CMake (Linux): adds i686 CI build and unify processor naming

Fixes #1978

.github/workflows/ci.yml

@@ -153,6 +153,69 @@ jobs:
           name: fastfetch-linux-${{ matrix.arch }}
           path: ./fastfetch-*.*
 
+  linux-i686:
+    name: Linux-i686
+    runs-on: ubuntu-22.04
+    permissions:
+      security-events: write
+      contents: read
+    steps:
+      - name: checkout repository
+        uses: actions/checkout@v5
+
+      - name: uname -a
+        run: uname -a
+
+      - name: cat /etc/os-release
+        run: cat /etc/os-release
+
+      - name: cat /proc/cpuinfo
+        run: cat /proc/cpuinfo
+
+      - name: add gcc-13 repo
+        run: sudo add-apt-repository -y ppa:ubuntu-toolchain-r/test
+
+      - name: install required packages
+        run: sudo apt-get update && sudo apt-get install -y gcc-13 gcc-13-multilib libvulkan-dev libwayland-dev libxrandr-dev libxcb-randr0-dev libdconf-dev libdbus-1-dev libmagickcore-dev libsqlite3-dev librpm-dev libegl-dev libglx-dev ocl-icd-opencl-dev libpulse-dev libdrm-dev libelf-dev libddcutil-dev rpm ninja-build
+
+      - name: install linuxbrew packages
+        run: |
+          /bin/bash -c "$(curl -fsSL https://raw.githubusercontent.com/Homebrew/install/HEAD/install.sh)"
+          /home/linuxbrew/.linuxbrew/bin/brew install imagemagick chafa --ignore-dependencies
+
+      - name: cmake version
+        run: cmake --version
+
+      - name: configure project
+        run: CC=gcc-13 PKG_CONFIG_PATH=/home/linuxbrew/.linuxbrew/lib/pkgconfig:$PKG_CONFIG_PATH cmake -DCMAKE_C_FLAGS="-m32 -march=i686 -mtune=i686" -DCMAKE_SYSTEM_PROCESSOR_OVERRIDE=i686 -GNinja -DSET_TWEAK=Off -DBUILD_TESTS=On -DENABLE_EMBEDDED_PCIIDS=On -DENABLE_EMBEDDED_AMDGPUIDS=On -DCMAKE_INSTALL_PREFIX=/usr -DENABLE_DIRECTX_HEADERS=Off .
+
+      - name: build project
+        run: cmake --build . --target package --verbose -j4
+
+      - name: list features
+        run: ./fastfetch --list-features
+
+      - name: run fastfetch
+        run: time ./fastfetch -c presets/ci.jsonc --stat false
+
+      - name: run fastfetch --format json
+        run: time ./fastfetch -c presets/ci.jsonc --format json
+
+      - name: run flashfetch
+        run: time ./flashfetch
+
+      - name: print dependencies
+        run: ldd fastfetch
+
+      - name: run tests
+        run: ctest --output-on-failure
+
+      - name: upload artifacts
+        uses: actions/upload-artifact@v4
+        with:
+          name: fastfetch-linux-i686
+          path: ./fastfetch-*.*
+
   linux-armv7l:
     name: Linux-armv7l
     runs-on: ubuntu-24.04
@@ -659,6 +722,7 @@ jobs:
     runs-on: ubuntu-latest
     needs:
       - linux-hosts
+      - linux-i686
       - linux-armv7l
       - linux-armv6l
       - linux-vms

CMakeLists.txt

@@ -9,6 +9,17 @@ project(fastfetch
 
 set(PROJECT_LICENSE "MIT license")
 
+if(DEFINED CMAKE_SYSTEM_PROCESSOR_OVERRIDE) # Used by github actions for i686 build
+    set(CMAKE_SYSTEM_PROCESSOR ${CMAKE_SYSTEM_PROCESSOR_OVERRIDE} CACHE INTERNAL "")
+endif()
+string(TOLOWER "${CMAKE_SYSTEM_PROCESSOR}" CMAKE_SYSTEM_PROCESSOR)
+if(CMAKE_SYSTEM_PROCESSOR STREQUAL "x86_64")
+    set(CMAKE_SYSTEM_PROCESSOR "amd64")
+elseif(CMAKE_SYSTEM_PROCESSOR STREQUAL "arm64")
+    set(CMAKE_SYSTEM_PROCESSOR "aarch64")
+endif()
+message(STATUS "Build for system processor: ${CMAKE_SYSTEM_PROCESSOR}")
+
 ###################
 # Target Platform #
 ###################
@@ -1682,7 +1693,7 @@ elseif(WIN32)
         PRIVATE "propsys"
         PRIVATE "secur32"
     )
-    if(CMAKE_SYSTEM_PROCESSOR STREQUAL "ARM64")
+    if(CMAKE_SYSTEM_PROCESSOR STREQUAL "aarch64")
         # WoA only works on Windows 10 or higher
         target_link_libraries(libfastfetch
             PRIVATE "mincore"
@@ -2020,11 +2031,6 @@ install(
 ##################
 
 set(CPACK_GENERATOR "TGZ;ZIP")
-if(CMAKE_SYSTEM_PROCESSOR STREQUAL "x86_64")
-    set(CMAKE_SYSTEM_PROCESSOR "amd64")
-elseif(CMAKE_SYSTEM_PROCESSOR STREQUAL "arm64")
-    set(CMAKE_SYSTEM_PROCESSOR "aarch64")
-endif()
 if(APPLE)
     string(TOLOWER "${CMAKE_PROJECT_NAME}-macos-${CMAKE_SYSTEM_PROCESSOR}" CPACK_PACKAGE_FILE_NAME) # use macos instead of darwin
 elseif(IS_MUSL)