zlog: upgrade 1.2.16 -> 1.2.18

Switched to cmake. Added a backported patch to be able to use
the latest version of cmake.

Also, add a new patch to avoid overwritingg all the CFLAGS set by Yocto,
which helps with avoiding the inclusion of TMPDIR in the generated files.

License-Update: License changed to Apache2:
https://github.com/HardySimpson/zlog/commit/1a7b1a6fb956b92a4079ccc91f30da21f34ca063

Changelog:
1.2.18:
- patched severe vulnerability CVE-2024-22857
- restructured build system

1.2.17:
- Change Lience to Apache 2.0, for more people

Signed-off-by: Gyorgy Sarvari <skandigraun@gmail.com>
Signed-off-by: Khem Raj <raj.khem@gmail.com>

2 files changed, 56 insertions, 0 deletions

diff --git a/meta-oe/recipes-extended/zlog/files/0001-Don-t-overwrite-systemwide-cflags.patch b/meta-oe/recipes-extended/zlog/files/0001-Don-t-overwrite-systemwide-cflags.patch
new file mode 100644
index 0000000000..f09f517b98
--- /dev/null
+++ b/meta-oe/recipes-extended/zlog/files/0001-Don-t-overwrite-systemwide-cflags.patch
@@ -0,0 +1,31 @@
+From ee35b6507993e79fc594e3b7ad50174e33e68daa Mon Sep 17 00:00:00 2001
+From: Gyorgy Sarvari <skandigraun@gmail.com>
+Date: Wed, 24 Sep 2025 11:22:29 +0200
+Subject: [PATCH] Don't overwrite systemwide cflags
+
+Instead of overriding the cflags from the system, just append to them.
+
+Upstream-Status: Submitted [https://github.com/HardySimpson/zlog/pull/306]
+
+Signed-off-by: Gyorgy Sarvari <skandigraun@gmail.com>
+---
+ CMakeLists.txt | 6 +++---
+ 1 file changed, 3 insertions(+), 3 deletions(-)
+
+diff --git a/CMakeLists.txt b/CMakeLists.txt
+index 8981934..f2bd574 100644
+--- a/CMakeLists.txt
++++ b/CMakeLists.txt
+@@ -33,9 +33,9 @@ SET(ZLOG_SO_VERSION ${CPACK_PACKAGE_VERSION_MAJOR})
+ message(STATUS "platform : ${CMAKE_SYSTEM}")
+ 
+ add_definitions("-g -Wall -Wstrict-prototypes")
+-set(CMAKE_C_FLAGS "-std=c99 -pedantic -D_DEFAULT_SOURCE")
+-set(CMAKE_C_FLAGS_DEBUG "-ggdb3 -DDEBUG")
+-set(CMAKE_C_FLAGS_RELEASE "-O2")
++set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -std=c99 -pedantic -D_DEFAULT_SOURCE")
++set(CMAKE_C_FLAGS_DEBUG "${CMAKE_C_FLAGS_DEBUG} -ggdb3 -DDEBUG")
++set(CMAKE_C_FLAGS_RELEASE "${CMAKE_C_FLAGS_RELEASE} -O2")
+ 
+ if (WIN32)
+     set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -DWINVER=0x0500 -D_WIN32_WINNT=0x0500 ")
diff --git a/meta-oe/recipes-extended/zlog/files/upgrade_cmake_minimum_version.patch b/meta-oe/recipes-extended/zlog/files/upgrade_cmake_minimum_version.patch
new file mode 100644
index 0000000000..9d02066d57
--- /dev/null
+++ b/meta-oe/recipes-extended/zlog/files/upgrade_cmake_minimum_version.patch
@@ -0,0 +1,25 @@
+From 3715879775f725260aeda14f94887bbc7a007e29 Mon Sep 17 00:00:00 2001
+From: haydenZhou <mfkhao2009@outlook.com>
+Date: Sun, 8 Jun 2025 10:45:05 +0800
+Subject: [PATCH] upgrade cmake minimum version
+
+Upstream-Status: Backport [https://github.com/HardySimpson/zlog/commit/3715879775f725260aeda14f94887bbc7a007e29]
+
+Signed-off-by: Gyorgy Sarvari <skandigraun@gmail.com>
+---
+ CMakeLists.txt | 2 +-
+ 1 file changed, 1 insertion(+), 1 deletion(-)
+
+diff --git a/CMakeLists.txt b/CMakeLists.txt
+index 5ddaf8d..31a1553 100644
+--- a/CMakeLists.txt
++++ b/CMakeLists.txt
+@@ -14,7 +14,7 @@
+ # limitations under the License.
+ #/
+ 
+-cmake_minimum_required(VERSION 2.8.5)
++cmake_minimum_required(VERSION 3.12)
+ 
+ message(STATUS "path : ${CMAKE_FIND_ROOT_PATH}")
+ project(zlog)