diff --git a/.github/scripts/macOS/build-qt.sh b/.github/scripts/macOS/build-qt.sh
new file mode 100755
index 000000000..b497f4060
--- /dev/null
+++ b/.github/scripts/macOS/build-qt.sh
@@ -0,0 +1,10 @@
+#!/bin/bash
+
+set -ex
+
+wget --no-verbose https://download.qt.io/archive/qt/5.13/5.13.2/single/qt-everywhere-src-5.13.2.tar.xz
+tar xJf qt-everywhere-src-5.13.2.tar.xz
+cd qt-everywhere-src-5.13.2
+./configure -static -release -nomake examples -opensource -confirm-license -opengl -prefix /usr/local/opt/qt
+make -j 3 && sudo make install
+
diff --git a/.github/scripts/macOS/prepare.sh b/.github/scripts/macOS/prepare.sh
new file mode 100755
index 000000000..7a6335429
--- /dev/null
+++ b/.github/scripts/macOS/prepare.sh
@@ -0,0 +1,36 @@
+#!/bin/bash
+
+set -ex
+
+echo "::set-env name=AJA_DIRECTORY::/var/tmp/ntv2sdk"
+echo "::set-env name=UG_SKIP_NET_TESTS::1"
+echo "::set-env name=CPATH::/usr/local/include:/usr/local/opt/qt/include"
+echo "::set-env name=LIBRARY_PATH::/usr/local/lib:/usr/local/opt/qt/lib"
+echo "::set-env name=PKG_CONFIG_PATH::/usr/local/lib/pkgconfig:/usr/local/opt/qt/lib/pkgconfig"
+echo "::set-env name=SDKROOT::macosx10.14" # SDK 10.15 crashes Qt in High Sierra
+echo "::add-path::/usr/local/opt/qt/bin"
+
+curl -LO https://github.com/phracker/MacOSX-SDKs/releases/download/10.14-beta4/MacOSX10.14.sdk.tar.xz
+tar xJf MacOSX10.14.sdk.tar.xz
+mv MacOSX10.14.sdk /Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs
+brew install autoconf automake cppunit dylibbundler libtool pkg-config
+brew install ffmpeg portaudio sdl2
+brew install ossp-uuid # for cineform
+( cd cineform-sdk/ && cmake . && make CFHDCodecStatic )
+
+# Install XIMEA
+if [ -z "$sdk_pass" ]; then exit 0; fi
+curl --netrc-file <(cat <<<"machine frakira.fi.muni.cz login sdk password $sdk_pass") https://frakira.fi.muni.cz/~xpulec/sdks/m3api.tar.xz -O
+sudo tar xJf m3api.tar.xz -C $(xcrun --show-sdk-path)/$SDKPATH/System/Library/Frameworks
+
+# Install AJA
+if [ -z "$sdk_pass" ]; then exit 0; fi
+curl --netrc-file <(cat <<<"machine frakira.fi.muni.cz login sdk password $sdk_pass") https://frakira.fi.muni.cz/~xpulec/sdks/ntv2sdkmac.zip -O
+unzip ntv2sdkmac.zip -d /var/tmp
+mv /var/tmp/ntv2sdk* /var/tmp/ntv2sdk
+cd /var/tmp/ntv2sdk/ajalibraries/ajantv2/build
+xcodebuild -project ajantv2.xcodeproj
+sudo rm -f /usr/local/lib/libajantv2.dylib
+sudo cp ../../../bin/ajantv2.dylib /usr/local/lib/libajantv2.dylib
+sudo ln -fs /usr/local/lib/libajantv2.dylib /usr/local/lib/ajantv2.dylib
+
diff --git a/.github/workflows/ccpp.yml b/.github/workflows/ccpp.yml
index 989369a89..a74673f3d 100644
--- a/.github/workflows/ccpp.yml
+++ b/.github/workflows/ccpp.yml
@@ -63,29 +63,14 @@ jobs:
     name: run macOS
     runs-on: macos-latest
     env:
-      AJA_DIRECTORY: "/var/tmp/ntv2sdk"
-      UG_SKIP_NET_TESTS: 1
-      CPATH: "/usr/local/include:/usr/local/opt/qt/include"
-      LIBRARY_PATH: "/usr/local/lib:/usr/local/opt/qt/lib"
