(build) install dependencies needed for Mac and Linux builds

.github/workflows/build.yml

@@ -16,29 +16,25 @@ jobs:
         os: [ubuntu-latest, macos-latest]
 
     steps:
-    #- name: Install dependencies (macOS)
-     # if: runner.os == 'macOS'
-     # run: |
-     #   brew install cairo
-     #   brew install pkg-config
-     #   brew install libx11
-     #   brew install freetype
-     #   brew install fontconfig
+    - name: Install dependencies (macOS)
+      if: runner.os == 'macOS'
+      run: |
+        brew install cairo
+        brew install pkg-config
+        brew install libx11
+        brew install freetype
+        brew install fontconfig
 
     #- name: Install dependencies (Ubuntu)
-    #  if: runner.os == 'Linux'
-      #run: |
-      #  sudo apt-get update
-      #  sudo apt-get install -y libcairo2-dev
-      #  sudo apt-get install -y libx11-dev
-      #  sudo apt-get install -y pkg-config
-      #  sudo apt-get install -y libfreetype6-dev
-      #  sudo apt-get install -y libfontconfig1-dev
-
-    - name: Install gfortran compiler
-      uses: fortran-lang/setup-fortran@v1
-      with:
-         compiler: gcc
+      if: runner.os == 'Linux'
+      run: |
+        sudo apt-get update
+        sudo apt-get install -y gfortran
+        sudo apt-get install -y libcairo2-dev
+        sudo apt-get install -y libx11-dev
+        sudo apt-get install -y pkg-config
+        sudo apt-get install -y libfreetype6-dev
+        sudo apt-get install -y libfontconfig1-dev
 
     - name: Check gfortran version
       run: gfortran --version