locale, dynamic library, gcc >= 4
 
 config BR2_PACKAGE_UTIL_LINUX_CHMEM
 	bool "chmem"
+	depends on BR2_USE_MMU # fork()
 	help
 	  Sets a particular size or range of memory online or offline
 
 config BR2_PACKAGE_UTIL_LINUX_CRAMFS
 	bool "cramfs utilities"
+	depends on BR2_USE_MMU # fork()
 	select BR2_PACKAGE_ZLIB
 	help
 	  Utilities for compressed ROM file system (fsck.cramfs,
@@ -121,11 +125,13 @@ config BR2_PACKAGE_UTIL_LINUX_EJECT
 
 config BR2_PACKAGE_UTIL_LINUX_FALLOCATE
 	bool "fallocate"
+	depends on BR2_USE_MMU # fork()
 	help
 	  Preallocate space to a file
 
 config BR2_PACKAGE_UTIL_LINUX_FDFORMAT
 	bool "fdformat"
+	depends on BR2_USE_MMU # fork()
 	help
 	  Low-level format a floppy disk
 
@@ -140,26 +146,31 @@ config BR2_PACKAGE_UTIL_LINUX_FSCK
 
 config BR2_PACKAGE_UTIL_LINUX_HARDLINK
 	bool "hardlink"
+	depends on BR2_USE_MMU # fork()
 	help
 	  Consolidate duplicate files via hardlinks
 
 config BR2_PACKAGE_UTIL_LINUX_HWCLOCK
 	bool "hwclock"
+	depends on BR2_USE_MMU # fork()
 	help
 	  Query or set the hardware clock (RTC)
 
 config BR2_PACKAGE_UTIL_LINUX_IPCMK
 	bool "ipcmk"
+	depends on BR2_USE_MMU # fork()
 	help
 	  Make various IPC resources
 
 config BR2_PACKAGE_UTIL_LINUX_IPCRM
 	bool "ipcrm"
+	depends on BR2_USE_MMU # fork()
 	help
 	  Remove certain IPC resources
 
 config BR2_PACKAGE_UTIL_LINUX_IPCS
 	bool "ipcs"
+	depends on BR2_USE_MMU # fork()
 	help
 	  Show information on IPC facilities
 
@@ -173,11 +184,13 @@ config BR2_PACKAGE_UTIL_LINUX_IRQTOP
 
 config BR2_PACKAGE_UTIL_LINUX_KILL
 	bool "kill"
+	depends on BR2_USE_MMU # fork()
 	help
 	  Send a signal to a process
 
 config BR2_PACKAGE_UTIL_LINUX_LAST
 	bool "last"
+	depends on BR2_USE_MMU # fork()
 	help
 	  Show a listing of last logged in users
 
@@ -188,6 +201,7 @@ config BR2_PACKAGE_UTIL_LINUX_LINE
 
 config BR2_PACKAGE_UTIL_LINUX_LOGGER
 	bool "logger"
+	depends on BR2_USE_MMU # fork()
 	help
 	  Enter messages into the system log
 
@@ -246,6 +260,7 @@ config BR2_PACKAGE_UTIL_LINUX_LSMEM
 
 config BR2_PACKAGE_UTIL_LINUX_MESG
 	bool "mesg"
+	depends on BR2_USE_MMU # fork()
 	help
 	  Control write access to your terminal
 
@@ -288,6 +303,7 @@ config BR2_PACKAGE_UTIL_LINUX_NEWGRP
 
 config BR2_PACKAGE_UTIL_LINUX_NOLOGIN
 	bool "nologin"
+	depends on BR2_USE_MMU # fork()
 	help
 	  Politely refuse a login
 
@@ -333,6 +349,7 @@ comment "raw needs a toolchain w/ headers < 5.14"
 
 config BR2_PACKAGE_UTIL_LINUX_RENAME
 	bool "rename"
+	depends on BR2_USE_MMU # fork()
 	help
 	  Rename files
 
@@ -366,21 +383,25 @@ comment "runuser needs a uClibc or glibc toolchain w/ wchar, locale, dynamic lib
 
 config BR2_PACKAGE_UTIL_LINUX_SCHEDUTILS
 	bool "scheduling utilities"
+	depends on BR2_USE_MMU # fork()
 	depends on BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_14
 	help
 	  Scheduling utilities (chrt, ionice, taskset, uclampset)
 
 comment "scheduling utilities need a toolchain w/ headers >= 3.14"
+	depends on BR2_USE_MMU # fork()
 	depends on !BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_14
 
 config BR2_PACKAGE_UTIL_LINUX_SETPRIV
 	bool "setpriv"
+	depends on BR2_USE_MMU # fork()
 	select BR2_PACKAGE_LIBCAP_NG
 	help
 	  Run a program with different Linux privilege settings
 
 config BR2_PACKAGE_UTIL_LINUX_SETTERM
 	bool "setterm"
+	depends on BR2_USE_MMU # fork()
 	select BR2_PACKAGE_NCURSES
 	help
 	  Set terminal attributes
@@ -417,6 +438,7 @@ config BR2_PACKAGE_UTIL_LINUX_SWITCH_ROOT
 
 config BR2_PACKAGE_UTIL_LINUX_TUNELP
 	bool "tunelp"
+	depends on BR2_USE_MMU # fork()
 	select BR2_PACKAGE_NCURSES
 	help
 	  Set various parameters for the lp device
@@ -435,6 +457,7 @@ config BR2_PACKAGE_UTIL_LINUX_UNSHARE
 
 config BR2_PACKAGE_UTIL_LINUX_UTMPDUMP
 	bool "utmpdump"
+	depends on BR2_USE_MMU # fork()
 	help
 	  Dump UTMP and WTMP files in raw format
 
