systemd: new musl patchset

  ++ lib.optionals (stdenv.hostPlatform.isLinux && stdenv.hostPlatform.isGnu) [

    ./0020-timesyncd-disable-NSCD-when-DNSSEC-validation-is-dis.patch

  ]

  ++ lib.optionals stdenv.hostPlatform.isMusl (

    let

      # NOTE: the master-next branch does not have stable URLs.

      # If we need patches that aren't in master yet, they'll have to be

      # vendored.

      oe-core = fetchzip {

        url = "https://git.openembedded.org/openembedded-core/snapshot/openembedded-core-4891f47cdaf919033bf1c02cc12e4805e5db99a0.tar.gz";

        hash = "sha256-YKL/oC+rPZ2EEVNidEV+pJihZgUv7vLb0OASplgktn4=";

      };

    in

    map (patch: "${oe-core}/meta/recipes-core/systemd/systemd/${patch}") [

      "0003-missing_type.h-add-comparison_fn_t.patch"

      "0004-add-fallback-parse_printf_format-implementation.patch"

      "0005-don-t-fail-if-GLOB_BRACE-and-GLOB_ALTDIRFUNC-is-not-.patch"

      "0006-add-missing-FTW_-macros-for-musl.patch"

      "0007-Use-uintmax_t-for-handling-rlim_t.patch"

      "0008-Define-glibc-compatible-basename-for-non-glibc-syste.patch"

      "0009-Do-not-disable-buffering-when-writing-to-oom_score_a.patch"

      "0010-distinguish-XSI-compliant-strerror_r-from-GNU-specif.patch"

      "0011-avoid-redefinition-of-prctl_mm_map-structure.patch"

      "0012-do-not-disable-buffer-in-writing-files.patch"

      "0013-Handle-__cpu_mask-usage.patch"

      "0014-Handle-missing-gshadow.patch"

      "0015-missing_syscall.h-Define-MIPS-ABI-defines-for-musl.patch"

      "0016-pass-correct-parameters-to-getdents64.patch"

      "0017-Adjust-for-musl-headers.patch"

      "0018-test-bus-error-strerror-is-assumed-to-be-GNU-specifi.patch"

      "0019-errno-util-Make-STRERROR-portable-for-musl.patch"

      "0020-sd-event-Make-malloc_trim-conditional-on-glibc.patch"

      "0021-shared-Do-not-use-malloc_info-on-musl.patch"

      "0022-avoid-missing-LOCK_EX-declaration.patch"

      "0023-include-signal.h-to-avoid-the-undeclared-error.patch"

      "0024-undef-stdin-for-references-using-stdin-as-a-struct-m.patch"

      "0025-adjust-header-inclusion-order-to-avoid-redeclaration.patch"

      "0026-build-path.c-avoid-boot-time-segfault-for-musl.patch"

    ]

    ++ [

      # add a missing include

      (fetchpatch {

        url = "https://github.com/systemd/systemd/commit/34fcd3638817060c79e1186b370e46d9b3a7409f.patch";

        hash = "sha256-Uaewo3jPrZGJttlLcqO6cCj1w3IGZmvbur4+TBdIPxc=";

        excludes = [ "src/udev/udevd.c" ];

      })

      (fetchpatch {

        url = "https://gitlab.postmarketos.org/postmarketOS/systemd/-/commit/5760be33bd26d7e7c66a7294c5f6fd6c7044683f.patch";

        hash = "sha256-Om+OhGyZJfZNpbtMInm3vGagLbbtOY71fDMZXj6pbPY=";

      })

    ]

  );

