fixed #14491 - bumped minimum CMake version to 3.16

Author: firewave

.github/workflows/CI-unixish.yml

@@ -21,8 +21,8 @@ jobs:
     runs-on: ubuntu-22.04
 
     env:
-      CMAKE_VERSION: 3.13
-      CMAKE_VERSION_FULL: 3.13.5
+      CMAKE_VERSION: 3.16
+      CMAKE_VERSION_FULL: 3.16.9
 
     steps:
       - uses: actions/checkout@v4

CMakeLists.txt

@@ -1,4 +1,4 @@
-cmake_minimum_required(VERSION 3.13)
+cmake_minimum_required(VERSION 3.16)
 project(Cppcheck VERSION 2.18.99 LANGUAGES CXX)
 
 include(cmake/options.cmake)

cmake/options.cmake

@@ -113,14 +113,10 @@ option(ENABLE_CSA_ALPHA     "Enable Clang Static Analyzer alpha checkers for run
 # TODO: disable by default like make build?
 option(FILESDIR "Hard-coded directory for files to load from"                               OFF)
 
-if(CMAKE_VERSION VERSION_GREATER_EQUAL "3.16")
-    set(CMAKE_DISABLE_PRECOMPILE_HEADERS Off CACHE BOOL "Disable precompiled headers")
-    # need to disable the prologue or it will be treated like a system header and not emit any warnings
-    # see https://gitlab.kitware.com/cmake/cmake/-/issues/21219
-    set(CMAKE_PCH_PROLOGUE "")
-else()
-    set(CMAKE_DISABLE_PRECOMPILE_HEADERS On CACHE BOOL "Disable precompiled headers")
-endif()
+set(CMAKE_DISABLE_PRECOMPILE_HEADERS Off CACHE BOOL "Disable precompiled headers")
+# need to disable the prologue or it will be treated like a system header and not emit any warnings
+# see https://gitlab.kitware.com/cmake/cmake/-/issues/21219
+set(CMAKE_PCH_PROLOGUE "")
 
 set(CMAKE_INCLUDE_DIRS_CONFIGCMAKE ${CMAKE_INSTALL_PREFIX}/include      CACHE PATH "Output directory for headers")
 set(CMAKE_LIB_DIRS_CONFIGCMAKE     ${CMAKE_INSTALL_PREFIX}/lib          CACHE PATH "Output directory for libraries")

releasenotes.txt

@@ -22,4 +22,5 @@ Infrastructure & dependencies:
 
 Other:
 - The built-in "win*" and "unix*" platforms will now default to signed char type instead of unknown signedness. If you require unsigned chars please specify "--funsigned-char"
+- bumped minimum required CMake version to 3.16
 -