toolset.json

{
  "schemaVersion": "1.0",
  "swiftCompiler": {
    "extraCLIOptions": [
      "-Xfrontend", "-disable-stack-protector",
      "-enable-experimental-feature", "Embedded",
      "-enable-experimental-feature", "Extern",
      "-Xclang-linker", "-nostdlib",
      "-Xfrontend", "-function-sections",
      "-Xfrontend", "-mergeable-symbols",
      "-Xfrontend", "-enable-single-module-llvm-emission",
      "-assert-config", "Debug",
      "-Xclang-linker", "-fuse-ld=lld"
    ]
  },
  "cCompiler": {
    "extraCLIOptions": [
      "-nostdlib",
      "-ffunction-sections",
      "-Illvm-toolchain/lib/clang-runtimes/arm-none-eabi/armv7m_soft_fpv4_sp_d16_exn_rtti/include",
      "-mthumb",
      "-Werror",
      "-Wall",
      "-static",
      "-fno-stack-protector",
      "-fno-common"
    ]
  },
  "linker": {
    "extraCLIOptions": [
      "-nostdlib",
      "-t", "-v",
      "-T", "Sources/Support/linkerscript.ld",
      "-Lllvm-toolchain/lib/clang-runtimes/arm-none-eabi/armv7m_soft_fpv4_sp_d16_exn_rtti/lib",
      "-lc",
      "-lclang_rt.builtins",
      "-L.build/lvgl/lib",
      "-llvgl", "-llvgl_demos",
      "-static",
      "-e", "_start_elf",
      "--orphan-handling=error"
    ]
  }
}