Add Darwin build

Author: schwicke

.github/workflows/darwin.yml

@@ -0,0 +1,33 @@
+name: OpenPHIGS build CI on Darwin
+
+on:
+  push:
+    branches: [ "main" ]
+  pull_request:
+    branches: [ "main" ]
+
+jobs:
+  build:
+
+    runs-on: macos-latest
+
+    strategy:
+      fail-fast: false
+
+    steps:
+    - uses: actions/checkout@v4
+
+    - name: dependencies
+      run: brew reinstall gcc; brew install --cask xquartz; brew install mesa-glu glfw3 tcsh glew openmotif libXaw
+
+    - name: clean
+      run: make clean
+
+    - name: configure
+      run: make config
+
+    - name: Build
+      run: make build
+
+    - name: Install test
+      run: make install

.github/workflows/makefile.yml .github/workflows/ubuntu.yml.github/workflows/makefile.yml renamed to .github/workflows/ubuntu.yml

@@ -1,4 +1,4 @@
-name: OpenPHIGS build CI
+name: OpenPHIGS build CI on Ubuntu
 
 on:
   push:
@@ -24,7 +24,7 @@ jobs:
     - uses: actions/checkout@v4
 
     - name: dependencies
-      run: sudo apt install cmake gcc g++ gfortran libx11-dev libx11-dev libx11-6 libx11-6 libglu1-mesa libglu1-mesa-dev xutils-dev libmotif-dev libmotif-common r-base-dev tcsh xfonts-100dpi xfonts-75dpi libxfont2  xutils-dev libxbae-dev libxaw7-dev libssl-dev libglew-dev libdlm-dev
+      run: sudo apt install cmake gcc gfortran libx11-dev libglu1-mesa-dev libmotif-dev tcsh libxaw7-dev libglew-dev libdlm-dev
 
     - name: clean
       run: make clean