  ++ lib.optionals stdenv.hostPlatform.isMusl [

    # Patchset to build with musl by an upstream systemd contributor:

    # https://github.com/systemd/systemd/pull/37788

    # This is vendored here because of the lack of permanent patch urls for the unmerged PR

    ./musl/0001-musl-meson-allow-to-choose-libc-implementation.patch

    ./musl/0002-musl-meson-do-not-use-libcrypt-libxcrypt.patch

    ./musl/0003-musl-meson-explicitly-link-with-libintl-when-necessa.patch

    ./musl/0004-musl-meson-explicitly-set-_LARGEFILE64_SOURCE.patch

    ./musl/0005-musl-meson-make-musl-not-define-wchar_t-in-their-hea.patch

    ./musl/0006-musl-meson-check-existence-of-renameat2.patch

    ./musl/0007-musl-meson-gracefully-disable-gshadow-idn-nss-and-ut.patch

    ./musl/0008-musl-introduce-dummy-gshadow-header-file-for-userdb.patch

    ./musl/0009-musl-add-fallback-parse_printf_format-implementation.patch

    ./musl/0010-musl-introduce-GNU-specific-version-of-strerror_r.patch

    ./musl/0011-musl-make-strptime-accept-z.patch

    ./musl/0012-musl-make-strtoll-accept-strings-start-with-dot.patch

    ./musl/0013-musl-introduce-strerrorname_np.patch

    ./musl/0014-musl-introduce-dummy-functions-for-mallinfo-malloc_i.patch

    ./musl/0015-musl-introduce-dummy-function-for-gnu_get_libc_versi.patch

    ./musl/0016-musl-define-__THROW-when-not-defined.patch

    ./musl/0017-musl-replace-sys-prctl.h-with-our-own-implementation.patch

    ./musl/0018-musl-replace-netinet-if_ether.h-with-our-own-impleme.patch

    ./musl/0019-musl-add-missing-FTW_CONTINUE-macro.patch

    ./musl/0020-musl-add-several-missing-statx-macros.patch

    ./musl/0021-musl-avoid-conflict-between-fcntl.h-and-our-forward..patch

    ./musl/0022-musl-redefine-HOST_NAME_MAX-as-64.patch

    ./musl/0023-musl-avoid-multiple-evaluations-in-CPU_ISSET_S-macro.patch

    ./musl/0024-musl-core-there-is-one-less-usable-signal-when-built.patch

    ./musl/0025-musl-build-path-fix-reading-DT_RUNPATH-or-DT_RPATH.patch

    ./musl/0026-musl-format-util-use-llu-for-formatting-rlim_t.patch

    ./musl/0027-musl-time-util-skip-tm.tm_wday-check.patch

    ./musl/0028-musl-glob-util-filter-out-.-and-.-even-if-GLOB_ALTDI.patch

  ];

  postPatch = ''

    substituteInPlace src/basic/path-util.h --replace "@defaultPathNormal@" "${placeholder "out"}/bin/"

    (lib.mesonOption "zshcompletiondir" "no")

  ]

  ++ lib.optionals stdenv.hostPlatform.isMusl [

    (lib.mesonOption "libc" "musl")

    (lib.mesonBool "gshadow" false)

    (lib.mesonBool "idn" false)

  ];

From 0e2b9909fed24a682c8566f9df8bbac4e9347186 Mon Sep 17 00:00:00 2001

From: Yu Watanabe <watanabe.yu+github@gmail.com>

Date: Mon, 7 Jul 2025 14:11:19 +0900

Subject: [PATCH 01/30] musl: meson: allow to choose libc implementation

This also introduces skelton directories for storing musl specific code.

---

 meson.build               | 17 +++++++++++++++--

 meson_options.txt         |  2 ++

 src/libc/meson.build      |  2 ++

 src/libc/musl/meson.build |  5 +++++

 4 files changed, 24 insertions(+), 2 deletions(-)

 create mode 100644 src/libc/musl/meson.build

diff --git a/meson.build b/meson.build

index 238b935372..bea62f0eb6 100644

--- a/meson.build

+++ b/meson.build

@@ -72,7 +72,10 @@ conf.set10('SD_BOOT', false)

 # Create a title-less summary section early, so it ends up first in the output.

 # More items are added later after they have been detected.

-summary({'build mode' : get_option('mode')})

+summary({

+        'libc'       : get_option('libc'),

+        'build mode' : get_option('mode'),

+})

