Chap1 SDK初探
step1.1 解压<Hi3518E_SDK_V1.0.4.0.tgz>到自己的工作目录
进入解压后的目录Hi3518E_SDK_V1.0.4.0可以看到4个文件（linux下一切皆文件?）
package scripts sdk.cleanup sdk.unpack
目录说明：
package ：存放SDK各种压缩包的目录
scripts ：存放shell脚本的目录
sdk.cleanup : SDK清理脚本,运行后整个目录将恢复到解压后的初始状态，请注意自己的修改内容，谨慎运行
sdk.unpack : SDK展开脚本，用以快速展开基本的SDK包
step1.2 运行./sdk.unpack解压SDK包
期间可能会有报错：
./sdk.unpack: 2: ./sdk.unpack: source: not found
./sdk.unpack: 4: ./sdk.unpack: ECHO: not found
./sdk.unpack: 6: ./sdk.unpack: WARN: not found
./sdk.unpack: 7: ./sdk.unpack: WARN: not found
./sdk.unpack: 8: ./sdk.unpack: ECHO: not found
./sdk.unpack: 20: ./sdk.unpack: ECHO: not found
./sdk.unpack: 22: ./sdk.unpack: run_command_progress_float: not found
./sdk.unpack: 24: ./sdk.unpack: ECHO: not found
./sdk.unpack: 26: ./sdk.unpack: run_command_progress_float: not found
./sdk.unpack: 37: ./sdk.unpack: ECHO: not found
./sdk.unpack: 39: ./sdk.unpack: run_command_progress_float: not found
./sdk.unpack: 42: ./sdk.unpack: ECHO: not found
./sdk.unpack: 44: ./sdk.unpack: run_command_progress_float: not found
解决方法：修改系统默认shell为bash
sudo dpkg-reconfigure dash
选择：否/no，重新运行脚本即可
运行后可以看到当前目录下的文件结构：
drv mpp osdrv package scripts sdk.cleanup sdk.unpack
新增目录说明：
drv ：driver相关
mpp ：媒体处理软件平台(Media Process Platform)相关
osdrv ：操作系统及相关驱动<uboot, kernerl, rootfs,tools...>
Chap2.SDK整体编译
step2.1 编译链的安装与选择
040SDK包中提供两种编译工具链 arm-hisiv300-linux 和 arm-hisiv400-linux在osdrv/opensource/toolchain目录下，其中 arm-hisiv300-linux 为基于 uclibc 的工具链， arm-hisiv400-linux 为基于 glibc 的工具链。请注意uboot,kernel,rootfs,和我们的app要统一使用某一个交叉编译链编译，不要两个编译链混用，否则系统运行的时候可能出现奇奇怪怪的错误，安装方法如下（注意，需要有sudo权限或者root权限)：
1）安装v300编译链：
进入arm-hisiv300-linux目录，然后运行./cross.install即可。
2）安装v400编译链：
进入arm-hisiv400-linux目录，运行chmod +x cross.install，然后运行./cross.install即可。
3）生效环境变量：
编辑 /etc/environment，在""内加入[ /opt/hisi-linux/x86-arm/arm-hisiv300-linux/target/bin/:/opt/hisi-linux/x86-arm/arm-hisiv400-linux/target/bin ]（注意用:分隔），然后souce /etc/environment即可
4）编译链的选取：
由于单板资源有限，而ulibc比glibc要小很多，所以后续正常情况下选择arm-hisiv300-linux作为我的编译链
step2.2 整体编译
进入目录<Hi3518E_SDK_V1.0.4.0/osdrv>，make OSDRV_CROSS=arm-hisiv300-linux CHIP=hi3518ev200 all,整体编译。编译期间可能会遇到若干错误，关键字摘录如下：
错误1：
Hi3518E_SDK_V1.0.4.0/osdrv/tools/pc/jffs2_tool/tmp/mtd-utils-1.5.2/lib/libmtd.a(libmtd.o): in function `dev_node2num':
Hi3518E_SDK_V1.0.4.0/osdrv/tools/pc/jffs2_tool/tmp/mtd-utils-1.5.2/lib/libmtd.c:446: undefined reference to `major'
Hi3518E_SDK_V1.0.4.0/osdrv/tools/pc/jffs2_tool/tmp/mtd-utils-1.5.2/lib/libmtd.c:447: undefined reference to `minor'
