openharmony_kernel_liteos_m/config.gni

# Copyright (c) 2022-2022 Huawei Device Co., Ltd. All rights reserved.
#
# Redistribution and use in source and binary forms, with or without modification,
# are permitted provided that the following conditions are met:
#
# 1. Redistributions of source code must retain the above copyright notice, this list of
#    conditions and the following disclaimer.
#
# 2. Redistributions in binary form must reproduce the above copyright notice, this list
#    of conditions and the following disclaimer in the documentation and/or other materials
#    provided with the distribution.
#
# 3. Neither the name of the copyright holder nor the names of its contributors may be used
#    to endorse or promote products derived from this software without specific prior written
#    permission.
#
# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
# THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
# PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR
# CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
# EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
# PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
# OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
# WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
# OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
# ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

import("//build/lite/config/component/lite_component.gni")
import("liteos.gni")

LITEOS_MENUCONFIG_H = rebase_path("$root_out_dir/config.h")

liteos_name = "OHOS_Image"
liteos_kernel_only = false

#
# arch_config
#
liteos_arch_config_cflags = []
if (defined(LOSCFG_ARCH_ARM)) {
  mcpu = LOSCFG_ARCH_CPU
  if (defined(LOSCFG_ARCH_ARM_AARCH64) && defined(LOSCFG_ARCH_FPU_DISABLE)) {
    mcpu += "+nofp"
  }
  liteos_arch_config_cflags += [ "-mcpu=$mcpu" ]
  if (defined(LOSCFG_ARCH_ARM_AARCH32) && defined(LOSCFG_ARCH_FPU)) {
    liteos_arch_config_cflags += [ "-mfpu=$LOSCFG_ARCH_FPU" ]
  }
}

arch_config_cflags = liteos_arch_config_cflags
arch_config_asmflags = []
arch_config_ldflags = liteos_arch_config_cflags

if (defined(LOSCFG_ARCH_ARM_AARCH32) && !defined(LOSCFG_COMPILER_CLANG_LLVM)) {
  arch_config_cflags += [ "-mthumb-interwork" ]
}
if (defined(LOSCFG_THUMB)) {
  arch_config_cflags += [ "-mthumb" ]
  if (defined(LOSCFG_COMPILER_CLANG_LLVM)) {
    arch_config_cflags += [ "-mimplicit-it=thumb" ]
  } else {
    arch_config_cflags += [ "-Wa,-mimplicit-it=thumb" ]
  }
}
arch_config_asmflags += arch_config_cflags

#
# stdinc_config
#
stdinc_config_cflags = []
stdinc_config_asmflags = []

if (defined(LOSCFG_LIBC_MUSL)) {
  stdinc_config_cflags += [ "-nostdinc" ]
}
stdinc_config_asmflags += stdinc_config_cflags

#
# ssp_config
#
ssp_config_cflags = []
ssp_config_asmflags = []

if (defined(LOSCFG_CC_STACKPROTECTOR_ALL)) {
  ssp_config_cflags += [ "-fstack-protector-all" ]
} else if (defined(LOSCFG_CC_STACKPROTECTOR_STRONG)) {
  ssp_config_cflags += [ "-fstack-protector-strong" ]
} else if (defined(LOSCFG_CC_STACKPROTECTOR)) {
  ssp_config_cflags += [
    "-fstack-protector",
    "--param",
    "ssp-buffer-size=4",
  ]
} else {
  ssp_config_cflags += [ "-fno-stack-protector" ]
}
ssp_config_asmflags += ssp_config_cflags

#
# optimize_config
#
optimize_config_cflags = []
optimize_config_asmflags = []

if (defined(LOSCFG_COMPILE_LTO)) {
  if (defined(LOSCFG_COMPILER_CLANG_LLVM)) {
    optimize_config_cflags += [ "-flto=thin" ]
  } else {
    #optimize_config_cflags += [ "-flto" ]
  }
}
if (defined(LOSCFG_COMPILE_DEBUG)) {
  optimize_config_cflags += [
    "-g",
    "-gdwarf-2",
  ]
  optimize_config_cflags += [ "-O0" ]
}
if (defined(LOSCFG_COMPILE_OPTIMIZE)) {
  optimize_config_cflags += [ "-O2" ]
}
if (defined(LOSCFG_COMPILE_OPTIMIZE_SIZE)) {
  if (defined(LOSCFG_COMPILER_CLANG_LLVM)) {
    optimize_config_cflags += [ "-Oz" ]
  } else {
    optimize_config_cflags += [ "-Os" ]
  }
}
optimize_config_asmflags += optimize_config_cflags

#
# kconfig_config
#
kconfig_config_cflags = []
kconfig_config_asmflags = []

kconfig_config_cflags += [
  "-imacros",
  "$LITEOS_MENUCONFIG_H",
]
kconfig_config_asmflags += kconfig_config_cflags

#
# warn_config
#
warn_config_cflags = []
warn_config_asmflags = []

warn_config_cflags += [
  "-Wall",
  "-Werror",
  "-Wpointer-arith",
  "-Wstrict-prototypes",
  "-Winvalid-pch",
  "-Wno-address-of-packed-member",
]
warn_config_asmflags += warn_config_cflags

#
# dialect_config
#
dialect_config_cflags = []
dialect_config_ccflags = []
dialect_config_asmflags = []

dialect_config_cflags += [ "-std=c99" ]
dialect_config_ccflags += [ "-std=c++11" ]

#
# misc_config
#
misc_config_cflags = []
misc_config_asmflags = []

misc_config_cflags += [
  "-fno-pic",
  "-fno-builtin",
  "-fms-extensions",
  "-fno-strict-aliasing",
  "-fno-common",
  "-fsigned-char",
  "-ffunction-sections",
  "-fdata-sections",
  "-fno-exceptions",
  "-fno-omit-frame-pointer",
]
if (!defined(LOSCFG_COMPILER_CLANG_LLVM)) {
  misc_config_cflags += [ "-fno-aggressive-loop-optimizations" ]
}
misc_config_asmflags += misc_config_cflags
misc_config_asmflags += [ "-DCLZ=CLZ" ]

# ldflags for generating executable bin files
executable_config_ldflags = [
  "-static",
  "-Wl,--gc-sections",
  "-Wl,-Map=$liteos_name.map",
]

# Commands to generate kernel_image
toochain_config_objcopy = "${compile_prefix}objcopy$toolchain_cmd_suffix"
toochain_config_objdump = "${compile_prefix}objdump$toolchain_cmd_suffix"

toochain_config_command =
    "$toochain_config_objcopy -O binary $liteos_name $liteos_name.bin"
toochain_config_command += " && sh -c '$toochain_config_objdump -t $liteos_name | sort >$liteos_name.sym.sorted'"

toochain_asm_command =
    " && sh -c '$toochain_config_objdump -d $liteos_name >$liteos_name.asm'"