Custom-Operating-System/build/userland/USERLAND_FLAGS.gni

uland_c_flags = [
  "-Werror",
  "-Wno-address-of-packed-member",
]

if (userland_symbols) {
  uland_c_flags += [ "-ggdb" ]
}

if (optimize) {
  uland_c_flags += [ "-Os" ]
}

uland_cc_flags = [
  "-std=c++2a",
  "-fno-sized-deallocation",
  "-fno-exceptions",
  "-D_LIBCXX_BUILD_XOS_EXTENSIONS",
]

uland_objcc_flags = uland_cc_flags + [
                      "-fno-objc-exceptions",
                      "-fno-objc-arc",
                    ]

uland_asm_flags = []
uland_ld_flags = []

if (device_type == "desktop") {
  uland_c_flags += [ "-DTARGET_DESKTOP" ]
}
if (device_type == "mobile") {
  uland_c_flags += [ "-DTARGET_MOBILE" ]
}

if (target_arch == "x86") {
  uland_asm_flags += [
    "-f",
    "elf",
  ]
}

if (target_arch == "x86_64") {
  uland_asm_flags += [
    "-f",
    "elf64",
  ]
}

if (target_arch == "arm32") {
  uland_c_flags += [
    "-fno-builtin",
    "-march=armv7-a",
    "-mfpu=neon-vfpv4",
    "-mfloat-abi=softfp",
    "-fno-pie",
  ]
  uland_asm_flags += [
    "-march=armv7-a",
    "-mfpu=neon-vfpv4",
    "-mfloat-abi=softfp",
    "-mcpu=cortex-a15",
  ]
  uland_ld_flags += [ "-nostdlib" ]

  if (host == "gnu") {
    uland_ld_flags += [
      "-nostdinc",
      "-nodefaultlibs",
      "-nostartfiles",
      "-lgcc",
    ]
  }

  if (host == "llvm") {
    uland_ld_flags += [
      "--oformat",
      "elf32-littlearm",
      "/usr/lib/llvm-18/lib/clang/18/lib/linux/libclang_rt.builtins-arm.a",
    ]
  }
}

if (target_arch == "arm64") {
  uland_c_flags += [
    "-fno-builtin",
    "-mcpu=cortex-a53+nocrypto+nocrc",
    "-fno-pie",
  ]
  uland_asm_flags += [ "-mcpu=cortex-a53+nocrypto+nocrc" ]
  uland_ld_flags += [ "-nostdlib" ]

  if (host == "gnu") {
    uland_ld_flags += [
      "-nostdinc",
      "-nodefaultlibs",
      "-nostartfiles",
      "-lgcc",
    ]
  }

  if (host == "llvm") {
    uland_ld_flags += [
      "--oformat",
      "elf64-littlearm",
    ]
  }
}

if (target_arch == "riscv64") {
  uland_c_flags += [
    "-fno-builtin",
    "-march=rv64ima",
    "-mabi=lp64",
  ]
  uland_asm_flags += [
    "-march=rv64ima",
    "-mabi=lp64",
  ]
  uland_ld_flags += [ "-nostdlib" ]

  if (host == "gnu") {
    uland_ld_flags += [
      "-nostdinc",
      "-nodefaultlibs",
      "-nostartfiles",
      rebase_path("//toolchains/gcc_runtime/10.2.1/riscv64-libgcc.a",
                root_build_dir),
    ]
  }

  if (host == "llvm") {
    uland_ld_flags += [
      "--oformat",
      "elf64",
      rebase_path("//toolchains/gcc_runtime/10.2.1/riscv64-libgcc.a",
                root_build_dir),
    ]
  }
}