libfaketime: Upgrade to 0.9.13

Release notes:
https://github.com/wolfcw/libfaketime/blob/v0.9.13/NEWS

Drop 0001-Add-const-qualifiers-to-fix-build-with-ISO-C23.patch, it is
merged upstream via PR #525.

Add a patch to fix the build with clang 23, which added
-Wunused-but-set-global and turns the -Werror in src/Makefile into:

  libfaketime.c:340:23: error: variable 'real_lstat' set but not used
    [-Werror,-Wunused-but-set-global]

ftpl_init() resolves every real_* pointer up front by design, so the
ones whose wrappers are not compiled on Linux/glibc end up written and
never read. Annotate those with __attribute__((unused)) rather than
adding -Wno-error=unused-but-set-global to CFLAGS, since the Makefile
has no flag-probing and older clang rejects the unknown warning group
under the same -Werror.

Signed-off-by: Khem Raj <khem.raj@oss.qualcomm.com>

meta-oe/recipes-test/libfaketime/libfaketime/0001-Add-const-qualifiers-to-fix-build-with-ISO-C23.patch

@@ -1,34 +0,0 @@
-From dbe865dfdba0145d993d70b7fd4ec88b2f47554b Mon Sep 17 00:00:00 2001
-From: Tomas Korbar <tkorbar@redhat.com>
-Date: Mon, 15 Dec 2025 11:03:21 +0100
-Subject: [PATCH] Add const qualifiers to fix build with ISO C23
-
-Fix https://github.com/wolfcw/libfaketime/issues/524
-
-Upstream-Status: Backport [https://github.com/wolfcw/libfaketime/pull/525]
----
- src/libfaketime.c | 4 ++--
- 1 file changed, 2 insertions(+), 2 deletions(-)
-
-diff --git a/src/libfaketime.c b/src/libfaketime.c
-index ef1dca9..02839c8 100644
---- a/src/libfaketime.c
-+++ b/src/libfaketime.c
-@@ -2666,7 +2666,7 @@ int timespec_get(struct timespec *ts, int base)
- static void parse_ft_string(const char *user_faked_time)
- {
-   struct tm user_faked_time_tm;
--  char * tmp_time_fmt;
-+  const char * tmp_time_fmt;
-   char * nstime_str;
-
-   if (!strncmp(user_faked_time, user_faked_time_saved, BUFFERLEN))
-@@ -3338,7 +3338,7 @@ static void prepare_config_contents(char *contents)
- bool str_array_contains(const char *haystack, const char *needle)
- {
-   size_t needle_len = strlen(needle);
--  char *pos = strstr(haystack, needle);
-+  const char *pos = strstr(haystack, needle);
-   while (pos) {
-     if (pos == haystack || *(pos - 1) == ',') {
-       char nextc = *(pos + needle_len);

meta-oe/recipes-test/libfaketime/libfaketime/0001-Mark-write-only-real_-pointers-as-unused.patch

