Add 32-bit AppImage build target

.gitlab-ci.yml

@@ -21,9 +21,25 @@ before_script:
  - echo "started by ${GITLAB_USER_NAME}"
 
 #-----------------------------------------------------------------------#
-# Linux (AppImage) Build Target                                         #
+# Linux (AppImage) 32-bit Build Target                                  #
 #-----------------------------------------------------------------------#
-build_linux:
+build_linux_32:
+  image: i386/ubuntu:bionic
+  stage: build
+  script:
+  - apt update
+  - apt install -y build-essential qtcreator qt5-default libusb-1.0-0-dev libhidapi-dev pkgconf wget git
+  - ./scripts/build-appimage-32.sh
+  
+  artifacts:
+    paths:
+    - OpenRGB-i386.AppImage
+    expire_in: 1337 years
+
+#-----------------------------------------------------------------------#
+# Linux (AppImage) 64-bit Build Target                                  #
+#-----------------------------------------------------------------------#
+build_linux_64:
   image: ubuntu:bionic
   stage: build
   script:
@@ -35,7 +51,7 @@ build_linux:
     paths:
     - OpenRGB-x86_64.AppImage
     expire_in: 1337 years
-
+  
 #-----------------------------------------------------------------------#
 # Windows (32-bit) Build Target                                         #
 #-----------------------------------------------------------------------#

scripts/build-appimage-32.sh

@@ -0,0 +1,82 @@
+#!/bin/bash
+
+#-----------------------------------------------------------------------#
+# OpenRGB AppImage 32-bit Build Script                                  #
+#-----------------------------------------------------------------------#
+
+set -x
+set -e
+
+#-----------------------------------------------------------------------#
+# Build in a temporary directory to keep the system clean               #
+# Use RAM disk if possible (if available and not building on a CI       #
+# system like Travis)                                                   #
+#-----------------------------------------------------------------------#
+if [ "$CI" == "" ] && [ -d /dev/shm ]; then
+    TEMP_BASE=/dev/shm
+else
+    TEMP_BASE=/tmp
+fi
+
+BUILD_DIR=$(mktemp -d -p "$TEMP_BASE" appimage-build-XXXXXX)
+
+#-----------------------------------------------------------------------#
+# Make sure to clean up build dir, even if errors occur                 #
+#-----------------------------------------------------------------------#
+cleanup () {
+    if [ -d "$BUILD_DIR" ]; then
+        rm -rf "$BUILD_DIR"
+    fi
+}
+trap cleanup EXIT
+
+#-----------------------------------------------------------------------#
+# Store repo root as variable                                           #
+#-----------------------------------------------------------------------#
+REPO_ROOT=$(readlink -f $(dirname $(dirname $0)))
+OLD_CWD=$(readlink -f .)
+
+#-----------------------------------------------------------------------#
+# Switch to build dir                                                   #
+#-----------------------------------------------------------------------#
+pushd "$BUILD_DIR"
+
+#-----------------------------------------------------------------------#
+# Configure build files with qmake                                      #
+# we need to explicitly set the install prefix, as qmake's default is   #
+# /usr/local for some reason...                                         #
+#-----------------------------------------------------------------------#
+qmake "$REPO_ROOT"
+
+#-----------------------------------------------------------------------#
+# Build project and install files into AppDir                           #
+#-----------------------------------------------------------------------#
+make -j$(nproc)
+make install INSTALL_ROOT=AppDir
+
+#-----------------------------------------------------------------------#
+# Now, build AppImage using linuxdeploy and linuxdeploy-plugin-qt       #
+# Download linuxdeploy and its Qt plugin                                #
+#-----------------------------------------------------------------------#
+wget https://github.com/linuxdeploy/linuxdeploy/releases/download/continuous/linuxdeploy-i386.AppImage
+wget https://github.com/linuxdeploy/linuxdeploy-plugin-qt/releases/download/continuous/linuxdeploy-plugin-qt-i386.AppImage
+
+#-----------------------------------------------------------------------#
+# Make them executable                                                  #
+#-----------------------------------------------------------------------#
+chmod +x linuxdeploy*.AppImage
+
+#-----------------------------------------------------------------------#
+# Make sure Qt plugin finds QML sources so it can deploy the imported   #
+# files                                                                 #
+export QML_SOURCES_PATHS="$REPO_ROOT"/src
+
+./linuxdeploy-i386.AppImage --appimage-extract-and-run --appdir AppDir -e OpenRGB -i "$REPO_ROOT"/qt/OpenRGB.png -d "$REPO_ROOT"/qt/OpenRGB.desktop 
+./linuxdeploy-plugin-qt-i386.AppImage --appimage-extract-and-run --appdir AppDir
+./linuxdeploy-i386.AppImage --appimage-extract-and-run --appdir AppDir --output appimage
+
+#-----------------------------------------------------------------------#
+# Move built AppImage back into original CWD                            #
+#-----------------------------------------------------------------------#
+mv OpenRGB*.AppImage "$OLD_CWD"
+