That moment when, just as you're about to pass out, you finally realize exactly what the problem is--

Author: SeongGino

.github/workflows/cmake-multi-platform.yml

@@ -30,6 +30,7 @@ jobs:
             qt_arch: linux
             qt_version: 5.15.2
             sys_arch: x86_64
+            install_prefix: -DCMAKE_INSTALL_PREFIX=/usr
             pretty: "Linux x86 AppImage"
           - os: ubuntu-22.04-arm
             c_compiler: clang
@@ -38,6 +39,7 @@ jobs:
             qt_arch: linux_arm64
             qt_version: 6.7.3
             sys_arch: aarch64
+            install_prefix: -DCMAKE_INSTALL_PREFIX=/usr
             pretty: "Linux ARM AppImage"
         exclude:
           - os: windows-2019
@@ -56,15 +58,15 @@ jobs:
       uses: jdpurcell/install-qt-action@v5
       with:
         version: '${{ matrix.qt_version }}'
-        archives: 'qtbase qtserialport qttools icu'
+        archives: 'qtbase qtserialport icu'
     - name: Install Qt(6)
       if: ${{ matrix.qt_version != '5.15.2' }}
       uses: jdpurcell/install-qt-action@v5
       with:
         version: '${{ matrix.qt_version }}'
         host: '${{ matrix.qt_arch }}'
         modules: 'qtserialport'
-        archives: 'qtbase qttools icu'
+        archives: 'qtbase icu'
 
     - name: Configure CMake
       # Configure CMake in a 'build' subdirectory. `CMAKE_BUILD_TYPE` is only required if you are using a single-configuration generator such as make.
@@ -74,6 +76,7 @@ jobs:
         -DCMAKE_CXX_COMPILER=${{ matrix.cpp_compiler }}
         -DCMAKE_C_COMPILER=${{ matrix.c_compiler }}
         -DCMAKE_BUILD_TYPE=${{ matrix.build_type }}
+        ${{ matrix.install_prefix }}
         -S ${{ github.workspace }}
 
     - name: Build