Require cmake 3.5 to avoid deprecation warnings (#393)

.github/workflows/build_and_test.yml

@@ -95,9 +95,9 @@ jobs:
         working-directory: yubihsm-shell
         if: ${{ matrix.environment == 'ubuntu:14.04' }}
         run: |
-          # ubuntu 14.04 comes with cmake version 2.8, but the project requires 3.1
+          # ubuntu 14.04 comes with cmake version 2.8, but the project requires 3.5
           # we downgrade that requirement for the ubuntu 14.04 build
-          sed -i 's/cmake_minimum_required (VERSION 3.1)/cmake_minimum_required (VERSION 2.8)/' CMakeLists.txt
+          sed -i 's/cmake_minimum_required (VERSION 3.5)/cmake_minimum_required (VERSION 2.8)/' CMakeLists.txt
           # we also remove the following policies which are not supported in the older cmake version
           sed -i 's/cmake_policy(SET CMP0025 NEW)/#cmake_policy(SET CMP0025 NEW)/' CMakeLists.txt
           sed -i 's/cmake_policy(SET CMP0042 NEW)/#cmake_policy(SET CMP0042 NEW)/' CMakeLists.txt
@@ -220,9 +220,9 @@ jobs:
         working-directory: yubihsm-shell
         if: ${{ matrix.environment == 'centos:7' }}
         run: |
-          # centos 7 comes with cmake version 2.8, but the project requires 3.1
+          # centos 7 comes with cmake version 2.8, but the project requires 3.5
           # we downgrade that requirement for the centos 7 build
-          sed -i 's/cmake_minimum_required (VERSION 3.1)/cmake_minimum_required (VERSION 2.8)/' CMakeLists.txt
+          sed -i 's/cmake_minimum_required (VERSION 3.5)/cmake_minimum_required (VERSION 2.8)/' CMakeLists.txt
           # we also remove the following policies which are not supported in the older cmake version
           sed -i 's/cmake_policy(SET CMP0025 NEW)/#cmake_policy(SET CMP0025 NEW)/' CMakeLists.txt
           sed -i 's/cmake_policy(SET CMP0042 NEW)/#cmake_policy(SET CMP0042 NEW)/' CMakeLists.txt

.github/workflows/release.yml

@@ -193,9 +193,9 @@ jobs:
         working-directory: yubihsm-shell
         if: ${{ matrix.environment == 'ubuntu:14.04' }}
         run: |
-          # ubuntu 14.04 comes with cmake version 2.8, but the project requires 3.1
+          # ubuntu 14.04 comes with cmake version 2.8, but the project requires 3.5
           # we downgrade that requirement for the ubuntu 14.04 build
-          sed -i 's/cmake_minimum_required (VERSION 3.1)/cmake_minimum_required (VERSION 2.8)/' CMakeLists.txt
+          sed -i 's/cmake_minimum_required (VERSION 3.5)/cmake_minimum_required (VERSION 2.8)/' CMakeLists.txt
           # we also remove the following policies which are not supported in the older cmake version
           sed -i 's/cmake_policy(SET CMP0025 NEW)/#cmake_policy(SET CMP0025 NEW)/' CMakeLists.txt
           sed -i 's/cmake_policy(SET CMP0042 NEW)/#cmake_policy(SET CMP0042 NEW)/' CMakeLists.txt
@@ -293,9 +293,9 @@ jobs:
         working-directory: yubihsm-shell
         if: ${{ matrix.environment == 'centos:7' }}
         run: |
-          # centos 7 comes with cmake version 2.8, but the project requires 3.1
+          # centos 7 comes with cmake version 2.8, but the project requires 3.5
           # we downgrade that requirement for the centos 7 build
-          sed -i 's/cmake_minimum_required (VERSION 3.1)/cmake_minimum_required (VERSION 2.8)/' CMakeLists.txt
+          sed -i 's/cmake_minimum_required (VERSION 3.5)/cmake_minimum_required (VERSION 2.8)/' CMakeLists.txt
           # we also remove the following policies which are not supported in the older cmake version
           sed -i 's/cmake_policy(SET CMP0025 NEW)/#cmake_policy(SET CMP0025 NEW)/' CMakeLists.txt
           sed -i 's/cmake_policy(SET CMP0042 NEW)/#cmake_policy(SET CMP0042 NEW)/' CMakeLists.txt

CMakeLists.txt

@@ -14,7 +14,7 @@
 # limitations under the License.
 #
 
-cmake_minimum_required (VERSION 3.1)
+cmake_minimum_required (VERSION 3.5)
 # policy CMP0025 is to get AppleClang identifier rather than Clang for both
 # this matters since the apple compiler accepts different flags.
 cmake_policy(SET CMP0025 NEW)