 #####################################################################

@@ -2042,7 +2045,14 @@ dbus_programs = []

 boot_stubs = []

 # This is similar to system_includes below, but for passing custom_target().

-system_include_args = [

+system_include_args = []

+if get_option('libc') == 'musl'

+        system_include_args += [

+                '-isystem', meson.project_build_root()  / 'src/include/musl',

+                '-isystem', meson.project_source_root() / 'src/include/musl',

+        ]

+endif

+system_include_args += [

         '-isystem', meson.project_build_root()  / 'src/include/override',

         '-isystem', meson.project_source_root() / 'src/include/override',

         '-isystem', meson.project_build_root()  / 'src/include/uapi',

@@ -2060,6 +2070,9 @@ system_includes = [

                 is_system : true,

         ),

 ]

+if get_option('libc') == 'musl'

+        system_includes += include_directories('src/include/musl', is_system : true)

+endif

 basic_includes = [

         include_directories(

diff --git a/meson_options.txt b/meson_options.txt

index d8dec33ec4..ad203ba301 100644

--- a/meson_options.txt

+++ b/meson_options.txt

@@ -397,6 +397,8 @@ option('ima', type : 'boolean',

 option('ipe', type : 'boolean',

        description : 'IPE support')

+option('libc', type : 'combo', choices : ['glibc', 'musl'],

+       description : 'libc implementation to be used')

 option('acl', type : 'feature', deprecated : { 'true' : 'enabled', 'false' : 'disabled' },

        description : 'libacl support')

 option('audit', type : 'feature', deprecated : { 'true' : 'enabled', 'false' : 'disabled' },

diff --git a/src/libc/meson.build b/src/libc/meson.build

index eeee98c9d6..306512ffd7 100644

--- a/src/libc/meson.build

+++ b/src/libc/meson.build

@@ -16,6 +16,8 @@ libc_wrapper_sources = files(

         'xattr.c',

 )

+subdir('musl')

+

 sources += libc_wrapper_sources

 libc_wrapper_static = static_library(

diff --git a/src/libc/musl/meson.build b/src/libc/musl/meson.build

new file mode 100644

index 0000000000..a876230c67

--- /dev/null

+++ b/src/libc/musl/meson.build

@@ -0,0 +1,5 @@

+# SPDX-License-Identifier: LGPL-2.1-or-later

+

+if get_option('libc') != 'musl'

+        subdir_done()

+endif

-- 

2.51.0

From 03010a0716f509b448c84a35bc2723a6f08e0c09 Mon Sep 17 00:00:00 2001

From: Yu Watanabe <watanabe.yu+github@gmail.com>

Date: Wed, 23 Jul 2025 10:24:14 +0900

Subject: [PATCH 02/30] musl: meson: do not use libcrypt/libxcrypt

Otherwise, when both glibc and musl are installed, libxcrypt or glibc's

libcrypt may be picked even when we are building systemd with musl.

Let's not use libcrypt/libxcrypt in that case.

---

 meson.build | 12 ++++++++----

 1 file changed, 8 insertions(+), 4 deletions(-)

diff --git a/meson.build b/meson.build

index bea62f0eb6..06be36409f 100644

--- a/meson.build

+++ b/meson.build

@@ -1013,10 +1013,14 @@ else

         libatomic = []

 endif

-libcrypt = dependency('libcrypt', 'libxcrypt', required : false)

-if not libcrypt.found()

-        # fallback to use find_library() if libcrypt is provided by glibc, e.g. for LibreELEC.

-        libcrypt = cc.find_library('crypt')

+if get_option('libc') == 'musl'

+        libcrypt = []

+else

+        libcrypt = dependency('libcrypt', 'libxcrypt', required : false)

+        if not libcrypt.found()

+                # fallback to use find_library() if libcrypt is provided by glibc, e.g. for LibreELEC.

