Chap1 SDK初探
step1.1 解壓<Hi3518E_SDK_V1.0.4.0.tgz>到自己的工作目錄
進入解壓後的目錄Hi3518E_SDK_V1.0.4.0可以看到4個檔案（linux下一切皆檔案?）
package scripts sdk.cleanup sdk.unpack
目錄說明：
package ：存放SDK各種壓縮包的目錄
scripts ：存放shell腳本的目錄
sdk.cleanup : SDK清理腳本,運作後整個目錄将恢複到解壓後的初始狀态，請注意自己的修改内容，謹慎運作
sdk.unpack : SDK展開腳本，用以快速展開基本的SDK包
step1.2 運作./sdk.unpack解壓SDK包
期間可能會有報錯：
./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
解決方法：修改系統預設shell為bash
sudo dpkg-reconfigure dash
選擇：否/no，重新運作腳本即可
運作後可以看到目前目錄下的檔案結構：
drv mpp osdrv package scripts sdk.cleanup sdk.unpack
新增目錄說明：
drv ：driver相關
mpp ：媒體處理軟體平台(Media Process Platform)相關
osdrv ：作業系統及相關驅動<uboot, kernerl, rootfs,tools...>
Chap2.SDK整體編譯
step2.1 編譯鍊的安裝與選擇
040SDK包中提供兩種編譯工具鍊 arm-hisiv300-linux 和 arm-hisiv400-linux在osdrv/opensource/toolchain目錄下，其中 arm-hisiv300-linux 為基于 uclibc 的工具鍊， arm-hisiv400-linux 為基于 glibc 的工具鍊。請注意uboot,kernel,rootfs,和我們的app要統一使用某一個交叉編譯鍊編譯，不要兩個編譯鍊混用，否則系統運作的時候可能出現奇奇怪怪的錯誤，安裝方法如下（注意，需要有sudo權限或者root權限)：
1）安裝v300編譯鍊：
進入arm-hisiv300-linux目錄，然後運作./cross.install即可。
2）安裝v400編譯鍊：
進入arm-hisiv400-linux目錄，運作chmod +x cross.install，然後運作./cross.install即可。
3）生效環境變量：
編輯 /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），然後souce /etc/environment即可
4）編譯鍊的選取：
由于單闆資源有限，而ulibc比glibc要小很多，是以後續正常情況下選擇arm-hisiv300-linux作為我的編譯鍊
step2.2 整體編譯
進入目錄<Hi3518E_SDK_V1.0.4.0/osdrv>，make OSDRV_CROSS=arm-hisiv300-linux CHIP=hi3518ev200 all,整體編譯。編譯期間可能會遇到若幹錯誤，關鍵字摘錄如下：
錯誤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
錯誤2：
mkfs.jffs2.c:70:10: fatal error: sys/acl.h: 沒有那個檔案或目錄
錯誤3：
compr_zlib.c:39:10: fatal error: zlib.h: 沒有那個檔案或目錄
錯誤4：
mkfs.ubifs/mkfs.ubifs.h:46:10: fatal error: uuid/uuid.h: 沒有那個檔案或目錄
錯誤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
錯誤6：其他
step2.3 錯誤分析及解決
産生這些錯誤的原因在于我們的環境搭建不完全，無論是pc還是交叉編譯鍊。處理方法有如下兩種。
Action1. 修改頂層Makefile：删除目标 all的依賴，hipctools hiboardtools，這樣一來不再編譯這些工具，可以自己安裝代替，同時也需要修改Makefile中使用這些工具的地方，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: 給SDK打更新檔。針對以上錯誤，我給SDK做了一份更新檔，更新檔腳本内容如下：
#!/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 ${SDK_DIR} done... Enjoy it"
運作該更新檔後再編譯即可。更新檔内容不再贅述。
附：完整更新檔包 https://download.csdn.net/download/qq_36160497/11217057
step2.4 再編譯
打完更新檔後，運作 make OSDRV_CROSS=arm-hisiv300-linux CHIP=hi3518ev200 nproc=$(($(nproc)-1)) all，耐心等待幾分鐘後，提示編譯成功
結尾：
經過一頓瘋狂的操作後，SDK編譯成功，HI3518E的開發環境算是搭建成功啦，後續可以開啟海思的基本學習了，如有問題或錯漏，歡迎大家留言指出，同時更新檔腳本中也包含聯系方式?
![Hi3518EV200平台直接操作GPIO輸入或輸出高低電平[圖]](data:image/gif;base64,R0lGODlhAQABAIAAAP///wAAACwAAAAAAQABAAACAkQBADs=)