@@ -489,6 +512,7 @@ config BR2_PACKAGE_UTIL_LINUX_WDCTL
 
 config BR2_PACKAGE_UTIL_LINUX_WRITE
 	bool "write"
+	depends on BR2_USE_MMU # fork()
 	help
 	  Send a message to another user
 
-- 
2.47.3

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[Buildroot] [PATCH 4/4] package/util-linux: bump version to 2.41.3

[Bernd Kuhls]

Release notes:
https://www.kernel.org/pub/linux/utils/util-linux/v2.41/v2.41.3-ReleaseNotes

Signed-off-by: Bernd Kuhls <bernd@kuhls.net>
---
 package/util-linux/util-linux.hash | 2 +-
 package/util-linux/util-linux.mk   | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/package/util-linux/util-linux.hash b/package/util-linux/util-linux.hash
index af850c03d6..eab8a0c3b5 100644
--- a/package/util-linux/util-linux.hash
+++ b/package/util-linux/util-linux.hash
@@ -1,5 +1,5 @@
 # From https://mirrors.edge.kernel.org/pub/linux/utils/util-linux/v2.41/sha256sums.asc
-sha256  6062a1d89b571a61932e6fc0211f36060c4183568b81ee866cf363bce9f6583e  util-linux-2.41.2.tar.xz
+sha256  3330d873f0fceb5560b89a7dc14e4f3288bbd880e96903ed9b50ec2b5799e58b  util-linux-2.41.3.tar.xz
 # License files, locally calculated
 sha256  4c2db318192bda62f3f8fcf71488bb5e602ae4385eba281d711b46cc13a40bb3  README.licensing
 sha256  527f738966ca396cd5a68c1509390de2a780c6b614d9ee57f7544a6161938ed1  Documentation/licenses/COPYING.BSD-2-Clause
diff --git a/package/util-linux/util-linux.mk b/package/util-linux/util-linux.mk
index 40d948ec97..14389254cb 100644
--- a/package/util-linux/util-linux.mk
+++ b/package/util-linux/util-linux.mk
@@ -8,7 +8,7 @@
 # util-linux-libs/util-linux-libs.mk needs to be updated accordingly as well.
 
 UTIL_LINUX_VERSION_MAJOR = 2.41
-UTIL_LINUX_VERSION = $(UTIL_LINUX_VERSION_MAJOR).2
+UTIL_LINUX_VERSION = $(UTIL_LINUX_VERSION_MAJOR).3
 UTIL_LINUX_SOURCE = util-linux-$(UTIL_LINUX_VERSION).tar.xz
 UTIL_LINUX_SITE = $(BR2_KERNEL_MIRROR)/linux/utils/util-linux/v$(UTIL_LINUX_VERSION_MAJOR)
 
-- 
2.47.3

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Re: [Buildroot] [PATCH 1/4] package/util-linux: Remove -lpthread from uuid.pc for non-threaded builds

[Giulio Benetti]

Hi Bernd,

thanks for this patchset,

On 20/12/2025 18:06, Bernd Kuhls wrote:
> Buildroot commit 31af509b4f4fe52f67bd9109b8732a55b8f9cd2d bumped
> util-linux from version 2.40.2 to 2.41.1.
> 
> Upstream release 2.40.3 contains
> https://github.com/util-linux/util-linux/commit/e143539d30fd18afb3ba6d3c6e50a260d4219895
> which unconditionally adds -lpthread to uuid.pc causing build errors for
> other packages using non-threaded toolchains like erofs-utils.
> 
> Upstream was notified:
> https://github.com/util-linux/util-linux/issues/3210#issuecomment-3477915953
> 
> Fixes:
> https://autobuild.buildroot.net/results/582/5827995db2a805e0c8a04fde8498eff6f28aa6d8/
> 
> Signed-off-by: Bernd Kuhls <bernd@kuhls.net>

