m4: Backport a patch to build with --disable-nls

Building with USE_NLS = "no" results in the following errors:

  lib/spawn-pipe.c: In function 'create_pipe':
  lib/spawn-pipe.c:218:7: error: format not a string literal and no
  format arguments [-Werror=format-security]
    218 |       error (EXIT_FAILURE, errno, _("cannot create pipe"));
        |       ^~~~~
  lib/spawn-pipe.c:221:7: error: format not a string literal and no
  format arguments [-Werror=format-security]
    221 |       error (EXIT_FAILURE, errno, _("cannot create pipe"));
        |       ^~~~~
  lib/clean-temp.c: In function 'create_temp_dir':
  lib/clean-temp.c:234:7: error: format not a string literal and no
  format arguments [-Werror=format-security]
    234 |       error (0, errno,
        |       ^~~~~

Backport a patch from gnulib to avoid the problem.

(From OE-Core rev: 635df18f32e8f13cc5897737450dbd9f9207db3b)

Signed-off-by: Peter Kjellerstedt <peter.kjellerstedt@axis.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

2 files changed, 134 insertions, 0 deletions

diff --git a/meta/recipes-devtools/m4/m4-1.4.20.inc b/meta/recipes-devtools/m4/m4-1.4.20.inc
index 2ea3a9bace..0640395050 100644
--- a/meta/recipes-devtools/m4/m4-1.4.20.inc
+++ b/meta/recipes-devtools/m4/m4-1.4.20.inc
@@ -7,6 +7,7 @@ GNU M4 also has built-in functions for including files, running shell commands,
 inherit autotools texinfo ptest gettext
 