-      PKG_CONFIG_PATH: "/usr/local/lib/pkgconfig:/usr/local/opt/qt/lib/pkgconfig"
-      SDKROOT: "macosx10.14" # SDK 10.15 crashes Qt in High Sierra
       sdk_pass: ${{ secrets.sdk_pass }}
     
     steps:
     - uses: actions/checkout@v1
       with:
         submodules: true
-    - name: set-path
-      run: echo "::add-path::/usr/local/opt/qt/bin"
     - name: bootstrap
-      run: |
-              curl -LO https://github.com/phracker/MacOSX-SDKs/releases/download/10.14-beta4/MacOSX10.14.sdk.tar.xz
-              tar xJf MacOSX10.14.sdk.tar.xz
-              mv MacOSX10.14.sdk /Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs
-              brew install autoconf automake cppunit dylibbundler libtool pkg-config
-              brew install ffmpeg portaudio sdl2
-              brew install ossp-uuid # for cineform
-              ( cd cineform-sdk/ && cmake . && make CFHDCodecStatic )
+      run: .github/scripts/macOS/prepare.sh
     - name: Cache static Qt
       id: cache-qt-mac
       uses: actions/cache@v1
@@ -94,30 +79,9 @@ jobs:
         key: cache-qt-mac
     - name: Build static Qt
       if: steps.cache-qt-mac.outputs.cache-hit != 'true'
-      run: |
-              wget --no-verbose https://download.qt.io/archive/qt/5.13/5.13.2/single/qt-everywhere-src-5.13.2.tar.xz
-              tar xJf qt-everywhere-src-5.13.2.tar.xz
-              cd qt-everywhere-src-5.13.2
-              ./configure -static -release -nomake examples -opensource -confirm-license -opengl -prefix /usr/local/opt/qt
-              make -j 3 && sudo make install
-    - name: Install XIMEA
-      run: |
-              if [ -z "$sdk_pass" ]; then exit 0; fi
-              curl --netrc-file <(cat <<<"machine frakira.fi.muni.cz login sdk password $sdk_pass") https://frakira.fi.muni.cz/~xpulec/sdks/m3api.tar.xz -O
-              sudo tar xJf m3api.tar.xz -C $(xcrun --show-sdk-path)/$SDKPATH/System/Library/Frameworks
-    - name: Install AJA
-      run: |
-              if [ -z "$sdk_pass" ]; then exit 0; fi
-              curl --netrc-file <(cat <<<"machine frakira.fi.muni.cz login sdk password $sdk_pass") https://frakira.fi.muni.cz/~xpulec/sdks/ntv2sdkmac.zip -O
-              unzip ntv2sdkmac.zip -d /var/tmp
-              mv /var/tmp/ntv2sdk* /var/tmp/ntv2sdk
-              cd /var/tmp/ntv2sdk/ajalibraries/ajantv2/build
-              xcodebuild -project ajantv2.xcodeproj
-              sudo rm -f /usr/local/lib/libajantv2.dylib
-              sudo cp ../../../bin/ajantv2.dylib /usr/local/lib/libajantv2.dylib
-              sudo ln -fs /usr/local/lib/libajantv2.dylib /usr/local/lib/ajantv2.dylib
+      run: .github/scripts/macOS/build-qt.sh
     - name: configure
-      run: export CPATH LIBRARY_PATH PKG_CONFIG_PATH && ./autogen.sh --enable-qt --enable-static-qt
+      run: ./autogen.sh --enable-qt --enable-static-qt
     - name: make
       run: make osx-gui-dmg
     - name: make check