@@ -0,0 +1,68 @@
+From d0fd7b4be89feb6a8809216b0dc1d84299bbad96 Mon Sep 17 00:00:00 2001
+From: Khem Raj <khem.raj@oss.qualcomm.com>
+Date: Mon, 7 Sep 2026 19:27:57 -0700
+Subject: [PATCH] Mark write-only real_* pointers as unused
+
+clang 23 added -Wunused-but-set-global, which together with the -Werror
+in src/Makefile breaks the build:
+
+  libfaketime.c:340:23: error: variable 'real_lstat' set but not used
+    [-Werror,-Wunused-but-set-global]
+
+ftpl_init() deliberately resolves every real_* pointer up front ('Look
+up all real_* functions. NULL will mark missing ones.'), but several of
+them are only consumed on other platforms or under build options that
+are off by default, so on Linux/glibc they are written and never read.
+
+Annotate exactly those with __attribute__((unused)). This is understood
+by every gcc and clang that can build libfaketime, unlike a
+-Wno-error=unused-but-set-global flag, which older compilers reject.
+
+Upstream-Status: Pending
+
+Signed-off-by: Khem Raj <khem.raj@oss.qualcomm.com>
+---
+ src/libfaketime.c | 20 ++++++++++----------
+ 1 file changed, 10 insertions(+), 10 deletions(-)
+
+diff --git a/src/libfaketime.c b/src/libfaketime.c
+index e674883..2addaab 100644
+--- a/src/libfaketime.c
++++ b/src/libfaketime.c
+@@ -337,26 +337,26 @@ static __thread bool dont_fake = false;
+ /* pointers to real (not faked) functions */
+ static int          (*real_stat)            (const char *, struct stat *);
+ static int          (*real_fstat)           (int, struct stat *);
+-static int          (*real_lstat)           (const char *, struct stat *);
++static int          (*real_lstat)           (const char *, struct stat *) __attribute__((unused));
+ #ifndef __ANDROID__
+ static int          (*real_xstat)           (int, const char *, struct stat *);
+ static int          (*real_fxstat)          (int, int, struct stat *);
+-static int          (*real_fxstatat)        (int, int, const char *, struct stat *, int);
+-static int          (*real_lxstat)          (int, const char *, struct stat *);
++static int          (*real_fxstatat)        (int, int, const char *, struct stat *, int) __attribute__((unused));
++static int          (*real_lxstat)          (int, const char *, struct stat *) __attribute__((unused));
+ #endif
+ #if !defined(__APPLE__) || !__DARWIN_ONLY_64_BIT_INO_T
+ #ifndef __ANDROID__
+-static int          (*real_stat64)          (const char *, struct stat64 *);
+-static int          (*real_xstat64)         (int, const char *, struct stat64 *);
+-static int          (*real_fxstat64)        (int, int , struct stat64 *);
+-static int          (*real_fxstatat64)      (int, int , const char *, struct stat64 *, int);
+-static int          (*real_lxstat64)        (int, const char *, struct stat64 *);
++static int          (*real_stat64)          (const char *, struct stat64 *) __attribute__((unused));
++static int          (*real_xstat64)         (int, const char *, struct stat64 *) __attribute__((unused));
++static int          (*real_fxstat64)        (int, int , struct stat64 *) __attribute__((unused));
++static int          (*real_fxstatat64)      (int, int , const char *, struct stat64 *, int) __attribute__((unused));
++static int          (*real_lxstat64)        (int, const char *, struct stat64 *) __attribute__((unused));
+ #endif
+ #endif
+ #ifdef STATX_TYPE
+-static int          (*real_statx)           (int dirfd, const char *pathname, int flags, unsigned int mask, struct statx *statxbuf);
++static int          (*real_statx)           (int dirfd, const char *pathname, int flags, unsigned int mask, struct statx *statxbuf) __attribute__((unused));
+ #endif
+-static time_t       (*real_time)            (time_t *);
++static time_t       (*real_time)            (time_t *) __attribute__((unused));
+ #ifndef __ANDROID__
+ static int          (*real_ftime)           (struct timeb *);
+ #endif

meta-oe/recipes-test/libfaketime/libfaketime_0.9.13.bb

@@ -3,10 +3,10 @@ SECTION = "libs"
 LICENSE = "GPL-2.0-only"
 LIC_FILES_CHKSUM = "file://COPYING;md5=b234ee4d69f5fce4486a80fdaf4a4263"
 
-SRCREV = "3ccdd344aadf1e317156fa5fb7c881f2c4404778"
+SRCREV = "86b37fde2fed7336ea2d0c17928e3015a55d9b4a"
 
 SRC_URI = "git://github.com/wolfcw/libfaketime.git;branch=master;tag=v${PV};protocol=https \
-           file://0001-Add-const-qualifiers-to-fix-build-with-ISO-C23.patch \
+           file://0001-Mark-write-only-real_-pointers-as-unused.patch \
 "
 
 CFLAGS:append:libc-musl = " -D_LARGEFILE64_SOURCE"