Compress base.img using FastLZ library

FastLZ/.github/workflows/amd64_macos_gcc.yml

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+name: amd64_macos_gcc
+
+on: [push, pull_request]
+
+jobs:
+
+  amd64_macos_gcc:
+    runs-on: macos-12
+    timeout-minutes: 10
+    env:
+      CC: gcc-9
+    steps:
+    - uses: actions/checkout@v3
+    - name: Retrieve test compression corpus
+      run: |
+        git clone https://github.com/ariya/compression-corpus.git
+        cd compression-corpus
+        cd enwik
+        unzip enwik8.zip
+    - run: brew install gcc@9
+    - run: gcc-9 --version
+    - run: cd tests && make roundtrip
+      name: Perform round-trip tests
+    - name: 'Build examples: 6pack and 6unpack'
+      run: cd examples && make
+    - name: 'Run examples: 6pack and 6unpack'
+      run: |
+        cd examples
+        ./6pack -v
+        ./6pack ../compression-corpus/enwik/enwik8.txt archive.6pk
+        ./6unpack -v
+        ./6unpack archive.6pk