cppgenerate: Add patch for CMake 4+ compatibility

Fix:

| CMake Error at CMakeLists.txt:6 (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>

2 files changed, 46 insertions, 2 deletions

diff --git a/meta-oe/recipes-devtools/cppgenerate/cppgenerate/0001-allow-build-with-cmake-4.patch b/meta-oe/recipes-devtools/cppgenerate/cppgenerate/0001-allow-build-with-cmake-4.patch
new file mode 100644
index 0000000000..419a9c0b5d
--- /dev/null
+++ b/meta-oe/recipes-devtools/cppgenerate/cppgenerate/0001-allow-build-with-cmake-4.patch
@@ -0,0 +1,43 @@
+From c7df183e6c34171fc4ce316c049ce69e87ae38a1 Mon Sep 17 00:00:00 2001
+From: Alper Ak <alperyasinak1@gmail.com>
+Date: Wed, 9 Jul 2025 13:39:08 +0300
+Subject: [PATCH] cmake: Set minimum required version to 3.5 for CMake 4+
+ compatibility
+
+Fix:
+
+| CMake Error at CMakeLists.txt:6 (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: Submitted [https://github.com/rm5248/libcppgenerate/pull/11]
+
+Signed-off-by: Alper Ak <alperyasinak1@gmail.com>
+---
+ CMakeLists.txt | 2 +-
+ 1 file changed, 1 insertion(+), 1 deletion(-)
+
+diff --git a/CMakeLists.txt b/CMakeLists.txt
+index bec9d86..00b4abf 100644
+--- a/CMakeLists.txt
++++ b/CMakeLists.txt
+@@ -3,7 +3,7 @@
+ #
+ # Copyright 2018 Robert Middleton robert.middleton@rm5248.com
+ #
+-cmake_minimum_required( VERSION 3.1 )
++cmake_minimum_required( VERSION 3.5 )
+ 
+ project( libcppgenerate VERSION 0.3)
+ 
+-- 
+2.43.0
+
diff --git a/meta-oe/recipes-devtools/cppgenerate/cppgenerate_0.3.bb b/meta-oe/recipes-devtools/cppgenerate/cppgenerate_0.3.bb
index 6e709b6e7e..edb5538425 100644
--- a/meta-oe/recipes-devtools/cppgenerate/cppgenerate_0.3.bb
+++ b/meta-oe/recipes-devtools/cppgenerate/cppgenerate_0.3.bb
@@ -4,9 +4,10 @@ SECTION = "libs"
 LICENSE = "Apache-2.0"
 LIC_FILES_CHKSUM = "file://LICENSE;md5=fa818a259cbed7ce8bc2a22d35a464fc"
 
-SRC_URI = "git://github.com/rm5248/libcppgenerate.git;branch=master;protocol=https"
-SRCREV = "930c5503f76c877b72b9ff8546353d6f422bd010"
+SRC_URI = "git://github.com/rm5248/libcppgenerate.git;branch=master;protocol=https \
+        file://0001-allow-build-with-cmake-4.patch"
 
+SRCREV = "930c5503f76c877b72b9ff8546353d6f422bd010"
 
 inherit cmake