Reviewed-by: Giulio Benetti <giulio.benetti@benettiengineering.com>

Best regards
Giulio

> ---
>   package/util-linux/util-linux.mk | 7 +++++++
>   1 file changed, 7 insertions(+)
> 
> diff --git a/package/util-linux/util-linux.mk b/package/util-linux/util-linux.mk
> index 16d086f333..8c98d80adf 100644
> --- a/package/util-linux/util-linux.mk
> +++ b/package/util-linux/util-linux.mk
> @@ -37,6 +37,13 @@ UTIL_LINUX_LICENSE_FILES = README.licensing \
>   
>   UTIL_LINUX_CPE_ID_VENDOR = kernel
>   
> +define UTIL_LINUX_POST_EXTRACT_FIXUP
> +	$(SED) 's/-lpthread//' $(@D)/libuuid/uuid.pc.in
> +endef
> +ifneq ($(BR2_TOOLCHAIN_HAS_THREADS),y)
> +UTIL_LINUX_POST_EXTRACT_HOOKS += UTIL_LINUX_POST_EXTRACT_FIXUP
> +endif
> +
>   UTIL_LINUX_INSTALL_STAGING = YES
>   UTIL_LINUX_DEPENDENCIES = \
>   	host-pkgconf \

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Re: [Buildroot] [PATCH 2/4] package/util-linux: fix nommu build

[Giulio Benetti]

Hi Bernd,

thanks,

On 20/12/2025 18:06, Bernd Kuhls wrote:
> 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);
> 
> Fixes:
> https://autobuild.buildroot.net/results/c3d/c3d098dd485bf52b3599e03d22da7b2cd7fb053a/
> 
> Signed-off-by: Bernd Kuhls <bernd@kuhls.net>

nice patch, LGTM so:
Reviewed-by: Giulio Benetti <giulio.benetti@benettiengineering.com>

Best regards
Giulio

> ---
>   package/util-linux/util-linux.mk | 5 +++++
>   1 file changed, 5 insertions(+)
> 
> diff --git a/package/util-linux/util-linux.mk b/package/util-linux/util-linux.mk
> index 8c98d80adf..40d948ec97 100644
> --- a/package/util-linux/util-linux.mk
> +++ b/package/util-linux/util-linux.mk
> @@ -58,6 +58,11 @@ UTIL_LINUX_CONF_OPTS += \
>   	--disable-makeinstall-chown \
>   	--disable-year2038
>   
> +# pthread support uses pthread_atfork, which is not available on nommu
> +ifneq ($(BR2_USE_MMU),y)
> +UTIL_LINUX_CONF_ENV += ac_cv_lib_pthread_pthread_atfork=no
> +endif
> +
>   UTIL_LINUX_LINK_LIBS = $(TARGET_NLS_LIBS)
>   
>   HOST_UTIL_LINUX_DEPENDENCIES = host-pkgconf

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Re: [Buildroot] [PATCH 3/4] package/util-linux: add dependency to BR2_USE_MMU when needed

[Giulio Benetti]

Hi Bernd,

On 20/12/2025 18:06, Bernd Kuhls wrote:
> Upstream added fork() to lib/canonicalize.c in version 2.34[1]
> https://github.com/util-linux/util-linux/commit/e101a9eb0fab6725e0a239a92f9b50822c494a3e
> 
> but the resulting build errors on non-mmu archs were most likely masked
> by previous build errors which are already fixed.
> 
> lib/canonicalize.c as part of libcommon is widely used so we need to add
> the dependency to many Config.in options.
> 
> For an overview about its usage see
> output/build/util-linux-2.41.2$ grep -r "LDADD = \$(LDADD) libcommon.la" * | grep Makemodule | cut -d ":" -f 2 | sort
> 
> Fixes:
> https://autobuild.buildroot.net/results/34b/34b1f733fdfb5c5e30e631576f875398435ad115/
> 
> [1] Added to buildroot with commit bb216ed060b16e09b2027ef242347b2f2e3c97dc
>      in 2019.
> 
> Signed-off-by: Bernd Kuhls <bernd@kuhls.net>