 SRC_URI = "${GNU_MIRROR}/m4/m4-${PV}.tar.gz \
+           file://0001-gettext-h-Avoid-gcc-Wformat-security-warnings-with-d.patch \
            "
 SRC_URI:append:class-target = " file://run-ptest \
                                 file://serial-tests-config.patch \
diff --git a/meta/recipes-devtools/m4/m4/0001-gettext-h-Avoid-gcc-Wformat-security-warnings-with-d.patch b/meta/recipes-devtools/m4/m4/0001-gettext-h-Avoid-gcc-Wformat-security-warnings-with-d.patch
new file mode 100644
index 0000000000..6fad05041f
--- /dev/null
+++ b/meta/recipes-devtools/m4/m4/0001-gettext-h-Avoid-gcc-Wformat-security-warnings-with-d.patch
@@ -0,0 +1,133 @@
+From c4dc0ab4424fca31635b7837b1c180f7d3df8ede Mon Sep 17 00:00:00 2001
+From: Bruno Haible <bruno@clisp.org>
+Date: Wed, 28 May 2025 15:14:07 +0200
+Subject: [PATCH] gettext-h: Avoid gcc -Wformat-security warnings with
+ --disable-nls.
+MIME-Version: 1.0
+Content-Type: text/plain; charset=UTF-8
+Content-Transfer-Encoding: 8bit
+
+Reported by Holger Hoffstätte <holger@applied-asynchrony.com> in
+<https://lists.gnu.org/archive/html/bug-gnulib/2025-05/msg00225.html>.
+
+* lib/gettext.h (gettext, dgettext, dcgettext): With gcc in C mode,
+define these as inline functions.
+* lib/sigpipe-die.c (sigpipe_die): Use translated string as a format
+string, relying on the format string checking done by 'msgfmt -c'.
+* lib/xmemcoll.c (collate_error): Revert commit from 2025-01-17.
+* lib/xprintf.c (xvprintf, xvfprintf): Likewise.
+* lib/openat-die.c (openat_save_fail, openat_restore_fail): Revert
+commit from 2024-12-10.
+
+Upstream-Status: Backport [https://cgit.git.savannah.gnu.org/cgit/gnulib.git/commit/?id=6e5015dd557b20ae4a0829c4bf78480ce2f4cb04]
+Signed-off-by: Peter Kjellerstedt <peter.kjellerstedt@axis.com>
+---
+ lib/gettext.h    | 49 ++++++++++++++++++++++++++++++++++++------------
+ lib/openat-die.c |  4 ++--
+ lib/xprintf.c    |  4 ++--
+ 3 files changed, 41 insertions(+), 16 deletions(-)
+
+diff --git a/lib/gettext.h b/lib/gettext.h
+index ea0c27e..bb3d975 100644
+--- a/lib/gettext.h
++++ b/lib/gettext.h
+@@ -59,18 +59,43 @@
+ #  endif
+ # endif
+ 
+-/* Disabled NLS.
+-   The casts to 'const char *' serve the purpose of producing warnings
+-   for invalid uses of the value returned from these functions.
+-   On pre-ANSI systems without 'const', the config.h file is supposed to
+-   contain "#define const".  */
+-# undef gettext
+-# define gettext(Msgid) ((const char *) (Msgid))
+-# undef dgettext
+-# define dgettext(Domainname, Msgid) ((void) (Domainname), gettext (Msgid))
+-# undef dcgettext
+-# define dcgettext(Domainname, Msgid, Category) \
+-    ((void) (Category), dgettext (Domainname, Msgid))
++/* Disabled NLS.  */
++# if defined __GNUC__ && !defined __clang__ && !defined __cplusplus
++/* Use inline functions, to avoid warnings
++     warning: format not a string literal and no format arguments
++   that don't occur with enabled NLS.  */
++__attribute__ ((__always_inline__, __gnu_inline__)) extern inline
++const char *
++gettext (const char *msgid)
++{
++  return msgid;
++}
++__attribute__ ((__always_inline__, __gnu_inline__)) extern inline
++const char *
++dgettext (const char *domain, const char *msgid)
++{
++  (void) domain;
++  return msgid;
++}
++__attribute__ ((__always_inline__, __gnu_inline__)) extern inline
++const char *
++dcgettext (const char *domain, const char *msgid, int category)
++{
++  (void) domain;
++  (void) category;
++  return msgid;
++}
++# else
++/* The casts to 'const char *' serve the purpose of producing warnings
++   for invalid uses of the value returned from these functions.  */
++#  undef gettext
++#  define gettext(Msgid) ((const char *) (Msgid))
++#  undef dgettext
++#  define dgettext(Domainname, Msgid) ((void) (Domainname), gettext (Msgid))
++#  undef dcgettext
++#  define dcgettext(Domainname, Msgid, Category) \
++     ((void) (Category), dgettext (Domainname, Msgid))
++# endif
+ # undef ngettext
+ # define ngettext(Msgid1, Msgid2, N) \
+     ((N) == 1 \
+diff --git a/lib/openat-die.c b/lib/openat-die.c
+index 3fbb5d8..79a5b23 100644
+--- a/lib/openat-die.c
++++ b/lib/openat-die.c
+@@ -34,7 +34,7 @@ _Noreturn void
+ openat_save_fail (int errnum)
+ {
+ #ifndef GNULIB_LIBPOSIX
+-  error (exit_failure, errnum, "%s",
++  error (exit_failure, errnum,
+          _("unable to record current working directory"));
+ #endif
+   /* _Noreturn cannot be applied to error, since it returns
+@@ -53,7 +53,7 @@ _Noreturn void
+ openat_restore_fail (int errnum)
+ {
+ #ifndef GNULIB_LIBPOSIX
+-  error (exit_failure, errnum, "%s",
++  error (exit_failure, errnum,
+          _("failed to return to initial working directory"));
+ #endif
+ 
+diff --git a/lib/xprintf.c b/lib/xprintf.c
+index 4d9a3e5..790af53 100644
+--- a/lib/xprintf.c
++++ b/lib/xprintf.c
+@@ -45,7 +45,7 @@ xvprintf (char const *restrict format, va_list args)
+ {
+   off64_t retval = vzprintf (format, args);
+   if (retval < 0 && ! ferror (stdout))
+-    error (exit_failure, errno, "%s", _("cannot perform formatted output"));
++    error (exit_failure, errno, _("cannot perform formatted output"));
+ 
+   return retval;
+ }
+@@ -67,7 +67,7 @@ xvfprintf (FILE *restrict stream, char const *restrict format, va_list args)
+ {
+   off64_t retval = vfzprintf (stream, format, args);
+   if (retval < 0 && ! ferror (stream))
+-    error (exit_failure, errno, "%s", _("cannot perform formatted output"));
++    error (exit_failure, errno, _("cannot perform formatted output"));
+ 
+   return retval;
+ }