Qt: Add GammaRay build scripts

.github/workflows/scripts/linux/build-gammaray.sh

@@ -0,0 +1,48 @@
+#!/usr/bin/env bash
+
+set -e
+
+if [ "$#" -ne 2 ]; then
+	echo "Syntax: $0 <deps directory> <output directory>"
+	exit 1
+fi
+
+DEPSDIR=$(realpath "$1")
+INSTALLDIR=$(realpath "$2")
+
+if [ ! -d "$DEPSDIR/include/QtCore" ]; then
+	echo "Error: The build-dependencies-qt.sh script must be run on the deps directory first."
+	exit 1
+fi
+
+GAMMARAY=master
+
+mkdir -p gammaray-build
+cd gammaray-build
+
+echo "Downloading..."
+curl -L -o "GammaRay-$GAMMARAY.tar.gz" https://github.com/KDAB/GammaRay/archive/$GAMMARAY.tar.gz
+
+rm -fr "GammaRay-$GAMMARAY"
+
+echo "Extracting..."
+tar xf "GammaRay-$GAMMARAY.tar.gz"
+
+cd "GammaRay-$GAMMARAY"
+mkdir build
+cd build
+
+echo "Configuring..."
+cmake -DCMAKE_PREFIX_PATH="$DEPSDIR" -G Ninja -DCMAKE_INSTALL_PREFIX="$INSTALLDIR" -DGAMMARAY_BUILD_DOCS=false ..
+
+echo "Building..."
+cmake --build . --parallel
+
+echo "Installing..."
+cmake --build . --target install
+
+cd ../..
+
+echo "Cleaning up..."
+cd ..
+rm -r gammaray-build