Build option to enable/disable update check (symless#24)

* Add option to enable SYNERGY_VERSION_CHECK in CMake

* Add SYNERGY_VERSION_CHECK to CI workflow CMake commands

Author: nbolton

.github/workflows/ci.yml

@@ -98,7 +98,8 @@ jobs:
           cmake -B build `
           --preset=windows-release `
           -DUSE_TOMLPLUSPLUS=OFF `
-          -DUSE_CLI11=OFF
+          -DUSE_CLI11=OFF `
+          -DSYNERGY_VERSION_CHECK=${{ vars.SYNERGY_VERSION_CHECK }}
 
       - name: Build
         run: cmake --build build -j8
@@ -180,7 +181,8 @@ jobs:
           cmake -B build \
           --preset=macos-release \
           -DUSE_TOMLPLUSPLUS=OFF \
-          -DUSE_CLI11=OFF
+          -DUSE_CLI11=OFF \
+          -DSYNERGY_VERSION_CHECK=${{ vars.SYNERGY_VERSION_CHECK }}
 
       - name: Build
         run: cmake --build build -j8
@@ -290,7 +292,8 @@ jobs:
           cmake -B build \
           --preset=linux-release ${{ matrix.distro.extra-cmake-args }} \
           -DUSE_TOMLPLUSPLUS=OFF \
-          -DUSE_CLI11=OFF
+          -DUSE_CLI11=OFF \
+          -DSYNERGY_VERSION_CHECK=${{ vars.SYNERGY_VERSION_CHECK }}
 
       - name: Build
         run: cmake --build build -j8

CMakeLists.txt

@@ -17,6 +17,11 @@ cmake_minimum_required(VERSION 3.8)
 
 project(synergy C CXX)
 
+option(SYNERGY_VERSION_CHECK "Enable version check" ON)
+if (SYNERGY_VERSION_CHECK)
+  add_definitions(-DSYNERGY_VERSION_CHECK)
+endif()
+
 include(cmake/Odin.cmake)
 include(cmake/Licensing.cmake)
 include(cmake/Build.cmake)