+                libcrypt = cc.find_library('crypt')

+        endif

 endif

 foreach func : [

-- 

2.51.0

From bf4cb5aeeef23c5f12e6d2258bb8f3d12059f59f Mon Sep 17 00:00:00 2001

From: Yu Watanabe <watanabe.yu+github@gmail.com>

Date: Sat, 6 Sep 2025 16:25:41 +0900

Subject: [PATCH 03/30] musl: meson: explicitly link with libintl when

 necessary

On some musl based distributions provides dgettext() by libintl.so.

Hence, we need to add dependency in that case.

---

 meson.build          | 17 +++++++++++++++++

 src/home/meson.build |  1 +

 2 files changed, 18 insertions(+)

diff --git a/meson.build b/meson.build

index 06be36409f..054752c339 100644

--- a/meson.build

+++ b/meson.build

@@ -1002,6 +1002,23 @@ libm = cc.find_library('m')

 libdl = cc.find_library('dl')

 libcap = dependency('libcap')

+# On some distributions that uses musl (e.g. Alpine), libintl.h may be provided by gettext rather than musl.

+# In that case, we need to explicitly link with libintl.so.

+if get_option('libc') == 'musl'

+        if cc.has_function('dgettext', prefix : '''#include <libintl.h>''', args : '-D_GNU_SOURCE')

+                libintl = []

+        else

+                libintl = cc.find_library('intl')

+                if not cc.has_function('dgettext', prefix : '''#include <libintl.h>''', args : '-D_GNU_SOURCE',

+                                       dependencies : libintl)

+                        error('dgettext() not found.')

+                endif

+        endif

+else

+        # When building with glibc, we assume that libintl.h is provided by glibc.

+        libintl = []

+endif

+

 # On some architectures, libatomic is required. But on some installations,

 # it is found, but actual linking fails. So let's try to use it opportunistically.

 # If it is installed, but not needed, it will be dropped because of --as-needed.

diff --git a/src/home/meson.build b/src/home/meson.build

index 1937e6f56c..3305334707 100644

--- a/src/home/meson.build

+++ b/src/home/meson.build

@@ -115,6 +115,7 @@ modules += [

                 'sources' : pam_systemd_home_sources,

                 'dependencies' : [

                         libcrypt,

+                        libintl,

                         libpam_misc,

                         libpam,

                         threads,

-- 

2.51.0

From 59f993d1acb069f3f2b7d6c71b91696388692702 Mon Sep 17 00:00:00 2001

From: Yu Watanabe <watanabe.yu+github@gmail.com>

Date: Tue, 10 Jun 2025 00:29:46 +0900

Subject: [PATCH 04/30] musl: meson: explicitly set _LARGEFILE64_SOURCE

glibc sets it when _GNU_SOURCE is defined, however, musl does not.

Let's explicitly define it to make getdents64() and struct dirent64

available even when building with musl.

---

 meson.build | 6 ++++++

 1 file changed, 6 insertions(+)

diff --git a/meson.build b/meson.build

index 054752c339..37fb1c2765 100644

--- a/meson.build

+++ b/meson.build

@@ -560,6 +560,12 @@ conf.set10('HAVE_WARNING_ZERO_AS_NULL_POINTER_CONSTANT', have)

 conf.set('_GNU_SOURCE', 1)

 conf.set('__SANE_USERSPACE_TYPES__', true)

+if get_option('libc') == 'musl'

+        # glibc always defines _LARGEFILE64_SOURCE when _GNU_SOURCE is set, but musl does not do that,

+        # and it is necessary for making getdents64() and struct dirent64 exist.

+        conf.set('_LARGEFILE64_SOURCE', 1)

+endif

+

 conf.set('SIZEOF_DEV_T', cc.sizeof('dev_t', prefix : '#include <sys/types.h>'))

 conf.set('SIZEOF_INO_T', cc.sizeof('ino_t', prefix : '#include <sys/types.h>'))

 conf.set('SIZEOF_RLIM_T', cc.sizeof('rlim_t', prefix : '#include <sys/resource.h>'))

-- 

2.51.0