【全志D1哪吒开发板开源鸿蒙系统适配】ohos-riscv三方库移植

[zhangpeng123]

https://hrdc1ycb27.feishu.cn/docs/doccnNZD1KvrxRTl24OFMxIwWId?from=from_copylink
一、背景

• 背景：ohos-riscv三方库移植
• 整体思路：
  1.在烧写镜像时就把三方库一起编译进去（验证成功）
  2.烧写镜像时调用CMAKE或者MAKE（上次没有成功）
  3.在系统外编译完再复制进去（还没试）
  4.本地编译（还没试）
  二、操作步骤
  编写.gn
• 对于三方库.gn主要作用就是链接代码，指定编译参数，生成目标文件。
• 以tree为例，基于ohos-riscv项目精简后感觉最小模板为下。

# Copyright (c) 2022 AIRCAS
import("//build/ohos.gni")

# This is the configuration needed to use tree.
config("tree_config") {
  include_dirs = [
    "debian",
    "doc",
  ]
  cflags = [ 
      "-Wno-unused-parameter" ,
      "-Wno-incompatible-pointer-types",
      "-D_GNU_SOURCE",
      "-D_POSIX_C_SOURCE=200112",  
  ]
}
common_source = [
      "color.c",
      "file.c",
      "filter.c",
      "hash.c",
      "html.c",
      "info.c",
      "json.c",
      "list.c",
      "strverscmp.c",
      "tree.c",
      "unix.c",
      "xml.c",
]

# This is the configuration used to build tree itself.
# It should not be needed outside of this library.
config("tree_private_config") {
  visibility = [ ":*" ]
  include_dirs = [ ]
}

ohos_source_set("tree_source") {
  configs = [ ":tree_config" ]
  sources = common_source

  if (is_ohos) {
  sources += [ ]
  } 
}

# target files

ohos_static_library("tree_static") {
  deps = [ ":tree_source" ]
  public_configs = [ ":tree_config" ]
}

ohos_shared_library("tree_share") {
  deps = [ ":tree_source" ]
  public_configs = [ ":tree_config" ]
}

ohos_executable("tree") {
  include_dirs = [
    "debian",
    "doc",
  ]
  deps = [ ":tree_source" ]
  public_configs = [ ":tree_config" ]
}

• 链接三方库
• 根据原三方库改写完gn文件后，需要在ohos-build系统中进行指定
• common子系统common组件已经测试为确定会参与系统编译，路径及代码示例如下：
• 修改行号为25、26、27

/home/zhangpeng/OpenHarmony/build/common/BUILD.gn

# Copyright (c) 2021 Huawei Device Co., Ltd.
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
#     http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.

import("//build/config/ohos/config.gni")
import("//build/config/sanitizers/sanitizers.gni")
import("//build/ohos.gni")

group("common_packages") {
  deps = []
  deps += [
    "//third_party/giflib:libgif",
    "//third_party/libpng:libpng",
    "//third_party/sqlite:sqlite",
    "//third_party/zlib:libz",  
    "//third_party/tree:tree",
    "//third_party/tree:tree_share",
    "//third_party/tree:tree_static",
  ]

  deps += [ "musl:musl_install" ]

  if (is_asan) {
    deps += [
      "asan:asan.options",
      "asan:libclang_rt.asan.so",
    ]
  }

编译打包
接下来可以进行编译、打包及烧写。
编译需要在docker下,打包在docker外OpenHarmony下，烧写采用PhoneixCard烧写启动卡。参考编译

#编译
sudo docker run -it -v $(pwd):/home/openharmony swr.cn-south-1.myhuaweicloud.com/openharmony-docker/openharmony-docker-standard:0.0.4
./build.sh --product-name sunxi_d1 --ccache
#打包
sudo ./device/sunxi/build/pack -e

测试
烧写完成后采用串口连接进入Ohos-riscv系统，进入system文件夹进行查看，已确定bin中存放excu,lib64中存放.so，也可以实际执行进行测试。

有做ohos-riscv的欢迎一起交流。