you've preceded me with this, thank you

Reviewed-by: Giulio Benetti <giulio.benetti@benettiengineering.com>

Best regards
Giulio

> ---
>   package/linux-tools/Config.in |  2 +-
>   package/util-linux/Config.in  | 24 ++++++++++++++++++++++++
>   2 files changed, 25 insertions(+), 1 deletion(-)
> 
> diff --git a/package/linux-tools/Config.in b/package/linux-tools/Config.in
> index 5a38f6dafe..20131b0d9f 100644
> --- a/package/linux-tools/Config.in
> +++ b/package/linux-tools/Config.in
> @@ -150,7 +150,7 @@ comment "rtla needs a toolchain w/ threads, dynamic library"
>   config BR2_PACKAGE_LINUX_TOOLS_SELFTESTS
>   	bool"selftests"
>   	depends on BR2_PACKAGE_BUSYBOX_SHOW_OTHERS # bash
> -	depends on BR2_USE_MMU  # bash
> +	depends on BR2_USE_MMU  # bash, util-linux-schedutils
>   	depends on !BR2_STATIC_LIBS
>   	depends on BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_14 # util-linux schedutils
>   	select BR2_PACKAGE_LINUX_TOOLS
> diff --git a/package/util-linux/Config.in b/package/util-linux/Config.in
> index a168abe720..dfebaa0947 100644
> --- a/package/util-linux/Config.in
> +++ b/package/util-linux/Config.in
> @@ -75,11 +75,13 @@ config BR2_PACKAGE_UTIL_LINUX_AGETTY
>   
>   config BR2_PACKAGE_UTIL_LINUX_BFS
>   	bool "bfs"
> +	depends on BR2_USE_MMU # fork()
>   	help
>   	  SCO bfs filesystem support
>   
>   config BR2_PACKAGE_UTIL_LINUX_CAL
>   	bool "cal"
> +	depends on BR2_USE_MMU # fork()
>   	help
>   	  Display a calendar, or some part of it
>   
> @@ -100,11 +102,13 @@ comment "chfn/chsh needs a toolchain w/ wchar, locale, dynamic library, gcc >= 4
>   
>   config BR2_PACKAGE_UTIL_LINUX_CHMEM
>   	bool "chmem"
> +	depends on BR2_USE_MMU # fork()
>   	help
>   	  Sets a particular size or range of memory online or offline
>   
>   config BR2_PACKAGE_UTIL_LINUX_CRAMFS
>   	bool "cramfs utilities"
> +	depends on BR2_USE_MMU # fork()
>   	select BR2_PACKAGE_ZLIB
>   	help
>   	  Utilities for compressed ROM file system (fsck.cramfs,
> @@ -121,11 +125,13 @@ config BR2_PACKAGE_UTIL_LINUX_EJECT
>   
>   config BR2_PACKAGE_UTIL_LINUX_FALLOCATE
>   	bool "fallocate"
> +	depends on BR2_USE_MMU # fork()
>   	help
>   	  Preallocate space to a file
>   
>   config BR2_PACKAGE_UTIL_LINUX_FDFORMAT
>   	bool "fdformat"
> +	depends on BR2_USE_MMU # fork()
>   	help
>   	  Low-level format a floppy disk
>   
> @@ -140,26 +146,31 @@ config BR2_PACKAGE_UTIL_LINUX_FSCK
>   
>   config BR2_PACKAGE_UTIL_LINUX_HARDLINK
>   	bool "hardlink"
> +	depends on BR2_USE_MMU # fork()
>   	help
>   	  Consolidate duplicate files via hardlinks
>   
>   config BR2_PACKAGE_UTIL_LINUX_HWCLOCK
>   	bool "hwclock"
> +	depends on BR2_USE_MMU # fork()
>   	help
>   	  Query or set the hardware clock (RTC)
>   
>   config BR2_PACKAGE_UTIL_LINUX_IPCMK
>   	bool "ipcmk"
> +	depends on BR2_USE_MMU # fork()
>   	help
>   	  Make various IPC resources
>   
>   config BR2_PACKAGE_UTIL_LINUX_IPCRM
>   	bool "ipcrm"
> +	depends on BR2_USE_MMU # fork()
>   	help
>   	  Remove certain IPC resources
>   
>   config BR2_PACKAGE_UTIL_LINUX_IPCS
>   	bool "ipcs"
> +	depends on BR2_USE_MMU # fork()
>   	help
>   	  Show information on IPC facilities
>   
> @@ -173,11 +184,13 @@ config BR2_PACKAGE_UTIL_LINUX_IRQTOP
>   
>   config BR2_PACKAGE_UTIL_LINUX_KILL
>   	bool "kill"
> +	depends on BR2_USE_MMU # fork()
>   	help
>   	  Send a signal to a process
>   
>   config BR2_PACKAGE_UTIL_LINUX_LAST
>   	bool "last"
> +	depends on BR2_USE_MMU # fork()
>   	help
>   	  Show a listing of last logged in users
>   
> @@ -188,6 +201,7 @@ config BR2_PACKAGE_UTIL_LINUX_LINE
>   
>   config BR2_PACKAGE_UTIL_LINUX_LOGGER
>   	bool "logger"
> +	depends on BR2_USE_MMU # fork()
>   	help
>   	  Enter messages into the system log
>   
> @@ -246,6 +260,7 @@ config BR2_PACKAGE_UTIL_LINUX_LSMEM
>   
>   config BR2_PACKAGE_UTIL_LINUX_MESG
>   	bool "mesg"
> +	depends on BR2_USE_MMU # fork()
>   	help
>   	  Control write access to your terminal
>   
> @@ -288,6 +303,7 @@ config BR2_PACKAGE_UTIL_LINUX_NEWGRP
>   
>   config BR2_PACKAGE_UTIL_LINUX_NOLOGIN
>   	bool "nologin"
> +	depends on BR2_USE_MMU # fork()
>   	help
>   	  Politely refuse a login
>   
> @@ -333,6 +349,7 @@ comment "raw needs a toolchain w/ headers < 5.14"
>   
>   config BR2_PACKAGE_UTIL_LINUX_RENAME
>   	bool "rename"
> +	depends on BR2_USE_MMU # fork()
>   	help
>   	  Rename files
>   
> @@ -366,21 +383,25 @@ comment "runuser needs a uClibc or glibc toolchain w/ wchar, locale, dynamic lib
>   
>   config BR2_PACKAGE_UTIL_LINUX_SCHEDUTILS
>   	bool "scheduling utilities"
> +	depends on BR2_USE_MMU # fork()
>   	depends on BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_14
>   	help
>   	  Scheduling utilities (chrt, ionice, taskset, uclampset)
>   
>   comment "scheduling utilities need a toolchain w/ headers >= 3.14"
> +	depends on BR2_USE_MMU # fork()
>   	depends on !BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_14
>   
>   config BR2_PACKAGE_UTIL_LINUX_SETPRIV
>   	bool "setpriv"
> +	depends on BR2_USE_MMU # fork()
>   	select BR2_PACKAGE_LIBCAP_NG
>   	help
>   	  Run a program with different Linux privilege settings
>   
>   config BR2_PACKAGE_UTIL_LINUX_SETTERM
>   	bool "setterm"
> +	depends on BR2_USE_MMU # fork()
>   	select BR2_PACKAGE_NCURSES
>   	help
>   	  Set terminal attributes
> @@ -417,6 +438,7 @@ config BR2_PACKAGE_UTIL_LINUX_SWITCH_ROOT
>   
>   config BR2_PACKAGE_UTIL_LINUX_TUNELP
>   	bool "tunelp"
> +	depends on BR2_USE_MMU # fork()
>   	select BR2_PACKAGE_NCURSES
>   	help
>   	  Set various parameters for the lp device
> @@ -435,6 +457,7 @@ config BR2_PACKAGE_UTIL_LINUX_UNSHARE
>   
>   config BR2_PACKAGE_UTIL_LINUX_UTMPDUMP
>   	bool "utmpdump"
> +	depends on BR2_USE_MMU # fork()
>   	help
>   	  Dump UTMP and WTMP files in raw format
>   
> @@ -489,6 +512,7 @@ config BR2_PACKAGE_UTIL_LINUX_WDCTL
>   
>   config BR2_PACKAGE_UTIL_LINUX_WRITE
>   	bool "write"
> +	depends on BR2_USE_MMU # fork()
>   	help
>   	  Send a message to another user
>   