Hi3518E_SDK_V1.0.4.0/osdrv/tools/pc/jffs2_tool/tmp/mtd-utils-1.5.2/lib/libmtd.a(libmtd.o): in function `mtd_probe_node':
Hi3518E_SDK_V1.0.4.0/osdrv/tools/pc/jffs2_tool/tmp/mtd-utils-1.5.2/lib/libmtd.c:1395: undefined reference to `major'
Hi3518E_SDK_V1.0.4.0/osdrv/tools/pc/jffs2_tool/tmp/mtd-utils-1.5.2/lib/libmtd.c:1396: undefined reference to `minor'
Hi3518E_SDK_V1.0.4.0/osdrv/tools/pc/jffs2_tool/tmp/mtd-utils-1.5.2/lib/libmtd.a(libmtd_legacy.o): in function `legacy_get_dev_info':
Hi3518E_SDK_V1.0.4.0/osdrv/tools/pc/jffs2_tool/tmp/mtd-utils-1.5.2/lib/libmtd_legacy.c:254: undefined reference to `major'
Hi3518E_SDK_V1.0.4.0/osdrv/tools/pc/jffs2_tool/tmp/mtd-utils-1.5.2/lib/libmtd_legacy.c:255: undefined reference to `minor'
collect2: error: ld returned 1 exit status
错误2：
mkfs.jffs2.c:70:10: fatal error: sys/acl.h: 没有那个文件或目录
错误3：
compr_zlib.c:39:10: fatal error: zlib.h: 没有那个文件或目录
错误4：
mkfs.ubifs/mkfs.ubifs.h:46:10: fatal error: uuid/uuid.h: 没有那个文件或目录
错误5：
/usr/bin/ld: misc-utils/lslocks.o: in function `get_dev_inode':
Hi3518E_SDK_V1.0.4.0/osdrv/tools/pc/cramfs_tool/tmp/util-linux-2.22-rc2/misc-utils/lslocks.c:223: undefined reference to `makedev'
/usr/bin/ld: misc-utils/lslocks.o: in function `get_fallback_filename':
Hi3518E_SDK_V1.0.4.0/osdrv/tools/pc/cramfs_tool/tmp/util-linux-2.22-rc2/misc-utils/lslocks.c:142: undefined reference to `makedev'
collect2: error: ld returned 1 exit status
错误6：其他
step2.3 错误分析及解决
产生这些错误的原因在于我们的环境搭建不完全，无论是pc还是交叉编译链。处理方法有如下两种。
Action1. 修改顶层Makefile：删除目标 all的依赖，hipctools hiboardtools，这样一来不再编译这些工具，可以自己安装代替，同时也需要修改Makefile中使用这些工具的地方，如:
pushd $(OSDRV_DIR)/pub/bin/pc;./mkfs.jffs2 -d $(OSDRV_DIR)/pub/$(PUB_ROOTFS) -l -e 0x40000 -o $(OSDRV_DIR)/pub/$(PUB_IMAGE)/$(JFFS2_IMAGE_BIN_256K);popd
pushd $(OSDRV_DIR)/pub/bin/pc;./mkfs.jffs2 -d $(OSDRV_DIR)/pub/$(PUB_ROOTFS) -l -e 0x20000 -o $(OSDRV_DIR)/pub/$(PUB_IMAGE)/$(JFFS2_IMAGE_BIN_128K);popd
pushd $(OSDRV_DIR)/pub/bin/pc;./mkfs.jffs2 -d $(OSDRV_DIR)/pub/$(PUB_ROOTFS) -l -e 0x10000 -o $(OSDRV_DIR)/pub/$(PUB_IMAGE)/$(JFFS2_IMAGE_BIN_64K);popd
pushd $(OSDRV_DIR)/pub/bin/pc;./mkfs.ubifs -d $(OSDRV_DIR)/pub/$(PUB_ROOTFS) -m 2KiB -e 126976 -o ./$(UBIFS_UBI_IMAGE_BIN) -c 256 -F;popd
pushd $(OSDRV_DIR)/pub/bin/pc;./ubinize -m 2KiB -p 128KiB -o $(OSDRV_DIR)/pub/$(PUB_IMAGE)/$(UBIFS_IMAGE_BIN) ubi.cfg;popd
pushd $(OSDRV_DIR)/pub/bin/pc;rm ./$(UBIFS_UBI_IMAGE_BIN) ubi.cfg -rf;popd
Action2: 给SDK打补丁。针对以上错误，我给SDK做了一份补丁，补丁脚本内容如下：
#!/bin/bash
#Author: Lucas
#Email: [email protected]
#QQ: 2302457646
#Notice:
