Cross-compilation

CMakePresets.json

@@ -0,0 +1,136 @@
+{
+  "version": 10,
+  "cmakeMinimumRequired": {
+    "major": 3,
+    "minor": 31,
+    "patch": 0
+  },
+  "configurePresets": [
+    {
+        "name": "x86_64",
+        "hidden": false,
+        "generator": "Ninja",
+        "binaryDir": "${sourceDir}/build/x86_64",
+        "toolchainFile": "${sourceDir}/toolchain-x86_64.cmake"
+    },
+    {
+        "name": "aarch64",
+        "hidden": false,
+        "generator": "Ninja",
+        "binaryDir": "${sourceDir}/build/aarch64",
+        "toolchainFile": "${sourceDir}/toolchain-aarch64.cmake"
+    }
+  ],
+  "buildPresets": [
+    {
+      "name": "x86_64",
+      "configurePreset": "x86_64"
+    },
+    {
+      "name": "aarch64",
+      "configurePreset": "aarch64"
+    }
+  ],
+  "packagePresets": [
+    {
+      "name": "x86_64-fedora",
+      "configurePreset": "x86_64",
+      "generators": [
+        "TGZ",
+        "RPM"
+      ]
+    },
+    {
+      "name": "x86_64-ubuntu",
+      "configurePreset": "x86_64",
+      "generators": [
+        "DEB"
+      ]
+    },
+    {
+      "name": "aarch64-fedora",
+      "configurePreset": "aarch64",
+      "generators": [
+        "TGZ",
+        "RPM"
+      ]
+    },
+    {
+      "name": "aarch64-ubuntu",
+      "configurePreset": "aarch64",
+      "generators": [
+        "DEB"
+      ]
+    }
+  ],
+  "workflowPresets": [
+    {
+      "name": "fedora-x86_64",
+      "steps": [
+        {
+          "type": "configure",
+          "name": "x86_64"
+        },
+        {
+          "type": "build",
+          "name": "x86_64"
+        },
+        {
+          "type": "package",
+          "name": "x86_64-fedora"
+        }
+      ]
+    },
+    {
+      "name": "fedora-aarch64",
+      "steps": [
+        {
+          "type": "configure",
+          "name": "aarch64"
+        },
+        {
+          "type": "build",
+          "name": "aarch64"
+        },
+        {
+          "type": "package",
+          "name": "aarch64-fedora"
+        }
+      ]
+    },
+    {
+      "name": "ubuntu-x86_64",
+      "steps": [
+        {
+          "type": "configure",
+          "name": "x86_64"
+        },
+        {
+          "type": "build",
+          "name": "x86_64"
+        },
+        {
+          "type": "package",
+          "name": "x86_64-ubuntu"
+        }
+      ]
+    },
+    {
+      "name": "ubuntu-aarch64",
+      "steps": [
+        {
+          "type": "configure",
+          "name": "aarch64"
+        },
+        {
+          "type": "build",
+          "name": "aarch64"
+        },
+        {
+          "type": "package",
+          "name": "aarch64-ubuntu"
+        }
+      ]
+    }
+  ]
+}

scripts/fedora/Dockerfile

@@ -1,7 +1,8 @@
 FROM fedora:latest
 
 RUN dnf update -y && \
-    dnf install -y @development-tools gcc-c++ ninja-build cmake extra-cmake-modules libcurl-devel qt6-qtbase-devel kf6-kcoreaddons-devel kf6-ki18n-devel kf6-knotifications-devel kf6-kxmlgui-devel rpm-build
+    dnf install -y @development-tools gcc-c++ ninja-build cmake extra-cmake-modules libcurl-devel qt6-qtbase-devel kf6-kcoreaddons-devel kf6-ki18n-devel kf6-knotifications-devel kf6-kxmlgui-devel rpm-build && \
+    dnf install -y --use-host-config --installroot=/roots/aarch64-rootfs --releasever=42 --forcearch=aarch64 --setopt=install_weak_deps=False libcurl-devel qt6-qtbase-devel kf6-kcoreaddons-devel kf6-ki18n-devel kf6-knotifications-devel kf6-kxmlgui-devel
 
 ARG USER_ID
 ARG GROUP_ID

toolchain-aarch64.cmake

@@ -0,0 +1,16 @@
+set(CMAKE_SYSTEM_NAME Linux)
+set(CMAKE_SYSTEM_PROCESSOR aarch64)
+
+set(CMAKE_C_COMPILER clang)
+set(CMAKE_CXX_COMPILER clang++)
+set(CMAKE_C_COMPILER_TARGET aarch64-linux-gnu)
+set(CMAKE_CXX_COMPILER_TARGET aarch64-linux-gnu)
+
+set(QT_HOST_PATH /usr/lib64/qt6)
+set(CMAKE_SYSROOT /roots/aarch64-rootfs) # Path TBD, would break host cross-compilation
+set(CMAKE_FIND_ROOT_PATH /roots/aarch64-rootfs) # Path TBD, would break host cross-compilation
+
+set(CMAKE_FIND_ROOT_PATH_MODE_PROGRAM NEVER)
+set(CMAKE_FIND_ROOT_PATH_MODE_LIBRARY ONLY)
+set(CMAKE_FIND_ROOT_PATH_MODE_INCLUDE ONLY)
+set(CMAKE_FIND_ROOT_PATH_MODE_PACKAGE ONLY)

toolchain-x86_64.cmake

@@ -0,0 +1,7 @@
+set(CMAKE_SYSTEM_NAME Linux)
+set(CMAKE_SYSTEM_PROCESSOR x86_64)
+
+set(CMAKE_C_COMPILER clang)
+set(CMAKE_CXX_COMPILER clang++)
+set(CMAKE_C_COMPILER_TARGET x86_64)
+set(CMAKE_CXX_COMPILER_TARGET x86_64)