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Re: [Buildroot] [PATCH 4/4] package/util-linux: bump version to 2.41.3

[Giulio Benetti]

Hi Bernd,

On 20/12/2025 18:06, Bernd Kuhls wrote:
> Release notes:
> https://www.kernel.org/pub/linux/utils/util-linux/v2.41/v2.41.3-ReleaseNotes
> 
> Signed-off-by: Bernd Kuhls <bernd@kuhls.net>

I've build-tested successfully:
./utils/test-pkg -p util-linux -d ../test-util-linux
                     bootlin-armv5-uclibc [1/6]: OK
                      bootlin-armv7-glibc [2/6]: OK
                    bootlin-armv7m-uclibc [3/6]: OK
                      bootlin-x86-64-musl [4/6]: OK
                       br-arm-full-static [5/6]: OK
                              arm-aarch64 [6/6]: OK
6 builds, 0 skipped, 0 build failed, 0 legal-info failed, 0 show-info failed

So:
Reviewed-by: Giulio Benetti <giulio.benetti@benettiengineering.com>

Best regards
Giulio

> ---
>   package/util-linux/util-linux.hash | 2 +-
>   package/util-linux/util-linux.mk   | 2 +-
>   2 files changed, 2 insertions(+), 2 deletions(-)
> 
> diff --git a/package/util-linux/util-linux.hash b/package/util-linux/util-linux.hash
> index af850c03d6..eab8a0c3b5 100644
> --- a/package/util-linux/util-linux.hash
> +++ b/package/util-linux/util-linux.hash
> @@ -1,5 +1,5 @@
>   # From https://mirrors.edge.kernel.org/pub/linux/utils/util-linux/v2.41/sha256sums.asc
> -sha256  6062a1d89b571a61932e6fc0211f36060c4183568b81ee866cf363bce9f6583e  util-linux-2.41.2.tar.xz
> +sha256  3330d873f0fceb5560b89a7dc14e4f3288bbd880e96903ed9b50ec2b5799e58b  util-linux-2.41.3.tar.xz
>   # License files, locally calculated
>   sha256  4c2db318192bda62f3f8fcf71488bb5e602ae4385eba281d711b46cc13a40bb3  README.licensing
>   sha256  527f738966ca396cd5a68c1509390de2a780c6b614d9ee57f7544a6161938ed1  Documentation/licenses/COPYING.BSD-2-Clause
> diff --git a/package/util-linux/util-linux.mk b/package/util-linux/util-linux.mk
> index 40d948ec97..14389254cb 100644
> --- a/package/util-linux/util-linux.mk
> +++ b/package/util-linux/util-linux.mk
> @@ -8,7 +8,7 @@
>   # util-linux-libs/util-linux-libs.mk needs to be updated accordingly as well.
>   
>   UTIL_LINUX_VERSION_MAJOR = 2.41
> -UTIL_LINUX_VERSION = $(UTIL_LINUX_VERSION_MAJOR).2
> +UTIL_LINUX_VERSION = $(UTIL_LINUX_VERSION_MAJOR).3
>   UTIL_LINUX_SOURCE = util-linux-$(UTIL_LINUX_VERSION).tar.xz
>   UTIL_LINUX_SITE = $(BR2_KERNEL_MIRROR)/linux/utils/util-linux/v$(UTIL_LINUX_VERSION_MAJOR)
>   