# 1. you must have runned the script [sdk.unpack] to unpack the sdk
# 2. you must have runned the script [cross.install.v300] or others to install the compiler
# 3. you may should adapt for another compiler firstly,
# this patch is for arm-hisiv300-linux, others may be will get some errors.
if [ $UID -ne 0 ]; then
echo -e "${PURPLE}\n Superuser privileges are required to run this script. ${NC}"
echo -e "${PURPLE}\n e.g. \"sudo $0\" ${NC}"
exit 1
fi
COMPILER_TARGET="/opt/hisi-linux/x86-arm/arm-hisiv300-linux/target/usr"
SDK_DIR="../Hi3518E_SDK_V1.0.4.0"
MTD_UTILS_FILE="mtd-utils-1.5.2.tar.bz2"
SQUASHFS_FILE="squashfs4.2.tar.bz2"
UTILS_FILE="util-linux-2.22-rc2.tar.bz2"
#patch for pc tool build
if [ -z "`dpkg -l |grep -i libacl1-dev`" ];then
sudo apt-get install libacl1-dev
fi
if [ -z "`dpkg -l |grep -i zlib1g-dev`" ];then
sudo apt install zlib1g-dev
fi
if [ -z "`dpkg -l |grep -i zlib1g-dev:i386`" ];then
sudo apt install zlib1g-dev:i386
fi
if [ -z "`dpkg -l |grep -i libuuid`" ];then
sudo apt-get install uuid-dev
fi
echo "patch of install done..."
sudo cp packages/${MTD_UTILS_FILE} ${SDK_DIR}/osdrv/tools/board/mtd-utils/
sudo cp packages/${MTD_UTILS_FILE} ${SDK_DIR}/osdrv/tools/pc/jffs2_tool/
sudo cp packages/${SQUASHFS_FILE} ${SDK_DIR}/osdrv/tools/pc/squashfs4.2/
sudo cp packages/${UTILS_FILE} ${SDK_DIR}/osdrv/tools/pc/cramfs_tool/
echo "patch of replace source file done..."
sed -i "s/mtd-utils-1.5.0/mtd-utils-1.5.2/g" ${SDK_DIR}/osdrv/tools/board/mtd-utils/Makefile
sed -i "s/mtd-utils-1.5.0/mtd-utils-1.5.2/g" ${SDK_DIR}/osdrv/tools/pc/jffs2_tool/Makefile
#Those two lines don't work well without [ nproc=$(nproc) ] when compile sdk, such as:
#"make OSDRV_CROSS=arm-hisiv300-linux CHIP=hi3518ev200 nproc=$(($(nproc)-1)) all"
#if your cpu isn't one core signle thread, it's better to use '+' instead '-' .
sed -i "s/-j 20 /-j\$(nproc) /g" `grep "\-j 20 " -rl ${SDK_DIR}`
sed -i "s/-j 16 /-j\$(nproc) /g" `grep "\-j 16 " -rl ${SDK_DIR}`
echo "patch of adapt makefile done..."
#patch for board
sudo cp -rf include/* ${COMPILER_TARGET}/include/
echo "patch of add include done..."
#notice: libs just for arm-hisiv300-linux, if you use another compiler,
# make sure libs are useful at first.
sudo cp -d lib/* ${COMPILER_TARGET}/lib/
echo "patch of add libs done..."
echo "patch for ${SDK_DIR} done... Enjoy it"
运行该补丁后再编译即可。补丁内容不再赘述。
附：完整补丁包 https://download.csdn.net/download/qq_36160497/11217057
step2.4 再编译
打完补丁后，运行 make OSDRV_CROSS=arm-hisiv300-linux CHIP=hi3518ev200 nproc=$(($(nproc)-1)) all，耐心等待几分钟后，提示编译成功
结尾：
经过一顿疯狂的操作后，SDK编译成功，HI3518E的开发环境算是搭建成功啦，后续可以开启海思的基本学习了，如有问题或错漏，欢迎大家留言指出，同时补丁脚本中也包含联系方式?
![Hi3518EV200平台直接操作GPIO输入或输出高低电平[图]](data:image/gif;base64,R0lGODlhAQABAIAAAP///wAAACwAAAAAAQABAAACAkQBADs=)