[PATCH v3 6/6] ltp: workaround openat2 build failure with glibc 2.43

[Hemanth.KumarMD@windriver.com]

From: Hemanth Kumar M D <Hemanth.KumarMD@windriver.com>

glibc 2.43 added native openat2() support, causing LTP's configure to
set HAVE_OPENAT2=1 and skip its own internal definitions, resulting in
a build failure. Add a patch to undef HAVE_OPENAT2 in lapi/openat2.h
as a workaround until a proper fix is found.

Signed-off-by: Hemanth Kumar M D <Hemanth.KumarMD@windriver.com>
---
 ...tp-fix-build-failure-with-glibc-2.43.patch | 33 +++++++++++++++++++
 meta/recipes-extended/ltp/ltp_20260130.bb     |  1 +
 2 files changed, 34 insertions(+)
 create mode 100644 meta/recipes-extended/ltp/ltp/0001-ltp-fix-build-failure-with-glibc-2.43.patch

diff --git a/meta/recipes-extended/ltp/ltp/0001-ltp-fix-build-failure-with-glibc-2.43.patch b/meta/recipes-extended/ltp/ltp/0001-ltp-fix-build-failure-with-glibc-2.43.patch
new file mode 100644
index 0000000000..7c78660e3e
--- /dev/null
+++ b/meta/recipes-extended/ltp/ltp/0001-ltp-fix-build-failure-with-glibc-2.43.patch
@@ -0,0 +1,33 @@
+ltp: fix build failure with glibc 2.43
+
+glibc 2.43 added native openat2() support for the first time. This
+caused compatibility issues with LTP's internal openat2 definitions
+in lapi/openat2.h. LTP's configure detects glibc's openat2() and
+sets HAVE_OPENAT2=1, causing lapi/openat2.h to skip its own
+definitions of struct open_how, RESOLVE_* constants and the openat2()
+wrapper, resulting in a build failure.
+
+Undef HAVE_OPENAT2 in lapi/openat2.h to force LTP to always use its
+own internal definitions.this is a workaround until the fix is found.
+
+Upstream-Status: Pending
+
+Signed-off-by: Hemanth Kumar M D <Hemanth.KumarMD@windriver.com>
+
+diff --git a/include/lapi/openat2.h b/include/lapi/openat2.h
+index 03327bdb7..bd44573c9 100644
+--- a/include/lapi/openat2.h
++++ b/include/lapi/openat2.h
+@@ -14,6 +14,11 @@
+
+ #include "config.h"
+
++/* glibc 2.43 provides openat2 but LTP uses its own syscall wrapper */
++#ifdef HAVE_OPENAT2
++#undef HAVE_OPENAT2
++#endif
++
+ #ifndef HAVE_OPENAT2
+ /*
+  * Arguments for how openat2(2) should open the target path. If only @flags and
+
diff --git a/meta/recipes-extended/ltp/ltp_20260130.bb b/meta/recipes-extended/ltp/ltp_20260130.bb
index bb3b7e9ca3..75c5b8b7bd 100644
--- a/meta/recipes-extended/ltp/ltp_20260130.bb
+++ b/meta/recipes-extended/ltp/ltp_20260130.bb
@@ -30,6 +30,7 @@ SRC_URI = "git://github.com/linux-test-project/ltp.git;branch=master;protocol=ht
            file://0001-Remove-OOM-tests-from-runtest-mm.patch \
            file://0001-Add-__clear_cache-declaration-for-clang.patch \
            file://0001-syscalls-semctl08-Skip-semctl08-when-__USE_TIME64_RE.patch \
+           file://0001-ltp-fix-build-failure-with-glibc-2.43.patch \
           "
 
 inherit autotools-brokensep pkgconfig
-- 
2.49.0