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Re: [Buildroot] [PATCH 1/4] package/util-linux: Remove -lpthread from uuid.pc for non-threaded builds

[Thomas Petazzoni via buildroot]

On Sat, Dec 20, 2025 at 06:06:20PM +0100, Bernd Kuhls wrote:

> +define UTIL_LINUX_POST_EXTRACT_FIXUP
> +	$(SED) 's/-lpthread//' $(@D)/libuuid/uuid.pc.in
> +endef
> +ifneq ($(BR2_TOOLCHAIN_HAS_THREADS),y)
> +UTIL_LINUX_POST_EXTRACT_HOOKS += UTIL_LINUX_POST_EXTRACT_FIXUP
> +endif

Yerk, this is quite ugly. Why don't you fix the actual problem
upstream?

Could you try:

diff --git a/libuuid/uuid.pc.in b/libuuid/uuid.pc.in
index 51929fe80..a40dc6644 100644
--- a/libuuid/uuid.pc.in
+++ b/libuuid/uuid.pc.in
@@ -7,5 +7,5 @@ Name: uuid
 Description: Universally unique id library
 Version: @LIBUUID_VERSION@
 Cflags: -I${includedir}/uuid
-Libs.private: @SOCKET_LIBS@ -lpthread
+Libs.private: @SOCKET_LIBS@ @PTHREAD_LIBS@
 Libs: -L${libdir} -luuid

(Totally untested)

Thanks!

Thomas
-- 
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Embedded Linux and Kernel engineering and training
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Re: [Buildroot] [PATCH 2/4] package/util-linux: fix nommu build

[Thomas Petazzoni via buildroot]

On Sat, Dec 20, 2025 at 06:06:21PM +0100, Bernd Kuhls wrote:
> 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);

Since when is this happening?

> +# pthread support uses pthread_atfork, which is not available on nommu
> +ifneq ($(BR2_USE_MMU),y)
> +UTIL_LINUX_CONF_ENV += ac_cv_lib_pthread_pthread_atfork=no
> +endif

This is also the wrong fix, it should be fixed in an upstream
compatible way. The failure doesn't make sense to me. Indeed, the
configure.ac contains:

AC_CHECK_LIB([pthread], [pthread_atfork], [
        PTHREAD_LIBS="-lpthread"
        AC_DEFINE([HAVE_LIBPTHREAD], [1], [Define if libpthred exist])
])

So HAVE_LIBPTHREAD should only be defined if pthread_atfork() is found
in libpthread.

And the only pthread_atfork() call is within an #ifdef HAVE_LIBPTHREAD
condition:

#ifdef HAVE_LIBPTHREAD
	static volatile sig_atomic_t atfork_registered;
	time_t	now;

	if (!atfork_registered) {
		pthread_atfork(NULL, NULL, reset_uuidd_cache);
		atfork_registered = 1;
	}

So, some investigation is needed to understand why this configure.ac +
conditional compilation logic doesn't work as it should.

But isn't this something Julien already had a look at a long time ago?

Thomas
-- 
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Embedded Linux and Kernel engineering and training
https://bootlin.com
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Re: [Buildroot] [PATCH 3/4] package/util-linux: add dependency to BR2_USE_MMU when needed

[Thomas Petazzoni via buildroot]

On Sat, Dec 20, 2025 at 06:06:22PM +0100, Bernd Kuhls wrote:
> Upstream added fork() to lib/canonicalize.c in version 2.34[1]
> https://github.com/util-linux/util-linux/commit/e101a9eb0fab6725e0a239a92f9b50822c494a3e
> 
> but the resulting build errors on non-mmu archs were most likely masked
> by previous build errors which are already fixed.
> 
> lib/canonicalize.c as part of libcommon is widely used so we need to add
> the dependency to many Config.in options.
> 
> For an overview about its usage see
> output/build/util-linux-2.41.2$ grep -r "LDADD = \$(LDADD) libcommon.la" * | grep Makemodule | cut -d ":" -f 2 | sort
> 
> Fixes:
> https://autobuild.buildroot.net/results/34b/34b1f733fdfb5c5e30e631576f875398435ad115/
> 
> [1] Added to buildroot with commit bb216ed060b16e09b2027ef242347b2f2e3c97dc
>     in 2019.
> 
> Signed-off-by: Bernd Kuhls <bernd@kuhls.net>

Applied, thanks!

