Fix GHA build test

.github/workflows/cmake.yml

@@ -18,10 +18,6 @@ env:
 
 jobs:
   build:
-    # The CMake configure and build commands are platform agnostic and should work equally
-    # well on Windows or Mac.  You can convert this to a matrix build if you need
-    # cross-platform coverage.
-    # See: https://docs.github.com/en/free-pro-team@latest/actions/learn-github-actions/managing-complex-workflows#using-a-build-matrix
     runs-on: ubuntu-latest
     container: ubuntu:latest
 
@@ -91,59 +87,14 @@ jobs:
         cmake .
         cmake --build .
 
-  build_2_8:
-    # The CMake configure and build commands are platform agnostic and should work equally
-    # well on Windows or Mac.  You can convert this to a matrix build if you need
-    # cross-platform coverage.
-    # See: https://docs.github.com/en/free-pro-team@latest/actions/learn-github-actions/managing-complex-workflows#using-a-build-matrix
-    runs-on: ubuntu-latest
-    container: ubuntu:14.04
-
-    steps:
-    - uses: actions/checkout@v2
-      
-    - name: Install dependencies
-      run: apt update && apt install -y cmake gcc libgl1-mesa-dev libx11-dev libxext-dev
-
-    - name: Configure CMake
-      shell: bash
-      run: cmake . -DCMAKE_BUILD_TYPE=$BUILD_TYPE
-
-    - name: Build test
-      shell: bash
-      run: cmake --build .
-
-    - name: Check alias
-      shell: bash
-      run: test -e lib/libGLEW.a
-
-  build_3_10:
-    # The CMake configure and build commands are platform agnostic and should work equally
-    # well on Windows or Mac.  You can convert this to a matrix build if you need
-    # cross-platform coverage.
-    # See: https://docs.github.com/en/free-pro-team@latest/actions/learn-github-actions/managing-complex-workflows#using-a-build-matrix
-    runs-on: ubuntu-latest
-    container: ubuntu:18.04
-
-    steps:
-    - uses: actions/checkout@v2
-      
-    - name: Install dependencies
-      run: apt update && apt install -y cmake gcc libgl1-mesa-dev libx11-dev libxext-dev
-
-    - name: Configure CMake
-      shell: bash
-      run: cmake . -DCMAKE_BUILD_TYPE=$BUILD_TYPE
-
-    - name: Build test
-      shell: bash
-      run: cmake --build .
-      
-    - name: Check alias
-      shell: bash
-      run: test -e lib/libGLEW.a
-
-  build_latest:
+  build_linux:
+    strategy:
+      fail-fast: false
+      matrix:
+        cmake:
+          - 2.8.12.2
+          - 3.10.3
+          - latest
     runs-on: ubuntu-latest
     container: ubuntu:latest
 
@@ -151,7 +102,21 @@ jobs:
     - uses: actions/checkout@v2
 
     - name: Install dependencies
-      run: apt update && apt install -y python3 python3-pip gcc libgl1-mesa-dev libx11-dev libxext-dev && pip install cmake
+      shell: bash
+      run: |
+        cmake=${{ matrix.cmake }}
+        apt update
+        apt install -y wget gcc libgl1-mesa-dev libx11-dev libxext-dev
+        if [ "${cmake}" == "latest" ]; then
+          apt install -y git
+          cmake=$(git ls-remote --tags https://gitlab.kitware.com/cmake/cmake | cut -f 2 | sed -E "s/^refs\/tags\/v//" | tr -d "^{}" | sort -t '.' -k 1,1n -k 2,2n -k 3,3n | tail -n 1 | tr -d "\n")
+          echo "Latest version: ${cmake}"
+        fi
+        short_version=$(echo "${cmake}" | sed -E "s/^([0-9]+\\.[0-9]+)\\..+$/\\1/" | tr -d "\n")
+        wget https://cmake.org/files/v${short_version}/cmake-${cmake}.tar.gz
+        tar -xf cmake-${cmake}.tar.gz
+        cd cmake-${cmake}
+        ./configure && make -j $(nproc) install
 
     - name: Configure CMake
       shell: bash
@@ -166,12 +131,8 @@ jobs:
       run: test -e lib/libGLEW.a
 
   build_mingw:
-    # The CMake configure and build commands are platform agnostic and should work equally
-    # well on Windows or Mac.  You can convert this to a matrix build if you need
-    # cross-platform coverage.
-    # See: https://docs.github.com/en/free-pro-team@latest/actions/learn-github-actions/managing-complex-workflows#using-a-build-matrix
     runs-on: ubuntu-latest
-    container: ubuntu:18.04
+    container: ubuntu:latest
 
     steps:
     - uses: actions/checkout@v2