gflags: Add patch for CMake 4+ compatibility

Fix:

| CMake Error at CMakeLists.txt:73 (cmake_minimum_required):
|   Compatibility with CMake < 3.5 has been removed from CMake.
|
|   Update the VERSION argument <min> value.  Or, use the <min>...<max> syntax
|   to tell CMake that the project requires at least <min> but has been updated
|   to work with policies introduced by <max> or earlier.
|
|   Or, add -DCMAKE_POLICY_VERSION_MINIMUM=3.5 to try configuring anyway.
|
|
| -- Configuring incomplete, errors occurred!

Signed-off-by: Alper Ak <alperyasinak1@gmail.com>
Signed-off-by: Khem Raj <raj.khem@gmail.com>

meta-oe/recipes-support/gflags/gflags/0001-allow-build-with-cmake-4.patch

@@ -0,0 +1,69 @@
+From b533cf275db99b1d37ba20d96497cafcedc9ace0 Mon Sep 17 00:00:00 2001
+From: Alper Ak <alperyasinak1@gmail.com>
+Date: Tue, 8 Jul 2025 18:57:26 +0300
+Subject: [PATCH] cmake: Set minimum required version to 3.5 for CMake 4+
+ compatibility
+
+Fix:
+
+| CMake Error at CMakeLists.txt:73 (cmake_minimum_required):
+|   Compatibility with CMake < 3.5 has been removed from CMake.
+|
+|   Update the VERSION argument <min> value.  Or, use the <min>...<max> syntax
+|   to tell CMake that the project requires at least <min> but has been updated
+|   to work with policies introduced by <max> or earlier.
+|
+|   Or, add -DCMAKE_POLICY_VERSION_MINIMUM=3.5 to try configuring anyway.
+|
+|
+| -- Configuring incomplete, errors occurred!
+
+Upstream-Status: Backport [https://github.com/gflags/gflags/commit/70c01a642f08734b7bddc9687884844ca117e080]
+
+Signed-off-by: Alper Ak <alperyasinak1@gmail.com>
+---
+ CMakeLists.txt             | 2 +-
+ test/config/CMakeLists.txt | 2 +-
+ test/nc/CMakeLists.txt     | 2 +-
+ 3 files changed, 3 insertions(+), 3 deletions(-)
+
+diff --git a/CMakeLists.txt b/CMakeLists.txt
+index 657a1f4..a5440bb 100644
+--- a/CMakeLists.txt
++++ b/CMakeLists.txt
+@@ -70,7 +70,7 @@
+ ## - GFLAGS_INSTALL_SHARED_LIBS
+ ## - GFLAGS_INSTALL_STATIC_LIBS
+ 
+-cmake_minimum_required (VERSION 3.0.2 FATAL_ERROR)
++cmake_minimum_required (VERSION 3.5 FATAL_ERROR)
+ 
+ if (POLICY CMP0042)
+   cmake_policy (SET CMP0042 NEW)
+diff --git a/test/config/CMakeLists.txt b/test/config/CMakeLists.txt
+index 6190b25..205121e 100644
+--- a/test/config/CMakeLists.txt
++++ b/test/config/CMakeLists.txt
+@@ -1,6 +1,6 @@
+ ## gflags package configuration tests
+ 
+-cmake_minimum_required (VERSION 2.8.12 FATAL_ERROR)
++cmake_minimum_required (VERSION 3.5 FATAL_ERROR)
+ 
+ project (gflags_${TEST_NAME})
+ 
+diff --git a/test/nc/CMakeLists.txt b/test/nc/CMakeLists.txt
+index d00b07d..1b4d511 100644
+--- a/test/nc/CMakeLists.txt
++++ b/test/nc/CMakeLists.txt
+@@ -1,6 +1,6 @@
+ ## gflags negative compilation tests
+ 
+-cmake_minimum_required (VERSION 2.8.12 FATAL_ERROR)
++cmake_minimum_required (VERSION 3.5 FATAL_ERROR)
+ 
+ if (NOT TEST_NAME)
+   message (FATAL_ERROR "Missing TEST_NAME CMake flag")
+-- 
+2.43.0
+

meta-oe/recipes-support/gflags/gflags_2.2.2.bb

@@ -3,10 +3,10 @@ HOMEPAGE = "https://github.com/gflags/gflags"
 LICENSE = "BSD-3-Clause"
 LIC_FILES_CHKSUM = "file://COPYING.txt;md5=c80d1a3b623f72bb85a4c75b556551df"
 
-SRC_URI = "git://github.com/gflags/gflags.git;branch=master;protocol=https"
+SRC_URI = "git://github.com/gflags/gflags.git;branch=master;protocol=https \
+        file://0001-allow-build-with-cmake-4.patch"
 SRCREV = "e171aa2d15ed9eb17054558e0b3a6a413bb01067"
 
-
 inherit cmake
 
 EXTRA_OECMAKE = "-DBUILD_SHARED_LIBS=ON -DREGISTER_INSTALL_PREFIX=OFF -DLIB_INSTALL_DIR=${baselib}"