Thomas
-- 
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Embedded Linux and Kernel engineering and training
https://bootlin.com
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Re: [Buildroot] [PATCH 4/4] package/util-linux: bump version to 2.41.3

[Thomas Petazzoni via buildroot]

On Sat, Dec 20, 2025 at 06:06:23PM +0100, Bernd Kuhls wrote:
> Release notes:
> https://www.kernel.org/pub/linux/utils/util-linux/v2.41/v2.41.3-ReleaseNotes
> 
> Signed-off-by: Bernd Kuhls <bernd@kuhls.net>

Applied, thanks!

Thomas
-- 
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Embedded Linux and Kernel engineering and training
https://bootlin.com
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Re: [Buildroot] [PATCH 3/4] package/util-linux: add dependency to BR2_USE_MMU when needed

[Arnout Vandecappelle via buildroot]

In reply of:
> Upstream added fork() to lib/canonicalize.c in version 2.34[1]
> https://github.com/util-linux/util-linux/commit/e101a9eb0fab6725e0a239a92f9b50822c494a3e
> 
> but the resulting build errors on non-mmu archs were most likely masked
> by previous build errors which are already fixed.
> 
> lib/canonicalize.c as part of libcommon is widely used so we need to add
> the dependency to many Config.in options.
> 
> For an overview about its usage see
> output/build/util-linux-2.41.2$ grep -r "LDADD = \$(LDADD) libcommon.la" * | grep Makemodule | cut -d ":" -f 2 | sort
> 
> Fixes:
> https://autobuild.buildroot.net/results/34b/34b1f733fdfb5c5e30e631576f875398435ad115/
> 
> [1] Added to buildroot with commit bb216ed060b16e09b2027ef242347b2f2e3c97dc
>     in 2019.
> 
> Signed-off-by: Bernd Kuhls <bernd@kuhls.net>

