build: Bump cmake version to 3.5.0

This includes the changes from polybar/xpp#30 which also updates the
minimum cmake version in the xpp submodule

CHANGELOG.md

@@ -18,6 +18,9 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
   This does not affect you unless you are producing your own formatting tags
   (for example in a script) and you are using one of these invalid tags.
 
+### Build
+- Bump the minimum cmake version to 3.5
+
 ### Added
 - Warn states for the cpu, memory, fs, and battery modules.
   ([`#570`](https://github.com/polybar/polybar/issues/570),

CMakeLists.txt

@@ -1,7 +1,7 @@
 #
 # Build configuration
 #
-cmake_minimum_required(VERSION 3.1.0 FATAL_ERROR)
+cmake_minimum_required(VERSION 3.5.0 FATAL_ERROR)
 
 # Enable ccache by default and as early as possible because project() performs
 # checks on the compiler

cmake/modules/FindXcb.cmake

@@ -32,12 +32,8 @@ endforeach()
 set(XCB_XRM_header "xcb/xcb_xrm.h")
 set(XCB_CURSOR_header "xcb/xcb_cursor.h")
 
-cmake_policy(PUSH)
-cmake_policy(SET CMP0057 NEW)
-
 foreach(_comp ${Xcb_FIND_COMPONENTS})
   if (NOT ${_comp} IN_LIST XCB_known_components)
-    cmake_policy(POP)
     message(FATAL_ERROR "Unknow component \"${_comp}\" of XCB")
   endif()
 
@@ -58,9 +54,6 @@ foreach(_comp ${Xcb_FIND_COMPONENTS})
   if(Xcb_${_comp}_FOUND AND NOT TARGET Xcb::${_comp})
     create_imported_target("Xcb::${_comp}" "${Xcb_${_comp}_INCLUDE_DIRS}" "${Xcb_${_comp}_LIBRARIES}")
   elseif(NOT Xcb_${_comp}_FOUND AND Xcb_FIND_REQUIRED)
-    cmake_policy(POP)
     message(FATAL_ERROR "Xcb: Required component \"${_comp}\" is not found")
   endif()
 endforeach()
-
-cmake_policy(POP)

doc/CMakeLists.txt

@@ -1,4 +1,4 @@
-cmake_minimum_required(VERSION 3.1.0 FATAL_ERROR)
+cmake_minimum_required(VERSION 3.5.0 FATAL_ERROR)
 
 # Only used if documentation is built on its own
 project(polybar-doc NONE)

lib/xpp

@@ -1 +1 @@
-Subproject commit 044e69d05db7f89339bda1ccd1efe0263b01c8f6
+Subproject commit 4d67025cdbcc7f3c65d1a620c97a8443e0a08129

tests/CMakeLists.txt.in

@@ -1,4 +1,4 @@
-cmake_minimum_required(VERSION 3.1.0)
+cmake_minimum_required(VERSION 3.5.0 FATAL_ERROR)
 
 project(googletest-download NONE)