Applied to 2025.02.x and 2025.11.x. Thanks

> ---
>  package/linux-tools/Config.in |  2 +-
>  package/util-linux/Config.in  | 24 ++++++++++++++++++++++++
>  2 files changed, 25 insertions(+), 1 deletion(-)
> 
> diff --git a/package/linux-tools/Config.in b/package/linux-tools/Config.in
> index 5a38f6dafe..20131b0d9f 100644
> --- a/package/linux-tools/Config.in
> +++ b/package/linux-tools/Config.in
> @@ -150,7 +150,7 @@ comment "rtla needs a toolchain w/ threads, dynamic library"
>  config BR2_PACKAGE_LINUX_TOOLS_SELFTESTS
>  	bool"selftests"
>  	depends on BR2_PACKAGE_BUSYBOX_SHOW_OTHERS # bash
> -	depends on BR2_USE_MMU  # bash
> +	depends on BR2_USE_MMU  # bash, util-linux-schedutils
>  	depends on !BR2_STATIC_LIBS
>  	depends on BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_14 # util-linux schedutils
>  	select BR2_PACKAGE_LINUX_TOOLS
> diff --git a/package/util-linux/Config.in b/package/util-linux/Config.in
> index a168abe720..dfebaa0947 100644
> --- a/package/util-linux/Config.in
> +++ b/package/util-linux/Config.in
> @@ -75,11 +75,13 @@ config BR2_PACKAGE_UTIL_LINUX_AGETTY
>  
>  config BR2_PACKAGE_UTIL_LINUX_BFS
>  	bool "bfs"
> +	depends on BR2_USE_MMU # fork()
>  	help
>  	  SCO bfs filesystem support
>  
>  config BR2_PACKAGE_UTIL_LINUX_CAL
>  	bool "cal"
> +	depends on BR2_USE_MMU # fork()
>  	help
>  	  Display a calendar, or some part of it
>  
> @@ -100,11 +102,13 @@ comment "chfn/chsh needs a toolchain w/ wchar, locale, dynamic library, gcc >= 4
>  
>  config BR2_PACKAGE_UTIL_LINUX_CHMEM
>  	bool "chmem"
> +	depends on BR2_USE_MMU # fork()
>  	help
>  	  Sets a particular size or range of memory online or offline
>  
>  config BR2_PACKAGE_UTIL_LINUX_CRAMFS
>  	bool "cramfs utilities"
> +	depends on BR2_USE_MMU # fork()
>  	select BR2_PACKAGE_ZLIB
>  	help
>  	  Utilities for compressed ROM file system (fsck.cramfs,
> @@ -121,11 +125,13 @@ config BR2_PACKAGE_UTIL_LINUX_EJECT
>  
>  config BR2_PACKAGE_UTIL_LINUX_FALLOCATE
>  	bool "fallocate"
> +	depends on BR2_USE_MMU # fork()
>  	help
>  	  Preallocate space to a file
>  
>  config BR2_PACKAGE_UTIL_LINUX_FDFORMAT
>  	bool "fdformat"
> +	depends on BR2_USE_MMU # fork()
>  	help
>  	  Low-level format a floppy disk
>  
> @@ -140,26 +146,31 @@ config BR2_PACKAGE_UTIL_LINUX_FSCK
>  
>  config BR2_PACKAGE_UTIL_LINUX_HARDLINK
>  	bool "hardlink"
> +	depends on BR2_USE_MMU # fork()
>  	help
>  	  Consolidate duplicate files via hardlinks
>  
>  config BR2_PACKAGE_UTIL_LINUX_HWCLOCK
>  	bool "hwclock"
> +	depends on BR2_USE_MMU # fork()
>  	help
>  	  Query or set the hardware clock (RTC)
>  
>  config BR2_PACKAGE_UTIL_LINUX_IPCMK
>  	bool "ipcmk"
> +	depends on BR2_USE_MMU # fork()
>  	help
>  	  Make various IPC resources
>  
>  config BR2_PACKAGE_UTIL_LINUX_IPCRM
>  	bool "ipcrm"
> +	depends on BR2_USE_MMU # fork()
>  	help
>  	  Remove certain IPC resources
>  
>  config BR2_PACKAGE_UTIL_LINUX_IPCS
>  	bool "ipcs"
> +	depends on BR2_USE_MMU # fork()
>  	help
>  	  Show information on IPC facilities
>  
> @@ -173,11 +184,13 @@ config BR2_PACKAGE_UTIL_LINUX_IRQTOP
>  
>  config BR2_PACKAGE_UTIL_LINUX_KILL
>  	bool "kill"
> +	depends on BR2_USE_MMU # fork()
>  	help
>  	  Send a signal to a process
>  
>  config BR2_PACKAGE_UTIL_LINUX_LAST
>  	bool "last"
> +	depends on BR2_USE_MMU # fork()
>  	help
>  	  Show a listing of last logged in users
>  
> @@ -188,6 +201,7 @@ config BR2_PACKAGE_UTIL_LINUX_LINE
>  
>  config BR2_PACKAGE_UTIL_LINUX_LOGGER
>  	bool "logger"
> +	depends on BR2_USE_MMU # fork()
>  	help
>  	  Enter messages into the system log
>  
> @@ -246,6 +260,7 @@ config BR2_PACKAGE_UTIL_LINUX_LSMEM
>  
>  config BR2_PACKAGE_UTIL_LINUX_MESG
>  	bool "mesg"
> +	depends on BR2_USE_MMU # fork()
>  	help
>  	  Control write access to your terminal
>  
> @@ -288,6 +303,7 @@ config BR2_PACKAGE_UTIL_LINUX_NEWGRP
>  
>  config BR2_PACKAGE_UTIL_LINUX_NOLOGIN
>  	bool "nologin"
> +	depends on BR2_USE_MMU # fork()
>  	help
>  	  Politely refuse a login
>  
> @@ -333,6 +349,7 @@ comment "raw needs a toolchain w/ headers < 5.14"
>  
>  config BR2_PACKAGE_UTIL_LINUX_RENAME
>  	bool "rename"
> +	depends on BR2_USE_MMU # fork()
>  	help
>  	  Rename files
>  
> @@ -366,21 +383,25 @@ comment "runuser needs a uClibc or glibc toolchain w/ wchar, locale, dynamic lib
>  
>  config BR2_PACKAGE_UTIL_LINUX_SCHEDUTILS
>  	bool "scheduling utilities"
> +	depends on BR2_USE_MMU # fork()
>  	depends on BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_14
>  	help
>  	  Scheduling utilities (chrt, ionice, taskset, uclampset)
>  
>  comment "scheduling utilities need a toolchain w/ headers >= 3.14"
> +	depends on BR2_USE_MMU # fork()
>  	depends on !BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_14
>  
>  config BR2_PACKAGE_UTIL_LINUX_SETPRIV
>  	bool "setpriv"
> +	depends on BR2_USE_MMU # fork()
>  	select BR2_PACKAGE_LIBCAP_NG
>  	help
>  	  Run a program with different Linux privilege settings
>  
>  config BR2_PACKAGE_UTIL_LINUX_SETTERM
>  	bool "setterm"
> +	depends on BR2_USE_MMU # fork()
>  	select BR2_PACKAGE_NCURSES
>  	help
>  	  Set terminal attributes
> @@ -417,6 +438,7 @@ config BR2_PACKAGE_UTIL_LINUX_SWITCH_ROOT
>  
>  config BR2_PACKAGE_UTIL_LINUX_TUNELP
>  	bool "tunelp"
> +	depends on BR2_USE_MMU # fork()
>  	select BR2_PACKAGE_NCURSES
>  	help
>  	  Set various parameters for the lp device
> @@ -435,6 +457,7 @@ config BR2_PACKAGE_UTIL_LINUX_UNSHARE
>  
>  config BR2_PACKAGE_UTIL_LINUX_UTMPDUMP
>  	bool "utmpdump"
> +	depends on BR2_USE_MMU # fork()
>  	help
>  	  Dump UTMP and WTMP files in raw format
>  
> @@ -489,6 +512,7 @@ config BR2_PACKAGE_UTIL_LINUX_WDCTL
>  
>  config BR2_PACKAGE_UTIL_LINUX_WRITE
>  	bool "write"
> +	depends on BR2_USE_MMU # fork()
>  	help
>  	  Send a message to another user
>  
> -- 
> 2.47.3
> 
> _______________________________________________
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